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2008年第39卷第4期共收錄41篇

 1.   Accession number:  082211286206    
Title:  Simulative kinematics analysis on the affecting factors of rate of broken biennial root of single base cutter of sugarcane harvester    
Authors:  Lu, Yong; Yang, Jian; Liang, Zhaoxin; Mo, Jianlin; Qiao, Yanhui    
Author affiliation:  Guangxi University, Nanning 530004, China    
Serial title: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title: Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 50-55    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Sugarcane cutting was analyzed with the currency finite element analysis software ANSYS, and distinguish standard of single base cutter on the bad incision state has been worked out by means of finite element. Through physical simulative experiment, distinguish standard of broken root by base cutter's pressing was formulated. Simulative kinematics analysis of cutting sugarcane continuously has been carried out by using the dynamics analysis software ADAMS, and the quantity study on affecting factors and interactive effect on the rate of broken biennial root was done. The results showed that the combination of low frequency and low speed ratio, low amplitude and few razor blades are beneficial in reducing the rate of broken biennial root. Under the combination of factors (amplitude and frequency is zero, speed ratioX1=24, obliquity of base cutterX4=15°, the number of razor bladesX5=2), the rate of broken biennial root is 6.7%.
Number of references:  8
Ei main heading:  Cutting tools    
Ei controlled terms:  Computer simulation  -  Computer software  -  Harvesters  -  Kinematics  -  Mechanisms  -  Sugar cane    
Uncontrolled terms:  Cutter  -  Bad incision state  -  Rate of broken biennial root    
Ei classification codes:  605 Small Tools and Hardware  -  723.5 Computer Applications  -  821.1 Agricultural Machinery and Equipment  -  821.4 Agricultural Products  -  931.1 Mechanics    
Treatment:  Applications (APP)   
Database:  Compendex      
Compilation and indexing terms, ? 2007 Elsevier Inc. All rights reserved       
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 2.  Accession number:  082211286207
Title:  Structural design of the base cutter for mini-type sugarcane harvester    
Authors:  Xiang, Jiawei; Yang, Lianfa; Li, Shangping     
Author affiliation:  Guilin University of Electronic Technology, Guilin 541004, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 56-59    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: According to the characteristics of mini-type sugarcane harvester and optimal crop parameters, the knife was designed with reasonable structures. Consequently, the sugarcane harvester base cutter was designed. The engineering analysis software was employed to accomplish analyzing the structural kinetic, static and dynamic analysis of the knife and the corresponding sugarcane harvester base cutter. Then the structural reliability and crop performance were validated. The natural frequencies of the designed base cutter and its possible destroy forms were also attained, which provided some references for sugarcane harvester designing. The 3-D model software was applied to plot the 3-D model of the base cutter. It can be used for the exploitation of the physical prototype for further applications.
Number of references:  11    
Ei main heading:  Structural design    
Ei controlled terms:  Cutting tools  -  Dynamic analysis  -  Harvesters  -  Natural frequencies  -  Sugar cane     Uncontrolled terms:  Base cutter  -  Knife  -  Optimal crop parameters  -  Structural reliability    
Ei classification codes:  408.1 Structural Design, General  -  422.2 Test Methods  -  605 Small Tools and Hardware  -  821.1 Agricultural Machinery and Equipment  -  821.4 Agricultural Products    
Treatment:  Applications (APP)    
Database:  Compendex
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3. Accession number:  082211286205
Title:  Ionic current detection and analysis in constant volume combustion chamber    
Authors:  Li, Wenzhe; Li, Dong     
Author affiliation:  Northeast Agricultural University, Harbin 150030, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 47-49    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: The experiment established ionic current detection system by applying ionic current method and on the basic of ion current production mechanism and detection method. Ionic current signal was detected in progress of combustion in constant volume combustion chamber on this system. The characteristic of ionic current and pressure signal in constant volume combustion chamber was investigated in the experiment. It is concluded that ionic current signal could reflect the state of combustion by analyzing ionic current signal and pressure signal in combustion chamber.    
Number of references:  8    
Ei main heading:  Combustion    
Ei controlled terms:  Combustion chambers  -  Electric currents  -  Internal combustion engines  -  Ions  -  Pressure  -  Spark plugs     Uncontrolled terms:  Ionic current  -  Pressure signal  -  Detection  -  Constant volume combustion chamber    
Ei classification codes:  521.1 Fuel Combustion  -  612.1 Internal Combustion Engines, General  -  654.2 Rocket Engines  -  701.1 Electricity: Basic Concepts and Phenomena  -  931.1 Mechanics    
Treatment:  Applications (APP)    
Database:  Compendex
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4. Accession number:  082211286209
Title:  Development of a high cavitation characteristics and multi-nozzle jet centrifugal pump    
Authors:  Yuan, Danqing; Wu, Jun; Yang, Minguan; Cong, Xiaoqing; Lu, Weigang     
Author affiliation:  Jiangsu University, Zhenjiang 212013, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 65-68    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Installation of a jet device in centrifugal pump inlet can improve property of anti-cavitation. Because of the limitation of structural dimension for traditional single injector jet device, the throat cannot be long, so the flow can not be fully mixed, which results the low efficiency of the jet device and the improvement of cavitation performance is not good. A new method has been advanced. Using multi-nozzle jet device to enhance the energy of sucked liquid, in case the throat was short, the mixture of energy could be uniformly mixed, which enhanced the efficiency of the jet device. The basic structure of multi-nozzle jet centrifugal pump was presented, some corresponding theoretical analysis was made and comparison test was done. The results showed that the installation of multi-nozzle jet device could increase the inlet pressure to 1.53 m. This method opened a new path for solving the cavitation problem of centrifugal pump and has an important significance in practical application.    
Number of references:  6    
Ei main heading:  Centrifugal pumps    
Ei controlled terms:  Efficiency  -  Installation  -  Jets  -  Nozzles  -  Pressure  -  Structures (built objects)     Uncontrolled terms:  Multinozzle  -  Jet device  -  Cavitation characteristics  -  Inlet pressure    
Ei classification codes:  408 Structural Design  -  601 Mechanical Design  -  618.2 Pumps  -  631.1 Fluid Flow, General  -  913.1 Production Engineering  -  931.1 Mechanics    
Treatment:  Applications (APP)    
Database:  Compendex
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5. Accession number:  082211286208
Title:  Study on high-speed image of working principle of vertical plate seed-metering device    
Authors:  Liu, Hongxin; Wang, Fulin     
Author affiliation:  Northeast Agricultural University, Harbin 150030, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 60-64 46    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: A testing device was designed in order to study the working principle of vertical plate seed-metering device, improve the intensive research and enhance its working performance. The video information of working process was obtained by using high-speed image technique. The working principle of this device was clarified by the current study through high-speed image technique and data analysis, and the concrete scheme was put forward to enhance its performance. It has important instructional sense for the theoretical and practical research of seeding-machine.
Number of references:  11    
Ei main heading:  Agricultural implements    
Ei controlled terms:  Agricultural machinery  -  Filling  -  High speed photography  -  Seed  -  Testing     Uncontrolled terms:  Seed metering device  -  Vertical plate  -  Working principle  -  High speed image  -  Video information  -  Seeding machine    
Ei classification codes:  422.2 Test Methods  -  691.2 Materials Handling Methods  -  742.1 Photography  -  821.1 Agricultural Machinery and Equipment  -  821.4 Agricultural Products    
Treatment:  Applications (APP)    
Database:  Compendex
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6. Accession number:  082211286210
Title:  Flow analysis of the pump-turbine runner in the pump mode    
Authors:  Zhang, Lanjin; Ji, Xingying; Chang, Jinshi     
Author affiliation:  China Agricultural University, Beijing 100083, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 69-72 82    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Based on 3-D-steady Navier Stokes equations with the standard k-ε turbulence closure models, the structure mesh with fitted body coordinate and the finite element based finite volume method, the 400 meters head pump-turbine runner inner flow was simulated in the pump mode. The head, efficiency and net positive suction head of the pump-turbine have been calculated through integrating the velocity and pressure of the finite volume in the runner. The velocity, vorticity and the blade pressure distribution rules were all discussed. The meridional velocity near the leading edge of the blade had the 'S' shape along the radius, and that near the trailing edge of the blade had the 'M' shape along the radius. The vorticity mainly appeared on the blade, crown and band of the runner.    
Number of references:  10    
Ei main heading:  Flow fields    
Ei controlled terms:  Computer simulation  -  Finite volume method  -  Hydraulic turbines  -  Navier Stokes equations  -  Pressure distribution  -  Pumps  -  Turbomachine blades  -  Velocity  -  Vorticity     Uncontrolled terms:  Pump turbine  -  Runner  -  Pump mode  -  Numerical simulation  -  Flow analysis    
Ei classification codes:  617.1 Hydraulic Turbines  -  618.2 Pumps  -  631.1 Fluid Flow, General  -  723.5 Computer Applications  -  921.6 Numerical Methods  -  931.1 Mechanics    
Treatment:  Applications (APP)    
Database:  Compendex      
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7. Accession number:  082211286223
Title:  Application of wireless LAN technology of consumed power measurement of cornstalk breaking    
Authors:  Zhang, Chaofan; Huang, Hongwei; Tang, Zhijun     
Author affiliation:  Luohe Occupation Technical College, Luohe 462002, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 125-127    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Real-time test for an agricultural machine was very complex in the field and the traditional method of test for consumed power of cornstalk breaking was taken by wire. Now a new method of consumed power measurement was introduced. By means of wireless local area networks technology, the consumed power of cornstalk breaking was measured easily and safely in the field. By adopting orthogonal regression experiment, the results showed that when the speed of corn chopper was 2.9 km/h and the rotary speed of knife axis was 597 r/min, the optimal parameters of consumed power and the percent smashing quality were respectively 2.98 kW and 90.017%.    
Number of references:  10    
Ei main heading:  Electric power utilization    
Ei controlled terms:  Agricultural machinery  -  Measurements  -  Real time systems  -  Straw  -  Wireless local area networks (WLAN)     Uncontrolled terms:  Cornstalk breaking  -  Percent smashing quality  -  Power measurement  -  Virtual instrument  -  Power consumption  -  Corn chopper  -  Knife axis    
Ei classification codes:  706.1 Electric Power Systems  -  716 Telecommunication; Radar, Radio and Television  -  722.4 Digital Computers and Systems  -  821.1 Agricultural Machinery and Equipment  -  821.5 Agricultural Wastes  -  942 Electric and Electronic Measuring Instruments    
Treatment:  Applications (APP)    
Database:  Compendex
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8. Accession number:  082211286224
Title:  Topology optimization design of structure and supports for continuum-type structures    
Authors:  Zhou, Xiangyang; Chen, Liping; Huang, Zhengdong     
Author affiliation:  Huazhong Univ. of Sci. and Technol., Wuhan 430074, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 128-131 68    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Support conditions were given and unchanged in standard topology optimization. An integrated method, which was based on SIMP (solid isotropic material with penalization model) and for structure and supports, has been proposed. Support conditions were introduced as a new set of design variables that represented supported areas. In this work, supports were simulated as elastic springs such as the supports in the optimal design could be considered either free or fixed. The method has been applied in compliance minimization and several 2D examples were tested. The effects of variable cost on supports, the original stiffness of the spring and intermediate densities of supports were discussed. The support conditions and structure were optimized simultaneously, which extended the standard topology optimization method and proposed a new method for supports design.    
Number of references:  9    
Ei main heading:  Supports    
Ei controlled terms:  Beams and girders  -  Bridges  -  Design  -  Optimization  -  Structures (built objects)  -  Topology     Uncontrolled terms:  Solid isotropic material with penalization model (SIMP)  -  Variable cost  -  Original stiffness of spring  -  Intermediate densities    
Ei classification codes:  401.1 Bridges  -  408.2 Structural Members and Shapes  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory  -  921.5 Optimization Techniques    
Treatment:  Applications (APP)    
Database:  Compendex
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 9.   Accession number:  082211286225
Title:  Kinematics and singularity analysis of a novel weakly-coupled parallel manipulator    
Authors:  Zhang, Yanbin; Liu, Hongzhao; Wu, Xin; Mu, Anle     
Author affiliation:  Xi'an University of Technology, Xi'an 710048, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 132-136    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: A novel weakly-coupled spatial parallel manipulator with three degrees-of-freedom (DOFs), containing two-translational and one-rotational (2T1R) DOFs, was addressed. The manipulator consisted of a moving platform and a fixed base connected by two limbs, in which one limb contained a planar five-bar closed loop, and another included a planar parallelogram. Three actuated joints of the manipulator were all mounted on the base. Analytic solutions of position for both direct and inverse kinematics were derived. The mapping relationship between the actuated joints velocity vector space and moving platform velocity vector space has been established. Simulation curves of the inverse solutions of position and velocity were described. The conditions of each kind of singularity configurations of the manipulator, according to the classification of singularity, were discussed in detail, and a theoretic basis for path planning and control of the mechanism was provided. The manipulator proposed here, has widely potential application in the fields of parallel machine tools, simulators and massage robots.    
Number of references:  11    
Ei main heading:  Manipulators    
Ei controlled terms:  Computer simulation  -  Degrees of freedom (mechanics)  -  Inverse kinematics  -  Kinematics  -  Machine tools  -  Mapping  -  Robots  -  Simulators     Uncontrolled terms:  Parallel manipulator  -  Kinematics analysis  -  Singularity  -  Actuated joints velocity vector space  -  Moving platform velocity vector space    
Ei classification codes:  603.1 Machine Tools, General  -  691.1 Materials Handling Equipment  -  723.5 Computer Applications  -  731.5 Robotics  -  902.1 Engineering Graphics  -  931.1 Mechanics    
Treatment:  Applications (APP)    
Database:  Compendex
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 10.   Accession number:  082211286226
Title:  Simulation and design of six-axis vibration semi-active control device    
Authors:  Chen, Xiuxiang; Ma, Luzhong     
Author affiliation:  Jiangsu University, Zhenjiang 212013, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 137-141    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Based on Hexapod parallel mechanisms and magnetorheological damper, a new six-axis semi-active vibration control device was presented, the problem of system structural design, Jacobian matrix analysis, modal analysis, semi-active control model have been discussed, and control algorithm research, and prototyping simulation analysis have been done. The results of theory and simulation analysis showed that the six-axis semi-active vibration control device could achieve six-axis vibration semi-active damping control; therefore, it has theoretical and application value.    
Number of references:  11    
Ei main heading:  Vibration control    
Ei controlled terms:  Computer simulation  -  Damping  -  Modal analysis  -  Structural design     Uncontrolled terms:  Six axis vibration  -  Semiactive control device  -  Hexapod parallel mechanisms  -  Magnetorheological damper  -  Control algorithm  -  Prototyping simulation  -  Jacobian matrix analysis    
Ei classification codes:  408.1 Structural Design, General  -  723.5 Computer Applications  -  731.3 Specific Variables Control  -  921 Mathematics  -  931.1 Mechanics    
Treatment:  Applications (APP)    
Database:  Compendex
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11. Accession number:  082211286195
Title:  Research on the interaction between lunar rover wheel and lunar soil by simulation    
Authors:  Li, Jianqiao; Zou, Meng; Jia, Yang; Ren, Luquan; Li, Yinwu     
Author affiliation:  Jilin University, Changchun 130025, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 1-4 23    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Based on the analysis of FEM (finite element method) and DEM (discrete element method), the research considered that the DEM is feasible and superior to the FEM in simulating the interaction between wheel and the lunar soil. The model of the interaction between rigid wheel and lunar soil has been set up. The system of soil bin was simulated by means of software PFC2D. Parameters of the lunar soil for DEM model were confirmed in the biax test, and the angle of internal friction was 42°, the cohesion was 1.554 kPa, the Poisson radio was 0.41, and the Young's modulus was 77.5 MPa. The DEM model of the slip, sinkage, and draw-bar pull were found, which were checked out by the soil bin test. The results showed that the trend is consistent. Finally, the traffic ability of nonrug-wheel and the rug-wheel were compared, and the results showed that the slip radio was zero of the rug-wheel and was 1.8% of the nonrug-wheel under the tractive resistance was zero, and the draw-bar pull was 121.6 N of the rug-wheel and was 7.71 N of the nonrug-wheel, when the clip ratio is 10%.    
Number of references:  10    
Ei main heading:  Vehicle wheels    
Ei controlled terms:  Computer simulation  -  Elastic moduli  -  Finite element method  -  Internal friction  -  Moon  -  Poisson ratio  -  Soils     Uncontrolled terms:  Lunar rover wheel  -  Lunar soil  -  Discrete element method (DEM)  -  Rigid wheel  -  Vehicle terramechanics  -  Software PFC2D  -  Internal friction angle  -  Cohesion    
Ei classification codes:  421 Strength of Building Materials; Mechanical Properties  -  483.1 Soils and Soil Mechanics  -  601.2 Machine Components  -  723.5 Computer Applications  -  921.6 Numerical Methods  -  931.2 Physical Properties of Gases, Liquids and Solids    
Treatment:  Applications (APP)    
Database:  Compendex
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12. Accession number:  082211286196
Title:  Sliding mode model-following control of automobile semi-active suspension system    
Authors:  Yao, Jialing; Zheng, Jiaqiang; Cai, Weiyi     
Author affiliation:  Nanjing Forestry University, Nanjing 210037, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 5-8 38    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: The purpose is to present a new robust strategy in controlling the semi-active suspension system. The strategy utilized the sliding mode model-following control scheme. A quarter-car model was used in the project, and the proposed controller was easy to be implemented, and it was not necessary to measure the road signal and damper force. An approximate ideal skyhook system was used by the controller as a reference model, and the control law was determined so that an asymptotically stable sliding mode would occur in the error dynamics between the plant and the reference model states. A uniform reaching law was adopted to improve the dynamic quality of sliding mode motion. The performance of the controller has been compared with the passive system, the practical skyhook and the ideal skyhook systems. A simulation study was performed to prove the effectiveness and robustness of the control approach.
Number of references:  11    
Ei main heading:  Sliding mode control    
Ei controlled terms:  Automobiles  -  Computer simulation  -  Control equipment  -  Dynamics  -  Robust control  -  Robustness (control systems)  -  Suspensions (components)     Uncontrolled terms:  Sliding mode model following control  -  Road signal  -  Damper force  -  Semiactive suspension system    
Ei classification codes:  601.2 Machine Components  -  662.1 Automobiles  -  731 Automatic Control Principles and Applications  -  732.1 Control Equipment  -  931.1 Mechanics    
Treatment:  Applications (APP)    
Database:  Compendex
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13. Accession number:  082211286227
Title:  Genetic algorithm-based multi-objective optimization for machining scheme selection    
Authors:  Wang, Yiqiang; Guan, Xuesong; Tao, Liyan; Yuan, Xiuhua; Miao, Liqin     
Author affiliation:  Jilin University, Changchun 130025, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 142-146 151    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: For the high-speed development of technology, there are a lot of different machining schemes for one part. The selection of machining scheme is a multi-objective problem. A method based on genetic algorithms (GA) was proposed to find out the set of Pareto-optimal solutions for multi-objective digital machining scheme selection. To deal with multi-objective and enable the engineer to make decision on different demands, an analytic hierarchy process (AHP) was implemented in the proposed procedure to determine the weight value of evaluation indexes. Three conflicting objectives: cost, quality and operation time, were simultaneously optimized. The processing of hole and surface of headstock was used as an example to prove the validity of the hybrid algorithm.
Number of references:  7    
Ei main heading:  Process planning    
Ei controlled terms:  Analytic hierarchy process  -  Costs  -  Genetic algorithms  -  Head frames  -  Machine components  -  Machining  -  Multiobjective optimization  -  Quality assurance     Uncontrolled terms:  Operation time  -  Digital machining scheme  -  Headstock hole  -  Headstock surface    
Ei classification codes:  502.2 Mine and Quarry Equipment  -  601.2 Machine Components  -  604.2 Machining Operations  -  913.1 Production Engineering  -  921 Mathematics  -  961 Systems Science    
Treatment:  Applications (APP)    
Database:  Compendex 
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14. Accession number:  082211286228
Title:  Feature extraction of rotor fault based on wavelet analysis    
Authors:  Wang, Xuejun; Ma, Hui; Sun, Wei; Wen, Bangchun     
Author affiliation:  Northeastern University, Shenyang 110004, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 147-151    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Mother wavelet function 'db12' was adopted for rotor fault with different rub-impact degrees. The displacement signals were decomposed into 6 levels. Reassigned Morlet wavelet scalogram has been used to extract fault features for wavelet frequency bands with obvious time-frequency features. The decomposed signals in different decomposed levels together with their frequency-band energy ratios were discussed in details. The results showed that fault features could be extracted well by combining two mother wavelet functions and frequency-band energy plot in different rub-impact conditions. In the stage of slight rub-impact, high and low frequency components are all small; in the stage of moderate rub-impact, stable X/2 based harmonic components occured and in the stage of serious rub-impact, the energy of harmonic components are greater than rotational frequency and reached the maximum.    
Number of references:  11    
Ei main heading:  Feature extraction    
Ei controlled terms:  Failure (mechanical)  -  Failure analysis  -  Frequency bands  -  Rotating machinery  -  Rotors  -  Wavelet analysis     Uncontrolled terms:  Rub impact  -  Fault diagnosis  -  Rotor fault  -  Wavelet frequency bands  -  Fault features  -  Wavelet functions  -  Frequency band energy plot    
Ei classification codes:  421 Strength of Building Materials; Mechanical Properties  -  601.1 Mechanical Devices  -  601.2 Machine Components  -  751.1 Acoustic Waves  -  921 Mathematics    
Treatment:  Applications (APP)    
Database:  Compendex
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15. Accession number:  082211286197
Title:  Research on controller gain for an electromagnetic damper suspension under random excitation    
Authors:  Li, Xiangsheng; Yang, Yongbai; Li, Xiaoqing; Tang, Xiaohong     
Author affiliation:  Central South University of Forestry and Technology, Changsha 410004, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 9-14    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: The model and control of a single axis electromagnetic suspension for vibration isolation was set up. In order to study the vibration isolation characteristics, a set of linearized dynamic equations were used. The design of state feedback controllers that minimize the mean square absolute displacement response of the suspension and minimize a measure of the system energy dissipation has been considered. In both cases the suspension system was assume to be excited by random white noise disturbances. It is shown that near optimum disturbance attenuation and energy dissipation could be achieved without current feedback. The suboptimum controller gains with the state feedback gains obtained by using linear quadratic optimal control theory have been compared. The result showed that the disturbance attenuation characteristics of the electromagnetic suspension could be made superior to that of a passive isolation system. Experimental results were also presented.
Number of references:  15    
Ei main heading:  Control equipment    
Ei controlled terms:  Electromagnetism  -  Energy dissipation  -  Gain control  -  Optimization  -  State feedback  -  Suspensions (components)  -  Vehicles  -  Vibration control  -  White noise     Uncontrolled terms:  Electromagnetic suspension  -  Controller gain  -  Optimal control  -  Vibration isolation  -  Single axis electromagnetic suspension    
Ei classification codes:  432 Highway Transportation  -  601.2 Machine Components  -  701 Electricity and Magnetism  -  731.1 Control Systems  -  731.3 Specific Variables Control  -  732.1 Control Equipment    
Treatment:  Applications (APP)    
Database:  Compendex
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16. Accession number:  082211286198 
Title:  Development of simulant test bench of motor vehicles regenerative braking    
Authors:  Chen, Qingzhang; He, Ren; Shang, Gaogao     
Author affiliation:  Jiangsu University, Zhenjiang 212013, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 15-17 42    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: In order to research motor vehicles regenerative braking, a hardware-in-the-loop (HIL) bench design was introduced. The modular method and hierarchical control mode have been adopted in test bench hardware structure designing, CAN bus was used to connect each of the controllers, and it has better controllability and expansibility. The software of test bench has been developed based on the virtual instrument technology. The test bench could perform simulating auto driving and braking conditions, energy conversion, energy reclaiming and reusing. The HIL research projects could be carried out on the test bench including braking stability, energy reclaim and reuse, controlling of braking pedal and harmony controlling in plurality braking, also theories of brake-by-wire could be tested after it expanded.
Number of references:  6    
Ei main heading:  Test facilities    
Ei controlled terms:  Automobiles  -  Braking  -  Computer simulation  -  Energy conversion  -  Hardware  -  Instruments  -  Virtual reality     Uncontrolled terms:  Test bench  -  Motor vehicles  -  Regenerative braking  -  Hardware in loop bench  -  Energy reclaiming  -  Energy reusing    
Ei classification codes:  423.1 Test Equipment  -  525.5 Energy Conversion Issues  -  602 Mechanical Drives and Transmissions  -  662.1 Automobiles  -  723.5 Computer Applications    
Treatment:  Applications (APP)    
Database:  Compendex 
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17. Accession number:  082211286211
Title:  Numerical simulation of combustion in a straw-fired boiler    
Authors:  Yu, Zhaosheng; Ma, Xiaoqian     
Author affiliation:  South China University of Technology, Guangzhou 510640, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 73-77    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: As one of the widely utilized renewable energy of environmental protection materials, straw can generate electricity by burning directly. Mathematical modeling methods have been employed to simulate a straw-fired grate boiler, not only the temperature, velocity and concentration distributing of the top of bed in different conditions, but also the burning rate of bed and burning character of furnace chamber were calculated, by varying the ratio of primary air and the second air. The results showed that when the ratio of primary air and the second air is 1.3:0.7, the lowest value of concentration of CO is 0.29 mol/m3, the average temperature of furnace chamber outlet is 1180 K, and concentration of O2 is 2.18 mol/m3. It is proved that the simulation results compared reasonably well with the relative literature measurement data.    
Number of references:  13    
Ei main heading:  Combustion    
Ei controlled terms:  Boilers  -  Carbon monoxide  -  Computer simulation  -  Concentration (process)  -  Electric power generation  -  Electricity  -  Oxygen  -  Straw  -  Temperature     Uncontrolled terms:  Direct burning  -  Straw fired boiler  -  Numerical simulation  -  Primary air ratio  -  Second air ratio  -  Burning rate    
Ei classification codes:  521.1 Fuel Combustion  -  614 Steam Power Plants  -  615 Thermoelectric, Magnetohydrodynamic and Other Power Generators  -  641.1 Thermodynamics  -  723.5 Computer Applications  -  802.3 Chemical Operations  -  804.2 Inorganic Compounds  -  821.5 Agricultural Wastes    
Treatment:  Applications (APP)    
Database:  Compendex
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18. Accession number:  082211286212   
Title:  Study on the chinese light no-till seeders    
Authors:  Gao, Huanwen; Li, Hongwen; Yao, Zonglu     
Author affiliation:  China Agricultural University, Beijing 100083, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 78-82    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: The foreign no-till seeders are heavy, big and expensive, they are not suitable to the Chinese situation of small size land, small tractor power and poor rural economy, and therefore, developing local light no-till seeders is necessary in China. With 10 year efforts since early 90's of the last century, a batch of light no-till seeders with passive anti-blockage were successfully developed and widely applied in one-crop-a-year region of north China. However, the anti-blockage ability of those seeders were limited and hardly used in high yield area. From 2000, several innovative no-till seeders based on active anti-blockage have been created; their anti-blockage abilities reached to international advanced level, the weight of the seeders 50% lighter and price 80% lower than the foreign no-till seeders. The design ideas of foreign no-till seeder are heavy weight and passive anti-blockage; ours are light weight, passive and active anti-blockage for different yield lands. 80000 more sets of light no-till seeders were used in 2007, among them, over 20000 sets had high anti-blockage ability with power driven. China became the first country in using light seeders to realize conservation tillage in the world.    
Number of references:  11    
Ei main heading:  Agricultural implements    
Ei controlled terms:  Agricultural machinery  -  Seed  -  Tractors (agricultural)     Uncontrolled terms:  No till seeders  -  Active antiblockage  -  Passive antiblockage  -  Light weight  -  China    
Ei classification codes:  821.1 Agricultural Machinery and Equipment  -  821.4 Agricultural Products  -  901.4 Impact of Technology on Society    
Treatment:  General review (GEN)    
Database:  Compendex
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19. Accession number:  082211286213
Title:  Effect of time-varying temperature drying on drying characteristics and color of horse mackerel dried by heat pump dehumidifier    
Authors:  Shi, Qilong; Xue, Changhu; Zhao, Ya; Wang, Xiangyou; Li, Zhaojie     
Author affiliation:  Ocean University of China, Qingdao 266003, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 83-86    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Horse mackerels were dried in a heat pump dehumidifier (HPD) which is capable of producing stepwise control of drying air temperature. Two stepwise air temperature profiles were tested. The drying characteristics and total color difference (ΔE) of the products dried under these stepwise variation of temperature were measured and compared with constant air temperature drying. It was observed that by employing stepwise change in drying air temperature with the appropriate starting temperature and cycle time, it was possible to reduce drying time to reach the desired moisture content with significantly improved product color. The optimum condition for time-varying temperature drying of horse mackerel was step-up profile with initial temperature of 20°C and cycle time of 3.5 h.    
Number of references:  11    
Ei main heading:  Drying    
Ei controlled terms:  Color  -  Fish  -  Food products  -  Heat pump systems  -  Optimization  -  Temperature     Uncontrolled terms:  Time varying temperature drying  -  Drying characteristics  -  Horse mackerel  -  Heat pump drying  -  Moisture content  -  Cycle time    
Ei classification codes:  616.1 Heat Exchange Equipment and Components  -  641.1 Thermodynamics  -  642.1 Process Heating  -  822.3 Food Products  -  921.5 Optimization Techniques    
Treatment:  Experimental (EXP)    
Database:  Compendex
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20. Accession number:  082211286214
Title:  Effect of in-situ biodegradation on limonin of citrus juice by lactic acid bacteria    
Authors:  Luo, Shuizhong; Luo, Jianping; Pan, Lihua; Jiang, Shaotong     
Author affiliation:  Hefei University of Technology, Hefei 230009, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 87-90    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: There are kinds of nutrients including Vc in citrus juice. But naringin and limonin, the main bitter substances which are difficult to be accepted during drinking and thus limit the citrus further processing, were also found. The characteristic of limonin biodegradation in citrus juice by lactic acid bacteria was studied. A strain of streptococcus lactis had the maximum percentage of limonin biodegradation rate among the tested lactic acid bacteria. The limonin biodegradation rate of 66.7% was obtained when the strain of streptococcus lactis was cultivated under the optimum conditions of the temperature of juice at 37°C, the original pH of juice, the loading volume of 150 mL juice in 250 mL flask and stationary culture. It was also showed that treatment with lactic acid bacteria had much decrease in the concentrations of limonin and naringin, a little increase in the contents of the soluble solids and the Bx of sugar and little impairment of quality parameters of citrus juice, including pH value and titratable acidity.    
Number of references:  11    
Ei main heading:  Biodegradation    
Ei controlled terms:  Bacteria  -  Lactic acid  -  Optimization  -  Processing  -  Technology  -  Temperature  -  pH     Uncontrolled terms:  Citrus juice  -  Limonin  -  Citrus  -  Biodegradation rate    
Ei classification codes:  461.9 Biology  -  641.1 Thermodynamics  -  801.1 Chemistry, General  -  801.2 Biochemistry  -  804.1 Organic Compounds  -  921.5 Optimization Techniques    
Treatment:  Experimental (EXP)    
Database:  Compendex
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21. Accession number:  082211286229
Title:  Structural design of main bearing cap based on topological optimization and shape optimization    
Authors:  Long, Kai; Zuo, Zhengxing     
Author affiliation:  Beijing Institute of Technology, Beijing 100081, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 152-156    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: A new methodology for main bearing cap design was presented based on topological optimization and shape optimization. In topological optimization, filter functions of elements with respect to the unit volume and stiffness matrices were selected based on RAMP interpolation scheme. In shape optimization, efficient derivatives have been obtained by using approximate-difference strategy. Structural volume was taken as objectives and structural responses such as displacements, stresses were taken as constraints. This kind of model ensured consistency in topological optimization and shape optimization model. Volume of main bearing cap has been minimized subject to rigidity and strength constraints. The feasibility and efficiency of the proposed methods were demonstrated by the experiment.    
Number of references:  9    
Ei main heading:  Shape optimization    
Ei controlled terms:  Bearings (machine parts)  -  Internal combustion engines  -  MATLAB  -  Mathematical models  -  Structural design  -  Structural optimization  -  Topology     Uncontrolled terms:  Main bearing cap  -  Topological optimization  -  Solid isotropic microstructures with penalization (SIMP)  -  Rational approximation of material properties (RAMP)    
Ei classification codes:  408.1 Structural Design, General  -  601.2 Machine Components  -  612.1 Internal Combustion Engines, General  -  723.5 Computer Applications  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory  -  921.5 Optimization Techniques    
Treatment:  Applications (APP)    
Database:  Compendex
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22. Accession number:  082211286230
Title:  Contact fatigue reliability analysis of spiral bevel gear based on MonteCarlo    
Authors:  Guo, Yaobin; Zhang, Wenming; Zhang, Guofen     
Author affiliation:  University of Science and Technology Beijing, Beijing 100083, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 157-159    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Monte Carlo method was applied to simulate the distribution of the contact fatigue stress and the contact fatigue strength of spiral bevel gear, furthermore, reliability was also simulated. The method solved the small sample problem. According to the analysis, the contact fatigue stress of the gear submitted the normal distribution, and the strength of the gear obeyed the lognormal. The reliability error of the contact fatigue was reduced with the increase of the simulation times. Sensitivity analysis has been made on the stress random parameters which probably impacted the contact fatigue reliability of the gear. Results revealed that the affection of mean is remarkable to the reliability of the gear. The standard error is relatively small.    
Number of references:  10    
Ei main heading:  Bevel gears    
Ei controlled terms:  Computer simulation  -  Fatigue of materials  -  Monte Carlo methods  -  Normal distribution  -  Reliability analysis  -  Sensitivity analysis  -  Strength of materials  -  Stresses     Uncontrolled terms:  Spiral bevel gear  -  Contact fatigue  -  Lognormal  -  Reliability error    
Ei classification codes:  421 Strength of Building Materials; Mechanical Properties  -  422.2 Test Methods  -  601.2 Machine Components  -  921 Mathematics  -  922.1 Probability Theory  -  922.2 Mathematical Statistics    
Treatment:  Applications (APP)    
Database:  Compendex
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23. Accession number:  082211286199 
Title:  Research on static decoupling methods for self-developed multi-component wheel force transducer    
Authors:  Zhang, Xiaolong; Feng, Nenglian; Zhang, Weigong; Ma, Degui     
Author affiliation:  Tsinghua University, Beijing 100084, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 18-23    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Both calibration method and static decoupling algorithm were employed to analyze wheel force transducer (WFT). Firstly, the calibration procedure and extraction of sample data were presented in detail based on the self-developed hydraulic bench. Then, three decoupling methods were utilized respectively to quantify the coupling effects. The main findings are as the follows: the linearity of each main calibration channel is notable; the calculated rate of static coupling of the self-developed WFT is equal to the same-type foreign product; the least square support vector regression (LS-SVR) algorithm owns the characteristics of high regression precision, outstanding generalization and excellent algorithm stability; the method to modify the algorithm of the standard OLS-RBF NN (orthogonal least square radial-basis-function neural network) improves the regression performance significantly.    
Number of references:  6    
Ei main heading:  Loads (forces)    
Ei controlled terms:  Algorithms  -  Automobiles  -  Neural networks  -  Support vector machines  -  Transducers  -  Vehicle wheels     Uncontrolled terms:  Static decoupling  -  Wheel force transducer  -  Multicomponent coupling  -  Least square support vector machine  -  Hydraulic bench    
Ei classification codes:  421 Strength of Building Materials; Mechanical Properties  -  601.2 Machine Components  -  662.1 Automobiles  -  723.4 Artificial Intelligence  -  732.2 Control Instrumentation    
Treatment:  Applications (APP)    
Database:  Compendex
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24. Accession number:  082211286200
Title:  Numerical simulation of cylinder non-circular thermal deformation considering flow of cooling water    
Authors:  Wang, Hu; Gui, Changlin; Zhao, Xiaoyong     
Author affiliation:  Hefei University of Technology, Hefei 230009, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 24-29    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Based on conjugate heat transfer method, the influence of coolant flow on temperature distribution of cylinder block-cooling water coupling model and thermal deformation of the cylinder liners were calculated on the results of CFD analysis for the whole cooling water system by using commercial software ANSYS. The flow and pressure filed of the whole cooling system, the temperature distribution of the coupling model and thermal deformation of the cylinder liners were demonstrated, which showed that the temperature and thermal deformation had remarkable changes along axial and circumferential direction, and these also provided theoretical evidence for failure simulation and optimization design of diesel engine.    
Number of references:  11    
Ei main heading:  Temperature distribution    
Ei controlled terms:  Computational fluid dynamics  -  Computer simulation  -  Cooling water  -  Deformation  -  Diesel engines  -  Engine cylinders  -  Heat transfer     Uncontrolled terms:  Conjugate heat transfer  -  Numerical simulation  -  Software ANSYS  -  Cylinder liners  -  Thermal deformation  -  Failure simulation    
Ei classification codes:  421 Strength of Building Materials; Mechanical Properties  -  612.2 Diesel Engines  -  616 Heat Exchangers  -  641.1 Thermodynamics  -  641.2 Heat Transfer  -  723.5 Computer Applications    
Treatment:  Applications (APP)    
Database:  Compendex
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25. Accession number:  082211286201
Title:  Optimization of fuel supply map during start process controlled diesel engine under condition of intake preheating    
Authors:  Liang, Jinguang; Yu, Xiumin; Gao, Yue; Wang, Yunkai; Yu, Hongyang     
Author affiliation:  Jilin University, Changchun 130025, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 30-33    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Tests were done to research the influence of intake preheating during start process for electronic controlled diesel engine by using the electronic controlled diesel engine which was combined with VP37 electronic controlled distributor type injection pump management system and VS100 demarcate system. Tests were done to research the end symbol rotate speed of start, which influenced the performance of electronic control diesel engine during start process. Optimization process of fuel supply map during start process was drawn under the condition of intake preheating through the tests. The conclusion was also reached--the limit data of engine's speed increased during the period between end of start phases and effective terminal of start fuel supply map was decided by the engine's inherent characteristic.    
Number of references:  5    
Ei main heading:  Starting    
Ei controlled terms:  Diesel engines  -  Fuel oils  -  Optimization  -  Preheating  -  Testing     Uncontrolled terms:  Electronically controlled diesel engine  -  Fuel supply map  -  Intake preheating  -  Electronic controlled distributor VP37  -  Demarcate system VS100  -  Symbol rotate speed  -  Performance    
Ei classification codes:  422.2 Test Methods  -  523 Liquid Fuels  -  612.2 Diesel Engines  -  642.1 Process Heating  -  661.1 Automotive Engines    
Treatment:  Experimental (EXP)    
Database:  Compendex
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26. Accession number:  082211286202
Title:  Dynamic acquisition of in-cylinder pressure based on DSP in diesel engine    
Authors:  Wang, Jun; Zhang, Youtong; Wang, Xiancheng; Yang, Xia     
Author affiliation:  Academy of Armored Forces Engineering, Beijing 100072, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 34-38    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: In order to meet the demand of dynamic acquisition in diesel engine, study on dynamic acquisition of cylinder pressure based on digital signal processor (DSP) was conducted. The acquisition method and data process, data communication of dynamic acquisition were proposed, partial acquisition area between 50°CA( crank angle) before top dead center (TDC) and 100°CA after TDC has been presented. Digital signal processor (DSP) and high speed USB (universal serial bus) were introduced into dynamic acquisition, hardware and software for dynamic acquisition system have been designed. The bench test for acquisition performance and stability of this system was finished. Test result showed that dynamic acquisition system of cylinder pressure based on DSP could meet the requirement of diesel engine.    
Number of references:  7    
Ei main heading:  Pressure    
Ei controlled terms:  Computer software  -  Data acquisition  -  Design  -  Diesel engines  -  Digital signal processors  -  Engine cylinders     Uncontrolled terms:  Cylinder pressure  -  Dynamic acquisition  -  Data communication  -  Universal serial bus (USB)  -  Top dead center (TDC)    
Ei classification codes:  612.1.1 Internal Combustion Engine Components  -  612.2 Diesel Engines  -  723.2 Data Processing and Image Processing  -  931.1 Mechanics    
Treatment:  Applications (APP)    
Database:  Compendex
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27. Accession number:  082211286215
Title:  Design and test of on-line measurement system for the moisture content of the freeze-drying materials    
Authors:  Cui, Qingliang; Guo, Yuming; Zheng, Decong     
Author affiliation:  Shanxi Agricultural University, Taigu 030801, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 91-96    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Based on virtual instrument, the on-line moisture content measurement system was designed, and the measurement condition of the JDG0.2 vacuum freeze-drying machine was considered during the system development. The system can realize real-time data acquisition, calculation and storage. It can also display the weight, moisture content and the rate of the moved water in the samples. Moreover, the change curve of the moisture content and the rate of the moved water can be shown in this system. The result showed that the relative error to the weight of the samples is less than 0.5%, and the absolutely error to the moisture content is less than 0.5%, which achieved the requirement of the on-line monitoring.    
Number of references:  16    
Ei main heading:  Moisture    
Ei controlled terms:  Agricultural products  -  Calculations  -  Data acquisition  -  Drying  -  Errors  -  Freezing  -  Measurements  -  Monitoring  -  Online systems  -  Real time systems   -  Storage (materials)     Uncontrolled terms:  Online measurement system  -  Freeze drying materials  -  Moisture content  -  Rate of moved water  -  Vacuum freeze drying machine    
Ei classification codes:  694.4 Storage  -  722.4 Digital Computers and Systems  -  723.2 Data Processing and Image Processing  -  801.4 Physical Chemistry  -  821.4 Agricultural Products  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments    
Treatment:  Applications (APP)    
Database:  Compendex
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28. Accession number:  082211286216
Title:  Optimization of determination for pesticide residues in vegetables    
Authors:  Wang, Xiaoyu; Wang, Xiangyou; Sun, Xia; Sun, Dongxia     
Author affiliation:  Shandong University of Technology, Zibo 255049, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 97-100    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: The optimization of determination for organophosphate pesticide residues in vegetables was studied. In the promise of higher sensitivity, a new low cost reagent components, whose dosage of acetylcholinesterase (AChE), substrate and chromogenic reagent were 3/4, 3/4 and 1/2 that of original components respectively, thus saved cost of reagent. The result was achieved through contrastive test. F-test proved that there was no significant difference between adjusted components and original components. The lower limit of determination of adjusted components to three pesticides is omethoate 0.37 mg/L, trichlorphon 0.09 mg/L, dichlorvos 0.035 mg/L, which is consistent with those of national standard rapid determination method.    
Number of references:  7    
Ei main heading:  Pesticides    
Ei controlled terms:  Cost reduction  -  Optimization  -  Organic compounds  -  Phosphorus compounds  -  Standards  -  Substrates  -  Testing     Uncontrolled terms:  Pesticide residues  -  Vegetables  -  Determination  -  Organophosphate  -  Acetylcholinesterase (AChE)  -  Dosage  -  Chromogenic reagent  -  Lower limit  -  Omethoate  -  Trichlorphon   -  Dichlorvos  -  Detection    
Ei classification codes:  422.2 Test Methods  -  804.1 Organic Compounds  -  821.2 Agricultural Chemicals  -  902.2 Codes and Standards  -  912.2 Management  -  921.5 Optimization Techniques    
Treatment:  Applications (APP)    
Database:  Compendex
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29. Accession number:  082211286232
Title:  Research on error compensation of multi-joint ultrasonic robot based on ontology    
Authors:  Zheng, Huifeng; Zhou, Xiaojun; Li, Xiongbing     
Author affiliation:  Zhejiang University, Hangzhou 310027, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 164-167    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: For the high need of direction aiming at ultrasonic testing, especially the test of surface work-pieces, it is necessary to make error compensation to improve the test accuracy. The kinematics analysis of ultrasonic robot was firstly done, then the principle and compensation model of multi-joint error compensation was expatiated though the analysis of sources and traits of the pose error. Finally the example was given to validate the error compensation method, by which the continuous ultrasonic test for curve surface was realized by exact control parameters.    
Number of references:  6    
Ei main heading:  Error compensation    
Ei controlled terms:  Industrial robots  -  Kinematics  -  Ontology  -  Ultrasonic testing     Uncontrolled terms:  Surface workpieces  -  Curve surface  -  Multijoint error compensation  -  Control parameters    
Ei classification codes:  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  731.6 Robot Applications  -  753.3 Ultrasonic Applications  -  931.1 Mechanics    
Treatment:  Applications (APP)    
Database:  Compendex
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30. Accession number:  082211286231
Title:  Analysis on probability design for the properties of diaphragm spring    
Authors:  Lou, Yuehai; Gao, Xiang     
Author affiliation:  Zhejiang Institute of Mechanical and Electrical Engineering, Hangzhou 310053, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 160-163 156    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: As a key part of diaphragm spring clutch, diaphragm spring determines the load characteristics of the clutch by its load-distortion properties that are sensitive to the dimension of diaphragm spring. In order to predict or determine the probability of normal performance under desired working condition to control qualified rate of products, calculus of probability model for load-distortion properties of diaphragm spring by means of mathematical statistics was established. Based on the model, the standard deviation was calculated by applying normal distribution algebra, first order second moment method and Monte Carlo simulation. The standard deviation is relatively less by normal distribution algebra; bigger by first order second moment method, and fluctuant along with false random sample by Monte Carlo simulation. These three methods all satisfied design precision of automobile clutch diaphragm spring.    
Number of references:  5    
Ei main heading:  Springs (components)    
Ei controlled terms:  Algebra  -  Clutches  -  Diaphragms  -  Loads (forces)  -  Monte Carlo methods  -  Normal distribution  -  Probability  -  Statistical methods     Uncontrolled terms:  Diaphragm spring  -  Probability design  -  Load distortion properties  -  Qualified rate    
Ei classification codes:  421 Strength of Building Materials; Mechanical Properties  -  601.2 Machine Components  -  602.2 Mechanical Transmissions  -  921.1 Algebra  -  922.1 Probability Theory  -  922.2 Mathematical Statistics    
Treatment:  Applications (APP)    
Database:  Compendex 
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31. Accession number:  082211286234
Title:  Experimental investigation on the flow drag reduction characteristics of the hydrophobic surface    
Authors:  Li, Gang; Zhou, Ming; Cai, Lan; Li, Jian; Ye, Xia     
Author affiliation:  Jiangsu University, Zhenjiang 212013, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 172-174 171    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: The micrometer-scaled channels with different width and depth on the Si surface were prepared by femtosecond laser ablation. The relationship between the hydrophobicity and flow drag reduction has been studied through the measurement of water contact angle (WCA) and rheological characteristic experiment after the samples were made hydrophobic through a chemical reaction with an organosilane. It is found in the experiment that the bigger the WCA or the more hydrophobic water is, the more remarkable the effects of drag reduction would be. Accordingly, the certain-extent-controllable hydrophobicity of solid surface could be prepared by the laser ablation and also the characteristics of drag reduction would be controlled.    
Number of references:  5    
Ei main heading:  Hydrophobicity    
Ei controlled terms:  Contact angle  -  Drag reduction  -  Laser ablation  -  Silanes  -  Silicon  -  Surfaces     Uncontrolled terms:  Rheological characteristic  -  Water contact angle (WCA)  -  Organosilane  -  Solid surface    
Ei classification codes:  631.1 Fluid Flow, General  -  712.1.1 Single Element Semiconducting Materials  -  744.8 Laser Beam Interactions  -  804.1 Organic Compounds  -  931.2 Physical Properties of Gases, Liquids and Solids    
Treatment:  Applications (APP)    
Database:  Compendex
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32. Accession number:  082211286203
Title:  Optimization study on power system configuration for fuel cell hybrid vehicle    
Authors:  Li, Yufang; Lin, Yi; He, Hongwen     
Author affiliation:  Beijing Institute of Technology, Beijing 100081, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 39-42    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract:  Based on vehicle model of Advisor simulation platform, a combined optimization method of power configuration for fuel cell hybrid electric vehicles was presented, namely both power size and control parameters of the energy component were taken as design variable simultaneously with fuel economy of specific driving cycle as optimization target. Finally this method was used to configure one certain fuel cell hybrid bus for analyzing and its validation.    
Number of references:  6    
Ei main heading:  Electric vehicles    
Ei controlled terms:  Buses  -  Fuel cells  -  Fuel economy  -  Optimization     Uncontrolled terms:  Advisor simulation platform  -  Hybrid power system  -  Power configuration  -  Control parameters  -  Energy component  -  Hybrid vehicle    
Ei classification codes:  521 Fuel Combustion and Flame Research  -  663.1 Heavy Duty Motor Vehicles  -  702.2 Fuel Cells  -  921.5 Optimization Techniques    
Treatment:  Applications (APP)    
Database:  Compendex
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33. Accession number:  082211286233  
Title:  Variable parameter compound chaotic system method and its application to mechanism synthesis    
Authors:  Luo, Youxin; Li, Dazhi     
Author affiliation:  Hu'nan University of Arts and Science, Changde 415000, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 168-171    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: After investigating the characteristic of variable parameter compound chaotic system, the method to produce compound chaotic system with variable parameter was introduced and compound chaotic system with more Lyapunov exponent to chaotic system with parameter was produced. Newton optimization iteration methods that based on variable parameter compound chaotic system was combined with mechanism synthesis theory, and then the solving method of mechanism synthesis problem based on variable parameter compound chaotic system was put forward. As an example, the problem of function generation for planar four-link mechanism was considered for synthesis and approximate synthesis at given positions. This made multi-projects selecting possible. The method is adaptive to planar multi-linkage and special mechanism.    
Number of references:  16    
Ei main heading:  Mechanisms    
Ei controlled terms:  Algorithms  -  Chaotic systems  -  Iterative methods  -  Newton-Raphson method  -  Optimization     Uncontrolled terms:  Planar four link mechanism  -  Compound chaotic system  -  Variable parameter  -  Approximation synthesis  -  Multiprojects selecting    
Ei classification codes:  601.3 Mechanisms  -  921.5 Optimization Techniques  -  921.6 Numerical Methods  -  961 Systems Science    
Treatment:  Applications (APP)    
Database:  Compendex
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34. Accession number:  082211286204
Title:  Study on the relationship among different expressive values of diesel engine smog emission    
Authors:  Zhang, Zhaohe; Ren, Lijuan; Wang, Shufen     
Author affiliation:  Harbin Institute of Technology, Weihai 264209, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 43-46    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Relationships among the three expressive values of diesel engine smog emission, such as Bosch smog value, extinction coefficient value and smog mass concentration value, were established by means of mathematical analysis method. Every two expressive values have higher relativity. In order to validate the calculation accuracy, the smog emission of three kinds of automotive diesel engines was tested. The comparative results of experiment and calculation showed that the formulas used to make calculation between Bosch smog value and extinction coefficient value are able to get a high accuracy. When diesel engine operates at higher load operating condition, the particulate matter emission can be calculated accurately by the formula between Bosch smog value and particulate matter concentration, but there is some calculation error as the engine load is lower. At lighter load operating condition of diesel engine, there is a lot of soluble organic fraction in particulate matter, but Bosch smog meter is only able to measure the black degree of filter paper.    
Number of references:  6    
Ei main heading:  Exhaust gases    
Ei controlled terms:  Calculations  -  Concentration (process)  -  Diesel engines  -  Experiments  -  Mathematical techniques  -  Organic compounds  -  Particulate emissions     Uncontrolled terms:  Mathematical analysis method  -  Bosch smog value  -  Extinction coefficient value  -  Smog mass concentration value    
Ei classification codes:  451.1 Air Pollution Sources  -  612.1 Internal Combustion Engines, General  -  612.2 Diesel Engines  -  804.1 Organic Compounds  -  921 Mathematics    
Treatment:  Applications (APP); Experimental (EXP)    
Database:  Compendex 
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35. Accession number:  082211286217
Title:  Preparation and swelling behavior of grafting copolymer HEC-g-PAA    
Authors:  Zhao, Yanyan; Jiang, Shaotong     
Author affiliation:  Hefei University of Technology, Hefei 230009, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 101-103    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Grafting sodium polyacrylate onto hydroxyethyl cellulose (HEC-g-PAA) has been carried out by using microwave method. The effect of the reaction conditions such as the concentration of initiator, the neutralization degree of the acrylic acid and the amount of monomer on the percentage of grafting and absorbency have been studied. The swelling behavior of HEC-g-PAA which have different sizes were discussed. The results were analyzed in terms of the non-Fickian equation; the result showed that relaxation contribution is the main cause in absorbing process.    
Number of references:  8    
Ei main heading:  Graft copolymers    
Ei controlled terms:  Concentration (process)  -  Initiators (chemical)  -  Monomers  -  Swelling     Uncontrolled terms:  Grafting sodium polyacrylate  -  Hydroxyethyl cellulose  -  Microwave method  -  Neutralization degree  -  Acrylic acid  -  Relaxation contribution  -  Amount of monomer  -  Grafting  -  Absorbency  -  Percentage    
Ei classification codes:  802.3 Chemical Operations  -  803 Chemical Agents and Basic Industrial Chemicals  -  815.1 Polymeric Materials  -  951 Materials Science    
Treatment:  Applications (APP)    
Database:  Compendex
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36. Accession number:  082211286218
Title:  Application of DOSC in detection of volatile oil content from Zanthoxylum bungeagum maxim by near-infrared spectroscopy technique    
Authors:  Zhu, Shiping; Wang, Gang; Yin, Xiong; Lan, Xuedong; Ren, Deqi     
Author affiliation:  Chongqing University, Chongqing 400030, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 104-107    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Based on near infrared spectroscopy technique and partial least squares (PLS), calibration model of volatile oil content of 141 powder samples with particle size of 40 meshes was established to classify Zanthoxylum bungeagum Maxim more rapidly. After spectra were preprocessed by direct orthogonal signal correction (DOSC), the determination coefficient (R2) increased from 0.936 to 0.95 and the root mean square error of cross validation (RMSECV) decreased from 0.421 to 0.374. Applying the model established by 105 samples to the test set with 36 samples, R2 increased from 0.923 to 0.969, the root mean square error of prediction (RMSEP) decreased from 0.452 to 0.289, RPD increased from 3.622 to 5.573 and RSD decreased from 11.65% to 7.44% after spectra were preprocessed by DOSC. The research indicated that the model preprocessed by DOSC is better, and the precision of model got higher. The result showed that rapid detection of volatile oil content in Zanthoxylum bungeagum Maxim by NIR and DOSC is feasible and efficient.    
Number of references:  19    
Ei main heading:  Volatile organic compounds    
Ei controlled terms:  Near infrared spectroscopy  -  Particle size  -  Powders  -  Spectrum analysis     Uncontrolled terms:  Direct orthogonal signal correction (DOSC)  -  Volatile oil content  -  Zanthoxylum bungeagum Maxim  -  Rapid detection    
Ei classification codes:  741.3 Optical Devices and Systems  -  804.1 Organic Compounds  -  931.2 Physical Properties of Gases, Liquids and Solids  -  941 Acoustical and Optical Measuring Instruments    
Treatment:  Applications (APP)    
Database:  Compendex
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37. Accession number:  082211286235 
Title:  Research progress and prospect for image recognition of stored-grain pests    
Authors:  Mao, Hanping; Zhang, Hongtao     
Author affiliation:  Jiangsu University, Zhenjiang 212013, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 175-179 186    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: The detection system for stored-grain pests based on image processing technology has many advantages of rapidness, accuracy, visualization and etc. In order to take full advantages of the foreign and native research findings, improve its research and application in this field in China, the research progress of automatic recognition for stored-grain pests outside and inside grain kernels was summarized by utilizing computer image processing technology based on three methods, such as visible image, near infrared image and soft X-ray. The superiority and inferiority of each method was analyzed. Further key research work from five aspects was presented, such as new feature extraction, recognition of live and dead pests, detection of early pest infestation, dynamic image technique, development of automatic separating and transmitting machine, so the automatic detection of stored-grain pests could be actualized.    
Number of references:  33    
Ei main heading:  Image processing    
Ei controlled terms:  Computer applications  -  Feature extraction  -  Grain (agricultural product)  -  Image recognition  -  Infrared imaging  -  Pest control  -  Visualization  -  X rays     Uncontrolled terms:  Stored grain pests  -  Detection  -  Visible light  -  Near infrared reflectance  -  Soft X ray  -  Live pests  -  Dead pests  -  Pest infestation  -  Dynamic image  -  Automatic recognition    
Ei classification codes:  461.9 Biology  -  723.2 Data Processing and Image Processing  -  723.5 Computer Applications  -  821.4 Agricultural Products  -  902.1 Engineering Graphics    
Treatment:  General review (GEN)    
Database:  Compendex 
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38. Accession number:  082211286219
Title:  Response of coronary spectrum on chlorophyll and K information of soy    
Authors:  Qiao, Xin; Ma, Xu; Zhang, Xiaochao; Liang, Liusuo     
Author affiliation:  Jilin University, Changchun 130025, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 108-111 116    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: The soy was taken as the investigative object and the red edge spectral reflectivity was simulated by inverted Gaussian model. The red edge swing (Dλred) was gained after differential coefficient original spectrum and SWeibull model to estimate chlorophyll has been set up. The correlative coefficient was 0.7812. At the same time the multivariate un-linear regression equation between TK content and absorption depth parameters were obtained by the method of continuum removal with their correlative coefficient of 0.7625. It is proved that the possibility of forecast plants' nutrition status by the least spectral data within given wave band and the theory also provided a foundational consult to exploit on-line detecting nutrition and variable fertilization in the fields.
Number of references:  12    
Ei main heading:  Potassium    
Ei controlled terms:  Chlorophyll  -  Food products  -  Measurements  -  Nutrition  -  Online systems  -  Spectrum analysis     Uncontrolled terms:  Potassium information  -  Soybean  -  Canopy spectral reflectance  -  Continuum removal  -  Potassium content  -  Absorption depth parameters  -  Multivariate unlinear regression equation    
Ei classification codes:  549.1 Alkali Metals  -  722.4 Digital Computers and Systems  -  804.1 Organic Compounds  -  822.3 Food Products  -  941 Acoustical and Optical Measuring Instruments    
Treatment:  Applications (APP)    
Database:  Compendex
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39. Accession number:  082211286220
Title:  Design and evaluation software for precision farm land levelling engineering    
Authors:  Li, Yinong; Xu, Di; Li, Fuxiang     
Author affiliation:  National Center of Efficient Irrigation Engineering and Technology Research, Beijing 100044, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 112-116    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: A design and evaluation software for precision farm land levelling engineering was developed with the application of modified plane method. The software has different functions such as farm land elevation data input and statistic analysis, description of microtopography conditions as well as estimation of earthwork. The application effects of three different interpolated methods on software were evaluated based on field data. The results showed that three interpolated methods could be used to produce grid elevation data in farm land and give out the general description of surface condition. However, the Kriging interpolated method gave out the best estimations for both grid elevation data and the earthwork volume. It is suggested that the Kriging interpolated method is applied in designing for farm land precision land levelling engineering.    
Number of references:  9    
Ei main heading:  Computer software    
Ei controlled terms:  Agricultural engineering  -  Design  -  Estimation  -  Farms  -  Interpolation  -  Optimization     Uncontrolled terms:  Precision farm land levelling  -  Farm land elevation data input  -  Statistic analysis  -  Microtopography conditions  -  Earthwork    
Ei classification codes:  723 Computer Software, Data Handling and Applications  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  921.5 Optimization Techniques  -  921.6 Numerical Methods    
Treatment:  Applications (APP)    
Database:  Compendex
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40. Accession number:  082211286221
Title:  Character of water demand and yield of space-time deficit irrigation for hot pepper in greenhouse    
Authors:  Shao, Guangcheng; Liu, Na; Chen, Lei     
Author affiliation:  Hohai University, Nanjing 210098, China    
Serial title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title:  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 117-121    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: Based on field experimental data gained at automatization greenhouse in water-saving park of Hohai University, character of water demand and yield of space-time deficit irrigation for hot pepper in greenhouse was studied. The results indicated that soil water content at two sides of furrow fluctuated with the introduction of the alternate partial root-zone irrigation during regulated deficit irrigation at some stage of hot pepper, which could enhance the adsorptive ability of root system. Under the condition of abundant water supplying, the maximum water consumption was at vigorous growing stage, followed by seedling stage and bloom and fruit setting stage, relatively small at later fruit-bearing stage, which respectively accounted for 39.96%, 22.91%, 19.34% and 17.19% of total water consumption. The effects of drought stress and irrigation model at different growing stages on evapotranspiration were significant. In order to attain high yield and high water use efficiency (WUE), moderate uniform deficit irrigation should be introduced to two sides of root-zone at seeding stage, re-water at bloom and fruit setting stages, uniform deficit irrigation and alternate partial root-zone irrigation should be adopted at vigorous growing stage and later fruit-bearing stage, respectively.    
Number of references:  7    
Ei main heading:  Irrigation    
Ei controlled terms:  Efficiency  -  Evapotranspiration  -  Greenhouses  -  Water     Uncontrolled terms:  Hot pepper  -  Alternate partial root zone irrigation  -  Regulated deficit irrigation  -  Character of water demand  -  Yield  -  Soil water content  -  Water saving  -  Water consumption  -  Water use efficiency (WUE)    
Ei classification codes:  444 Water Resources  -  821.3 Agricultural Methods  -  821.6 Farm Buildings and Other Structures  -  913.1 Production Engineering    
Treatment:  Applications (APP)    
Database:  Compendex
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41. Accession number:  082211286222
Title:  Orientation compensation method based on load characteristics for AGV    
Authors:  Lin, Yizhong; Wang, Xinhua; Chen, Yuanling; Huang, Yumei     
Author affiliation:  Guangxi University, Nanning 530004, China    
Serial title::  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery     Abbreviated
Serial title::  Nongye Jixie Xuebao    
Volume:  v 39    
Issue:  n 4    
Issue date:  April 2008    
Publication year:  2008    
Pages:  p 122-124 121    
Language:  Chinese    
ISSN:  1000-1298    
CODEN:  NUYCA3    
Document type:  Journal article (JA)    
Publisher:  Chinese Society of Agricultural Machinery, Beijing, 100083, China    
Abstract: A simple and practical method to measure the load of AGV(automated guided vehicle), which calculated the additional torque of the load through measuring longitudinal obliquity of AGV, was adopted. Dynamic theoretical analysis and mathematical model on a two-wheel-driven AGV have been completed. By experimental researches in working place, the compensation coefficient and the relationship between orientation angle and additional torque were obtained. The test results showed that trace tracking errors of AGV brought by longitudinal unsymmetrical loads could be eliminated to some extent by using this method.    
Number of references:  5    
Ei main heading:  Steering    
Ei controlled terms:  Dynamics  -  Loads (forces)  -  Mathematical models  -  Measurements  -  Torque  -  Vehicles     Uncontrolled terms:  Automated guided vehicle (AGV)  -  Additional torque  -  Orientation angle  -  Compensation coefficient  -  Obliquity measurement  -  Orientation compensation    
Ei classification codes:  432 Highway Transportation  -  662.4 Automobile and Smaller Vehicle Components  -  921 Mathematics  -  931.1 Mechanics  -  931.2 Physical Properties of Gases, Liquids and Solids    
Treatment:  Applications (APP)    
Database:  Compendex
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