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   2012年第43卷第2期共收錄44篇
1. Accession number:20121114853342
  Title:Deposition and distribution characteristics of air-assisted electrostatic spraying by wind-curtain
  Authors:Wang, Junfeng1 ; Zhang, Juanjuan1 ; Wang, Zhentao1 ; Huo, Yuanping1 ; Wang, Ze1 
  Author affiliation:1  School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:Wang, J. (wangjunfeng@ujs.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:61-65
  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:Due to spray drift and less penetration into the crop canopy by conventional pesticide application methods, a wind-curtain air-assisted spraying system under a no-canopy condition was evaluated by using electronic scale to weigh deposition on the plane. Overall deposition and distribution of electrostatic spray and un-electrostatic spray on different heights with different wind velocities was investigated. Effects of the field of wind-curtain on deposition and distribution of spraying was analyzed. Results showed that the wind-curtain decreased transversal diffusion of spray drop which centralize spray deposition in narrow region near the centre and repress spray drift. The air flow enhance disturbance of spray field which enhanced uniformity of deposition of electrostatic spray and un-electrostatic spray along the axial direction of the boom. The air jet increased momentum of small droplets far away the nozzle and the greater air curtain velocity the greater impact on distribution of spraying.
  Number of references:12
  Main heading:Spray nozzles
  Controlled terms:Drop formation  -  Electronic scales  -  Electrostatics
  Uncontrolled terms:Air-assistance  -  Droplet distribution  -  Electrostatic spraying  -  Spray drift  -  Wind-curtain
  Classification code:631.1 Fluid Flow, General  -  701.1 Electricity: Basic Concepts and Phenomena  -  715 Electronic Equipment, General Purpose and Industrial  -  931.2 Physical Properties of Gases, Liquids and Solids
  DOI:10.6041/j.issn.1000-1298.2012.02.013
  Database:Compendex

2. Accession number:20121114853367
  Title:Approach of intelligent STEP-NC controller under Linux Rtai
  Authors:Li, Peng1 ; Hu, Tianliang2 ; Zhang, Chengrui2 
  Author affiliation:1  School of Mechanical Engineering, Shandong University, Ji'nan 250061, China
                 2  Key Laboratory of High-Efficiency and Clean Mechanical Manufacture, Ministry of Education, Shandong University, Ji'nan 250061, China
  Corresponding author:Hu, T. (tlhu@sdu.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:198-204
  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 intelligent STEP-compliant CNC controller was studied and designed under Linux Rtai. A CNC expert knowledge-base was established by importing the theory of ontology. The hardware interface in the bottom layer was realized beyond the self-developed real-time Ethernet fieldbus platform. A prototype was developed under universal Linux with Rtai embedded and the feasibility of this scenario was validated. This CNC controller had the capability of programming and re-planning on the shop floor. It could make decisions by itself to some extent and support distributed control. The whole system was characterized by openness, intelligence and flexibility.
  Number of references:7
  Main heading:Computer operating systems
  Controlled terms:Computer control systems  -  Distributed parameter control systems  -  Ontology
  Uncontrolled terms:Bottom layers  -  CNC controllers  -  Distributed control  -  Expert knowledge-base  -  Fieldbus  -  Hardware interfaces  -  Linux Rtai  -  Re-planning  -  Real time Ethernet  -  Shop floor   -  STEP-NC
  Classification code:722 Computer Systems and Equipment  -  723 Computer Software, Data Handling and Applications  -  731.1 Control Systems  -  903 Information Science
  DOI:10.6041/j.issn.1000-1298.2012.02.038
  Database:Compendex

3. Accession number:20121114853363
  Title:PLS algorithm application in hyperspectral estimation of pigment contents in processing tomato leaves under powdery mildew
  Authors:Yin, Xiaojun1, 2 ; Li, Manchun1 ; Zhao, Sifeng3 ; Wang, Dengwei3 
  Author affiliation:1  College of Geography and Ocean, Nanjing University, Nanjing 210093, China
                 2  College of Information Science and Technology, Shihezi University, Shihezi 832000, China
                 3  College of Agriculture, Shihezi University, Shihezi 832000, China
  Corresponding author:Yin, X. (penseyinxj@163.com) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:175-180
  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 traditional and new spectral characteristic parameters were used to estimate the pigment content of leaves by employing PLS algorithm. Therefore the pigment content of leaves under powdery mildew in processing tomato could be estimated and tested. The result showed that the sensitive bands of original and opposing spectrum were 350-718 nm, 719-839 nm and 350-718 nm, 728-857 nm, respectively. Then three groups named PGP, PGT and TTT were composed, including the optimal 9 spectral characteristic parameters from either traditional or new parameters (PSNDa, GNDVI, PSSRa, PSSRb, GM, TPMPa, TPMPb, TPMPc and TPMPd). After estimating the pigment content, the best estimation model was TTT.
  Number of references:19
  Main heading:Estimation
  Controlled terms:Algorithms  -  Fruits  -  Fungi
  Uncontrolled terms:Estimation models  -  HyperSpectral  -  New parameters  -  Partial least-squares method  -  Powdery mildew  -  Spectral characteristics  -  Tomato leaves
  Classification code:461.9 Biology  -  821.4 Agricultural Products  -  921 Mathematics
  DOI:10.6041/j.issn.1000-1298.2012.02.034
  Database:Compendex

4. Accession number:20121114853340
  Title:Biomass seeding bowl and molding equipment
  Authors:Liu, Hongjie1 ; Liu, Junfeng1 ; Hao, Jianjun1 ; Li, Jianping1 
  Author affiliation:1  Mechanical and Electronic Engineering College, Agricultural University of Hebei, Baoding 071000, China
  Corresponding author:Liu, H. (liuhj@hebau.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:52-54 74
  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:For the great deal need of peat resource in plant breeding, based on protection peat resource and use of renewable resources, crop straw was used as the main materials to product nutritive bowl, and corresponding substrate loading and molding equipment were designed. Experimental study indicated crop straw as substrate of nutritive bowl had good prospects, the foundation for efficient mass production nutritive bowl were established by development and application substrate loading and molding equipment.
  Number of references:11
  Main heading:Equipment
  Controlled terms:Biomass  -  Crops  -  Loading  -  Molding  -  Peat  -  Seed
  Uncontrolled terms:Application substrates  -  Experimental studies  -  Mass production  -  Molding equipment  -  Nutritive bowl  -  Plant breeding  -  Renewable resource  -  Substrate loading
  Classification code:901 Engineering Profession  -  821.5 Agricultural Wastes  -  821.4 Agricultural Products  -  672 Naval Vessels  -  535.2 Metal Forming  -  524 Solid Fuels  -  503 Mines and Mining, Coal
  DOI:10.6041/j.issn.1000-1298.2012.02.011
  Database:Compendex

5. Accession number:20121114853373
  Title:Multi-variation design method of Hy-Vo silent chain
  Authors:Meng, Fanzhong1 ; Qu, Shaopeng2 ; Dong, Chengguo2 
  Author affiliation:1  Chain Transmission Institute, Jilin University, Changchun 130025, China
                 2 College of Mechanical Science and Engineering, Jilin University, Changchun 130025, China
  Corresponding author:Meng, F. (fzm75@tom.com) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:230-234
  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 multi-variation characteristic of Hy-Vo silent chain was presented. The meshing design system with silent chain, sprocket and sprocket hob was built. The right meshing necessary condition of Hy-Vo silent chain and sprocket wheel was presented. It was indicated that the consistency of the chain pitch and the virtual side-center distance was the important base condition of the multi-variation when the Hy-Vo silent chain was tense. The interrelation of the enlaced circularity and tangency circularity were analyzed in the meshing design process. The practice showed that the multi-variation design method of the Hy-Vo silent chain was an important way to realize product innovation upgrade and intellectual property rights protection. This is the scientific and practical method.
  Number of references:6
  Main heading:Wheels
  Controlled terms:Intellectual property  -  Product design  -  Sprockets
  Uncontrolled terms:Design method  -  Design process  -  Design systems  -  Intellectual property rights  -  Multi-variation  -  Practical method  -  Product innovation  -  Silent chain
  Classification code:601.2 Machine Components  -  902.3 Legal Aspects  -  913.1 Production Engineering
  DOI:10.6041/j.issn.1000-1298.2012.02.044
  Database:Compendex

6. Accession number:20121114853370
  Title:Shape from shading based on support vector regression algorithm
  Authors:Hu, Zhiyong1 ; Zhang, Xiufen1 ; Xu, Jinghua2 
  Author affiliation:1  College of Mechanical Engineering, Inner Mongolia University of Technology, Huhhot 010051, China
                  2  Department of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
  Corresponding author:Hu, Z. (huzy@imut.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:216-220
  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 realize the shape from shading (SFS) under unknown light source parameters of single grayscale image, an efficient SFS method was proposed based on support vector regression(SVR) and particle swarm optimization(PSO) algorithm. Based on the SVR theory, a nonlinear mapping model was constructed between the grayscale image and its 3-D surface by researching into the SFS problem. The light source of the tested actual image should be estimated to generate the training samples corresponding to the light direction. It was important to select the proper SVR parameters for improvement on 3-D reconstruction precision, and the PSO algorithm was introduced. Finally, the case study had verified the feasibility and effectiveness of the proposed SFS method.
  Number of references:17
  Main heading:Three dimensional
  Controlled terms:Algorithms  -  Light sources  -  Parameter estimation  -  Particle swarm optimization (PSO)  -  Regression analysis
  Uncontrolled terms:3D reconstruction  -  Gray-scale images  -  Light direction  -  Nonlinear mappings  -  Particle swarm optimization algorithm  -  PSO algorithms  -  Shape from shading  -  Source parameters  -  Support vector regression  -  Support vector regression (SVR)   -  Training sample
  Classification code:723 Computer Software, Data Handling and Applications  -  723.5 Computer Applications  -  731.1 Control Systems  -  744 Lasers  -  921 Mathematics  -  922.2 Mathematical Statistics
  DOI:10.6041/j.issn.1000-1298.2012.02.041
  Database:Compendex

7. Accession number:20121114853348
  Title:Design of remote control monorail transporter for mountainous orchard
  Authors:Zhang, Junfeng1 ; Li, Jingya1 ; Zhang, Yanlin1 ; Li, Shanjun1 ; Meng, Liang1 
  Author affiliation:1  College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
  Corresponding author:Zhang, Y. (zhangyl@mail.hzau.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:90-95
  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 overcome the difficulties of mountainous orchard transport, a remote control monorail transporter of mountainous orchards was designed. Chain wheel and chain mechanism was used flexibly to drive the machine. The single-track was paved according to the terrain, which met the need of transport in complex terrain. A special structure was installed on the machine to prevent it falling aside and tripping off the track. Using the artificial driving monorail transporter as the research object, the monorail transporter remote control driving system was designed and come out. The experimental results showed that with the load of 300 kg the monorail transporter could climb up the slope no more than 38° and with the load of 1000 kg climbing down ability. The turning radius was no less than 4 m. The remote control distance was as far as 300 m, and the system was reliable and suitable for mountainous orchard operations completely.
  Number of references:26
  Main heading:Orchards
  Controlled terms:Design  -  Mechanisms  -  Remote control
  Uncontrolled terms:Chain-mechanism  -  Complex terrains  -  Driving systems  -  Research object  -  Special structure  -  Turning radius
  Classification code:408 Structural Design  -  601.3 Mechanisms  -  731.1 Control Systems  -  821.3 Agricultural Methods
  DOI:10.6041/j.issn.1000-1298.2012.02.019
  Database:Compendex

8. Accession number:20121114853360
  Title:Relationship between soil nutrient and wheat yield based on PLS
  Authors:Chen, Yunping1 ; Ma, Wei2 ; Wang, Xiu2 ; Zhao, Chunjiang2 
  Author affiliation:1  School of Automation, University of Electronic Science and Technology of China, Chengdu 611731, China
                 2  National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
  Corresponding author:Chen, Y. (chenyp@uestc.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:159-164
  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 objective of this study was to explore the relationship between wheat yield and soil properties. The spatial relationship of organic matter, total nitrogen, available phosphorous, potassium, iron and other 4 kinds of effective nutrients and 2001-2006 wheat yields were studied. The results showed that there were interactions among soil nutrients, maybe multicollinearity, so it was impossible to analyze the relationship of soil nutrients and wheat yield based on simple correlation. Based on partial least squares (PLS), the first two principal components could explain about 30% of the variance of the dependent variable, accounting for all the principal components could explain part of the 96%. For this test field, among nitrogen, phosphorus and potassium, phosphorus was the most important factor to determine the yield. Among trace elements, Zn exerted the greatest impact on wheat yield. In conclusion, the model constructed by PLS could not only make a reasonable explanation for wheat yield and soil nutrients, but also instruct be useful for variable rate fertilization.
  Number of references:19
  Main heading:Nutrients
  Controlled terms:Geologic models  -  Phosphorus  -  Potassium  -  Principal component analysis  -  Regression analysis  -  Soils
  Uncontrolled terms:Partial least square (PLS)  -  Precision Agriculture  -  Soil nutrient  -   Wheat  -  Yield
  Classification code:481.1 Geology  -  483.1 Soils and Soil Mechanics  -  549.1 Alkali Metals  -  804 Chemical Products Generally  -  821.2 Agricultural Chemicals  -  922.2 Mathematical Statistics
  DOI:10.6041/j.issn.1000-1298.2012.02.031
  Database:Compendex

9. Accession number:20121114853359
  Title:Mathematical modeling of hot air drying of thin layer litchi flesh
  Authors:Guan, Zhiqiang1 ; Wang, Xiuzhi2 ; Li, Min2 ; Jiang, Xiaoqiang2 ; Xie, Jing3 
  Author affiliation:1  College of Chemistry and Life Sciences, Guangdong University of Petrochemical Technology, Maoming 525000, China
                 2  Engineering College, Guangdong Ocean University, Zhanjiang 524000, China
                 3  College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
  Corresponding author:Guan, Z. (mmcgzq@163.com) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:151-158 191
  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 influences of drying temperature and hot air speed on the moisture ratio MR and the drying velocity U of litchi were studied by self-building heat pump drying device. The results showed that drying process of litchi occurred in the falling rate period, and the moisture transfer was controlled by internal diffusion. Nine different dynamic models were fitted nonlinearly by using the drying test data of litchi in the heat pump device. The results of comparing the values of the correlation coefficient R2, the reduced chi-square χ2 and the root mean square error eRMSE and the verification testing showed the Page model was the best suitable to descript the relationship of litchi moisture and drying time by hot air drying. The effective moisture diffusion coefficient Deff and the activation energy Ea were also obtained by experiments under different conditions, the values of Deff would increase with the addition of drying temperature and hot air speed, the average value of Ea was 29.939 kJ/mol.
  Number of references:25
  Main heading:Drying
  Controlled terms:Activation energy  -  Food technology  -  Heat pump systems  -  Mean square error  -  Moisture control
  Uncontrolled terms:Activation energy E  -  Average values  -  Correlation coefficient  -  Drying characteristics  -  Drying process  -  Drying temperature  -  Drying tests  -  Drying time  -  Drying velocities  -  Falling-rate period   -  Heat pump drying  -  Heat pumps  -  Hot air  -  Hot air drying  -  Internal diffusion  -  Litchi flesh  -  Mathematical modeling  -  Moisture diffusion coefficient  -  Moisture ratios  -  Moisture transfer   -  Page models  -  Root mean square errors  -  Thin layer drying  -  Thin layers  -  Verification testing
  Classification code:641.2 Heat Transfer  -  642.1 Process Heating  -  731.1 Control Systems  -  801.4 Physical Chemistry  -  822 Food Technology  -  944.2 Moisture Measurements
  DOI:10.6041/j.issn.1000-1298.2012.02.030
  Database:Compendex

10. Accession number:20121114853339
  Title:Centrifugal metering device for rapeseed
  Authors:Liao, Qingxi1 ; Zhang, Ning1 ; Zhang, Pengling1 ; Yang, Bo1 
  Author affiliation:1  College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
  Corresponding author:Liao, Q. (liaoqx@mail.hzau.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:48-51 95
  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 centrifugal metering device was designed for rapeseed. Working principle of the centrifugal metering device was analyzed, and its main structural and performance parameters were investigated. The relationship among rotation speed with the delivery capacity, coefficient of variation, stability of total displacement and damage rate was concluded through the captive test of seeding device. The experimental results showed that the rotating speed was 150 r/min, the diameter of discharge holes was 3.2 mm, the tilt angle of discharge holes was 15°, the delivery coefficient of variation was 2.38% and performance test of the device on the rack demonstrated that seeding uniformity coefficient of variation was 18.2%.
  Number of references:16
  Main heading:Equipment
  Controlled terms:Centrifugation  -  Oilseeds
  Uncontrolled terms:Captive tests  -  Centrifugal  -  Coefficient of variation  -  Damage rate  -  Delivery capacity  -  Metering devices  -  Performance parameters  -  Performance tests  -  Rapeseed  -  Rotating speed   -  Rotation speed  -  Tilt angle  -  Working principles
  Classification code:802.3 Chemical Operations  -  821.4 Agricultural Products  -  901 Engineering Profession
  DOI:10.6041/j.issn.1000-1298.2012.02.010
  Database:Compendex

11. Accession number:20121114853332
  Title:Control strategy for regenerative braking of tracked vehicle based on efficiency optimization
  Authors:Teng, Fei1 ; Lü, Jian'gang1 ; Li, Yanlu1 ; Guo, Shaoyan1 ; Song, Bin1 
  Author affiliation:1  Department of Artillery Engineering, Ordnance Engineering College, Shijiazhuang 050003, China
  Corresponding author:Teng, F. (tengfei1005@sina.com) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:11-15
  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 the hydrostatic and hydraulic auxiliary braking system of tracked vehicle, the hydraulic pump/motor efficiency model according to hydraulic pump/motor performance analysis was set up. The optimal working line in which the hydraulic pump/motor worked at the highest efficiency level was obtained. An energy regenerative braking control strategy was proposed which could lead to the optimal matching of hydraulic coupler, hydraulic pump/motor. The simulation and test results showed that the hydraulic pump/motor could achieve efficient operation, and the energy regeneration efficiency of braking was improved obviously with the regenerative braking control strategy under the safe braking conditions.
  Number of references:11
  Main heading:Optimization
  Controlled terms:Brakes  -  Hydraulic machinery  -  Regenerative braking  -  Tracked vehicles
  Uncontrolled terms:Braking conditions  -  Braking system  -  Control strategies  -  Control strategy  -  Efficiency levels  -  Efficiency models  -  Efficiency optimization  -  Energy regeneration  -  Hydraulic coupler  -  Hydraulic pump   -  Optimal matching  -  Performance analysis  -  Working line
  Classification code:602 Mechanical Drives and Transmissions  -  632.2 Hydraulic Equipment and Machinery  -  663 Buses, Tractors and Trucks  -  921.5 Optimization Techniques
  DOI:10.6041/j.issn.1000-1298.2012.02.003
  Database:Compendex

12. Accession number:20121114853358
  Title:Ultrafiltration and ionic exchange purification of ACE inhibitory peptides from hydrolysate of Porphyra yezoensis protein
  Authors:He, Ronghai1 ; Ma, Haile1 ; Yu, Xiaojie2 
  Author affiliation:1  School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
                  2  School of Agriculture and Food Science, Zhejiang A and F University, Lin'an 311300, China
  Corresponding author:Ma, H. (mhl@ujs.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:146-150 204
  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:Angiotensin I-converting enzyme (ACE) inhibitory peptides from digested Porphyra yezoensis protein were purified with ultrafiltration and ionic exchange. The hydrolysate of Porphyra yezoensis protein was ultrafiltered by 10 kDa and 3 kDa membrane in sequence. It was found that the IC50 value of Porphyra yezoensis peptides decreased from original 0.844 mg/mL to 0.523 mg/mL. And Nakai D61 cation resin was selected according to its largest absorption in the ionic exchange static absorption test. The results showed that the second elution peak had the highest protein recovery, ACE inhibitory activity recovery and the lowest IC50 value, which were 45.2%, 61.5% and 0.127 mg/mL, respectively. The sample's IC50 value decreased by 75.7% after the ionic exchange purification.
  Number of references:15
  Main heading:Ion exchange
  Controlled terms:Peptides  -  Purification  -  Ultrafiltration
  Uncontrolled terms:Absorption tests  -  ACE-inhibitory  -  ACE-inhibitory activity  -  Angiotensin I-converting enzyme  -  Cation resins  -  Inhibitory peptides  -  Ionic exchange  -  Porphyra yezoensis  -  Protein recovery
  Classification code:461.9 Biology  -  802.2 Chemical Reactions  -  802.3 Chemical Operations
  DOI:10.6041/j.issn.1000-1298.2012.02.029
  Database:Compendex

13. Accession number:20121114853331
  Title:Braking energy recovery system for electric vehicles
  Authors:Wang, Meng1 ; Sun, Zechang1 ; Zhuo, Guirong1 ; Cheng, Peng2 
  Author affiliation:1  School of Automotive Studies, Tongji University, Shanghai 201804, China
                 2  Chassis Department, SAIC Motor Passenger Vehicle Corporation, Shanghai 201804, China
  Corresponding author:Sun, Z. (sunzechang@fcv-sh.com) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:6-10
  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 further improve the energy efficiency of electric vehicles, thus to improve the driving range economy, a braking energy recovery system for electric vehicles with simple structure, high reliability and fail-safe function was developed. Meanwhile, considering performance parameters of motor and battery, the efficient regenerative braking control strategy with strong portability was developed. Based on the proposed system and control strategy, hardware-in-loop tests were accomplished. Test results showed that friction braking force and regenerative braking force could be well integrated and braking energy recovery efficiency was high. Finally, experimental data of a FCV on CYC Japan-1015 proved the performance and feasibility of the proposed system. Braking energy recovery efficiency reached to 59.15%.
  Number of references:6
  Main heading:Brakes
  Controlled terms:Electric vehicles  -  Energy efficiency  -  Regenerative braking
  Uncontrolled terms:Braking energy  -  Braking force  -  Control strategies  -  Driving range  -  Experimental data  -  Fail-safe functions  -  Hardware-in-loop  -  High reliability  -  Performance parameters  -  Simple structures
  Classification code:432 Highway Transportation  -  525.2 Energy Conservation  -  602 Mechanical Drives and Transmissions
  DOI:10.6041/j.issn.1000-1298.2012.02.002
  Database:Compendex

14. Accession number:20121114853334
  Title:3-D integrated optimization of blade numbers for vehicular hydraulic retarder
  Authors:Yan, Qingdong1 ; Zou, Bo1, 2 ; Tang, Zhenghua1, 3 ; Wei, Wei1 
  Author affiliation:1  School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
                  2  Tiema Industries Corporation, Chongqing 400050, China
                  3  Department of Vehicle Using, Academy of Armored Forces, Bengbu 233050, China
  Corresponding author:Yan, Q. (yanqd@bit.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:21-25
  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:To optimize the parameters of blade numbers of vehicular hydraulic retarder, a 3-D integrated optimization platform was established. The brake torque of hydraulic retarder was calculated with CFD solver and DOE technique of design variable. With DOE results, the RSM model was built to get the optimum parameters. The relationship of internal flow field and brake performance with the varying blade numbers was analyzed and concluded. Comparison of experimental data and simulation results before and after the optimization showed that the brake performance of hydraulic retarder with the optimum parameters was improved observably, and the 3-D integrated optimization platform was accurate and reliable.
  Number of references:10
  Main heading:Optimization
  Controlled terms:Automotive engineering  -  Brakes  -  Integration  -  Three dimensional  -  Well pumps
  Uncontrolled terms:Blade numbers  -  Brake performance  -  Brake torque  -  CFD solver  -  Design variables  -  Experimental data  -  Hydraulic retarder  -  Integrated optimization  -  Internal flow field  -  Optimum parameters   -  Vehicle engineering
  Classification code:446.1 Water Supply Systems  -  602 Mechanical Drives and Transmissions  -  664 Automotive Engineering, General  -  902.1 Engineering Graphics  -  921.2 Calculus  -  921.5 Optimization Techniques
  DOI:10.6041/j.issn.1000-1298.2012.02.005
  Database:Compendex

15. Accession number:20121114853357
  Title:Early fertility detection of hatching duck egg based on fusion between computer vision and impact excitation
  Authors:Zhang, Wei1 ; Tu, Kang1 ; Liu, Peng1 ; Pan, Leiqing1 ; Zhan, Ge1 
  Author affiliation:1  College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
  Corresponding author:Tu, K. (kangtu@njau.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:140-145
  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 increase the detecting accuracy and stability of the fertility of hatching eggs during early hatching period, information of vision and acoustic sensors were fused in the sensor level on the fifth day of incubation, and two different artificial neural networks were chosen to establish models for detecting fertility of hatching eggs. Results showed that the sensor fusion model by LVQ artificial neural network obtained a higher discriminating accuracy and stability than the sensor fusion model of BP artificial neural network. The discriminating accuracy of hatching eggs during the early hatching period was up to 92% and 88% by computer vision technique and impact excitation technique, respectively. However, the discriminating accuracy reached 98% by sensor fusion model, which implied that the sensor fusion was feasible for detecting fertility of hatching eggs during early hatching period.
  Number of references:18
  Main heading:Computer vision
  Controlled terms:Neural networks  -  Sensors
  Uncontrolled terms:Acoustic Sensors  -  BP artificial neural network  -  Computer vision techniques  -  Duck egg  -  Impact excitation  -  Sensor fusion  -  Sensor information fusion  -  Sensor level
  Classification code:723.4 Artificial Intelligence  -  723.5 Computer Applications  -  801 Chemistry
  DOI:10.6041/j.issn.1000-1298.2012.02.028
  Database:Compendex

16. Accession number:20121114853347
  Title:Damage of sugarcane leaf sheath under action of elastic leaf-stripping elements based on high-speed photography
  Authors:Mou, Xiangwei1 ; Ou, Yinggang1 ; Wu, Hao1 ; Liu, Qingting1 ; Song, Jianming1 ; Huang, Shixing1 
  Author affiliation:1  Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
  Corresponding author:Ou, Y. (ouying@scau.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:85-89
  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 study the damage mechanism of sugarcane leaf sheath under the action of elastic leaf-stripping elements in the leaf-stripping process of whole stalk sugarcane harvester, the sugarcane leaf-stripping machine was designed, and the damage process of the leaf sheath was photographed by high-speed photography. By analyzing the pictures, the result showed that three damage forms, the abscission of leaf sheath from stalk, leaf sheath torn and the separation leaf sheath from stalk were found. The damage mechanism under the action of elastic leaf-stripping elements was analyzed based on the construction of simplified mechanical model and mechanical properties of sugarcane leaf sheath. The elastic force applied on the leaf sheath by elastic leaf-stripping elements was the main force to make the leaf sheath damage. The different damage forms had relations with growth character and mechanical property of leaf sheath. When the moisture content of leaf sheath was less than 20%, the abscission of leaf sheath from stalk was the main damage form. And the moisture content ranged from 20% to 50%, leaf sheath torn happened. Also the moisture content was greater than 50%, the separation leaf sheath from stalk appeared.
  Number of references:13
  Main heading:High speed cameras
  Controlled terms:Failure (mechanical)  -  High speed photography  -  Mechanical properties  -  Moisture determination  -  Separation  -  Sugar cane
  Uncontrolled terms:Damage  -  Damage mechanism  -  Damage process  -  Different damages  -  Elastic force  -  Elastic leaf-stripping element  -  Growth character  -  Leaf sheath  -  Mechanical model  -  Sugarcane harvesters
  Classification code:951 Materials Science  -  944.2 Moisture Measurements  -  821.4 Agricultural Products  -  802.3 Chemical Operations  -  742.2 Photographic Equipment  -  742.1 Photography  -  421 Strength of Building Materials; Mechanical Properties
  DOI:10.6041/j.issn.1000-1298.2012.02.018
  Database:Compendex

17. Accession number:20121114853351
  Title:Microwave-assisted pyrolysis of Swida wilsoniana fruit oil soap for preparing renewable hydrocarbon fuel via selective decarboxylation
  Authors:Liu, Yuhuan1 ; Wang, Yunpu1 ; Wang, Yingkuan2 ; Wan, Yiqin1 ; Zhang, Jinsheng1 ; Ruan, Rongsheng1  
  Author affiliation:1  Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
                  2  Chinese Academy of Agricultural Engineering, Beijing 100125, China
  Corresponding author:Ruan, R. (ruanx001@umn.edu) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:106-111 105
  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 prepare hydrocarbon fuel, sodium soap made from Swida wilsoniana fruit oil was chosen as a model compound with significant molecular polarity for preparing hydrocarbon fuel by microwave-assisted pyrolysis. The result showed that the hydrocarbon content were usually above 70%. In addition, its density and dynamic viscosity were 0.850-0.875 g/cm3 and 2.09-2.85 mm2/s, respectively, similar with petroleum diesel. The highest peak in the GC-MS profile of liquid product was fifteen carbon alkenes, decarboxylation was proved to be main reaction in microwave-assisted pyrolysis.
  Number of references:19
  Main heading:Organic compounds
  Controlled terms:Carboxylation  -  Fruits  -  Fuels  -  Olefins  -  Sodium
  Uncontrolled terms:Bio oil  -  Decarboxylation  -  Dynamic viscosities  -  Hydrocarbon content  -  Hydrocarbon fuel  -  Hydrocarbon fuels  -  Liquid products  -  Microwave-assisted  -  Model compound  -  Petroleum diesel   -  Sodium soaps
  Classification code:821.4 Agricultural Products  -  804.1 Organic Compounds  -  802.2 Chemical Reactions  -  549.1 Alkali Metals  -  524 Solid Fuels  -  523 Liquid Fuels  -  522 Gas Fuels
  DOI:10.6041/j.issn.1000-1298.2012.02.022
  Database:Compendex

18. Accession number:20121114853365
  Title:Design and implementation of network video surveillance system for laying hens farm based on ARM
  Authors:Wang, Ling1 ; Wang, Chaofeng1 ; Zheng, Kui1 
  Author affiliation:1  College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
  Corresponding author:Wang, L. (Lingw@njau.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:186-191
  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 network video surveillance system for laying hens farm was designed based on embedded technology. Linux operation system environment was built. Video and image were processed in parallel on embedded terminal: videos captured by V4L were coded based on H. 264, transmitted to surveillance platform using RTP/RTCP and UDP, decoded and displayed on surveillance platform. An image from frames splice according to their contents was binarized by Ohta, converted into a distance image, binarized again with a threshold of egg radius to count eggs, and the total number was overprinted on video by OSD. Field experiment showed that videos were displayed real-timely and clearly and eggs were counted with an average accuracy of 96.07% on surveillance platform.
  Number of references:11
  Main heading:Security systems
  Controlled terms:Computer operating systems  -  Farms  -  Monitoring
  Uncontrolled terms:ARM  -  Distance image  -  Eggs count  -  Embedded technology  -  Field experiment  -  Linux operation system  -  Network video  -  Network video surveillance  -  RTP/RTCP  -  Surveillance platforms
  Classification code:943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  914.1 Accidents and Accident Prevention  -  723 Computer Software, Data Handling and Applications  -  722 Computer Systems and Equipment  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control
  DOI:10.6041/j.issn.1000-1298.2012.02.036
  Database:Compendex

19. Accession number:20121114853361
  Title:Analysis and application of spectral characteristic of winter wheat in early growth periods
  Authors:Li, Shuqiang1, 2 ; Li, Minzan1 ; Li, Xiuhua1 ; Zhao, Ruijiao1 
  Author affiliation:1  Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing 100083, China
                 2  College of Vehicle and Motive Power Engineering, Henan University of Science and Technology, Luoyang 471003, 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:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:165-169
  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 canopy spectral reflectance and chlorophyll content were measured and analyzed by different testing methods in turning green and jointing stage, which were most important periods for winter wheat growth. The characteristics of correlation indicated that the test results of the canopy spectral were affected by field without covering at turning green stage. The red edge inflection point as one of the most important spectral parameters was analyzed at winter wheat turning green and shooting stages based on the first derivative of reflectance spectra. The results showed that the correlation of red edge and chlorophyll was better for forecasting the chlorophyll content in the turning green stage which was lower surface ground coverage. The linear prediction coding model and the binomial model were found for the chlorophyll content prediction.
  Number of references:8
  Main heading:Crops
  Controlled terms:Chlorophyll  -  Reflection  -  Remote sensing
  Uncontrolled terms:Binomial models  -  Canopy  -  Canopy spectral reflectance  -  Chlorophyll contents  -  Early growth  -  First derivative  -  Ground based  -  Linear prediction coding  -  Red edge  -  Red edge inflection points   -  Reflectance spectrum  -  Spectral characteristics  -  Spectral parameters  -  Spectral reflectances  -  Surface ground  -  Testing method  -  Winter wheat
  Classification code:711 Electromagnetic Waves  -  731.1 Control Systems  -  804.1 Organic Compounds  -  821.4 Agricultural Products
  DOI:10.6041/j.issn.1000-1298.2012.02.032
  Database:Compendex

20. Accession number:20121114853344
  Title:Mechanical model with varying stiffness and critical grain load of wheat stalk
  Authors:Li, Hongbo1 ; Guo, Yuming1 
  Author affiliation:1  College of Engineering, Shanxi Agricultural University, Taigu 030801, China
  Corresponding author:Li, H. (lhb625@126.com) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:70-74
  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 study of lodging resistance of wheat stalk, a culm model with varying stiffness was established from wheat stalk by the variation of structural parameters, such as the Young's modulus, inertia moment, the length of the internode, load and so on, in different internodes along the stalk height, and its critical load was analyzed by using initial parameter method. With tests performed on the wheat variety of Jinnong 190 in the milk stage, the structural parameters were obtained in different internodes. Based on the proposed model, the critical load was estimated and the safety factor was concluded as 1.97, which showed Jinnong 190 had a better ability in lodging resistance. The local bucking analyses showed that the Brazier buckling was hard to occur in the internodes of Jinnong 190 with the effects of its self weight and the tip weight.
  Number of references:20
  Main heading:Stiffness
  Controlled terms:Safety factor
  Uncontrolled terms:Critical load  -  Inertia moment  -  Initial parameter  -  Local bucking  -  Lodging resistance  -  Mechanical model  -  Self-weight  -  Stalk  -  Stalk height  -  Structural parameter   -  Varying stiffness  -  Wheat  -  Young's Modulus
  Classification code:421 Strength of Building Materials; Mechanical Properties  -  422 Strength of Building Materials; Test Equipment and Methods  -  662.1 Automobiles  -  951 Materials Science
  DOI:10.6041/j.issn.1000-1298.2012.02.015
  Database:Compendex

21. Accession number:20121114853366
  Title:Spurious currents during numerical simulation of gas-liquid two-phase flow
  Authors:Ning, Zhi1 ; Wang, Chunhai1, 2 ; Song, Yunchao1 
  Author affiliation:1  School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China
                 2  School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China
  Corresponding author:Ning, Z. (zhining@bjtu.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:192-197
  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 spurious currents were studied based on the stationary droplet problem. The conception of spurious currents and their characteristics were described. The effect of surface tension and liquid viscosity on spurious currents was analyzed. It was found that there was a certain relationship between the average spurious velocity and the computing time. This conclusion could provide an idea to weaken or eliminate the spurious currents. The cause of the spurious currents was analyzed and found that the modification of the phase interface simulation method could weaken spurious currents obviously, and this conclusion was validated by the comparison of the simulation results of CLSVOF method and VOF method.
  Number of references:18
  Main heading:Computer simulation
  Controlled terms:Liquids  -  Phase interfaces  -  Surface tension  -  Two phase flow
  Uncontrolled terms:Computing time  -  Gas-liquid two-phase flow  -  Liquid viscosity  -  Simulation methods  -  Spurious currents  -  Spurious velocity  -  VOF method
  Classification code:631.1 Fluid Flow, General  -  723.5 Computer Applications  -  931.2 Physical Properties of Gases, Liquids and Solids
  DOI:10.6041/j.issn.1000-1298.2012.02.037
  Database:Compendex

22. Accession number:20121114853372
  Title:Kipp oscillator gas piezoelectric pump
  Authors:Zheng, Wei1, 2 ; Dong, Jingshi1 ; Yu, Hongyang3 ; Yang, Zhigang1 ; Wu, Boda1 ; Liu, Hao1 
  Author affiliation:1  Institute of Mechanical Science and Engineering, Jilin University, Changchun 130025, China
                  2  Foundational Department, Aviation University of Air Force, Changchun 130022, China
                  3  Department of Aviation Mechanical Engineer, Aviation University of Air Force, Changchun 130022, China
  Corresponding author:Dong, J. (dongjs@jlu.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:226-229
  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 kipp oscillator gas piezoelectric micro-pump was presented. The dynamic modeling and simulation of the check valve which was the main component of pump were investigated. Based the analysis results, a proto type of gas micro-pump was fabricated and measured. The pump was driven by piezoelectric bimorph which had a hole in the middle, and a check valve was adhered to the hole to cut off fluid. The inlet and outlet was located in the two sides of the piezoelectric vibrator, and the on/off action of the check valve corresponding to the variation of the pump chamber was produced by the actuation vibration energy of piezoelectric vibrator. Compared with the traditional piezoelectric pump which inlet and outlet was located in one side and the check valve was drived by differential pressure on the two sides, it had lower fluid resistance and preferable unidirectional cut off characteristic. So the gas pumping ability and the response frequency of check valve were enhanced. The measured output flow rate of present design by experiment reached to 720 mL/min when driving voltage and frequency was 40 V and 1000 Hz.
  Number of references:11
  Main heading:Pumps
  Controlled terms:Computer simulation  -  Frequency response  -  Gases  -  Piezoelectric devices  -  Piezoelectricity  -  Vibrators
  Uncontrolled terms:Analysis results  -  Check valves  -  Cut-off characteristic  -  Differential pressures  -  Driving voltages  -  Dynamic modeling and simulation  -  Fluid power  -  Fluid resistance  -  Gas pumping  -  Micro pump   -  Output flow rate  -  Piezoelectric bimorphs  -  Piezoelectric micropumps  -  Piezoelectric pump  -  Piezoelectric vibrators  -  Proto type  -  Pump chambers  -  Response frequency  -  Vibration energies
  Classification code:731.1 Control Systems  -  723.5 Computer Applications  -  714 Electronic Components and Tubes  -  931.2 Physical Properties of Gases, Liquids and Solids  -  704 Electric Components and Equipment  -  691.1 Materials Handling Equipment  -  618.2 Pumps  -  701.1 Electricity: Basic Concepts and Phenomena
  DOI:10.6041/j.issn.1000-1298.2012.02.043
  Database:Compendex

23. Accession number:20121114853341
  Title:Ideal spray Boom response extraction with front and rear tires excited by step track
  Authors:Qiu, Baijing1 ; Yang, Ning1 ; Xu, Xichao1 ; Guan, Xianping1 ; Wu, Chundu1 
  Author affiliation:1  Key Lab. of Modern Agricultural Equipment and Technol., Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:Qiu, B. (qbj@ujs.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:55-60
  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 make sure the excitation of a step track can be used for boom sprayer system identification and characteristics estimation, a method was established to extract the front-tires-excited spray boom response form the spray boom response of front and rear tires were excited by step truck. The determination coefficient between measured and predicted model value of spray boom response was 0.9551. The front-tires-excited spray boom response can be used for characteristics analysis of spray boom motion.
  Number of references:23
  Main heading:Tires
  Controlled terms:Agricultural engineering  -  Mechanical engineering
  Uncontrolled terms:Boom prayer  -  Boom sprayer  -  Characteristics analysis  -  Determination coefficients  -  Response  -  Spray booms  -  Step track
  Classification code:608 Mechanical Engineering, General  -  818.5 Rubber Products  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control
  DOI:10.6041/j.issn.1000-1298.2012.02.012
  Database:Compendex

24. Accession number:20121114853335
  Title:General matching method for hydraulic transmission system
  Authors:Tang, Zhenghua1, 2 ; Yan, Qingdong1 ; Liu, Shucheng1 
  Author affiliation:1  School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
                  2  Department of Vehicle Using, Academy of Armored Forces, Bengbu 233050, China
  Corresponding author:Tang, Z. (tanglewish@gmail.com) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  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:To improve the performance of hydraulic transmission system, a study on the matching performance of engine and hydraulic torque converter was conducted. According to the power split-flow form, hydraulic transmission systems were divided into two classical structure modals. With the two structure modals were abstracted according to graph theory, a computer program was developed using Python language, which could finish auto-derivation and auto-solving, and finish the matching calculation of engine and torque converter. Combined with a matching calculation example, a comparison study of the results of the two structure modals under different road conditions was carried out, which showed that the matching performance of engine and hydraulic torque converter in the hydraulic transmission systems with front power split-flow was obviously influenced by external load, and the load effect had to be considered in the study on its cooperating performance.
  Number of references:8
  Main heading:Hydraulic torque converters
  Controlled terms:Electric power transmission  -  Engines  -  Graph theory  -  Transmissions
  Uncontrolled terms:Classical structures  -  Comparison study  -  External loads  -  Load effects  -  Match  -  Matching methods  -  Matching performance  -  PYTHON language  -  Road condition  -  Structure modal
  Classification code:602 Mechanical Drives and Transmissions  -  602.2 Mechanical Transmissions  -  612 Engines  -  706.1.1 Electric Power Transmission  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
  DOI:10.6041/j.issn.1000-1298.2012.02.006
  Database:Compendex

25. Accession number:20121114853346
  Title:Numerical simulation of material motion on vibrating screen of air-and-screen cleaning device based on CFD-DEM
  Authors:Li, Hongchang1 ; Li, Yaoming1 ; Tang, Zhong1 ; Xu, Lizhang1 
  Author affiliation:1  Key Lab. of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, 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:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:79-84
  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 material motion on the screen surface of air-and-screen cleaning device was simulated by using CFD-DEM coupled method, and experimental results and simulation results were compared. Simulation results showed that with the increasing wind speed, vibrating screen processing power would improve in a certain range, while grain losses would increase. With the increasing wind speed, the grain passed through the screen surface and decreased after section 15.It showed that numerical simulation of material motion on vibrating screen of air-and-screen cleaning device based on CFD-DEM was feasible.
  Number of references:15
  Main heading:Air cleaners
  Controlled terms:Cleaning  -  Computational fluid dynamics  -  Computer simulation  -  Vibrating screens  -  Wind effects
  Uncontrolled terms:Cleaning devices  -  Coupled method  -  DEM  -  Grain loss  -  Processing power  -  Wind speed
  Classification code:443.1 Atmospheric Properties  -  605.1 Small Tools, Powered  -  651.2 Wind Tunnels  -  723.5 Computer Applications  -  802.3 Chemical Operations
  DOI:10.6041/j.issn.1000-1298.2012.02.017
  Database:Compendex

26. Accession number:20121114853343
  Title:Strength evaluation of root lodging resistance in maize stalk
  Authors:Li, Wei1 ; Wu, Kebin1 ; Chen, Yanjun1 ; Zhang, Junxiong1 ; Li, Jiansheng2 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
                 2  National Maize Improvement Center of China, China Agricultural University, Beijing 100094, China
  Corresponding author:Li, W. (liww@cau.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:66-69
  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 evaluating strength of root lodging resistance in maize stalk was developed. It constructed a mechanical model of cantilever beam to describe maize stalk. The maximum vertical root-pulling resistance was used as a measurand for evaluating the strength of root lodging resistance in maize stalk. A measuring instrument was designed which consisted of a screw mechanism, an activities tripod platform, a gripper and measurement parts. Force which was transferred to the screw mechanism with the help of a hand wheel was only 1/97 of the maximum vertical root pulling resistance. The gripper with two different devices could clamp most of the maize stalks with different diameters. Field experiments showed a significant negative correlation existed between maximum vertical root-pulling resistance and root lodging.
  Number of references:10
  Main heading:Grippers
  Controlled terms:Screws
  Uncontrolled terms:Field experiment  -  Maize stalk  -  Measurand  -  Measuring instruments  -  Mechanical model  -  Negative correlation  -  Pulling resistance  -  Root lodging  -  Strength evaluation
  Classification code:605 Small Tools and Hardware  -  731.5 Robotics
  DOI:10.6041/j.issn.1000-1298.2012.02.014
  Database:Compendex

27. Accession number:20121114853345
  Title:Adhesion property between rape mixture and bionic screen matrix
  Authors:Li, Yaoming1 ; Ma, Zheng1 ; Xu, Lizhang1 
  Author affiliation:1  Key Lab. of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, 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:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:75-78 84
  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:Rape adhesion property test system was constructed to test the adhesion property of rape mixture to bionic screen matrix, which was measured by adhesion rate μ and adhesion reduction rate τ which were correlative with residual adhesion area. Super-green feature extraction method of image technology was used to calculate the residual adhesion area. The results showed that the adhesion reduction rates τ of rape mixture to bionic screen matrix were more than 30% and even reached to 90%, which means an obvious adhesion reduction function of the bionic screen matrix. The results also showed that bionic convex surface could lower adhesion better than bionic concave surface with rape mixture. The adhesion degree of rape mixture on common screen was depend on the components of rape mixture while the adhesion degree of bionic nonsmooth screen was stable, which could adapt to different environments in the field and keep the lower adhesion function.
  Number of references:11
  Main heading:Adhesion
  Controlled terms:Bionics  -  Feature extraction  -  Harvesters  -  Image processing  -  Mixtures
  Uncontrolled terms:Adhesion properties  -  Adhesion rate  -  Combine harvester  -  Concave surface  -  Convex surfaces  -  Feature extraction methods  -  Non-smooth  -  Rape  -  Reduction function  -  Reduction rate
  Classification code:951 Materials Science  -  821.1 Agricultural Machinery and Equipment  -  802.3 Chemical Operations  -  801 Chemistry  -  741 Light, Optics and Optical Devices  -  731.1 Control Systems  -  716 Telecommunication; Radar, Radio and Television
  DOI:10.6041/j.issn.1000-1298.2012.02.016
  Database:Compendex

28. Accession number:20121114853352
  Title:Volatilization characteristics models of corn powder with flash pyrolysis
  Authors:Wang, Nana1 ; Yi, Weiming1 ; Bai, Xueyuan1 ; Li, Yongjun1 ; Liu, Zhuwei1 
  Author affiliation:1  School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, China
  Corresponding author:Yi, W. (yiweiming@sdut.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:112-115
  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 Arrhenius form first order reaction kinetic model was introduced to determine volatilization characteristics of corn powders. The factors which affect the kinetic parameter of the Arrhenius model including: volatile percent, final volatile percent and residential time. A laminar entrained flow reactor (LEFR) was designed and constructed to obtain the volatile percent and final volatile percent of corn powders. Using the PIV cold test conclusion, accurate residential time of corn powders in LEFR was obtained by optimizing the calculation method. Based on experimental results, the values of frequency factor and activation energy of corn powders pyrolysis were determined. The results showed that the test values fit well with the predict values, which verified practicability of the model.
  Number of references:12
  Main heading:Powders
  Controlled terms:Activation energy  -  Biomass
  Uncontrolled terms:Arrhenius form  -  Arrhenius models  -  Bio-mass energy  -  Calculation methods  -  Cold tests  -  Corn powder  -  First order reactions  -  Flash pyrolysis  -  Frequency factors  -  Laminar entrained flow reactor   -  Pyrolysis model  -  Residential time
  Classification code:525.1 Energy Resources and Renewable Energy Issues  -  536 Powder Metallurgy  -  801.4 Physical Chemistry  -  804 Chemical Products Generally
  DOI:10.6041/j.issn.1000-1298.2012.02.023
  Database:Compendex

29. Accession number:20121114853371
  Title:3-D reconstruction method based on color pseudo-random coding and corner testing technology
  Authors:Xu, Zhenying1 ; Cao, Dandan1 ; Wang, Yun1 
  Author affiliation:1  School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:Xu, Z. (zhyxu77@163.com) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:221-225
  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 3-D reconstruction method was introduced to apply color pseudo-random coded image from a projector. A color projecting template was designed based on the pseudo-random principle. Then, a modified color corner extraction method based on Harris corner testing was introduced, which applying quadric fitting to realize sub-pixel location of the corners. Therefore, the left and right images were decoded to pseudo-random array on the basis of the corner testing results. According to the window property, the matching between the left and right images was realized and the reconstruction of the scene could be obtained combined with the vision calibration. The surface of a cylinder was reconstructed. The result proved that the method introduced here had the advantage of high matching speed and high matching accuracy.
  Number of references:9
  Main heading:Three dimensional
  Controlled terms:Color  -  Image coding  -  Image matching  -  Testing
  Uncontrolled terms:3D reconstruction  -  Corner matching  -  Extraction method  -  Harris corners  -  Matching speed  -  Pseudo random  -  Sub pixels  -  Testing results  -  Testing technology
  Classification code:423.2 Non Mechanical Properties of Building Materials: Test Methods  -  741 Light, Optics and Optical Devices  -  741.1 Light/Optics  -  902.1 Engineering Graphics
  DOI:10.6041/j.issn.1000-1298.2012.02.042
  Database:Compendex

30. Accession number:20121114853353
  Title:Combustion kinetics characteristic analysis on vinegar residue based on non-isothermal thermogravimetric analysis
  Authors:Shi, Aiping1 ; Zhang, Yinli1 ; Ye, Lihua2 ; Wang, Yibing1 ; Xu, Rongjin1 ; Gong, Jianhua3 
  Author affiliation:1  School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
                2  School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
                 3  Wolong Holding Group, Shangyu 312300, China
  Corresponding author:Shi, A. (shiaiping1968@126.com) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:116-120
  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 combustion behavior of vinegar residue was studied under the different heating rate, particle size, and oxygen volume fraction by non-isothermal thermogravimetric analysis. The influence of different conditions on burning performance parameters of vinegar residue was investigated. A combustion kinetic equation of vinegar residue was built, and the combustion kinetic parameters were obtained. The results showed that the increase of heating rate was helpful to the combustion of vinegar residue. The influence of particle size and oxygen volume fraction was relatively small. And when the value changes to a certain value, the influence was not obvious any more. According to the calculation of Satava-Sestak method, the combustion kinetic parameters, such as activation Es and pre-exponential factor As and mechanism function G(α) of vinegar residue were got. And G(α)=[-ln (1-α)]3. The values of Es and lgAs in the devolatilization and combustion stage and the fixed carbon combustion stage were similar. Es was about 120-130 kJ/mol, and lgAs was about 9-11.
  Number of references:10
  Main heading:Combustion
  Controlled terms:Acetic acid  -  Heating rate  -  Integral equations  -  Isotherms  -  Kinetics  -  Thermogravimetric analysis
  Uncontrolled terms:Combustion behavior  -  Combustion kinetic parameters  -  Combustion kinetics  -  Combustion stage  -  Devolatilization  -  Fixed carbons  -  Nonisothermal  -  Performance parameters  -  Preexponential factor  -  Thermogravimetric analysis (TGA)   -  Vinegar residue
  Classification code:931.2 Physical Properties of Gases, Liquids and Solids  -  931 Classical Physics; Quantum Theory; Relativity  -  921.2 Calculus  -  804.1 Organic Compounds  -  801.4 Physical Chemistry  -  801 Chemistry  -  641.2 Heat Transfer  -  641.1 Thermodynamics  -  521.1 Fuel Combustion
  DOI:10.6041/j.issn.1000-1298.2012.02.024
  Database:Compendex

31. Accession number:20121114853338
  Title:Mechanical-pneumatic combined corn precision seed-metering device
  Authors:Liu, Jia1 ; Cui, Tao1 ; Zhang, Dongxing1 ; Yang, Li1 ; Shi, Song1 
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
  Corresponding author:Zhang, D. (zhangdx@cau.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:43-47
  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 mechanical-pneumatic combined corn precision seed-metering device was designed based on the structure of mechanical inside-filling seed-metering device and the single-seed reserving principle of the pneumatic seed-metering device. The basic structure and the working principle were expounded here. The critical components were designed based on the calculation. It's performance such as working air pressure, seed overlap index, missing index and seed allocation eligible rates was investigated under laboratory. Experiment results indicated that this device had superior eligible rates of the seed individual spacing, low working air pressure and high speed adoptability.
  Number of references:9
  Main heading:Equipment
  Controlled terms:Atmospheric pressure  -  Design  -  Experiments  -  Pneumatic materials handling equipment  -  Pneumatics
  Uncontrolled terms:Air pressures  -  Basic structure  -  Corn  -  Critical component  -  Mechanical-pneumatic combination  -  Seed-metering device  -  Working principles
  Classification code:408 Structural Design  -  443.1 Atmospheric Properties  -  632.3 Pneumatics  -  632.4 Pneumatic Equipment and Machinery  -  901 Engineering Profession  -  901.3 Engineering Research
  DOI:10.6041/j.issn.1000-1298.2012.02.009
  Database:Compendex

32. Accession number:20121114853337
  Title:Effect of wheel compaction on fuel consumption of agricultural machinery in field operation
  Authors:Chen, Hao1 ; Yang, Yali1 ; He, Jin2 ; Wang, Qingjie2 ; Li, Hongwen2  
  Author affiliation:1  Automotive Engineering College, Shanghai University of Engineering Science, Shanghai 201620, China
                 2  College of Engineering, China Agricultural University, Beijing 100083, China
  Corresponding author:Li, H. (lhwen@cau.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:37-42 60
  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 effect of controlled traffic with conservation tillage (CTCT) on fuel consumption in annual two crops region in northern China was analyzed to illustrate its advantage on energy saving, thus further to promote its application. When subsoiling, fuel consumption of CTCT was reduced by 23.7%, in which trafficking fuel consumption was reduced by 23.8% and working fuel consumption was reduced by 36.3%, compared to non-controlled traffic with conservation tillage (NCTCT). While in maize and wheat planting, fuel consumption reduction was reduced by 23.9% and 26.0%, respectively. For the two-year period, compared to NCTCT, CTCT significantly reduced fuel consumption by 28.6% (27.09 L/hm2) in average. Results indicated that CTCT was a useful way to reduce agricultural machine field fuel consumption by separating traffic and crop zone, therefore to reduce working resistance force.
  Number of references:13
  Main heading:Agricultural machinery
  Controlled terms:Crops  -  Fuel consumption  -  Soil mechanics
  Uncontrolled terms:Agricultural machine  -  Conservation tillage  -  Controlled traffic  -  Fuel consumption reduction  -  In-field  -  Northern China  -  Resistance force  -  Soil compaction
  Classification code:483.1 Soils and Soil Mechanics  -  521 Fuel Combustion and Flame Research  -  821.1 Agricultural Machinery and Equipment  -  821.4 Agricultural Products
  DOI:10.6041/j.issn.1000-1298.2012.02.008
  Database:Compendex

33. Accession number:20121114853356
  Title:Rapid detection based on machine vision for Escherichia coli in vegetables
  Authors:Ding, Yun1 ; Yin, Yongguang2 ; Wang, Min3 
  Author affiliation:1  Editorial Department of Journal of Bionic Engineering, Jilin University, Changchun 130022, China
                 2  College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China
                 3  General Surgery Hospital, The Second Hospital of Jilin University, Changchun 130041, China
  Corresponding author:Ding, Y. (dingyun@jlu.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:134-139 145
  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 adapt to the requests of on-site rapid detection technique of Escherichia coli (E. coli) for the safety of agricultural products, a rapid E. coli recognition method based on shape and color feature parameters was proposed. Principal component neural network was used to improve the recognition ability. Principal component analysis was applied to the 14 extracted feature parameters, including Hu's moment invariants, shape factor, denseness and saturation, et al. A three-layer BP neural network model based on the principal components was constructed. Compared with traditional BP neural network, the configuration of the principal component neural network was simpler, the training time was shorter and the recognition accuracy was higher. The recognition accuracy of the principal component neural network can arrived at 91.33%.
  Number of references:14
  Main heading:Principal component analysis
  Controlled terms:Computer vision  -  Escherichia coli  -  Feature extraction  -  Neural networks  -  Vegetables
  Uncontrolled terms:BP neural network model  -  BP neural networks  -  Color features  -  E. coli  -  Escherichia coli (E. coli)  -  Feature parameters  -  Moment invariant  -  On-machines  -  Principal component analysis (PCA)  -  Principal component neural networks   -  Principal Components  -  Rapid detection  -  Recognition abilities  -  Recognition accuracy  -  Recognition methods  -  Shape factor  -  Three-layer  -  Training time
  Classification code:461.9 Biology  -  716 Telecommunication; Radar, Radio and Television  -  723.4 Artificial Intelligence  -  723.5 Computer Applications  -  821.4 Agricultural Products  -  922.2 Mathematical Statistics
  DOI:10.6041/j.issn.1000-1298.2012.02.027
  Database:Compendex

34. Accession number:20121114853355
  Title:Comparison of different variable selection methods on potato dry matter detection by hyperspectral imaging technology
  Authors:Zhou, Zhu1 ; Li, Xiaoyu1 ; Gao, Hailong1 ; Tao, Hailong1 ; Li, Peng1 ; Wen, Dongdong1 
  Author affiliation:1  College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
  Corresponding author:Li, X. (lixiaoyu@mail.hzau.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:128-133 185
  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 improve precision determination of dry matter content in potatoes by hyperspectral image technology, several variable selection methods such as PCA, siPLS, GA-PLS, UVE and competitive adaptive reweighed sampling (CARS) were compared. A combinatorial method named CARS-SPA (successive projections algorithm) was proposed to select variables from 678 wavelength variables. The number of wavelength variables was reduced to 27. A multivariate linear regression model (MLR) based on these 27 wavelength variables was developed to predict DM content with Rp of 0.86, and RMSEP of 1.06%. It was concluded that hyperspectral imaging technology could be used to detect potato dry matter concentration and CARS-SPA was a feasible and efficient algorithm for the spectral variable selection.
  Number of references:18
  Main heading:Imaging techniques
  Controlled terms:Coherent scattering  -  Genetic algorithms  -  Linear regression
  Uncontrolled terms:Combinatorial method  -  Dry matter content  -  Dry matters  -  Efficient algorithm  -  Hyper-spectral images  -  HyperSpectral  -  Hyperspectral Imaging  -  Multivariate linear regression model  -  Potato  -  Potato dry matter   -  Several variables  -  Spectral variables  -  Successive projections algorithm  -  Variable selection  -  Variable selection methods
  Classification code:711 Electromagnetic Waves  -  723 Computer Software, Data Handling and Applications  -  741 Light, Optics and Optical Devices  -  746 Imaging Techniques  -  921 Mathematics  -  922.2 Mathematical Statistics
  DOI:10.6041/j.issn.1000-1298.2012.02.026
  Database:Compendex

35. Accession number:20121114853369
  Title:Dynamics and simulation of rigid-flexible coupling robot arm with flexible joint and link
  Authors:Wang, Binrui1 ; Fang, Shuiguang1 ; Jin, Yinglian1 
  Author affiliation:1  College of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310018, China
  Corresponding author:Wang, B. (wangbinrui@163.com) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:211-215 225
  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:For the flexible manipulator, rigid-flexible coupling dynamics model was established based on the Lagrangian equations by regarding the flexible joint as a non-linear torsional spring model. Assumed model method was used to transform physical coordinate to modal coordinate. ADAMS was adopted to build virtual prototype for simulation of link flexibility. A Runge-Kutta algorithm was programmed by Matlab to solve dynamics equations considering both link and joint flexibility. Aiming at simulation of manipulators swing under the gravity and driving torque, tip deformation and angle under different loads were given. Coupling characteristics of the joint and link flexibility were studied. Results showed that joint flexibility could not be ignored. The vibration range of manipulator under coupling of the joint and link flexibility was less than sum of individual flexibility vibration. Vibration mode was determined by the joint and link flexibility jointly, but amplitude was mainly influenced by driving torque. The dynamics and solving method were proper.
  Number of references:15
  Main heading:Computer simulation
  Controlled terms:Dynamics  -  Flexible couplings  -  Flexible manipulators  -  Manipulators  -  MATLAB
  Uncontrolled terms:Coupling characteristic  -  Driving torques  -  Dynamics equation  -  Flexible joints  -  Joint flexibility  -  Lagrangian equations  -  Link flexibility  -  Modal coordinates  -  Model method  -  Rigid flexible coupling   -  Robot arms  -  Runge-Kutta algorithms  -  Simulation  -  Solving method  -  Tip deformation  -  Torsional springs  -  Vibration modes  -  Virtual prototype
  Classification code:602.2 Mechanical Transmissions  -  723.5 Computer Applications  -  731.5 Robotics  -  931.1 Mechanics
  DOI:10.6041/j.issn.1000-1298.2012.02.040
  Database:Compendex

36. Accession number:20121114853330
  Title:Mixed lateral controller design for intelligent vehicle based on switching
  Authors:Guo, Jinghua1 ; Hu, Ping1 ; Li, Linhui1 ; Wang, Rongben2 ; Guo, Lie1 
  Author affiliation:1  State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China
                 2  College of Traffic, Jilin University, Changchun 130012, China
  Corresponding author:Li, L. (lilinhui81@gmail.com) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:1-5
  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 different dynamic performances of intelligent vehicle under various conditions, mixed switching lateral controller was designed that consists of optimal control law obtained through the linear quadratic form optimal track control theory and fuzzy control law obtained by fuzzy logic analysis. When the error and error rate was small, the steering controller was switched to optimal control law. When the error and error rate was greater than or equal to the threshold, the fuzzy control law was selected. Simulative researched on the lateral control algorithm of intelligent vehicle using ADAMS and Matlab/Simulink co-simulation control, and tested by experimental. Simulation and experimental results showed that the unmanned vehicle controlled by the proposed algorithm could track the reference paths under various conditions accurately and riding quality.
  Number of references:10
  Main heading:Controllers
  Controlled terms:Algorithms  -  Control  -  Fuzzy control  -  Fuzzy logic  -  Intelligent vehicle highway systems  -  Number theory  -  Riding qualities
  Uncontrolled terms:Cosimulation  -  Dynamic performance  -  Error rate  -  Fuzzy logic analysis  -  Lateral control  -  Lateral controllers  -  Linear quadratic  -  MATLAB /simulink  -  Optimal control law  -  Reference path   -  Steering controllers  -  Switching control
  Classification code:921 Mathematics  -  732.1 Control Equipment  -  732 Control Devices  -  731 Automatic Control Principles and Applications  -  723.5 Computer Applications  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  682.1.1 Railroad Cars
  DOI:10.6041/j.issn.1000-1298.2012.02.001
  Database:Compendex

37. Accession number:20121114853336
  Title:Design and contrast studies of dual-mode mechanical-electronic transmission scheme
  Authors:Li, Hongcai1 ; Yan, Qingdong1 ; Wang, Weida1 ; Ming, Bo2 ; Chen, Jiexiang2 
  Author affiliation:1  National Key Lab. of Vehicular Transmission, Beijing Institute of Technology, Beijing 100081, China
                  2  Department of Technical Support Engineering, Academy of Armored Forces Engineering, Beijing 100072, China
  Corresponding author:Li, H. (armwtank@bit.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:31-36
  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 working principle of multi-mode mechanical-electronic transmission machinery was introduced. The broken line speed characteristics of dual-mode mechanical-electronic transmission were proposed, and a design method based on the speed characteristics of dual-mode mechanical-electronic transmission was provided. Four kinds of dual-mode mechanical-electronic transmission schemes were designed. Theoretical analysis and simulation on speed, torque and power characteristics were compared. The program of the engine input connecting with the gear ring of the first planetary gear set met the vehicle requirements of the relationship between speed, torque and power. The parameter adjusting range of planetary gear set was wider, program application was flexible. The relative electric power split, the motor weak magnetic ratio, the cooling method and system application background must be regarded as the considering factors.
  Number of references:11
  Main heading:Transmissions
  Controlled terms:Design  -  Machine design  -  Machinery  -  Speed
  Uncontrolled terms:Analysis and simulation  -  Contrast studies  -  Cooling methods  -  Design method  -  Dual modes  -  Electric power  -  Electro-mechanical  -  Gear ring  -  Multimodes  -  Planetary Gears   -  Power characteristic  -  Rotational speed  -  Speed characteristics  -  System applications  -  Transmission schemes  -  Working principles
  Classification code:408 Structural Design  -  601 Mechanical Design  -  602.2 Mechanical Transmissions  -  931.1 Mechanics
  DOI:10.6041/j.issn.1000-1298.2012.02.007
  Database:Compendex

38. Accession number:20121114853368
  Title:Topology structure design of 1T-2R parallel stable platform
  Authors:Fang, Lifeng1 ; Liu, Anxin1 ; Yang, Tingli2 ; Chang, Xing1 ; Wu, Guanghua1 ; Li, Yong1 
  Author affiliation:1  Engineering Institute of Engineering, PLA University of Science and Technology, Nanjing 210007, China
                 2  Jinling Petrochemical Corporation, SINOPEC, Nanjing 210042, China
  Corresponding author:Fang, L. (faiwen5069@163.com) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:205-210
  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:Topology structure design of low-DOF parallel stable platform was studied based on POC set theory and SOC unit. Taking the 1-translation and 2-rotation (1T-2R) parallel mechanism as an example, the detail procedure for low-DOF parallel stable platform topology structure design was formulated. The SOC branches with 1T-2R output were presented, and many new 1T-2R topology structure types were obtained by arranging the suitable SOC branches. The design personnel may select the best topology structure from these obtained structure types and its topology parameters based on concrete performance indices and other design requirements. And the method has some reference for other low-DOF stable platforms or PM structure designing and election.
  Number of references:8
  Main heading:Topology
  Controlled terms:Design  -  Mechanisms
  Uncontrolled terms:POC set  -  SOC  -  Stable platform  -  Structural synthesis  -  Topology structure
  Classification code:408 Structural Design  -  601.3 Mechanisms  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
  DOI:10.6041/j.issn.1000-1298.2012.02.039
  Database:Compendex

39. Accession number:20121114853333
  Title:Optimization design and characteristics analysis for combined steering mechanism
  Authors:Han, Jun1 ; Chen, Gaojie1 ; Li, Wei1 ; Jin, Haibo2 ; Zhao, Chuming1 
  Author affiliation:1  The First Engineers Scientific Research Institute, General Armaments Department, Wuxi 214035, China
                 2  College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210017, China
  Corresponding author:Han, J. (hanjun2002@msn.com) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:16-20 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:An oscillating combined steering mechanism was introduced. With Denavit-Hatenberg homogeneous transformed matrix, the kinematics model of the steering mechanism was constructed. The multi-objective optimization method for designing the location of key hinge was proposed. The engineering illustration of steering mechanism was calculated, and the result was proved by the ADAMS software. Some characteristics of steering mechanism, such as the asymmetry of steering drive oil cylinder control, steering smoothness, skidding behavior, and symmetrical distribution were analyzed. The proposed method was reliable and simple, and had important practical value for engineering applications. The steering mechanism had some merits, such as small turn radius, little side slide, easily controllable, it will have wide applied range in engineering vehicle.
  Number of references:10
  Main heading:Automobile steering equipment
  Controlled terms:Mathematical models  -  Multiobjective optimization
  Uncontrolled terms:ADAMS software  -  Characteristics analysis  -  Engineering applications  -  Engineering vehicles  -  Kinematics models  -  Multi objective optimizations (MOO)  -  Optimization design  -  Steering characteristics  -  Steering mechanisms  -  Turn radius
  Classification code:663.2 Heavy Duty Motor Vehicle Components  -  921 Mathematics  -  921.5 Optimization Techniques
  DOI:10.6041/j.issn.1000-1298.2012.02.004
  Database:Compendex

40. Accession number:20121114853354
  Title:Effect of extrusion processing parameters on breakdown value of restructuring rice
  Authors:Zheng, Guangzhao1 ; Xiao, Zhigang1 ; Sun, Shukun1 ; Wang, Limin1 ; Liu, Yuxin1 ; Li, Jie1 
  Author affiliation:1  College of Food Science, Northeast Agricultural University, Harbin 150030, China
  Corresponding author:Xiao, Z. (zhigangx@sina.com) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:121-127 169
  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 aid of the combination design of quadratic orthogonal rotation was adopted to analyze the effects of barrel temperature, material moisture, screw speed, L-a-PC addition on breakdown value of restructuring rice, and the quadratic regression model of rice breakdown characteristics was deduced. Then a response surface method was employed to obtain the effect order of four factors on the yield of restructuring rice: barrel temperature, L-a-PC addition, screw speed and material moisture. Through frequency excellent-choosing, the optimization breakdown parameter range respectively was: barrel temperature of 71.1-75.5°C, moisture of material of 29.2%-30.5%, rotation speed of extruder of 185-208 r/min, L-a-PC addition of 0.44%-0.55%. The restructuring rice that obtained under these conditions, after repeated experimental verification, the average of value of breakdown of restructuring rice was 1221 cp, to meet feature requests that the general breakdown of rice to cooking rice (more than 1200 cp).
  Number of references:16
  Main heading:Moisture
  Controlled terms:Extrusion  -  Regression analysis  -  Screws
  Uncontrolled terms:Barrel temperature  -  Breakdown characteristics  -  Breakdown value  -  Combination design  -  Experimental verification  -  Extrusion processing  -  Feature requests  -  L-a-PC  -  Parameter range  -  Quadratic orthogonal rotation   -  Quadratic regression  -  Response surface method  -  Restructuring rice  -  Rotation speed  -  Screw speed
  Classification code:535.2.2 Metal Forming Practice  -  605 Small Tools and Hardware  -  801.4 Physical Chemistry  -  922.2 Mathematical Statistics
  DOI:10.6041/j.issn.1000-1298.2012.02.025
  Database:Compendex

41. Accession number:20121114853350
  Title:Spray characteristics experiment of rice husk derived bio-oil
  Authors:Zhang, Dong1 ; Long, Tan1 ; Zhu, Xifeng1  
  Author affiliation:1  Key Laboratory for Biomass Clean Energy of Anhui Province, University of Science and Technology of China, Hefei 230026, China
  Corresponding author:Zhu, X. (xfzhu@ustc.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:101-105
  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 spray characteristics of bio-oil for combustion were investigated by phase Doppler anemometry (PDA) with Sauter mean diameter (SMD) as evaluating indicator. The effects of air liquid mass flow ratio (ALR) on SMD were analyzed. The SMD distributions along axial direction of bio-oil, diesel and bio-oil/ethanol blend spray droplets were also compared. The results showed that SMD of bio-oil spray droplets exhibited a tendency to first decrease and then increase along axial direction and increased continuously along radial direction. The SMD diminished with the increase of gas-liquid flow ratio and had little variation when the gas-liquid flow ratio exceeded a certain value. Among three kinds of fuels, the atomizing quality of diesel was the best, while that of the bio-oil was the worst. By adding ethanol to the bio-oil, the atomizing quality was improved. The empirical equation for the SMD was derived. The predicted results were found to be in a good agreement with the experiment results, which confirmed the reliability of the empirical equation and would offer information for designing bio-oil spray nozzle and optimizing bio-oil combustion conditions.
  Number of references:15
  Main heading:Experiments
  Controlled terms:Drop breakup  -  Ethanol  -  Liquids  -  Two phase flow
  Uncontrolled terms:Axial direction  -  Bio oil  -  Combustion condition  -  Empirical equations  -  Evaluating indicators  -  Gas liquid flows  -  Liquid mass flow ratio  -  Phase Doppler anemometry  -  Radial direction  -  Rice husk   -  Sauter mean diameter (SMD)  -  Spray characteristics  -  Spray droplet
  Classification code:523 Liquid Fuels  -  631.1 Fluid Flow, General  -  901.3 Engineering Research  -  931.2 Physical Properties of Gases, Liquids and Solids
  DOI:10.6041/j.issn.1000-1298.2012.02.021
  Database:Compendex

42. Accession number:20121114853364
  Title:White foreign fibers detection in cotton using line laser
  Authors:Hua, Caijian1, 2 ; Su, Zhenwei1 ; Qiao, Li1 ; Shi, Jinfang1 
  Author affiliation:1  School of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065, China
                 2  School of Computer Science, Sichuan University of Science and Engineering, Zigong 643000, China
  Corresponding author:Su, Z. (zhenweisu99@hotmail.com) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:181-185
  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 problem of detecting white foreign fibers in cotton, the optical characteristics of cotton and foreign fibers were analyzed, and then a detecting method based on a line-construction laser for illumination was set up. The experimental results indicated that the histograms of the gray images of cotton and white foreign fibers were of dual-peak distributions, and the contrast between white foreign fibers and cotton was remarkably enhanced by the detecting method. Thus, a simple threshold segmentation algorithm was effectively used for detection of the white foreign fibers in cotton. The results indicated that the mean detectable rate of six typical foreign fibers reached to 92.08%.
  Number of references:14
  Main heading:Fibers
  Controlled terms:Computer vision  -  Cotton  -  Image segmentation
  Uncontrolled terms:Detecting methods  -  Foreign fiber  -  Foreign fibers detection  -  Gray image  -  Optical characteristics  -  Threshold segmentation
  Classification code:723.5 Computer Applications  -  741.1 Light/Optics  -  812 Ceramics, Refractories and Glass  -  817 Plastics and Other Polymers: Products and Applications  -  819.1 Natural Fibers
  DOI:10.6041/j.issn.1000-1298.2012.02.035
  Database:Compendex

43. Accession number:20121114853362
  Title:Interactive petiole modeling method based on data constrains
  Authors:Miao, Teng1 ; Zhao, Chunjiang2 ; Guo, Xinyu2 ; Lu, Shenglian2 ; Wen, Weiliang2 
  Author affiliation:1  College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
                 2  National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
  Corresponding author:Zhao, C. (zhaocj@nercita.org.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:170-174
  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 petiole modeling method based on keeping original data constant technology was presented. The length and radius parameters were set to establish a 3-D model, and the surface hair simulation was used to enhance the sense of reality. In order to produce 3-D models with multiple shapes, an interactive method was proposed to adjust the model shape based on joint chain, IK method and error compensation algorithm which made the method could keep the original parameters (length and radius) constant. The results showed that the method could build 3-D petiole model quickly and flexibly, and had good realistic effect. More importantly, the variation of parameters was very small in the interactive deformation process.
  Number of references:17
  Main heading:Three dimensional
  Controlled terms:Inverse kinematics  -  Models  -  Three dimensional computer graphics
  Uncontrolled terms:3D models  -  Compensation algorithm  -  Data constrains  -  Deformation process  -  Hair simulation  -  Interactive methods  -  Modeling method  -  Petiole  -  Shape based  -  Variation of Parameters
  Classification code:723.5 Computer Applications  -  902.1 Engineering Graphics  -  931.1 Mechanics
  DOI:10.6041/j.issn.1000-1298.2012.02.033
  Database:Compendex

44. Accession number:20121114853349
  Title:Analytical conditions and visualized verification of knotter hook's rope-biting
  Authors:Wang, Lei1 ; Lü, Huangzhen2 ; Wei, Wenjun1 ; Han, Lujia1 ; Zhang, Shaoying1  
  Author affiliation:1  College of Engineering, China Agricultural University, Beijing 100083, China
                 2  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
  Corresponding author:Zhang, S. (cauzsy@cau.edu.cn) 
  Source title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:Nongye Jixie Xuebao
  Volume:43
  Issue:2
  Issue date:February 2012
  Publication year:2012
  Pages:96-100
  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 check the reliability and accuracy of bill hook's biting ropes in the knotting process of Deerting knotter, the space trajectory equation of key positions related to knotter and biting was solved with the help of mathematical analytical method. The general evaluation equation to predict the existing knotter structure, matching relationships between motions was established according to the position and movement requirement of knotter hook's rope-biting. In addition, a visual demonstration of the matching relations between the existing knitter structure and motion parameters was produced by means of Matlab. Such methods had a predictable effect on different designs of knotter hook and twine retainer, and directive function in revising data and adjusting information.
  Number of references:12
  Main heading:Hooks
  Controlled terms:Rope  -  Space flight  -  Twine
  Uncontrolled terms:Analytical conditions  -  Analytical method  -  Bite  -  Deerting knotter  -  Motion parameters  -  Space trajectories
  Classification code:535 Rolling, Forging and Forming  -  656.1 Space Flight  -  693.1 Cranes  -  694.2 Packaging Materials
  DOI:10.6041/j.issn.1000-1298.2012.02.020
  Database:Compendex