2009年第40卷第11期共收錄50篇
1.Accession number:20095112566876
Title: Analysis of microstructure and model of butterfly scales
Authors: Qiu, Zhaomei1 ; Han, Zhiwu2
Author affiliation: 1 College of Vehicle and Motive Power Engineering, Henan University of Science and Technology, Luoyang 471003, China
2 Key Laboratory of Bionic Engineering, Jilin University, Changchun 130025, China
Corresponding author: Han, Z. (zwhan@jlu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume:40
Issue:11
Issue date: November 2009
Publication year: 2009
Pages: 193-196 207
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: There exist periodic order non-smooth structures like ridge and ditch in butterfly scales, small difference of which such as form, density, size, space, thickness, layer number, distribution style, can effect the different surface colors. The analysis on microstructure of butterfly scales is the theoretical foundation of stealth research on structural color of living creatures. From the macroscopical viewpoints and microcosmic ones of surface configuration and cross-section structure, the microstructure of scales were contrastively analyzed by electron microscope, the optimized model of distributing, configuration and structure of butterfly scales were built, and then two kinds of bionic models of butterfly scale's microstructure were optimized and designed.
Number of references: 11
Main heading: Microstructure
Controlled terms: Bionics - Color
Uncontrolled terms: Bionic model - Layer number - Living creatures - Non-smooth - Periodic orders - Scale models - Structural color - Surface colors - Surface configuration - Theoretical foundations
Classification code:951 Materials Science - 933 Solid State Physics - 801.4 Physical Chemistry - 741.1 Light/Optics - 731.1 Control Systems - 531.2 Metallography - 461.1 Biomedical Engineering
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
2. Accession number: 20095112566849
Title: Constant palstance control of combine cylinder based on RBF
Authors: Qin, Yun1 ; Zhao, Dean1 ; Li, Fazhong1 ; Ji, Wei1
Author affiliation: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Qin, Y. (Qinyun54321@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 59-63
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The walking office, harvests and threshing system of combine was analyzed, and the fundamental mathematical model of system was proposed. Since this model was high order, nonlinear system, without the accurate system parameter. The difference equation of model was decomposed into two parts. The first part had a bearing on the control signal, another part did not. By using the RBF neural network technology, the two parts was separately identified online. Then, the controller functionated according to the identified result. Under the dissimilar condition, simulation and experiment was carried out which proved that using the RBF network can fit the controlled plant effectively. When the controlled plant parameter changes, the system can track it, achieving the good control effect.
Number of references: 13
Main heading: Radial basis function networks
Controlled terms: Agriculture - Attitude control - Cylinders (shapes) - Difference equations - Identification (control systems) - Mathematical models - Neural networks - Nonlinear systems - Simulators
Uncontrolled terms: Control signal - High order - On-line identification - Plant parameters - RBF Network - RBF Neural Network
Classification code: 723.4 Artificial Intelligence - 731.1 Control Systems - 731.3 Specific Variables Control - 671 Naval Architecture - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 921.6 Numerical Methods - 961 Systems Science - 921 Mathematics - 662.1 Automobiles - 461.1 Biomedical Engineering - 621 Nuclear Reactors - 652.3 Aircraft Instruments and Equipment - 408.2 Structural Members and Shapes - 654.1 Rockets and Missiles - 656.1 Space Flight - 657.1 Solar Energy and Phenomena - 655.2 Satellites
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
3. Accession number: 20095112566864
Title: Effects of heat treatment on respiration intensity and endogenous hormone of lightly processed table grapes
Authors: Kou, Liping1 ; Liu, Xinghua1 ; Ding, Wu1 ; Bo, Xin2
Author affiliation: 1 College of Food Science and Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China
2 School of Basic Medical Sciences, Fourth Military Medical University, Xi'an 710032, China
Corresponding author: Liu, X. (liuxh2830@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 133-137
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: To explore the effect of pre-storage mild heat treatment on mechanism of senescence and softening and storage quality of minimally-processed grape, lightly-processed Red Globe grape were treated at either 45°C for 8min or 55°Cfor 5 min before stored. The respiration and endogenous hormone of the treated table grapes were investigated. Results indicated that heat treatment had significant effects on the respiration rate of grapes during storage as follows. Contents of IAA and GA3 were negatively correlated with decay rate of lightly processed grape, and the correlation coefficients were 0.9035 and 0.8416, respectively. The ABA content during the storage of the grapes changes in parabolic shape, developed from lower to higher and then to lower. Heat treatment can delay the appearance of peak and decline the peak value. ZR content was not significantly affected by heat treatment, and didn't present change rule during the lightly processed storage.
Number of references: 19
Main heading: Fruits
Controlled terms: Decay (organic) - Genetic algorithms - Heat treatment - Ion beams - Thermal effects
Uncontrolled terms: ABA - Correlation coefficient - Decay rate - Effects of heat treatment - Endogenous hormones - Peak values - Respiration rate - Storage quality - Table grapes
Classification code: 951 Materials Science - 932.1 High Energy Physics - 931.3 Atomic and Molecular Physics - 921 Mathematics - 821.4 Agricultural Products - 811.2 Wood and Wood Products - 802.2 Chemical Reactions - 801.2 Biochemistry - 723 Computer Software, Data Handling and Applications - 641 Heat and Mass Transfer; Thermodynamics - 537.1 Heat Treatment Processes - 531 Metallurgy and Metallography - 421 Strength of Building Materials; Mechanical Properties
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
4. Accession number: 20095112566863
Title: Temperature detection of cut flower during vacuum cooling with thermal infrared image
Authors: Song, Xiaoyong1 ; Li, Yunfei2 ; Deng, Yun2 ; Chen, Jiasheng2
Author affiliation: 1 School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2 School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
Corresponding author: Li, Y. (yfli@sjtu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 129-132 149
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Both thermal infrared imaging and thermocouples were applied to real time measurement of cut gerbera during vacuum cooling. Surface temperatures of the ligule-shape petal, tubular petal and stem were detected. Results show that there is a significant difference of different parts in average cooling rate, and for the petal and stem, the temperature distribution is nonuniform. The average final temperature obtained with thermal images is 4.55-10.4°C lower than the thermocouple.
Number of references: 19
Main heading: Thermography (imaging)
Controlled terms: Cooling - Imaging systems - Infrared devices - Thermal effects - Thermocouples - Thermometers - Time measurement - Vacuum - Vacuum applications
Uncontrolled terms: Cooling rates - Cut flowers - Nonuniform - Real time measurements - Surface temperatures - Temperature detection - Thermal images - Thermal infrared images - Thermal infrared imaging - Vacuum cooling
Classification code: 741.3 Optical Devices and Systems - 742.1 Photography - 746 Imaging Techniques - 802.3 Chemical Operations - 943.3 Special Purpose Instruments - 944.5 Temperature Measuring Instruments - 951 Materials Science - 741 Light, Optics and Optical Devices - 421 Strength of Building Materials; Mechanical Properties - 531 Metallurgy and Metallography - 633 Vacuum Technology - 633.1 Vacuum Applications - 641 Heat and Mass Transfer; Thermodynamics - 641.2 Heat Transfer - 723.2 Data Processing and Image Processing
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
5. Accession number: 20095112566874
Title: Identification of beef freshness with electronic nose
Authors: Shi, Zhibiao1 ; Tong, Yueying2 ; Chen, Donghui2 ; Li, Yang1
Author affiliation: 1 College of Energy Resources and Mechanical Engineering, Northeast Dianli University, Jilin 132012, China
2 College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
Corresponding author: Shi, Z. (shizhibiao@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 184-188
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: An electronic nose system was developed for detecting beef freshness. An array of gas sensor was selected correctly according to beef smell and sensor experiments. To enhance the sensitivity of electronic nose sensors, purchased sensors were improved. By using the research achievements of biological olfaction, a bionic nasal meatus was designed. In order to improve the recognition rate of the electronic nose system for small samples, appropriate recognition algorithm of support vector machine (SVM) was adopted. Identification experiments of different freshness of beef that had been stored for 7 days were carried out, and results showed that the recognition rate of this system is 99.25%, the feasibility of identifying beef freshness with electronic nose was confirmed.
Number of references: 11
Main heading: Sensors
Controlled terms: Artificial organs - Experiments - Meats - Optical filters - Sensory aids - Support vector machines
Uncontrolled terms: Electronic NOSE - Electronic nose systems - Gas sensors - Recognition algorithm - Recognition rates - Small samples
Classification code: 822.3 Food Products - 801 Chemistry - 741.3 Optical Devices and Systems - 732.2 Control Instrumentation - 901.3 Engineering Research - 723 Computer Software, Data Handling and Applications - 462.4 Prosthetics - 462.1 Biomedical Equipment, General - 461.5 Rehabilitation Engineering and Assistive Technology - 717.2 Optical Communication Equipment
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
6. Accession number: 20095112566860
Title: Effect of vacuum drying conditions on brown rice taste quality
Authors: Xu, Zemin1 ; Wu, Wenfu2 ; Yin, Liyan2
Author affiliation: 1 College of Biological Science and Technology, Changchun University, Changchun 130022, China
2 College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
Corresponding author: Wu, W. (wwfzlb@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 115-118
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: By taste analyzer, the physical and chemical data of brown rice was obtained. And then, employing the model of white rice, the correlation between the main compositions and taste value was gained by parameter estimation. Base on the paddy moisture falling to 15%, a mathematical model for taste value of the brown rice was built by using quadratic orthogonal rotation combination design to evaluate the rice taste quality and develop the vacuum drier. The research results showed that drying temperature, original moisture, and vacuum degree are the key factors affecting the taste value during paddy vacuum drying, according to priority. The taste value is negatively related to the two former and is positively related to the latter.
Number of references: 8
Main heading: Vacuum technology
Controlled terms: Dewatering - Mathematical models - Moisture - Parameter estimation - Vacuum
Uncontrolled terms: Brown rice - Chemical data - Combination design - Drying temperature - Effect factors - Key factors - Quadratic orthogonal rotation - Research results - Taste quality - Vacuum degree - Vacuum drying - White rice
Classification code: 443.1 Atmospheric Properties - 633 Vacuum Technology - 731.1 Control Systems - 801.4 Physical Chemistry - 802.3 Chemical Operations - 921 Mathematics
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
7.Accession number: 20095112566879
Title: Design and analysis of a 3-DOF spatial parallel robotic mechanism
Authors: Yuan, Daning1 ; Zhang, Yanbin2 ; Liu, Hongzhao1
Author affiliation: 1 Faculty of Mechanical Precision Instrumental Engineering, Xi'an University of Technology, Xi'an 710048, China
2 College of Architecture Engineering, Henan University of Science and Technology, Luoyang 471003, China
Corresponding author: Yuan, D. (daningyuan@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 208-211 218
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type:
Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A novel spatial parallel robotic mechanism with three degrees of freedom (DOF) was proposed, whose moving platform of the mechanism had two-translational and one-rotational DOF. Based on the screw theory, kinematics output property and mobility of the manipulator were analyzed, respectively, and analytical solutions of position and velocity for both direct and inverse kinematics were derived. Furthermore, the singularity and the dexterity were discussed. Since the Jacobian matrix, mapping the input velocity vector space into the output, is an identical matrix, the present mechanism is a free-singularity fully-isotropic one, which has good performances in motion and force transmission and potential applicable future.
Number of references: 10
Main heading: Machine design
Controlled terms: Flexible manipulators - Inverse kinematics - Robotics - Robots
Uncontrolled terms: Analytical solutions - Design and analysis - Force transmission - Fully-isotropic - Input velocity - Kinematics analysis - matrix - Moving platform - Output property - Parallel robotics - Screw theory - Three degrees of freedom
Classification code: 601 Mechanical Design - 691.1 Materials Handling Equipment - 731.5 Robotics - 731.6 Robot Applications - 931.1 Mechanics
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
8. Accession number: 20095112566868
Title: Experiment on productive of ethanol for extruded corn grist degermed with enzyme preparation at low temperature
Authors: Shen, Dechao1 ; Zhang, Chunye2
Author affiliation: 1 Light Industry and Agricultural Engineering College, Shandong University of Technology, Zibo 255049, China
2 Department for Supervising and Inspecting of Quality, Wahaha Group Co., Ltd., Hangzhou 310009, China
Corresponding author: Shen, D. (shendc@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 156-160
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The technology relating to extruded corn grist degermed with enzyme preparation at low temperature which was liquefied, saccharified, fermented, distilled directly for production of ethanol, was studied. The influence of main parameters of extrusion-saccharification-fermentation system for above extrudate on main evaluation indexes of ethanol mash was researched. These parameters include the added dosage of high temperature resistant α-amylase into corn grist degermed before extruding, the added dosage of glucoamylase in saccharifying of extrudate, saccharification time, the added dosage of high temperature resistant α-amylase in liquefaction, and the dosage of yeast in ferment. The main indexes include the ethanol degree, utilization ratio of starch and residual total sugar of ethanol mash. The results indicate that under the condition of optimum value for system parameters, the ethanol degree and utilization ratio of starch of ethanol mash after fermenting for 48 h are respectively 13.45% and 59.21%. These values are more than 13.08% and 57.85% of ethanol mash for contrast extruded corn without enzyme preparation. These values are also more than 12.89% and 56.6% of ethanol mash for corn grist degermed with traditional ethanol productive technology.
Number of references: 22
Main heading: Ethanol
Controlled terms: Enzymes - Extrusion - Low temperature production - Saccharification - Starch - Sugar (sucrose) - Sugars
Uncontrolled terms: Corn grist degermed - Enzyme preparation - Evaluation index - Extrudates - Fermentation systems - Glucoamylase - High-temperature resistant - Low temperatures - Main parameters - Optimum value - Utilization ratios
Classification code: 822.3 Food Products - 816.1 Processing of Plastics and Other Polymers - 815.1.1 Organic Polymers - 811.3 Cellulose, Lignin and Derivatives - 804.1 Organic Compounds - 802.2 Chemical Reactions - 801.2 Biochemistry - 644.4 Cryogenics - 535.2.2 Metal Forming Practice - 523 Liquid Fuels - 461.2 Biological Materials and Tissue Engineering
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
9. Accession number: 20095112566838
Title: Dynamic load characteristics of heavy vehicle based on multi-body dynamic model
Authors: Liu, Dawei1 ; Liu, Wei2 ; Chen, Huanming1 ; Li, Guozheng1 ; Jiang, Rongchao1
Author affiliation: 1 College of Mechanical and Electronic Engineering, Qingdao University, Qingdao 266071, China
2 College of Automotive Engineering, Jilin University, Changchun 130025, China
Corresponding author: Liu, D. (ldw@qdu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 7-12
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A detailed multi-body dynamic model of a heavy truck was established by using SIMPACK software, which included front suspension, rear balance suspension, steering system, tyre system etc. The harmony superposition method was used to simulate stochastic road with a specific spectrum, and an integrated environment with different road roughness was built to study the relationship between vehicle dynamic tyre loads with three directions and different road grading and vehicle speed. Simulation results indicated that, the front axle's vehicle longitudinal dynamic tyre load was less than the middle and the rear axles, and the front axle's vehicle side and normal dynamic tyre load was more than the middle and the rear axles. For the middle axle and the rear axle, the vehicle dynamic tyre load was roughly the same. At 60-90km/h driving, on grade A-D road, the front axle's vehicle normal dynamic tyre load coefficient was more than the middle and the rear axles, and the front axle's vehicle normal tyre force was less than the middle and the rear axles.
Number of references: 10
Main heading: Automobile bodies
Controlled terms: Automobile steering equipment - Automobile suspensions - Axles - Dynamic models - Loads (forces) - Roads and streets - Simulators - Stochastic models - Vehicles - Wheels
Uncontrolled terms: Front axle - Harmony superposition method - Heavy truck - Heavy vehicle - Integrated environment - Longitudinal dynamics - Multi-body dynamic - Rear axle - Road roughness - SIMPACK - Simulation result - Steering systems - Tyre forces - Tyre load - Vehicle dynamics - Vehicle speed
Classification code: 662.1 Automobiles - 662.4 Automobile and Smaller Vehicle Components - 663.2 Heavy Duty Motor Vehicle Components - 657.1 Solar Energy and Phenomena - 671 Naval Architecture - 921 Mathematics - 922.1 Probability Theory - 682.1.1 Railroad Cars - 655.2 Satellites - 408 Structural Design - 421 Strength of Building Materials; Mechanical Properties - 432 Highway Transportation - 406.2 Roads and Streets - 601.2 Machine Components - 632.1 Hydraulics - 654.1 Rockets and Missiles - 621 Nuclear Reactors
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
10. Accession number: 20095112566846
Title: High-speed photograph analysis on threshing process of corn seed
Authors: Li, Xinping1 ; Ma, Fuli1 ; Gao, Lianxing2
Author affiliation: 1 College of Vehicle and Momentum Engineering, Henan University of Science and Technology, Luoyang 471003, China
2 College of Agriculture Engineering, Shenyang Agricultural University, Shenyang 110161, China
Corresponding author: Li, X.
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date:
November 2009
Publication year: 2009
Pages: 46-49
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In order to optimize parameters of threshing system of seed corn thresher with different speeds threshing parts, and to decrease mechanical damage of corn seed kernel in the course of threshing, the process of feeding and threshing origination of single seed corn ear was analyzed by using high-speed photograph method. The testing results show that damage rate of kernels subjected intense impact is large in the feeding origination of seed corn ear; with threshing, impact changes more and more feeble, and damage rate of kernels becomes smaller and smaller too. Under state of ordinal threshing, large amounts of kernel is threshed and the moving track of threshed kernel follows the tangent direction of contacting dot of straight roller and ear, while under state of out-of-order threshing, the amount of kernel is small and the moving of threshed kernel presents disordering. Furthermore, large rotating speed of spiral roller results in the larger out-of-order threshing of ear, which influences the threshing quality and threshing efficiency of seed corn ear.
Number of references: 9
Main heading: Agriculture
Controlled terms: Feeding - Photography - Rollers (machine components) - Seed - Speed
Uncontrolled terms: Corn seeds - Damage rate - Different speed - High-speed - Mechanical damages - Out of order - Rotating speed - Testing results
Classification code: 931.1 Mechanics - 821.4 Agricultural Products - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 746 Imaging Techniques - 742.1 Photography - 691.2 Materials Handling Methods - 601.2 Machine Components
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
11. Accession number: 20095112566852
Title: Experiment and analysis on water distribution uniformity of machine of sprinkling irrigation and hose irrigation dual purpose
Authors: Fan, Yongshen1 ; Huang, Xiuqiao1 ; Wu, Feng1 ; Wang, Tangjin2 ; Duan, Fuyi1
Author affiliation: 1 Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453003, China
2 Jiaxing Agricultural Economy Bureau, Zhejiang Province, Jiaxing 314000, China
Corresponding author: Fan, Y. (ngsfanys@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 74-77 123
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A new type lightweight and small irrigation machine with dual purpose of sprinkling irrigation and hose irrigation dual purpose was introduced, whose height and sprinkling breadth was adjustable. The water distribution uniformity of machine was studied by theoretical analysis and experimental validation, primary factors of which were analyzed, and sprinkling intensity and uniformity coefficient were calculated when the machine collocated sprinkling irrigation and hose irrigation system. The result show that primary factors effecting water distribution uniformity of machine are water distribution uniformity and collocating space of sprinkler, stepped speed, soil and landform, as well as wind speed. In lab experiment, the sprinkling uniformity coefficient exceeded 95%, and hose irrigation uniformity coefficient reached 90%, which fully met irrigation demand.
Number of references: 12
Main heading: Sprinkler systems (irrigation)
Controlled terms: Experiments - Hose - Water analysis - Water distribution systems - Water supply
Uncontrolled terms: Experiment and analysis - Experimental validations - Irrigation systems - Irrigation uniformity - Primary factors - Sprinkling irrigation - Water distribution uniformity - Water distributions - Wind speed
Classification code: 445.2 Water Analysis - 446.1 Water Supply Systems - 619.1 Pipe, Piping and Pipelines - 801 Chemistry - 821.1 Agricultural Machinery and Equipment - 901.3 Engineering Research
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
12. Accession number: 20095112566855
Title: 3-D numerical simulation for low specific-speed centrifugal pump with multi-phase position
Authors: Wang, Yang1 ; Dai, Cui1
Author affiliation: 1 Technology and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Wang, Y. (pgwy@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date:
November 2009
Publication year: 2009
Pages: 89-93
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: To the doubt whether steady flow is endowed with global representativeness, the numerical simulation was performed for a low specific-speed centrifugal pump at multi-phase position, under the designed operating conditions, by multiple reference frame model. Changes of the total head were investigated in detail, due to the relative position of impeller passage to volute. The important flow information, such as velocity, the pressure fields and characteristics of swirling flow and its developing process on the eighth cross-sections of the volute casing, were also gained. It was concluded that the result of steady numerical simulation with multi-phase position truly reflects the unsteady flow features in the pump flow field to a certain degree.
Number of references: 11
Main heading: Mathematical models
Controlled terms: Centrifugal pumps - Flow simulation - Hydraulic machinery - Pumping plants - Pumps - Simulators - Speed - Three dimensional
Uncontrolled terms: 3-D numerical simulation - Developing process - Flow informations - Impeller passage - Multiple reference frame model - Multiple-reference frames - Numerical simulation - Operating condition - Pressure field - Pump flow - Relative positions - Volute casings
Classification code: 657.1 Solar Energy and Phenomena - 662.1 Automobiles - 671 Naval Architecture - 723.5 Computer Applications - 902.1 Engineering Graphics - 921 Mathematics - 931.1 Mechanics - 655.2 Satellites - 402.1 Industrial and Agricultural Buildings - 446 Waterworks - 618.2 Pumps - 621 Nuclear Reactors - 631.1 Fluid Flow, General - 632.2 Hydraulic Equipment and Machinery - 654.1 Rockets and Missiles
Database: Compendex
13. Accession number: 20095112566837
Title: Optimal yaw-moment control based on active braking
Authors: Pi, Dawei1 ; Chen, Nan1 ; Zhang, Bingjun2
Author affiliation: 1 School of Mechanical Engineering, Southeast University, Nanjing 211189, China
2 Automobile Engineering Research Institute, Nanjing AutomobileCorporation, Nanjing 210028, China
Corresponding author: Chen, N. (nchen@seu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date:
November 2009
Publication year: 2009
Pages: 1-6 12
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The cascade structure of control system consisting of yaw-moment controller and wheel slip controller was adopted to develop vehicle stability control (VSC). An ideal model with the best performance of side-slip angle and yaw-rate was established. The strategy of both the forward-feed control and back-feed control of tracking the desired model was employed. The linear quadratic regulator (LQR) theory was exploited for yaw-moment controller. Ideal slip assignment model was proposed to determine the ideal value for slip controller from the yaw moment acquired from the yaw-moment controller. The fuzzy logic control theory was applied to slip controller. An 8-DOF nonlinear vehicle model was constructed based on Matlab/Simulink platform, and then simulation was performed under low friction and high friction road condition respectively. The results show that the proposed control algorithm can achieve the desired yaw-moment, the side-slip angle and yaw-rate can track the ideal model effectively. It can achieve good transient and steady response, and improve vehicle handling stability.
Number of references: 11
Main heading: Controllers
Controlled terms: Algorithms - Cascade control systems - Control system stability - Control theory - Fuzzy control - Fuzzy logic - Simulators - System stability - Traction (friction) - Vehicles
Uncontrolled terms: Cascade control - Cascade structures - Control algorithms - Feed control - Fuzzy logic control - Ideal model - Ideal values - Linear quadratic regulator theories - Low friction - MATLAB /simulink - Moment control - Moment controller - Road condition - Sideslip angles - Slip control - Steady response - Vehicle handling - Vehicle model - Vehicle stability control - Wheel slips - Yaw moment
Classification code: 723 Computer Software, Data Handling and Applications - 723.4 Artificial Intelligence - 731 Automatic Control Principles and Applications - 731.1 Control Systems - 731.4 System Stability - 732.1 Control Equipment - 921 Mathematics - 931.1 Mechanics - 961 Systems Science - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 432 Highway Transportation - 621 Nuclear Reactors - 654.1 Rockets and Missiles - 655.2 Satellites - 657.1 Solar Energy and Phenomena - 662.1 Automobiles - 671 Naval Architecture - 682.1.1 Railroad Cars - 682.1.2 Locomotives
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
14. Accession number: 20095112566840
Title: Improved fuzzy control of high speed tracked vehicle hydrostatic transmission
Authors: Chen, Baorui1 ; Ma, Biao1 ; Li, Heyan1 ; Yang, Lei1
Author affiliation: 1 School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China
Corresponding author: Chen, B. (chenbaorui@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 18-21
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: It is difficult to formulate exact mathematical model of hydrostatic transmission due to nonlinear and time-varying characteristic, thus fuzzy control was performed to the system. To improve the traditional fuzzy controllers, a novel fuzzy control scheme was studied. By generating a new compensation amount with the product of original one and its absolute value, a fuzzy controller with variable scale factor was formed. The simulation and test results showed that the new controller can achieve high speediness response, restrain the overshoot effectively and obviously improve the dynamic and static characteristics of the system. It is suitable for the high speed tracked vehicle hydrostatic transmission.
Number of references: 7
Main heading: Fuzzy control
Controlled terms: Controllers - Dynamic response - Hydraulics - Hydrodynamics - Hydrostatic pressure - Mathematical models - Simulators - Vehicle transmissions - Vehicles
Uncontrolled terms: Absolute values - Fuzzy control scheme - Fuzzy controllers - Hydrostatic transmission - Scale Factor - Static characteristic - Test results - Time varying - Tracked vehicle - Tracked vehicles
Classification code: 655.2 Satellites - 657.1 Solar Energy and Phenomena - 662.1 Automobiles - 921 Mathematics - 671 Naval Architecture - 731 Automatic Control Principles and Applications - 732.1 Control Equipment - 723.4 Artificial Intelligence - 654.1 Rockets and Missiles - 632.1 Hydraulics - 408.1 Structural Design, General - 432 Highway Transportation - 602.2 Mechanical Transmissions - 621 Nuclear Reactors - 631.1.1 Liquid Dynamics - 631.2 Hydrodynamics
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
15. Accession number: 20095112566847
Title: Development and performance experiments on axial-rethreshing with axial feeding
Authors: Li, Yaoming1 ; Qiao, Mingguang1 ; Xu, Lizhang1 ; Jia, Biqing1 ; Zhao, Zhan1
Author affiliation: 1 Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Li, Y. (ymli@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 50-54
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In order to analyze the working performance of the rethreshing separation unit combined with a tangential-threshing and an axial threshing, including losing rate, distribution of the mixture along the axial of cylinder, the rate of impurity and power consumption, three threshing drums, i.e., the spike tooth, the rectangular tooth or the spike-short-rasp-bar tooth, were developed and test on the rig of the axial-threshing separation performance with axial feeding. The results show that three drums have low losing rate. Compared with the spike tooth and the rectangular tooth, the drum with spike tooth and short-rasp-bar tooth has uniformal distribution of the mixture along the axial of cylinder, less impurity contents and lower power consumption while threshing wheat.
Number of references: 10
Main heading: Dentistry
Controlled terms: Agriculture - Cylinders (shapes) - Electric power utilization - Experiments - Feeding - Separation
Uncontrolled terms: Axial feeding - Impurity content - Lower-power consumption - Performance experiment - Power Consumption - Separation performance - Separation units
Classification code: 901.3 Engineering Research - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 802.3 Chemical Operations - 706.1 Electric Power Systems - 691.2 Materials Handling Methods - 462.3 Dental Equipment and Supplies - 461.6 Medicine and Pharmacology - 461.1 Biomedical Engineering - 408.2 Structural Members and Shapes
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
16. Accession number: 20095112566882
Title: NC machine settings transformation for tilt method
Authors: Su, Jinzhan1 ; Fang, Zongde1 ; Cao, Xuemei2
Author affiliation: 1 School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
2 Electromechanical Engineering College, Henan University of Science and Technology, Luoyang 471003, China
Corresponding author: Su, J. (sujinzhan@mail.nwpu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date:
November 2009
Publication year: 2009
Pages: 223-226
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Transformation principle and method for machine settings from cradle-type hypoid generator to Free-From CNC one was studied. Appling coordinate transformation, the mathematical model of tilt method process for hypoid gears was proposed, which can be used for simulation face milling and face hobbing process. By auxiliary coordinate systems, the relative position and motion between the head-cutter and the workpiece during the two generation process was established, and transformed to Free-Form coordinate system, to obtain and to expand the expression of 6 CNC axes. A numerical example was also employed to verify the proposed method, and the TCA results proved that transformation is feasible.
Number of references: 8
Main heading: Mathematical transformations
Controlled terms: Coordinate measuring machines - Gear teeth - Mathematical models - Milling (machining) - Simulators
Uncontrolled terms: Co-ordinate system - Co-ordinate transformation - Face hobbing process - Face milling - Generation process - Hypoid gears - Machine settings - Numerical example - Relative positions - Work pieces
Classification code: 943.3 Special Purpose Instruments - 921.3 Mathematical Transformations - 921 Mathematics - 671 Naval Architecture - 662.1 Automobiles - 657.1 Solar Energy and Phenomena - 655.2 Satellites - 654.1 Rockets and Missiles - 621 Nuclear Reactors - 604.2 Machining Operations - 601.2 Machine Components
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
17. Accession number: 20095112566861
Title: Pore network numerical simulation and experiment on drying of corn material in
Bin
Authors: Yuan, Yuejin1 ; Xu, Yingying1 ; Liu, Xiangdong2
Author affiliation: 1 College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
2 College of Engineering, China Agricultural University, Beijing 100083, China
Corresponding author: Yuan, Y.
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 119-123
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In order to validate the model of reference, a corn drying experimental study was conducted, and numerical simulation was carried out under the same environmental condition. The experiment and simulation results indicated that the pore network model could explain the drying process of corn material well. There was a significant difference between the temperature of corn and of pore air, hence it was unreasonable to confuse the two kinds of temperature. The pore coordination number had a great effect on the drying process. The greater the pore coordination number was, the faster the material was dried. When the pore coordination number was small, a wet cluster phenomenon appeared in the drying bin.
Number of references: 11
Main heading:Curing
Controlled terms: Bins - Dewatering - Experiments - Simulators
Uncontrolled terms: Coordination number - Drying process - Environmental conditions - Experimental studies - Numerical simulation - Pore networks - Pore-air - Pore-network models - Simulation result
Classification code: 818.3 Rubber and Elastomer Processing - 815.1 Polymeric Materials - 802.3 Chemical Operations - 802.2 Chemical Reactions - 694.4 Storage - 901.3 Engineering Research - 671 Naval Architecture - 657.1 Solar Energy and Phenomena - 655.2 Satellites - 654.1 Rockets and Missiles - 621 Nuclear Reactors - 662.1 Automobiles
Database: Compendex
18. Accession number: 20095112566867
Title: Production of lactic acid by pellets of rhizopus oryzae in semi-continuous fermentation
Authors: Jiang, Shaotong1 ; Wu, Xuefeng1 ; Pan, Lijun1 ; Lai, Qingda1 ; Wu, Zhiye1
Author affiliation: 1 School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, China
Corresponding author: Jiang, S. (jiangshaotong@yahoo.com.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 150-155
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: By using single-factor test and orthogonal test, the optimized seed medium andfeeding medium were obtained, with the aim to study the stability of the production of lactic acid by Rhizopus oryzae though semi-continuous fermentation. The optimization culture medium was as follows: glucose 120g/L, (NH4)2SO4 2g/L, NaH2PO4 0.16g/L, KH2PO4 0.14g/L, MgSO4·7H2O 0.2g/L, ZnSO4·7H2O 0.22g/L, CaCO3 60g/L; the feeding medium was as follows: glucose 100g/L, (NH4)2SO4 2g/L, KH2PO4 0.1g/L, ZnSO4·7H2O 0.33g/L, MgSO4·7H2O 0.15g/L, CaCO3 50g/L. In flask culture 30 repeated stable fermentation were carried out, and 20 batches were carried out in a 5L stirred tank fermentor. The highest lactic acid yield from glucose was up to 86%.
Number of references: 15
Main heading: Body fluids
Controlled terms: Feeding - Fermentation - Glucose - Lactic acid - Organic acids - Pelletizing
Uncontrolled terms: Culture medium - Fermentors - Flask culture - L-Lactic acid - Orthogonal test - Rhizopus oryzae - Semi-continuous fermentation - Stirred Tank
Classification code: 805.1.1 Biochemical Engineering - 804.1 Organic Compounds - 802.3 Chemical Operations - 802.2 Chemical Reactions - 822.3 Food Products - 801.2 Biochemistry - 533.1 Ore Treatment - 461.8 Biotechnology - 461.2 Biological Materials and Tissue Engineering - 691.2 Materials Handling Methods
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
19. Accession number: 20095112566841
Title: Experiment on semi-active control of parallel damping equipment using vehicle instrument based on MRFD
Authors: Zhu, Wei1 ; Shen, Huiping1 ; Hu, Aiping1 ; Ma, Lüzhong2
Author affiliation: 1 College of Mechanical and Energy Engineering, Jiangsu Polytechnic University, Changzhou 213016, China
2 School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Zhu, W. (zhuwei_76@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 22-25
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: 3DOF vibration reduction platform using 3PRRP(4r) parallel mechanism and the elastic damping devices were established. A semi-active controller was designed with LQR law to control the system. Then, an experiment system was constructed to test the vibration of on control and off control. The result showed that it has good effectiveness for multi-dimension vibration control of instrument carried in vehicle.
Number of references: 7
Main heading: Vehicles
Controlled terms: Control system analysis - Damping - Mechanisms
Uncontrolled terms: Damping device - Experiment system - In-vehicle - Parallel mechanism - Parallel mechanisms - Semi-active controllers - Semiactive control - Vibration reductions
Classification code: 432 Highway Transportation - 601.3 Mechanisms - 731.1 Control Systems - 931.1 Mechanics
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
20. Accession number: 20095212568123
Title: Experiment of auto panel surface fracture and simulation base on universal formability technology
Authors: Wang, Jinwu1 ; Hu, Ping2 ; Fu, Zhengchun1 ; Xu, Yanwu3
Author affiliation: 1 College of Automotive Engineering, Jilin University, Changchun 130025, China
2 State Key Lab of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China
3 Ford Motor Company, Michigan 48121, United States
Corresponding author: Hu, P. (huping@dlut.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 227-231
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In order to emerge the surface fracture of auto body panel, four kinds of experimental dies containing class A surface feature of auto body outer panel was designed. The fracture phenomenon was observed during the stamping experiment. At the same time, numerical simulation based on an independently developed commercial CAE software KMAS/UFT of sheet metal forming was carried out. Comparison between experimental and simulated results based on LS-DYNA3D was made which showed good consistence. And then a universal formability theory called UFT was introduced to optimize the adjustment amount of metal flow and the stamping dies for fracture. Some suggestions were given by investigating the adjustment amount and modification of the stamping die.
Number of references: 8
Main heading: Fracture
Controlled terms: Automobile bodies - Automobile manufacture - Computer simulation - Computer software - Dies - Experiments - Finite element method - Metal forming - Sheet metal - Stamping
Uncontrolled terms: Class-A surface - Fracture defect experiment - Fracture defects - Simulation - Universal formability technology
Classification code: 951 Materials Science - 921.6 Numerical Methods - 901.3 Engineering Research - 723.5 Computer Applications - 723 Computer Software, Data Handling and Applications - 663.2 Heavy Duty Motor Vehicle Components - 662.4 Automobile and Smaller Vehicle Components - 662.1 Automobiles - 603.2 Machine Tool Accessories - 535.2 Metal Forming - 535.1 Metal Rolling - 534.1 Foundries - 421 Strength of Building Materials; Mechanical Properties
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
21. Accession number: 20095112566858
Title: Research in high temperature performance and fire temperature field of straw fiber composite material
Authors: Wang, Hairong1 ; Chen, Zhenzhong1 ; Liang, Xudong1 ; Li, Tao1 ; Liang, Dong1
Author affiliation: 1 School of Engineering, Sun Yat-sen University, Guangzhou 510275, China
Corresponding author: Liang, D. (liangdong@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 103-108
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Straw fiber wall structure is a new structural system with properties of lightweight and energy-saving, heat preservation and sound isolation. Firstly, the impact of chemical component, structure on basic thermal performance such as activation energy, heat productivity, heat release rate was studied in details. Secondly, the chemicophysics reaction in high temperature were studied through TGFTIR experiment. Finally, the linear stepwise regression model about fire temperature and loss on ignition was established based on loss on ignition experiment and DRS2. 6 software analysis system. Furthermore, a 200mm thickness straw fiber external thermal insulation plate was chosen and burned in independent designed ISO9705 standard fire test room in order to verify the accuracy of the regression model. The results show that the model is correct and can be applied to the real engineering computation and assessment.
Number of references: 9
Main heading: Thermal insulation
Controlled terms: Activation energy - Composite materials - Composite micromechanics - Energy conservation - Experiments - Fibers - Fireproofing - Fires - Firing (of materials) - Flammability testing - Mixed convection - Regression analysis - Structural members
Uncontrolled terms: Chemical component - Energy saving - Fiber composite - Fiber wall - Fire models - Fire temperatures - Heat preservation - Heat release rates - High temperature - High temperature performance - Loss on ignition - Material temperature - Real engineering - Regression model - Software analysis - Sound isolation - Standard fire - Stepwise regression - Structural systems - TG-FT-IR - Thermal Performance
Classification code: 817 Plastics and Other Polymers: Products and Applications - 817.1 Polymer Products - 819.4 Fiber Products - 901.3 Engineering Research - 812.2 Refractories - 914.2 Fires and Fire Protection - 931.1 Mechanics - 931.3 Atomic and Molecular Physics - 951 Materials Science - 922.2 Mathematical Statistics - 812.1 Ceramics - 413.2 Heat Insulating Materials - 414.1 Brickmaking - 415 Metals, Plastics, Wood and Other Structural Materials - 521.4 Flame Research - 408.2 Structural Members and Shapes - 525.2 Energy Conservation - 801.4 Physical Chemistry - 811 Cellulose, Paper and Wood Products - 812 Ceramics, Refractories and Glass - 641.2 Heat Transfer
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
22. Accession number: 20095112566870
Title: Navigation study for intelligent vehicle based on layered sensor information fusion
Authors: Wang, Minglei1 ; Chen, Wuwei1 ; Wang, Tanbin1 ; Wang, Jiaen1 ; Li, Jin1
Author affiliation: 1 School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei 230009, China
Corresponding author: Chen, W. (cww@mail.hf.ah.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 165-170
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: To solve the uncertainty of sensor information for intelligent vehicle navigation, a 2-level sensor information fusion method based on both BP neural network and fuzzy neural network was presented. A BP neural network was used to fuse information from multi-ultrasonic sensors so that the uncertainty of the sensors' information can be decreased and high accuracy of obstacle distance can be obtained. In order to realize preferable decision control of navigation, a fuzzy neural network controller was employed for tracking obstacle avoidance to fuse the obstacle distance and the error information between the vehicle and the marked line. High performance of robustness and flexibility for intelligent vehicle navigation can be achieved with the 2-level information fusion method. Simulation and experiment results verified the effectiveness of the proposed approach.
Number of references: 8
Main heading: Sensor networks
Controlled terms: Fuzzy neural networks - Information fusion - Intelligent vehicle highway systems - Navigation - Navigation systems - Sensors - Vehicles
Uncontrolled terms: BP neural networks - Decision control - Error information - Fuzzy neural network controller - Information fusion method - Intelligent vehicles - Level sensors - Navigation control - Navigation controls - Obstacle avoidance - Obstacle distance - Sensor fusion - Sensor informations
Classification code: 903.1 Information Sources and Analysis - 801 Chemistry - 732.2 Control Instrumentation - 732 Control Devices - 731.1 Control Systems - 723.5 Computer Applications - 723.4 Artificial Intelligence - 716.3 Radio Systems and Equipment - 655.1 Spacecraft, General - 434.4 Waterway Navigation - 432 Highway Transportation - 431.5 Air Navigation and Traffic Control - 406.1 Highway Systems
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
23. Accession number: 20095112566885
Title: Wear mechanism of cemented carbide tool in high speed machining iron-based superalloy GH2132
Authors: Liu, Chao1 ; Ai, Xing1 ; Liu, Zhanqiang1 ; Wan, Yi1
Author affiliation: 1 Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Shandong University, Ji'nan 250061, China
Corresponding author: Liu, C.
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume:40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 240-244
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Four kinds of cemented carbide tools were used to turn Iron-based superalloy GH2132 at high-speed under dry cutting condition. Wear morphology of cutting tool was observed by SEM, and element distribution of tool surface was analyzed by EDS. Adhesive wear, oxidation wear and diffusion with micro-chipping were the main wear mechanisms of the cemented carbide tool . The rake face wear of the cutting tools in high speed machining was different from that in conventional speed machining. Namely, the rake face was not characterized by crater wear but by slope-plane-wear with the maximum wear at the cutting edge. Furthermore, the worn area of the rake face decreased with cutting speed and the wear depth increased correspondingly.
Number of references: 14
Main heading: Cutting tools
Controlled terms: Carbide cutting tools - Carbides - Metal working tools - Speed - Superalloys - Tribology - Turning - Wear of materials
Uncontrolled terms: Adhesive wears - Cemented carbides - Crater wear - Cutting edges - Cutting speed - Dry cutting - Element distribution - High speed machining - High speed turning - High-speed - Iron-based - Oxidation wear - Rake face - SEM - Tool surfaces - Tool wear - Wear depth - Wear mechanisms - Wear morphology
Classification code: 951 Materials Science - 605.1 Small Tools, Powered - 804.2 Inorganic Compounds - 812.1 Ceramics - 931 Classical Physics; Quantum Theory; Relativity - 931.1 Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids - 605 Small Tools and Hardware - 604.1 Metal Cutting - 603.2 Machine Tool Accessories - 603.1 Machine Tools, General - 531 Metallurgy and Metallography - 421 Strength of Building Materials; Mechanical Properties - 604.2 Machining Operations
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
24. Accession number: 20095112566872
Title: Mangosteen grading based on computer vision
Authors: Zhang, Junxiong1 ; Xun, Yi2 ; Li, Wei1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Institute of Mechanical and Electrical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
Corresponding author: Zhang, J.
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 176-179 188
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A grading method of mangosteen at size and color was proposed based on computer vision. Taking the blue rollers as background, the mangosteen images were pre-segmented by double thresholds in RGB color space. Through morphological operation, contour trace and region fill, the whole mangosteen target was obtained. Lastly, the peduncle, pedicel and pericarp were identified by 2GRB and G factors. According to the centroid of peduncle and pedicel and the centroid of pericarp, the fruit posture was evaluated, and the diameter was extracted as the size grading criteria. Meanwhile, the difference of saturation and hue of pericarp area in HIS color space was the color grading criteria. A grading experiment was carried out for 200 mangosteens. The results indicated that the accuracy of diameter measurement is ±1.8mm, and the maximal scale of neighbor grade mixed by color is 10.2%.
Number of references: 10
Main heading: Color
Controlled terms: Computer vision - Grading - Image enhancement - Mathematical morphology
Uncontrolled terms: Color grading - Color space - Diameter Measurement - Double threshold - G factors - Grading criteria - Morphological operations - RGB color space
Classification code: 921 Mathematics - 913.3 Quality Assurance and Control - 741.2 Vision - 741.1 Light/Optics - 741 Light, Optics and Optical Devices - 731.6 Robot Applications - 723.5 Computer Applications - 723.2 Data Processing and Image Processing - 716.1 Information Theory and Signal Processing
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
25. Accession number: 20095112566839
Title: Rapid development simulation and test of robust control system for four-wheel steering vehicle
Authors: Yin, Guodong1 ; Chen, Nan1
Author affiliation: 1 School of Mechanical Engineering, Southeast University, Nanjing 210096, China
Corresponding author: Yin, G. (ygd@seu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 13-17 35
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Considering the high uncertainty for vehicle working environment, multi-degree of freedom four-wheel steering vehicle model was proposed. Structural singular value μ theory is adapted to design robust controller. By specifying an imaginary uncertainty module, the behavior robust property was inverted into a generalized system to resist the exterior disturbance. A HILS platform based on Matlab/Simulink/dSPACE was developed to real-time carry out the virtual testing by constructing different vehicle surrounding. The four-wheel steering automobile was modified successfully and the developed 4WS controller was then applied in the vehicle field test for validation and further modification. The test data proved that the modified four-wheel steering is prior to front-wheel steering and the former has an excellent maneuverability and stability. Furthermore, the whole procedure of rapid development for 4WS including off-line simulation, real-time simulation, hardware-in-the loop simulation and the validation of the vehicle field test, based on the control development system, was investigated by the 4WS rapid development system. Therefore it was demonstrated by theoretical and experimental results that the 4WS rapid development system is an extended powerful tool for the development of vehicle chassis electronic controllers.
Number of references: 8
Main heading: Steering
Controlled terms: Automobile steering equipment - Controllers - Docking - Maneuverability - Railroad cars - Robust control - Simulators - Traction (friction) - Wheels
Uncontrolled terms: Degree of freedom - Development systems - Field test - Four-wheel-steering - Front-wheel steering - Generalized systems - Hardware in-the-loop simulation - Off-line simulations - Rapid development - Rapid development system - Real time simulations - Robust controllers - Singular values - Test data - Vehicle chassis - Vehicle model - Virtual testing - Working environment
Classification code: 671 Naval Architecture - 671.1 Ship Design - 671.2 Ship Equipment - 672 Naval Vessels - 931.1 Mechanics - 674.1 Small Marine Craft - 682.1.2 Locomotives - 731 Automatic Control Principles and Applications - 732.1 Control Equipment - 682.1.1 Railroad Cars - 663.2 Heavy Duty Motor Vehicle Components - 662.4 Automobile and Smaller Vehicle Components - 601.2 Machine Components - 621 Nuclear Reactors - 652.1 Aircraft, General - 654.1 Rockets and Missiles - 655.1 Spacecraft, General - 655.2 Satellites - 657.1 Solar Energy and Phenomena - 662.1 Automobiles
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
26. Accession number: 20095112566848
Title: Design and experiment of threshing and separating unit with double axial cylinder
Authors: Xu, Lizhang1 ; Li, Yaoming1 ; Ma, Chaoxing1 ; Li, Hongchang1
Author affiliation: 1 Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Xu, L. (justxlz@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 55-58
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The total structure of a new transverse axial flow threshing and separating unit with double cylinder was described in detail, along with the design scheme of the threshing cylinder and concave. The frontal threshing device was made with the structure of short-rasp-bar, plate teeth, the small distance grid concave, and the posterior threshing device was composed with the structure of the spike tooth cylinder with helical blades and the large distance grid concave. The bench test showed that this device was applied for the large capacity and the difficult threshing rice. It also has the following advantages as higher threshing, lower cleaning loss, the well-proportioned distribution of threshed stuff, and the little trash content, and so on. The field experiment showed that the total loss rate is 1.94%, the threshing loss rate is 0.89%, the broken rate is 0.84%, and the ration of trash content is 0.20% when the feed rate is 4.32kg/s. Various technical indexes have reached to the national standard.
Number of references: 12
Main heading: Combines
Controlled terms: Agriculture - Axial flow - Cylinders (shapes) - Dentistry - Experiments
Uncontrolled terms: Bench tests - Design scheme - Double cylinder - Feed-rates - Field experiment - Helical blades - Loss rates - National standard - Threshing and separating unit - Total loss
Classification code: 821.1 Agricultural Machinery and Equipment - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 631.1 Fluid Flow, General - 901.3 Engineering Research - 462.3 Dental Equipment and Supplies - 461.1 Biomedical Engineering - 408.2 Structural Members and Shapes - 461.6 Medicine and Pharmacology
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
27. Accession number:20095112566843
Title: Interval analysis method for safety distance of car-following
Authors: Yu, Zhaopeng1 ; Wang, Ying1 ; Gao, Feng1
Author affiliation: 1 School of Transportation Science and Engineering, Beihang University, Beijing 100191, China
Corresponding author: Yu, Z. (yuzhaop@sohu.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 31-35
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: In the car-following process, there are some uncertain parameters in the vehicle brake system and the driver, such as the brake acceleration, the action time of the vehicle arrester and the response time of the driver, etc. Generally, the ranges of these uncertain parameters are easy to be found, but the effect of them on the car-following process is one of the hard issues. This paper used the interval number to describe the uncertain parameters in the car-following process. Based on the approximate computational method of the safety distance, the interval analysis was employed to calculate the safety distance of vehicles under two typical conditions. The results show that the safety distance calculated by the interval analysis method is not a certain value, but an interval value. Therefore, the interval analysis method can forecast the effects of the uncertain parameters on the safety distance in the car-following process.
Number of references: 12
Main heading: Safety engineering
Controlled terms: Brakes - Highway engineering - Uncertainty analysis
Uncontrolled terms: Brake acceleration - Car-following - Car-following process - Interval analysis - Interval analysis method - Interval number - Interval value - Response time - Safety distances - Traffic Engineering - Uncertain parameters - Vehicle brakes
Classification code: 406 Highway Engineering - 602 Mechanical Drives and Transmissions - 914 Safety Engineering - 922.1 Probability Theory
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
28. Accession number: 20095112566842
Title: Driving cycle construction methodology of city road based on markov process
Authors: Jiang, Ping1 ; Shi, Qin1 ; Chen, Wuwei1
Author affiliation: 1 School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei 230009, China
Corresponding author: Jiang, P. (jaczhaotao@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 26-30
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The vehicle driving cycle was taken as a stochastic Markov process with time, which was divided into 6 different states by maximum likelihood estimation (MLE). And every driving segment, as the modal event reflecting acceleration variations, finely preserved the speed variation characteristic in tiny time segments of the vehicle driving process. Therefore, the selection approach of candidate cycles was put forward by combination of the states transition probabilities with similarity tests, and the new evaluation criteria with 13 characteristic parameters was established. The actual application analysis was carried out with an example of typical roads driving cycles in Hefei and the independent test was performed to validate the rationality of the Markov method for the driving cycle. The results showed that the similarity levels of the Markov method, on the KS test of modal events acceleration distribution with experimental data, were 0.998, 0.989, 0.994, contrasting the traditional method, 0.788, 0.036, 0.992. Resultingly, the Markov method more accords with driving cycles of real roads.
Number of references: 9
Main heading: Maximum likelihood estimation
Controlled terms: Estimation - Markov processes - Roads and streets - Security of data
Uncontrolled terms: Acceleration variations - Application analysis - Characteristic parameter - Construction methodology - Driving cycle - Driving cycles - Evaluation criteria - Experimental data - K-S test - Speed variations - Time segments - Transition probabilities - Vehicle driving cycle
Classification code: 406.2 Roads and Streets - 723.2 Data Processing and Image Processing - 921 Mathematics - 922 Statistical Methods - 922.1 Probability Theory
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
29. Accession number: 20095112566869
Title: Fractionation of soybean proteins based on technique of Ca2 induced-precipitation
Authors: Guo, Qingqi1 ; Zhang, Na1 ; Zhao, Xinhuai1
Author affiliation: 1 Key Lab of Dairy Science, Northeast Agricultural University, Harbin 150030, China
Corresponding author: Zhao, X. (zhaoxh@mail.neau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 161-164 175
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Two major components of soybean proteins, β-conglycinin (7S) and glycinin (11S), were fractioned by a two-step technique based on the addition of different levels of Ca2 and NaHSO3 at refrigeration temperature and pH value adjust to induce protein precipitation. The suitable preparation conditions were studied herewith. Fractioned soybean protein I containing glycinin about 57.4% and fractioned soybean protein IIcontaining β-conglycinin 61.4% were prepared with the optimal conditions. The evaluation results show that fractioned soybean protein I has a better gelation property and foam powder than soybean protein isolate, while fractioned soybean protein II has a better emulsion property than soybean protein isolate. It can be found that fractionation of soybean proteins basing on Ca2 induced-precipitation may be applied in food industry to exploit functional property of soybean protein components more effectively.
Number of references: 9
Main heading: Proteins
Controlled terms: Calcium - Calcium chloride - Coagulation - Emulsification - Gelation - Polyacrylonitriles
Uncontrolled terms: Conglycinin - Emulsion properties - Evaluation results - Food industries - Functional properties - Functional property - Gelation properties - Glycinin - Optimal conditions - pH value - Preparation conditions - Protein precipitation - Refrigeration temperatures - Soybean proteins - Two-step technique
Classification code: 549.2 Alkaline Earth Metals - 802.3 Chemical Operations - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 815.1.1 Organic Polymers
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
30. Accession number: 20095112566851
Title: Numerical simulation for root zone soil moisture movement of apple orchard under rainfall-irrigation-evaporation
Authors: Guo, Xianghong1 ; Sun, Xihuan1 ; Ma, Juanjuan1
Author affiliation: 1 College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Corresponding author: Sun, X. (sunxihuan@tyut.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 68-73
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Under rainfall-irrigation-evaporation, 2-D soil moisture movement mathematical model including root water uptake function was established, and solved by finite element method based on soil hydrodynamics theory and root zone soil moisture movement characteristic. The model was verified by the data of the measured soil moisture content in filed. The computational results were in accordance with the measured, which indicated that the mathematic model of soil water movement is correct, and that solving of the model with finite element method is feasible. The model can be used to simulate the soil moisture distribution rule.
Number of references: 15
Main heading: Finite element method
Controlled terms: Evaporation - Fluid dynamics - Functions - Geologic models - Groundwater - Irrigation - Mathematical models - Moisture determination - Orchards - Permittivity - Simulators - Soil moisture - Underwater soils - Vapors
Uncontrolled terms: Apple orchard - Apple orchards - Computational results - Mathematic model - Numerical simulation - Root zone - Root-water uptake - Soil moisture content - Soil moisture distribution - Soil water movement
Classification code: 701 Electricity and Magnetism - 708.1 Dielectric Materials - 802.3 Chemical Operations - 804 Chemical Products Generally - 671 Naval Architecture - 821.3 Agricultural Methods - 921.6 Numerical Methods - 931.1 Mechanics - 944.2 Moisture Measurements - 921 Mathematics - 662.1 Automobiles - 471.1 Oceanography, General - 481.1 Geology - 483.1 Soils and Soil Mechanics - 621 Nuclear Reactors - 444.2 Groundwater - 631.1 Fluid Flow, General - 654.1 Rockets and Missiles - 655.2 Satellites - 657.1 Solar Energy and Phenomena - 641.1 Thermodynamics
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
31. Accession number: 20095112566845
Title: Design of automatic control system on baling apparatus for ensilage maize combine
Authors: Cong, Hongbin1 ; Li, Ruxin1 ; Han, Xinyue2 ; Li, Mingli1 ; Fan, Xiuwen1 ; Zhao, He1
Author affiliation: 1 College of Mechanical and Electrical Engineering, Shandong Agricultural University, Tai'an 271018, China
2 Sany Group STE Transmission Equipment Co. Ltd., Suzhou 215000, China
Corresponding author: Cong, H.
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date:
November 2009
Publication year: 2009
Pages: 42-45 54
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Ensilage maize combine can ingather corn ear, as well as bundle and ensilage corn stalk when it is used for corn harvest. In order to enhance operation efficiency of ensilage harvester, and to reduce the operating burden of driver, an automatic control system on feedstock and rope-send was designed, composed of three parts, i. e. , sensor detection element, control circuit and implementation mechanism. Four-way change-over switch was used as detection element of sensor, and combined with RS de-twitter circuit, to improve the reliability of the control system effectively. The implementation components that were composed of two electromagnetic clutches responded to the control circuit output, and ultimately actualized the real time control of feeding stalk and sending rope. Experiments show that the designed system can work accurately and reliably, with the baling rate to 100%, compared with manual control, the veracity of bale density control is strengthened effectively, and operating efficiency of the machine is improved by 20%.
Number of references: 11
Main heading: Control theory
Controlled terms: Automation - Harvesting - Process control - Real time control - Rope - Sensors
Uncontrolled terms: Automatic control systems - Control circuits - Control system designs - Corn stalk - Density control - Electromagnetic clutch - Implementation mechanisms - Operating efficiency - Operation efficiencies
Classification code: 819.4 Fiber Products - 801 Chemistry - 732.2 Control Instrumentation - 821.3 Agricultural Methods - 732 Control Devices - 731 Automatic Control Principles and Applications - 535 Rolling, Forging and Forming - 731.1 Control Systems
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
32. Accession number: 20095112566862
Title: Influence factors on physical properties and nutrient component for carrot micro-powder
Authors: Gong, Yuanjuan1 ; Zeng, Cheng2 ; Wang, Qiang1 ; Qin, Junwei1
Author affiliation: 1 Engineering College, Shenyang Agricultural University, Shenyang 110161, China
2 Food College, Shenyang Agricultural University, Shenyang 110161, China
Corresponding author: Gong, Y. (yuanjuangong@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural
Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date:
November 2009
Publication year: 2009
Pages: 124-128
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Analysis of physical properties and nutrient components of the carrot micro-powder showed that the carrot micro powder gained by the hot air drying and the microwave drying had the larger bulk density than by the freeze drying. Water solubility of the carrot micro-powder gained by the microwave drying was higher than gained by the freeze drying; water solubility of the raw carrot micro-powder was higher carrot than the cooked. The amino acid mass ratio of the raw carrot powder was higher than the cooked carrot powder, the freezing and thawing powder. Treated with the freeze-drying, the amino acid mass ratio of the raw carrot powder was the highest, and the powder granularity was smaller than 240 mesh. The vitamin C mass ratio of the carrot micro-powder processed by the freezing and thawing was higher than the raw and the cooked carrot powder. The vitamin C mass ratio of the carrot micro-powder processed by the freeze drying was the highest, and then the vacuum drying. The smaller the granularity was, the less the carotenoids mass ratio was; the carotenoids mass ratio and the vitamin C mass ratio ware the highest when the freeze-thaw carrot was processed by the freeze drying, and the granularity was 80 to 120 meshes.
Number of references: 15
Main heading: Drying
Controlled terms: Amination - Amines - Amino acids - Curing - Dewatering - Freezing - Microwave heating - Microwaves - Nutrients - Organic acids - Physical properties - Solubility - Ternary systems - Thawing
Uncontrolled terms: Bulk density - Freeze drying - Freeze-thaw - Freezing and thawing - Hot air drying - Influence factors - Mass ratio - Micro-powder processing - Micropowders - Microwave drying - Nutrient components - Powder processing - Vacuum drying - Vitamin C - Water solubilities
Classification code: 801.4 Physical Chemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804.1 Organic Compounds - 931.2 Physical Properties of Gases, Liquids and Solids - 815.1 Polymeric Materials - 821.2 Agricultural Chemicals - 822.2 Food Processing Operations - 822.3 Food Products - 818.3 Rubber and Elastomer Processing - 711.1 Electromagnetic Waves in Different Media - 711 Electromagnetic Waves - 454.3 Ecology and Ecosystems - 461 Bioengineering and Biology - 461.9 Biology - 531.1 Metallurgy - 531.2 Metallography - 619.1 Pipe, Piping and Pipelines - 642.1 Process Heating - 644.1 Refrigeration Methods
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
33. Accession number: 20095112566850
Title: Experiment of metal materials abrasive wear for alfalfa powder
Authors: Zhang, Wei1 ; Wu, Jinfeng1 ; Ma, Guojun1 ; Huang, Xiaopeng1
Author affiliation: 1 College of Engineering, Gansu Agricultural University, Lanzhou 730070, China
Corresponding author: Wu, J. (wujf@gsau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural
Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 64-67
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The abrasive testing machine with operation process similar to the pelleting circular mold was used, taking the alfalfa grass powder as abrasive material. The influences of alfalfa powder on the abrasive properties of four kind of metal materials were examined, by measuring the rigidity and chemical components of the abraded surfaces and analyzing of the microstructures and surface morphologies of the abraded surfaces. It is shown that the abrasive quantities of four samples as below are orderly increased, 3Cr13, 9SiCr, 45# steel, and HT200, some physical and chemical changes take place on the abraded surfaces, and "the soft abrasive wear" is accompanied by "the hard abrasive wear" feature due to the micro-cutting and strain fatigue.
Number of references: 10
Main heading: Surfaces
Controlled terms: Abrasion - Abrasive cutting - Abrasives - Metals - Pelletizing - Powder metals - Surface chemistry
Uncontrolled terms: Abrasive materials - Abrasive properties - Abrasive wear - Abrasive wears - Alfalfa grass - Alfalfa powder - Chemical change - Chemical component - Metal materials - Micro-cutting - Operation process - Testing machine
Classification code: 951 Materials Science - 931 Classical Physics; Quantum Theory; Relativity - 802.3 Chemical Operations - 801.4 Physical Chemistry - 606.2 Abrasive Devices and Processes - 606.1 Abrasive Materials - 604.2 Machining Operations - 604.1 Metal Cutting - 536 Powder Metallurgy - 533.1 Ore Treatment - 531 Metallurgy and Metallography
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
34. Accession number: 20095112566884
Title: Die-face-geometric parameters optimization based on response surface method
Authors: Chen, Wenlin1 ; Zou, Wenchao1 ; Cao, Jun1
Author affiliation: 1 School of Material Science and Engineering, Hefei University of Technology, Hefei 230009, China
Corresponding author: Chen, W. (cw18761@sina.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 236-239
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: More traditional die-face designs are carried out according to experience without considering the mapping function between design parameters and finite element simulation results. So it is difficulty to optimize the design parameters. In the present research, the basic principle of the sheet metal forming optimization by the response surface method was discussed, along with the replacement model of finite element simulation results. Specially, the design variables, the objective function, constraints and the multi-objective optimization approach in sheet metal forming optimization were introduced. Based on the response surface method, the inner panel of automotive suspension was studied, and the optimal model of the die-face-geometric parameters was established with the least blank thickness as the object, the die-face-geometric parameters as the variables and the constraints as the FLD. Finally the die-face-geometric parameters were optimized. With the optimal parameters, the pressing test was carried out to verify the optimization result.
Number of references: 9
Main heading: Finite element method
Controlled terms: Design - Dies - Large scale systems - Metal forming - Multiobjective optimization - Sheet metal - Simulators - Surface properties
Uncontrolled terms: Automotive suspensions - Basic principles - Design parameters - Design variables - Finite element simulations - Geometric parameter - Mapping functions - Objective functions - Optimal model - Optimal parameter - Replacement models - Response surface method - Sheet forming
Classification code: 662.1 Automobiles - 671 Naval Architecture - 731.1 Control Systems - 902.1 Engineering Graphics - 961 Systems Science - 912.3 Operations Research - 921.6 Numerical Methods - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science - 921.5 Optimization Techniques - 657.1 Solar Energy and Phenomena - 655.2 Satellites - 408 Structural Design - 461.1 Biomedical Engineering - 534.1 Foundries - 535.1 Metal Rolling - 535.2 Metal Forming - 603.2 Machine Tool Accessories - 621 Nuclear Reactors - 654.1 Rockets and Missiles
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
35. Accession number: 2009511256685
Title: Influence of supporting shape on the hydraulic performance of bulb tubular pumps
Authors: Jin, Yan1 ; Liu, Chao1 ; Tang, Fangping1 ; Zhou, Jiren1
Author affiliation: 1 College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China
Corresponding author: Liu, C. (liuchao@yzu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 78-82
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Bulb tubular pumps have small hydraulic loss and high pumping system efficiency, which especially suit to the low lift head, large discharge and long running time situation. Bulb supporting units which including manhole and bottom supporting are important flow-passage components of bulb tubular pump. The turbulent flow in a bulb tubular pump with different supporting shapes was simulated by CFD method. The results of the calculation indicated that the shape of supporting has a marked influence on hydraulic loss in the discharge passage and flow pattern. Therefore, reasonable shape of supporting can improve the turbulent flow pattern, reduce the circumference velocity and increase the pumping system efficiency.
Number of references: 11
Main heading: Pumps
Controlled terms: Computational fluid dynamics - Computer simulation - Flow patterns - Hydraulics - Photoacoustic effect - Pumping plants - Turbulent flow
Uncontrolled terms: CFD method - Hydraulic loss - Hydraulic performance - Numerical simulation - Pumping systems - Running time - Supporting - Supporting systems
Classification code: 921.6 Numerical Methods - 751.1 Acoustic Waves - 741.1 Light/Optics - 723.5 Computer Applications - 632.1 Hydraulics - 931.1 Mechanics - 631.1.2 Gas Dynamics - 631.1 Fluid Flow, General - 618.2 Pumps - 446 Waterworks - 402.1 Industrial and Agricultural Buildings - 631.1.1 Liquid Dynamics
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
36. Accession number: 20095112566883
Title: Benchmark test and FEM simulation of aluminum alloy sheet forming
Authors: Yan, Kangkang1 ; Hu, Ping1, 2 ; Guo, Wei3
Author affiliation: 1 College of Automotive Engineering, Jilin University, Changchun 130025, China
2 School of Automotive Engineering, Dalian University of Technology, Dalian 116024, China
3 School of Materials Science and Engineering, Jilin University, Changchun 130025, China
Corresponding author: Guo, W. (guowei@jlu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural
Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 232-235
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Adopting the Benchmark test scheme of a cylindrical cup deep drawing proposed by NUMISHEET2002, the deep draw ability, anisotropic behavior and wrinkling of aluminum alloy 6111T4 sheet were researched under different blank holder force (BHF) conditions. The results show that the formability of aluminum alloy sheet is hardly influenced by small anisotropic coefficient, and wrinkling can be eliminated effectively by increasing BHF, therefore aluminum alloy 6111T4 sheet has excellent stamping formability. Based on the platform of KMAS, self-developed sheet metal forming CAE software, Benchmark test was simulated, and the results were compared with that of the test. KMAS software, adopting Barlat-Lian anisotropic yield criteria and dynamic semi-explicit algorithm, is able to simulate aluminum alloy sheet forming accurately.
Number of references:10
Main heading: Aluminum alloys
Controlled terms: Aluminum - Aluminum metallurgy - Aluminum sheet - Anisotropy - Computer software - Deep drawing - Drawing (forming) - Finite element method - Metal forming - Testing
Uncontrolled terms: Aluminum alloy 6111 - Aluminum alloy sheet - Anisotropic behaviors - Benchmark test - Benchmark tests - Blank holder forces - CAE software - Cylindrical cups - Deep-draw - Explicit algorithms - FEM simulations - KMAS software - Yield criteria
Classification code: 931.2 Physical Properties of Gases, Liquids and Solids - 921.6 Numerical Methods - 816.1 Processing of Plastics and Other Polymers - 723 Computer Software, Data Handling and Applications - 541.2 Aluminum Alloys - 541.1 Aluminum - 535.2 Metal Forming - 535.1 Metal Rolling - 531.1 Metallurgy - 423.2 Test Methods - 422.2 Test Methods
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
37. Accession number: 20095112566859
Title: Construction of pore network model of fractal porous media
Authors: Gong, Yingzhen1 ; Niu, Haixia1 ; Dong, Zhengmao2 ; Liu, Xiangdong1
Author affiliation: 1 College of Engineering, China Agricultural University, Beijing 100083, China
2 Mechanical and Electrical Engineering College, Inner Mongolia Agricultural University, Huhhot 010018, China
Corresponding author: Liu, X. (xdliu@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural
Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 109-114 108
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The micro-structure parameters of the actual porous media through mercury intrusion experiment were obtained, and the fractal dimension of pore distribution was calculated, taking frozen-dried potato for example. The result showed that the pores in the freeze-dried potato presented the remarkably fractal properties. A two-dimensional fractal pore network model of porous media was constructed based on the theories of homothetic reduction, fractal geometry, Voronoi diagram, along with the structural parameter of potato. Since pore microstructure characteristic was considered into the model, the parameter of network model can well reflect the microstructure of porous materials, and the reasonable fractal dimension was obtained.
Number of references: 19
Main heading: Fractal dimension
Controlled terms: Dewatering - Mercury (metal) - Microstructure - Partial discharges - Porous materials - Security of data
Uncontrolled terms: Fractal geometry - Fractal pore network model - Fractal porous media - Fractal properties - Mercury intrusion - Microstructure characteristics - Network models - Pore distribution - Pore networks - Pore-network models - Porous Media - Structural parameter - Voronoi - Voronoi diagrams
Classification code: 951 Materials Science - 933 Solid State Physics - 921 Mathematics - 802.3 Chemical Operations - 801.4 Physical Chemistry - 723.2 Data Processing and Image Processing - 701.1 Electricity: Basic Concepts and Phenomena - 549.3 Others, including Bismuth, Boron, Cadmium, Cobalt, Mercury, Niobium, Selenium, Silicon, Tellurium and Zirconium - 531.2 Metallography
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
38. Accession number: 20095112566871
Title: Obstacle identification of citrus harvesting robot
Authors: Cai, Jianrong1 ; Zhou, Xiaojun1 ; Wang, Feng1 ; Lü, Qiang1
Author affiliation: 1 School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author: Cai, J. (jrcai@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 171-175
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A method of branch identification for citrus harvesting robot was proposed. According to the characteristics of obstacle that citrus harvesting robot met, such as branch, the 3-D information of obstacle was restored by extracting and processing the skeleton of obstacle image. The branch region was obtained using image segmentation, morphologic processing and region labeling. Then the skeleton of obstacle was extracted by thinning, and the feature points such as endpoint and branch point of the skeleton was found out, to record their connecting relationship. Finally the 3-D information of obstacle was restored by stereo matching on feature points. Experimental results showed that the identification accuracy of obstacle can reach 67.3%, and the identification error ratio is increased when the actual distance of obstacle is more than 1.5m.
Number of references: 8
Main heading: Three dimensional
Controlled terms: Harvesting - Image processing - Restoration - Robots
Uncontrolled terms: 3D information - Actual distance - Branch identification - Branch points - Feature point - Harvesting robot - Identification accuracy - Identification errors - Picking robot - Region labeling - Stereo matching
Classification code: 902.1 Engineering Graphics - 821.3 Agricultural Methods - 741 Light, Optics and Optical Devices - 731.6 Robot Applications - 913.5 Maintenance - 731.5 Robotics - 723.2 Data Processing and Image Processing - 409 Civil Engineering, General - 402 Buildings and Towers - 723.5 Computer Applications
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
39. Accession number: 20095112566878
Title: Identification of turbulent coherent structures based on wavelet and bi-spectrum analysis
Authors: Zhang, Bin1 ; Wang, Tong1 ; Gu, Chuan'gang1 ; Dai, Zhengyuan2
Author affiliation: 1 Key Laboratory for Power Machinery and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2 Trane's Asia-Pacific Research Center, Shanghai 200001, China
Corresponding author: Zhang, B. (sjtu2009@sjtu.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural
Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 203-207
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: It is very important to develop a more effective and objective method to get more quantified information of coherent structures from the turbulent signal. Based on wavelet and bi-spectrum analysis, a reasonable method was put forward. The large eddy signal including the information of coherent structures was extracted by the bi-spectrum and cross correlation analysis, and multi-scale coherent structures were detected by the wavelet transform. Besides, by using wavelet analysis, a new identification criterion of energy-containing scale was established. The reliability and rationality of the method was verified by an example with the sample data from the experiment on the mechanism of rib-lets drag reduction. Furthermore, this research has also led to the conclusion that the multi-scale characteristics of coherent structures can be gotten by the above method.
Number of references: 11
Main heading: Spectrum analysis
Controlled terms: Interferometry - Spectrum analyzers - Turbulence - Wavelet analysis - Wavelet transforms
Uncontrolled terms: Bispectrum - Coherent structure - Cross-correlation analysis - Energy-containing scale - Large eddy - Multiscales - Objective methods - Sample data - Turbulent coherent structures
Classification code: 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941.4 Optical Variables Measurements - 941 Acoustical and Optical Measuring Instruments - 932.3 Plasma Physics - 922.2 Mathematical Statistics - 921.3 Mathematical Transformations - 921 Mathematics - 723.2 Data Processing and Image Processing - 703.2.1 Electric Filter Analysis - 631.1 Fluid Flow, General - 443.1 Atmospheric Properties
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
40. Accession number: 20095112566844
Title: Design and experiment of 4YF-1300 large rectangular baler
Authors: Wang, Fengde1 ; Chen, Zhi1 ; Wang, Junyou1 ; Wang, Xiongwei1 ; Chen, Feng1
Author affiliation: 1 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Wang, F. (fengdewang@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 36-41
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The basic structure and work principle of large rectangular baler were introduced. To satisfy the bundling compression property of maize straw and the load system require of burning straw generate electricity, gearbox, materiel collect and feed system, mechanical pre-compressing unit, baler plunger and hydraulic control system were design and computed. Collect and feed parameter, second pre-compressing principle and hydraulic control system were reasonably adopted to ensure the work dependability. The result indicated that the fully bale rate of 4YF-1300 large rectangular baler can achieve 97.2%, the regular bale percent is 94.4%, and bale density can achieve 190~210kg/m3, which can satisfy the performance request of large rectangular baler.
Number of references: 16
Main heading: Mechanical properties
Controlled terms: Electric properties - Experiments - Hydraulic machinery - Hydraulics
Uncontrolled terms: Basic structure - Compression properties - Feed systems - Generate electricity - Hydraulic control systems - Large rectangular baler - Load systems - Maize straw - Mechanical pre-compression - Pre-compression - Work principle
Classification code: 951 Materials Science - 931.2 Physical Properties of Gases, Liquids and Solids - 931.1 Mechanics - 901.3 Engineering Research - 701.1 Electricity: Basic Concepts and Phenomena - 632.2 Hydraulic Equipment and Machinery - 632.1 Hydraulics
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
41. Accession number: 20095112566875
Title: Realization of load spectrum data management system for typical agricultural machinery based on hybrid model
Authors: Meng, Qingrui1 ; Tian, Zhaofeng1 ; Zhang, Shuming1 ; Yan, Chuliang1
Author affiliation: 1 Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Corresponding author: Meng, Q. (mengqingrui@gmail.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 189-192
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Against the background of implementing load spectrum data managementsystem of the typical agricultural machinery, the load spectrum data management system was designed and implemented using the technology of . NET in the mixed model of C/S and B/S. Then overall plan and structure model of the system were worked out according to actual situation and detailed requirements of engineering application. Finally, each system module was coded and debugged. Thus, it can be implemented for the modernization management of load spectrum data, adding communication channels and improving efficiency of structural fatigue research.
Number of references: 7
Main heading: Agricultural machinery
Controlled terms: Hybrid sensors - Management - Reconnaissance aircraft
Uncontrolled terms: Browser/server - Client/server - Hybrid model - Load spectrum - Load spectrum database
Classification code: 404.1 Military Engineering - 652.1.2 Military Aircraft - 723.2 Data Processing and Image Processing - 732.2 Control Instrumentation - 821.1 Agricultural Machinery and Equipment - 912.2 Management
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
42. Accession number: 20095112566865
Title: Optimization of the preparation of glycated egg white protein by Box-Behnken model
Authors: Yu, Bin1 ; Chi, Yujie1
Author affiliation: 1 Department of Food Science, Northeast Agricultural University, Harbin 150030, China
Corresponding author: Chi, Y. (yjchi@126.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 138-143
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Box-Behnken model was used to optimize the glycation process of egg white protein. The emulsifying properties of glycated egg white protein (GEWP) were determined and analysed in various conditions. The results showed that the optimized condition of glycation reaction was as follows: 9% of ratio of dextran, 48 hours of time of reaction, 60°C of temperature of reaction. Then, emulsifying activity and emulsion stability of GEWP, are 1.328 and 9.63min, 3.7 and 8.75 fold against egg white protein respecitvely. The correlation between degree of glycation and emulsifying activity or emulsion stability of GEWP accords with Lerentz function. The emulsifying properties of GEWP were not affected in acidic pH value and high ionic strength. The results show that glycation is an efficient method to improve emulsifying properties of egg white protein.
Number of references: 18
Main heading: Emulsification
Controlled terms: Glucose - Ionic strength - Optimization - Proteins
Uncontrolled terms: Box-Behnken - Box-Behnken model - Egg white proteins - Emulsifying property - Glycation
Classification code: 801.4 Physical Chemistry - 802.3 Chemical Operations - 804.1 Organic Compounds - 822.3 Food Products - 921.5 Optimization Techniques
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
43. Accession number: 20095112566880
Title: Forward positional analysis of 6-CPS orthogonal parallel manipulators
Authors: Che, Linxian1, 2
Author affiliation: 1 School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221008, China
2 Institute of Mechatronics Engineering, Luzhou Vocational and Technical College, Luzhou 646005, China
Corresponding author: Che, L. (lx.che@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural
Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 212-218
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A 6DOF 6-CPS orthogonal parallel manipulator was presented, based on the theory of the structure synthesis for parallel robot mechanisms. The forward kinematics of the manipulator was studied to analyze the positive positional solutions. With the restrict condition of the lengths of six actuated limbs, the constrained equations were established, and the nonlinear equations (NLEs) were obtained to solve forward positional problems of the mechanism. Based on the Chen-Lai algorithm, by means of which chaos was generated or modified, a discrete-time dynamical system was feedback controlled to be transferred to a chaotic system that has the expected Lyapunov exponent and good ergodicity. The chaotification-based Newton iterative algorithm (CBNIA) was utilized to solve NLEs for forward displacement analysis of 6-CPS orthogonal parallel manipulators. The results of numerical verification show that through the CBNIA, all forward solutions can be quickly found that are very coincident with the inverse ones.
Number of references: 19
Main heading: Manipulators
Controlled terms: Chaotic systems - Differential equations - Iterative methods - Nonlinear equations - Parallel algorithms - Robots
Uncontrolled terms: Chaotification - Discrete-time dynamical systems - Ergodicity - Forward displacement analysis - Forward kinematics - Iterative algorithm - Lyapunov exponent - Newton iterative methods - Numerical verification - Parallel manipulators - Parallel robot mechanisms - Positional analysis - Structure synthesis
Classification code: 931 Classical Physics; Quantum Theory; Relativity - 921.6 Numerical Methods - 921.2 Calculus - 921.1 Algebra - 961 Systems Science - 921 Mathematics - 731.5 Robotics - 723 Computer Software, Data Handling and Applications - 691.1 Materials Handling Equipment - 731.6 Robot Applications
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
44. Accession number: 20095112566881
Title: Transmission error and noise experiment on meshing of the straight profiled internal gear with the involute external gear
Authors: Deng, Xiaozhong1 ; Xu, Kai2 ; Pan, Shicheng1 ; Ren, Xiaozhong1
Author affiliation: 1 College of Eletromechanical Engineering, Henan University of Science and Technology, Luoyang 471003, China
2 College of Mechanical and Electronical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
Corresponding author: Deng, X. (DXZ01@163.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural
Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 219-222
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: By substituting the straight tooth profile for the involute one, the internal gears with hard tooth face was easily grounded in form grinding. By means of the tooth contact analysis(TCA) technology and loaded tooth contact analysis(LTCA) technology, stress condition, load share between teeth, transmission error were studied, when meshing the internal gear with straight profile with involute external gear. The noise of the planetary reducers with both straight tooth profile internal gear and involute tooth profile was collected respectively by rig experiment. By analysing the collected data, the dynamic transmission performance of internal gear with straight tooth profile was studied. The internal gear with straight tooth profile has the performance of "edge trimming" and a much smaller transmission error variations under loading than no-loading, as a result, it is fully feasible to use the internal gears with straight tooth profile in industry.
Number of references: 5
Main heading: Dentistry
Controlled terms: Gear teeth
Uncontrolled terms: Form grinding - Internal gear - Involute tooth profile - Load share - Stress condition - Tooth contact analysis - Tooth profile - Transmission error - Transmission performance
Classification code: 461.1 Biomedical Engineering - 461.6 Medicine and Pharmacology - 462.3 Dental Equipment and Supplies - 601.2 Machine Components
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
45. Accession number: 20095112566854
Title: Numerical simulation of pressure fluctuation and radial force in a double volute pump
Authors: Yang, Min1 ; Min, Siming2 ; Wang, Fujun1
Author affiliation: 1 College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China
2 KSB Shanghai Pump Co., Ltd., Shanghai 200245, China Corresponding author: Wang, F. (wangfj@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural
Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 83-88
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The three-dimensional, unsteady Reynolds-averaged Navier-Stokes equations with shear stress transport turbulent (SST) models were solved to investigate the flow field and the characteristic of pressure fluctuations in the double volute. The results show that the pressure fluctuations are strong in the double volute. The pressure fluctuations in the volute are relatively low at the design flow rate condition. The blade passing frequency dominates the pressure fluctuations near the volute tongue and the clapboard at the design flow rate condition. The amplitude of the pressure fluctuation is largest at the beginning of clapboard, which is 2.5 times larger than at the volute tongue. At the large flow rate condition, the blade passing frequency is also dominative in the pressure fluctuations, but at the small flow rate condition the rotation frequency becomes dominative. The radial force on the impeller is unsteady especially at the small flow rate. At three flow rates, the radial forces all point at the beginning of clapboard.
Number of references: 13
Main heading: Mathematical models
Controlled terms: Navier Stokes equations - Pumps - Simulators - Three dimensional
Uncontrolled terms: Blade passing frequency - Design flow rate - Large flow rate - Numerical simulation - Pressure fluctuation - Radial force - Radial forces - Rotation frequencies - Shear-stress transport - Small flow-rate - Unsteady reynolds-averaged navier-stokes
Classification code: 931.1 Mechanics - 921.2 Calculus - 921 Mathematics - 902.1 Engineering Graphics - 723.5 Computer Applications - 671 Naval Architecture - 662.1 Automobiles - 657.1 Solar Energy and Phenomena - 655.2 Satellites - 654.1 Rockets and Missiles - 631.1 Fluid Flow, General - 621 Nuclear Reactors - 618.2 Pumps
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
46. Accession number: 20095112566856
Title: Digital controller for PV pumping based on synchronous rectification
Authors: Wei, Haifeng1 ; Li, Pingping1 ; Bao, Xiaoming2
Author affiliation:1 Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Zhenjiang 212013, China
2 Grundfos Pumps (China) Co. Ltd., Suzhou 215126, China
Corresponding author: Li, P. (lipingping@ujs.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural
Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 94-98
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A novel digital controller solution was proposed, according to the actual driving of PV pumping system. To reduce freewheeling power consumption, MOSFET was used as freewheeling current path instead of diode based on synchronous rectification, which was helpful to reduce temperature of the controller and to improve the system reliability. The deadbeat digital controller was designed based on adaptive UKF, to identify and modify system parameters on line. Simulation and experimental results show that the designed scheme is easy to digital implementation, valid for parameters identification, and has higher current control precision. Therefore, it is effective to improve the performance of PV pumping system.
Number of references: 15
Main heading: Adaptive control systems
Controlled terms: Controllers - Electric rectifiers - Nonlinear filtering - Photovoltaic effects - Pumping plants - Pumps
Uncontrolled terms: Current control - Deadbeat control - Digital controllers - Digital implementation - Freewheeling current - MOS-FET - Parameters identification - Power Consumption - PV pumping - Synchronous rectification - System reliability
Classification code: 732.1 Control Equipment - 731.1 Control Systems - 716.1 Information Theory and Signal Processing - 714.2 Semiconductor Devices and Integrated Circuits - 714.1 Electron Tubes - 741.1 Light/Optics - 712.1 Semiconducting Materials - 701.1 Electricity: Basic Concepts and Phenomena - 618.2 Pumps - 446 Waterworks - 402.1 Industrial and Agricultural Buildings - 704.2 Electric Equipment
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
47. Accession number: 20095112566857
Title: Moisture absorption properties of the yellow dextrin/straw fibers composites
Authors: Zhang, Fu1 ; Fu, Sanling2 ; Tong, Jin3 ; Zhou, Jiang3 ; Zhang, Guoying1
Author affiliation: 1 College of Vehicle and Motive Power Engineering, Henan University of Science and Technology, Luoyang 471003, China
2 College of Science, Henan University of Science and Technology, Luoyang 471003, China
3 College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
Corresponding author: Zhang, F.
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 99-102 143
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: The hygroscopicity of the yellow dextrin/straw fiber composites at different relative humidity conditions was researched. The model of hygroscopicity and its variational rate was set up. The favorable water resisting property for the composites was obtained, on the two following groups conditions: the straw fibers of 100g, the water of 40g, the yellow dextrin of 20g, the hot pressing temperature of 170°C, the hot pressing pressure of 4.2MPa, the hot pressing time of 30min; and the straw fibers of 100g, the water of 40g, the yellow dextrin of 10g, the hot pressing temperature of 170°C, the hot pressing pressure of 9.8MPa, the hot pressing time of 20min respectively. The hot-pressing temperatures of two groups were both higher than in common. So the preparation process should focus attention on hot-pressing temperature factors. The research can provide reference for applying of the moisture absorption properties of the yellow dextrin/straw fibers composites.
Number of references: 5
Main heading: Hot pressing
Controlled terms: Absorption - Atmospheric humidity - Fibers - Fluorine containing polymers - Moisture - Plastic deformation
Uncontrolled terms: Composite - Fiber composite - Hot pressing pressure - Hot pressing temperature - Moisture absorption property - Preparation process - Relative humidities - Water-resisting
Classification code: 931.2 Physical Properties of Gases, Liquids and Solids - 931.1 Mechanics - 819.4 Fiber Products - 817 Plastics and Other Polymers: Products and Applications - 815.1 Polymeric Materials - 812.2 Refractories - 812.1 Ceramics - 812 Ceramics, Refractories and Glass - 802.3 Chemical Operations - 801.4 Physical Chemistry - 536.1 Powder Metallurgy Operations - 443.1 Atmospheric Properties - 421 Strength of Building Materials; Mechanical Properties
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
48. Accession number: 20095112566873
Title: Separating adjoined apples based on machine vision and information fusion
Authors: Zhang, Yajing1 ; Li, Minzan1 ; Liu, Gang1 ; Qiao, Jun1
Author affiliation: 1 Key Laboratory of Modern Precision Agriculture System Integration Research, China Agricultural University, Beijing 100083, China
Corresponding author: Li, M. (limz@cau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 180-183
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: A method using intensity and color information for separating adjoined appleswas proposed. First, Lab model was employed to segment the apple images, followed by each segmented area was calculated to judge whether they were adjoined area or not. Then the intensity information was added to the adjoined area, and the light spot of apple was used to separate the adjoined apples. Thus, the noise from intensity information was screened by the Lab information in the area besides adjoined apples, and the adjoined apples was segmented using the unique intensity information in the adjoined area. The result of segmentation showed that the success rate is over 92.89%. It is useful to use the algorithm in practical recognition of apple fruits.
Number of references: 12
Main heading: Fruits
Controlled terms: Agricultural products - Computer vision - Digital image storage - Image fusion - Image segmentation - Information fusion - Information use
Uncontrolled terms: Apple - Apple fruits - Color information - Intensity information - Lab models - Light spot - On-machines
Classification code: 903.3 Information Retrieval and Use - 903.1 Information Sources and Analysis - 821.4 Agricultural Products - 741.3 Optical Devices and Systems - 741.2 Vision - 741.1 Light/Optics - 731.6 Robot Applications - 723.5 Computer Applications - 723.2 Data Processing and Image Processing - 722.4 Digital Computers and Systems - 722.1 Data Storage, Equipment and Techniques
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
49. Accession number: 20095112566866
Title: Cross-linking of casein by peroxidase and modification in emulsifying properties
Authors: Zhao, Xinhuai1 ; Li, Junwen1
Author affiliation: 1 Key Lab of Dairy Science, Northeast Agricultural University, Harbin 150030, China
Corresponding author: Zhao, X. (zhaoxh@mail.neau.edu.cn)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 144-149
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Cross-linking of casein catalyzed by horseradish peroxidase was studied, which was demonstrated by SDSPAGE analysis, spectroscopic analysis and capillary electrophoresis analysis. The cross-linking degree of casein was measured by capillary electrophoresis with an area normalization method. Response surface method was applied to optimize the reaction conditions for cross-linked casein. The optimal cross-linking conditions obtained were that enzyme addition level was 4.73 μkat per gram protein, temperature was 37°C and reaction time was 2.9h. Under these optimal conditions, the cross-linking degree of casein prepared was about 6.9%. Evaluation results show that emulsifying activity index of cross-linked casein at concentration of 0.01% has an increase of 8.7%, while emulsifying stability index of cross-linked casein at concentration of 0.03% has an increase of 21.1% comparing to that of native casein, which indicates the improvement in emulsifying properties of cross-linked casein.
Number of references: 12
Main heading: Emulsification
Controlled terms: Capillary electrophoresis - Casein - Electrochemistry - Optimization - Spectroscopic analysis
Uncontrolled terms: Area normalization - Capillary electrophoresis analysis - Concentration of - Cross-linking degree - Emulsifying activity indices - Emulsifying property - Emulsifying stabilities - Evaluation results - Horse-radish peroxidase - Optimal conditions - Reaction conditions - Reaction time - Response surface method - SDS-PAGE analysis
Classification code: 822.3 Food Products - 804.1 Organic Compounds - 802.3 Chemical Operations - 921.5 Optimization Techniques - 801.4.1 Electrochemistry - 801 Chemistry - 701.1 Electricity: Basic Concepts and Phenomena - 801.3 Colloid Chemistry
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
50. Accession number: 20095112566877
Title: Fractal model and simulation of normal contact stiffness of joint interfaces and its simulation
Authors: Wen, Shuhua1 ; Zhang, Xueliang1 ; Wu, Meixian1 ; Wen, Xiaoguang1 ; Wang, Pengyun1
Author affiliation: 1 Mechanical and Electronic Engineering College, Taiyuan University of Science and Technology, Taiyuan 030024, China
Corresponding author: Wen, S. (kd_wsh@sina.com)
Source title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated source title: Nongye Jixie Xuebao
Volume: 40
Issue: 11
Issue date: November 2009
Publication year: 2009
Pages: 197-202
Language: Chinese
ISSN: 10001298
CODEN: NUYCA3
Document type: Journal article (JA)
Publisher: Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
Abstract: Based on contact fractal theory and micro-contact size distribution function, a fractal model of normal contact stiffness of joint interfaces was proposed, considering the influence of the domain extension factor for micro-contact size distribution. Furthermore, numerical simulation was carried out to obtain the nonlinear relationships between normal contact stiffness and characteristic parameters of joint interfaces. And the effect of these parameters on the normal contact stiffness was also analysed. The results show that the normal contact stiffness of joint interfaces increases with the normal load on joint interface, decreases with the fractal characteristic length scale parameter G, however, complicatedly varies with the fractal dimension D.
Number of references: 10
Main heading: Fractal dimension
Controlled terms: Distribution functions - Simulators - Size distribution - Stiffness
Uncontrolled terms: Characteristic parameter - Contact stiffness - Fractal characteristics - Fractal model - Fractal theory - Joint interfaces - Micro-contact - Non-linear relationships - Normal loads - Numerical simulation
Classification code: 662.1 Automobiles - 671 Naval Architecture - 921 Mathematics - 951 Materials Science - 922.1 Probability Theory - 931.2 Physical Properties of Gases, Liquids and Solids - 933.1 Crystalline Solids - 922.2 Mathematical Statistics - 657.1 Solar Energy and Phenomena - 655.2 Satellites - 421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 423 Non Mechanical Properties and Tests of Building Materials - 531.2 Metallography - 621 Nuclear Reactors - 654.1 Rockets and Missiles
Database: Compendex
Compilation and indexing terms, ? 2009 Elsevier Inc.
? 2009 Elsevier Inc. All rights reserved.
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