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2009年第40卷第6期共收錄46篇
4. Accession number:  20092912201643
  Title:  Intelligent grading of flue-cured tobacco leaves based on rough set theory
  Authors:  Tan, Xu1 ; Tang, Yunlan2 ; Chen, Yingwu2 
  Author affiliation:  1  Department of Computer Application, Shenzhen Institute of Information Technology, Shenzhen 518029, China
  2 College of Information Systems and Management, National University of Defense Technology, Changsha 410073, China
  Corresponding author:  Tan, X. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  169-174
  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: Aiming at grading flue-cured tobacco leaves, an intelligent method based on rough set theory was proposed. Traditional rough set theory was generalized for the characteristics of flue-cured tobacco leaves' grading, and relevant algorithms of discretization and attribute reduction based on rough set theory were also given. In order to obtain knowledge with reasonable granularity, a two-level reasoning model that consists of grouping and grading was constructed. By parallel grouping according to leaves' positions and colors based on chemical compounds, inference rules and importance degree of each chemical compound can be obtained. Then, through multi-attribute evaluation found on the importance degree and the group inferred from the rules, final grade of the given flue-cured tobacco leaf was determined. Experiment results prove that this method is effective and credible, and has advantages over the previously proposed methods.
  Number of references:  19
  Main heading:  Rough set theory
  Controlled terms:  Chemical compounds  -  Chemicals  -  Curing  -  Flues  -  Fuzzy sets  -  Grading  -  Tobacco
  Uncontrolled terms:  Attribute reduction  -  Discretization  -  Flue-cured tobacco  -  Flue-cured tobacco leaf  -  Inference rules  -  Intelligent method  -  Multi-attribute  -  Reasoning models  -  Rough set
  Classification code:  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory  -  804.2 Inorganic Compounds  -  815.1 Polymeric Materials  -  818.3 Rubber and Elastomer Processing  -  821.4 Agricultural Products  -  913.3 Quality Assurance and Control  -  921 Mathematics  -  804.1 Organic Compounds  -  803 Chemical Agents and Basic Industrial Chemicals  -  802.2 Chemical Reactions  -  614.1 Steam Power Plant Design and Construction  -  521 Fuel Combustion and Flame Research  -  402.1 Industrial and Agricultural Buildings  -  804 Chemical Products Generally
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

 5. Accession number:  20092912201613
  Title:  Forced control of hydraulically driven system for hydro-pneumatic suspension testing
  Authors:  Zhang, Hui1 ; He, Jingfeng1 ; Han, Junwei1 
  Author affiliation:  1  School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
  Corresponding author:  Zhang, H. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  23-27
  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 mathematic model of electro-hydraulic servo driving force control system for a heavy vehicle hydro-pneumatic suspension was established. Through analyzing the influence of the varying stiffness of hydro-pneumatic suspension to amplitude margin and phase margin, a relationship between stiffness of the load and controller parameters was obtained. In order to improve the dynamic performance of the hydro-pneumatic suspension testing system, a two-stage correction segment was introduced which can change its gain and its turning frequency automatically according to the stiffness of the load. Simulation and experimental results both indicate the validity of the proposed control method.
  Number of references:  7
  Main heading:  Suspensions (components)
  Controlled terms:  Force control  -  Force measurement  -  Hydraulic servomechanisms  -  Hydraulics  -  Load testing  -  Pneumatic control  -  Stiffness
  Uncontrolled terms:  Control methods  -  Controller parameter  -  Driven system  -  Driving force control  -  Dynamic performance  -  Electro-hydraulic servo system  -  Electrohydraulic servos  -  Heavy vehicle  -  Hydro-pneumatic suspension  -  Mathematic model   -  Phase margins  -  Two stage  -  Varying stiffness
  Classification code:  951 Materials Science  -  943.2 Mechanical Variables Measurements  -  732.1 Control Equipment  -  731.3 Specific Variables Control  -  731.1 Control Systems  -  632.3 Pneumatics  -  632.2 Hydraulic Equipment and Machinery  -  632.1 Hydraulics  -  601.2 Machine Components  -  483.1 Soils and Soil Mechanics  -  422.2 Test Methods  -  422 Strength of Building Materials; Test Equipment and Methods  -  421 Strength of Building Materials; Mechanical Properties
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

6. Accession number:  20092912201637
  Title:  Review of antimicrobial food packaging
  Authors:  Lü, Fei1 ; Ye, Xingqian1 ; Liu, Donghong1 
  Author affiliation:  1  School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310029, China
  Corresponding author:  Liu, D. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  138-142
  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:  Food packaging is important for food safety, shelf-life extension, cost-efficiency, environmental issues, and consumer convenience. In order to improve the performance of food packaging, active packaging is being developed. Antimicrobial packaging, a form of active packaging, is an extremely challenging technology that could control the microbial population and target specific microorganisms to provide higher safety and longer shelf-life food. The characteristics of different types of antimicrobial packaging systems, and their research and application are reviewed. The antimicrobials including inorganic, organic and natural antimicrobials in the antimicrobial packaging systems are reviewed. In the end, the future trends of antimicrobial packaging are described.
  Number of references:  33
  Main heading:  Packaging machines
  Controlled terms:  Microorganisms
  Uncontrolled terms:  Active packaging  -  Antimicrobial packaging  -  Antimicrobials  -  Food  -  Food microbiology
  Classification code:  461.9 Biology  -  694.3 Packaging Equipment  -  801.2 Biochemistry
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

21. Accession number:  20092912201639
  Title:  Virtual reality technology of ultra-low altitude UAV
  Authors:  Yuan, Yanwei1 ; Zhang, Xiaochao1 ; Mao, Wenhua1 ; Zhao, Huaping1 
  Author affiliation:  1  Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
  Corresponding author:  Zhang, X. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  147-152
  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 control the take-off, landing and flying of ultra-low altitude UAV remotely, navigation and control methods were studied with virtual reality technology. With the aid of Multigen Creator, we built 3-D model of UAV, generated terrain by DEM data, and studied drive technology. According to the parameters from GPS receiver and other sensors fixed on the UAV, the 3-D model and scenes were derived. Meanwhile, feed back signal was given to adjust the plane's gesture to insure the plane to fly along the route. GIS technology was used to display the UAV trace in digital map. Virtual experiment shows the feasibility of navigation and control of ultra-low altitude UAV.
  Number of references:  14
  Main heading:  Unmanned aerial vehicles (UAV)
  Controlled terms:  Global positioning system  -  Navigation  -  Technology  -  Three dimensional  -  Virtual reality
  Uncontrolled terms:  3D models  -  Digital map  -  GIS technology  -  GPS receivers  -  Low altitudes  -  Multigen creator  -  Navigation and control  -  OpenGL  -  Ultra-low altitude UAV  -  Virtual experiments   -  Virtual reality technology
  Classification code:  943.3 Special Purpose Instruments  -  902.1 Engineering Graphics  -  901 Engineering Profession  -  723.5 Computer Applications  -  723 Computer Software, Data Handling and Applications  -  716.3 Radio Systems and Equipment  -  655.2.1 Communication Satellites  -  655.1 Spacecraft, General  -  652.1 Aircraft, General  -  434.4 Waterway Navigation  -  431.5 Air Navigation and Traffic Control
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.
 

22. Accession number:  20092912201651
  Title:  Simulation study on the dry friction characteristics of metallic materials based on test
  Authors:  Lin, Qiong1, 2 ; Hao, Zhiyong2 ; Liu, Yuheng2 
  Author affiliation:  1  College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
  2  Department of Mechanical and Energy Engineering, Zhejiang University, Hangzhou 310027, China
  Corresponding author:  Hao, Z. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  208-211
  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 test apparatus of metal's dry friction characteristic was built to measure the dry friction hysteresis characteristic curve of metallic material specimens under given normal force. A corresponding MSC/MARC finite element model is developed to simulate the friction stick-slip hysteresis characteristic of contact dry friction for any prescribed quasistatic load cycle. Comparisons of test data and simulation data demonstrate the accuracy of the FEM model. The simulation result is consistent with the test and theory data which can help analyzing the material's dry friction characteristic of real project and provide the reliable computation for the NVH simulation of engine.
  Number of references:  8
  Main heading:  Tribology
  Controlled terms:  Curing  -  Friction  -  Hysteresis  -  Materials  -  Simulators  -  Slip forming  -  Testing
  Uncontrolled terms:  Dry friction  -  FEM models  -  Finite element models  -  Hysteresis characteristics  -  Metallic material  -  Metallic materials  -  Normal forces  -  Quasi-static loads  -  Real projects  -  Simulation   -  Simulation data  -  Simulation result  -  Simulation studies  -  Stick-slip  -  Test  -  Test apparatus  -  Test data
  Classification code:  701.2 Magnetism: Basic Concepts and Phenomena  -  802.2 Chemical Reactions  -  815.1 Polymeric Materials  -  818.3 Rubber and Elastomer Processing  -  931 Classical Physics; Quantum Theory; Relativity  -  931.1 Mechanics  -  931.2 Physical Properties of Gases, Liquids and Solids  -  951 Materials Science  -  961 Systems Science  -  671 Naval Architecture  -  405.2 Construction Methods  -  412 Concrete  -  422.2 Test Methods  -  423.2 Test Methods  -  621 Nuclear Reactors  -  654.1 Rockets and Missiles  -  655.2 Satellites  -  657.1 Solar Energy and Phenomena  -  662.1 Automobiles
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

31. Accession number:  20092912201641
  Title:  Detection of stubble row and inter-row line for computer vision guidance in no-till field
  Authors:  Wang, Xiaoyan1 ; Chen, Yuan1 ; Chen, Bingqi1 ; Li, Hongwen1 ; Sun, Hao1 
  Author affiliation:  1  College of Engineering, China Agricultural University, Beijing 100083, China
  Corresponding author:  Li, H. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  158-163
  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 residue blockage to the soil engaging parts is one of the key problems affecting the performances of no-till planter and other machine working in conservation tillage farming. Visual guidance system was studied to guide the machine working in between the stubble rows thus to solve the blockage problem in standing stubble conditions. The maize stubble rows were detected by image processing and the saturation of the field image was selected to segment the dry stubble and soil surface background. By comparing different methods of determining threshold, the iterative method was proved to be the most effective to segment the image automatically. The improved Hough transform was used to detect the inter-row line and the stubble row line to guide the machine. The experiments with large number of field images showed that the algorithm proposed can obtain the target navigation path rapidly within 0.1 s and accurately for most conditions of standing stubble covered field.
  Number of references:  14
  Main heading:  Agricultural machinery
  Controlled terms:  Agriculture  -  Automatic guidance (agricultural machinery)  -  Computer vision  -  Digital image storage  -  Hough transforms  -  Image segmentation  -  Soil conservation  -  Soils
  Uncontrolled terms:  Automatic guidance  -  Conservation tillage  -  Field images  -  In-between  -  Key problems  -  Machine working  -  Navigation paths  -  No-till  -  No-till planters  -  Path recognition   -  Row line  -  Soil surfaces  -  Visual guidance
  Classification code:  921.3 Mathematical Transformations  -  741.1 Light/Optics  -  741.2 Vision  -  741.3 Optical Devices and Systems  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  821.1 Agricultural Machinery and Equipment  -  821.3 Agricultural Methods  -  731.6 Robot Applications  -  723.5 Computer Applications  -  723.2 Data Processing and Image Processing  -  722.4 Digital Computers and Systems  -  722.1 Data Storage, Equipment and Techniques  -  483.1 Soils and Soil Mechanics  -  731.2 Control System Applications
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

32. Accession number:  20092912201631
  Title:  Determination of 1000-grain weight of paddy using NIRS technique
  Authors:  Chen, Kunjie1 ; Long, Jinxing1 ; Song, Liang1 ; Li, Ke1 
  Author affiliation:  1  College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
  Corresponding author:  Chen, K. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  111-115 97
  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 purpose of this study is to investigate the feasibility using near-infrared spectroscopy (NIRS) technology for determination of the 1000-grain weight of paddy. Seventy varieties of paddy samples were scanned in the NIR spectral region 4000-10000 cm-1. Ten pretreatment methods were used to process the NIR spectrums. NIR calibration models were developed by using the partial least squares (PLS) technique. The best calibration model was determined based on the highest determination coefficient (R2) of cross-validation and the lowest root mean of standard error for cross validation (RMSECV). It was shown that the best model, with the determination coefficient 0.773 and RMSECV 1.67 g, could be obtained based on the processed spectral data by the pretreatment minmax normalization in spectral range 11998.9-7497.9 6101.7-5449.8 4601.3-4246.5 cm-1. The validation results indicated that the best calibration model had correlation coefficient (r) between the NIR predicted and the actual values of 0.945 and standard prediction error (SEP) of 0.76 g, showing that the NIR technology is a potential tool to estimate the 1000-grain weight of paddy.
  Number of references:  13
  Main heading:  Infrared devices
  Controlled terms:  Calibration  -  Infrared spectroscopy  -  Infrared transmission  -  Spectroscopic analysis
  Uncontrolled terms:  1000-grain weight  -  Determination  -  NIRS  -  Paddy  -  PLS
  Classification code:  943 Mechanical and Miscellaneous Measuring Instruments  -  942 Electric and Electronic Measuring Instruments  -  941.4 Optical Variables Measurements  -  941 Acoustical and Optical Measuring Instruments  -  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  931.2 Physical Properties of Gases, Liquids and Solids  -  801 Chemistry  -  741.3 Optical Devices and Systems  -  741.1 Light/Optics  -  902.2 Codes and Standards
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

33. Accession number:  20092912201649
  Title:  Effect of machine tool errors on the tooth form of spiral bevel gears
  Authors:  Wang, Zhiyong1 ; Yu, Shuiqin1 ; Zeng, Tao1 
  Author affiliation:  1  College of Mechanical and Electrical Engineering, Central South University, Changsha 410075, China
  Corresponding author:  Wang, Z. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  199-202 207
  Language:  Chinese
  ISSN:  10001298
  CODEN:  NUYCA3
  Document type:  Journal article (JA)
  Publisher:  Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:  Based on the mathematical model for the tooth form analysis of spiral bevel gears, the tooth form errors between the theoretical tooth flank and the inaccurate one, in the normal direction of the theoretical tooth flank, were calculated by applying optimization algorithm and a new computing method. By introducing the machine setting errors and cutter parameters errors, the effect of various errors on the tooth form of spiral bevel gears was analyzed. The deviating direction from the theoretical tooth flank and the values of tooth form errors were expressed by graphics. The results provide a reference for precision design of machine tools, correction of tooth form errors and practical processing. The algorithm and analysis results are validated via experiment.
  Number of references:  8
  Main heading:  Bevel gears
  Controlled terms:  Dentistry  -  Errors  -  Machine design  -  Machine tools  -  Mathematical models
  Uncontrolled terms:  Inaccurate tooth flank  -  Machine tool errors  -  Spiral bevel gears  -  Theoretical tooth flank  -  Tooth form
  Classification code:  922.2 Mathematical Statistics  -  921 Mathematics  -  731 Automatic Control Principles and Applications  -  603.1 Machine Tools, General  -  601.2 Machine Components  -  601 Mechanical Design  -  462.3 Dental Equipment and Supplies  -  461.6 Medicine and Pharmacology  -  461.1 Biomedical Engineering
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

46. Accession number:  20092912201653
  Title:  Characteristics of a kind of variable topology structure parallel mechanisms
  Authors:  Guo, Zonghe1 ; Cui, Zhenmin2 ; Duan, Jianguo1 ; Wang, Kejie1 ; Qi, Hongliang1 
  Author affiliation:  1  School of Mechanical Engineering, Shandong University of Technology, Zibo 255049, China
  2  School of Vehicle Engineering, Shandong Transport Vocational College, Weifang 261206, China
  Corresponding author:  Guo, Z. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  218-221 226
  Language:  Chinese
  ISSN:  10001298
  CODEN:  NUYCA3
  Document type:  Journal article (JA)
  Publisher:  Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:  Several specific and feasible changing topology ways of variable topology parallel mechanism are given. The 4TPT parallel mechanism is selected for further analysis on one of the changing topology ways and a large number of symmetrical or unsymmetrical variable topology structure parallel mechanisms are obtained, which verifies the validity of the process mentioned above. And also, the characteristics of this kind of variable topology structure parallel mechanisms are explored. The results show that workspace and dexterity of type variable topology structure parallel mechanism obtained are enhanced remarkably.
  Number of references:  4
  Main heading:  Topology
  Controlled terms:  Mechanisms
  Uncontrolled terms:  Changing topology ways  -  Characteristics of mechanisms  -  Parallel mechanisms  -  Topology structure  -  Type variables  -  Unsymmetrical  -  Variable topology structure mechanisms
  Classification code:  601.3 Mechanisms  -  703.1 Electric Networks  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

 74. Accession number:  20092912201615
  Title:  Vehicle stability control system based on distributed control structure
  Authors:  Wang, Jun1 ; Li, Feiqiang1 ; Liu, Zhaodu1 ; Dong, Yiliang2 ; Zhang, Xiaolong2 
  Author affiliation:  1  School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China
  2  Automobile Engineering Research Institute of Chang'an, Chongqing 401120, China
  Corresponding author:  Wang, J. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  33-36
  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:  An analytical method for vehicle stability control system is proposed based on distributed control structure. By distributing complex control algorithm, the control system is divided into three layers, which are control analysis, control allocation and control actuation. The desired forces and yaw moment are calculated based on sliding mode control method in control analysis. Then these are allocated to proper four wheels by using nonlinear optimal theory, in which the control allocation is realized and optimized. Simulations are implemented in the virtual vehicle dynamics environment CarMaker, and the results indicate that the designed control system enhances the vehicle stability in extreme condition and reduces the driver's burden.
  Number of references:  9
  Main heading:  Control system stability
  Controlled terms:  Automobile frames  -  Control system analysis  -  Distributed parameter control systems  -  Method of moments  -  Sliding mode control  -  Stability  -  System stability  -  Vehicles  -  Virtual reality
  Uncontrolled terms:  Analytical method  -  Complex control algorithms  -  Control allocation  -  Control analysis  -  Distributed control  -  Distributed control structure  -  Extreme conditions  -  In-control  -  Nonlinear optimal  -  Sliding modes   -  Stability control  -  Three-layer  -  Vehicle dynamics  -  Vehicle stability  -  Vehicle stability control systems  -  Yaw moment
  Classification code:  961 Systems Science  -  951 Materials Science  -  931 Classical Physics; Quantum Theory; Relativity  -  921 Mathematics  -  801 Chemistry  -  731.4 System Stability  -  731.1 Control Systems  -  723 Computer Software, Data Handling and Applications  -  663.2 Heavy Duty Motor Vehicle Components  -  662.4 Automobile and Smaller Vehicle Components  -  432 Highway Transportation
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

104. Accession number:  20092912201629
  Title:  Numerical simulation on unsteady rotated flow of a vertical axis wind turbine based on moving meshes
  Authors:  Yang, Congxin1 ; Wu, Faming1 ; Zhang, Yuliang1 
  Author affiliation:  1  Wind Power Technology Center, Lanzhou University of Technology, Lanzhou 730050, China
  Corresponding author:  Yang, C. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  98-102
  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:  Numerical simulation on unsteady rotated flow of a straight-blade vertical axis wind turbine (VAWT) is done based on moving meshes by means of the software Fluent. The wake velocity and the variation of velocity at the special cross-section are obtained. The results of unsteady flow are compared with ones solved by the multiple stream-tube model, and good coincidence is obtained. The conclusion can be made that the numerical simulation on unsteady rotated flow of a straight-blade VAWT based on moving meshes can represent its flow field.
  Number of references:  14
  Main heading:  Mathematical models
  Controlled terms:  Aerodynamics  -  Computer software  -  Engines  -  Flow simulation  -  Fluid dynamics  -  Simulators  -  Unsteady flow  -  Wind power  -  Wind turbines
  Uncontrolled terms:  Moving mesh  -  Moving meshes  -  Multiple stream-tube model  -  Multiple streams  -  Numerical simulation  -  Software FLUENT  -  Tube model  -  Vertical axis wind turbine  -  Vertical axis wind turbines  -  Wake velocity
  Classification code:  655.2 Satellites  -  657.1 Solar Energy and Phenomena  -  662.1 Automobiles  -  931.1 Mechanics  -  671 Naval Architecture  -  723.5 Computer Applications  -  921 Mathematics  -  723 Computer Software, Data Handling and Applications  -  654.2 Rocket Engines  -  654.1 Rockets and Missiles  -  612 Engines  -  615.8 Wind Power (Before , use code )  -  617.3 Steam Engines  -  621 Nuclear Reactors  -  631.1 Fluid Flow, General  -  651.1 Aerodynamics, General
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

116. Accession number:  20092912201646
  Title:  Free vibration equation of a multidimensional vibration isolation device and its root
  Authors:  Yu, Daguo1, 2 ; Ma, Lüzhong1 ; Guo, Hongliu1 ; Wang, Guoming1 ; Shi, Qin1 
  Author affiliation:  1  School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
  2  School of Mechanical Engineering and Automation, North University of China, Taiyuan 030051, China
  Corresponding author:  Yu, D. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  184-188 183
  Language:  Chinese
  ISSN:  10001298
  CODEN:  NUYCA3
  Document type:  Journal article (JA)
  Publisher:  Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:  A vibration isolation device is proposed to absorb multidimensional vibration. The device is composed of double Stewart mechanisms, up-platform, and down-platform. It provides an easy way of multidimensional vibration isolation. The kinetic equation is derived from motion analysis and force analysis. Its roots show that the innate frequency of the device is lower than 5?Hz and the vibration of the device attenuates rapidly. ADAMS simulation and experiment prove that the device absorbs multidimensional vibration very well. So it can be used in vibration isolation when its stiffness coefficient, damping coefficient and the sizes are designed according to the formulae derived.
  Number of references:  8
  Main heading:  Equations of motion
  Controlled terms:  Integral equations  -  Kinetic energy  -  Kinetic theory  -  Kinetics  -  Steel bridges
  Uncontrolled terms:  Adams simulation  -  Damping coefficients  -  Force analysis  -  Free vibration  -  Kinetic equation  -  Kinetic equations  -  Mode analysis  -  Motion analysis  -  Multidimensional vibrations  -  Stewart mechanism   -  Stiffness coefficients  -  Vibration isolation  -  Vibration isolations
  Classification code:  401.1 Bridges  -  545.3 Steel  -  631.1 Fluid Flow, General  -  921.2 Calculus  -  931 Classical Physics; Quantum Theory; Relativity  -  931.1 Mechanics
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

117. Accession number:  20092912201614
  Title:  Parameters matching method for parallel hybrid hydraulic excavators
  Authors:  Lin, Xiao1 ; Guan, Cheng1 ; Pan, Shuangxia1 ; Wang, Dongyun1 
  Author affiliation:  1  Institute of Mechanical Design, Zhejiang University, Hangzhou 310027, China
  Corresponding author:  Lin, X. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  28-32
  Language:  Chinese
  ISSN:  10001298
  CODEN:  NUYCA3
  Document type:  Journal article (JA)
  Publisher:  Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:  In order to optimize the efficiency of a parallel hybrid hydraulic excavator (PHHE), this paper firstly get started with the analysis of the system's structure, and then the optimal objective function and constraint equations that depict powertrain unit and energy storage unit for PHHE were put forward along with a parameter matching method for the machine. For the purpose of component sizing and matching in PHHE, one case was done in a 5 ton hybrid excavator, and the system with the designed parameters of components could reduce components' peak power, increase system efficiency and decrease fuel consumption rate by using Matlab and Simulink toolbox.
  Number of references:  11
  Main heading:  Excavators
  Controlled terms:  Constrained optimization  -  Construction equipment  -  Electric power measurement  -  Excavation  -  Hydraulic machinery  -  Hydraulics  -  MATLAB  -  Mining machinery
  Uncontrolled terms:  Component sizing  -  Constraint equation  -  Energy storage unit  -  Fuel consumption rates  -  Hybrid power  -  Hydraulic excavator  -  Matching methods  -  MATLAB and SIMULINK  -  Objective functions  -  Parameter matching   -  Parameters matching  -  Peak power  -  System efficiency
  Classification code:  961 Systems Science  -  942.2 Electric Variables Measurements  -  921 Mathematics  -  731.1 Control Systems  -  723.5 Computer Applications  -  723.1.1 Computer Programming Languages  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory  -  632.2 Hydraulic Equipment and Machinery  -  632.1 Hydraulics  -  502.2 Mine and Quarry Equipment  -  502.1 Mine and Quarry Operations  -  405.2 Construction Methods  -  405.1 Construction Equipment
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

118. Accession number:  20092912201634
  Title:  Separation of deltamethrin residue in apple juice with macroporous adsorption resin
  Authors:  Gao, Zhenpeng1 ; Yue, Tianli1 ; Yuan, Yahong1 ; Wang, Lei1 
  Author affiliation:  1  College of Food Science and Engineering, Northwest A and F University, Yangling, Shaanxi 712100, China
  Corresponding author:  Yue, T. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  124-128 152
  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:  With the aim to remove deltamethrin residue in apple juice, the techniques of separating deltamethrin in apple juice with macroporous adsorption resin were studied. Through static adsorption experiment, the macroporous adsorption resins were screened. Based on dynamic adsorption study, the separation condition was optimized. The result showed that the LS803 resin had the strongest absorption capacity for deltamethrin residue in apple juice. The static absorption balance time of the LS803 resin was 100 min. The optimized condition was obtained as temperature 20°C, the concentration of apple juice 110 g/L, and flow rate 4 mL/min.
  Number of references:  9
  Main heading:  Adsorption
  Controlled terms:  Absorption  -  Enzyme activity  -  Experiments  -  Fruit juices  -  Fruits  -  Resins  -  Separation
  Uncontrolled terms:  Adsorption separation  -  Apple juice  -  Deltamethrin residue  -  Macroporous adsorption resin  -  Orthogonal experiment
  Classification code:  931.2 Physical Properties of Gases, Liquids and Solids  -  901.3 Engineering Research  -  822.3 Food Products  -  821.4 Agricultural Products  -  815.1.1 Organic Polymers  -  802.3 Chemical Operations  -  461.9 Biology
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

119. Accession number:  20092912201624
  Title:  Influence of rotational speed of pumps on hydraulic losses in suction boxes and discharge passages
  Authors:  Zhu, Honggeng1 ; Zhang, Rentian1, 2 ; Liu, Jun3 ; Zhu, Quanrong4 ; Yao, Linbi2 
  Author affiliation:  1  College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China
  2  Jiangsu Surveying and Design Institute of Water Resources Co. Ltd., Yangzhou 225009, China
  3  Jiangsu Water Supply Co. Ltd. for S-to-N Water Diversion Project, Nanjing 210029, China
  4  Hitachi Pump Manufacture (Wuxi) Co. Ltd., Wuxi 214000, China
  Corresponding author:  Zhu, H. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  76-80
  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 comparison of different research methods on the hydraulic losses of suction boxes and discharge passages, the computational fluid dynamics method is adopted to simulate the internal flow of four different pumping systems and to investigate the influence of rotational speed of pumps on hydraulic losses of suction boxes and discharge passages. The computed results indicate that the internal flow of suction box is affected by the pre-swirl caused by impeller rotation, the value of hydraulic loss is smaller than that when the suction box is operated solely without pump. The hydraulic loss of suction box keeps unchanged at the same flow rate when the rotational speed of pump is changed. The hydraulic characteristics of discharge passage are influenced by the flow conditions and residual circulation of pump diffusers. The internal flow field is not conformed to the affinity law and the hydraulic loss of discharge passage is unequal at the same flow rate when the rotational speed of pump is changed. The validity and reliability of numerical computation are verified by model test results of pumping systems.
  Number of references:  11
  Main heading:  Pumps
  Controlled terms:  Computational fluid dynamics  -  Flow rate  -  Hydraulics  -  Photoacoustic effect  -  Pumping plants  -  Speed
  Uncontrolled terms:  Computational fluid dynamics methods  -  Flow condition  -  Hydraulic characteristic  -  Hydraulic loss  -  Impeller rotation  -  Internal flow field  -  Internal flows  -  Model tests  -  Numerical computation  -  Numerical computations   -  Pre-swirl  -  Pumping systems  -  research methods  -  Rotational speed  -  Suction box  -  Suction boxes and discharge passages
  Classification code:  943.2 Mechanical Variables Measurements  -  931.1 Mechanics  -  921.6 Numerical Methods  -  751.1 Acoustic Waves  -  741.1 Light/Optics  -  723.5 Computer Applications  -  632.1 Hydraulics  -  631.1.2 Gas Dynamics  -  631.1.1 Liquid Dynamics  -  631 Fluid Flow  -  618.2 Pumps  -  446 Waterworks  -  402.1 Industrial and Agricultural Buildings
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

133. Accession number:  20092912201647
  Title:  Master-slave position controller of electron-hydraulic servo telerobot
  Authors:  Gong, Mingde1 ; Zhao, Dingxuan1 ; Feng, Ruyang1 
  Author affiliation:  1  College of Mechanical Science and Engineering, Jilin University, Changchun 130025, China
  Corresponding author:  Gong, M. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  189-193
  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 eliminate the errors of cylinders' dynamic output positions of master side and the influence of random disturbance of slave side, disturbance state observer optimal control and robust dynamic compensate PD feedback control algorithm was presented for master-slave side, which is aiming at the nonlinearity and uncertainty of master-slave position control in the electro-hydraulic servo telerobot. A linear quadratic with disturbance observer and a dynamic robust compensator position controller were developed. Simulation and experimental results were given to demonstrate the availability of the proposed algorithm. The experimental results show that the designed controllers both improve position tracking precision for master-slave side and possess of good adaptive ability and robustness in existence of out side disturbance, enhances the operation of electro-hydraulic servo telerobot with force feedback.
  Number of references:  9
  Main heading:  Feedback
  Controlled terms:  Algorithms  -  Controllers  -  Hydraulics  -  Observability  -  Pneumatic control equipment  -  Position control  -  Random errors  -  Robust control  -  State estimation  -  State feedback   -  Synchronous motors  -  Tracking (position)
  Uncontrolled terms:  Adaptive ability  -  Bilateral servo control  -  Disturbance observer  -  Dynamic output  -  Electro-hydraulic servo  -  Electrohydraulic servos  -  Force feedback  -  Linear quadratic  -  Master-slave  -  Non-Linearity   -  Optimal controls  -  P-D feedback  -  Position controller  -  Position tracking  -  Random disturbances  -  Robust compensators  -  State observer  -  Telerobot
  Classification code:  922 Statistical Methods  -  921 Mathematics  -  732.1 Control Equipment  -  731.3 Specific Variables Control  -  731.1 Control Systems  -  731 Automatic Control Principles and Applications  -  723 Computer Software, Data Handling and Applications  -  716.2 Radar Systems and Equipment  -  705.3.1 AC Motors  -  656.1 Space Flight  -  654.1 Rockets and Missiles  -  632.4 Pneumatic Equipment and Machinery  -  632.1 Hydraulics
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

134. Accession number:  20092912201612
  Title:  Ride comfort of MR-damper semi-active suspension systems based on co-simulations
  Authors:  Liu, Wei1 ; Liu, Dawei1 ; Chen, Huanming1 ; Fu, Chaoxing1 
  Author affiliation:  1  College of Mechanical and Electronic Engineering, Qingdao University, Qingdao 266071, China
  Corresponding author:  Liu, D. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  16-22
  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 ride comfort of semi-active vehicle, a detailed multi-body dynamic model of a passenger car was established by using SIMPACK software, and a seven-degree freedom mathematical model for the semi-active automotive system was also built. A model reference adaptive control based on neural network was designed for semi-active suspension system and worked out by means of Matlab/Simulink. The SIMPACK-Matlab co-simulation method was used to analyze the ride comfort of MR-damper semi-active suspension. The result showed that, comparing with passive suspension, when the car is running at 60 km/h on grade C road, the neural network controller could reduce the mean square roots of the vertical acceleration, the roll angular acceleration and the pitch angular acceleration by 32.33%, 28.09% and 35.93%. When the speed of car achieved 120 km/h, the mean square roots reduced by 41.56%, 18.52% and 22.97%. It is concluded that the model reference adaptive control based on neural network could reduce the vehicle body vibration and improve the ride comfort.
  Number of references:  16
  Main heading:  Automobile suspensions
  Controlled terms:  Adaptive control systems  -  Automobile bodies  -  Automobiles  -  Damping  -  Mathematical models  -  MATLAB  -  Neural networks  -  Simulators  -  Systems engineering  -  Vehicle suspensions   -  Vehicles
  Uncontrolled terms:  Angular acceleration  -  Automotive Systems  -  Cosimulation  -  MATLAB /simulink  -  Mean square  -  Model reference adaptive control  -  MR-damper  -  Multi-body dynamic  -  Neural network controllers  -  Passive suspension   -  Ride comfort  -  Ride comforts  -  Semi-active  -  Semi-active suspension  -  SIMPACK  -  Vehicle body  -  Vertical accelerations
  Classification code:  663.2 Heavy Duty Motor Vehicle Components  -  671 Naval Architecture  -  723.1.1 Computer Programming Languages  -  723.4 Artificial Intelligence  -  961 Systems Science  -  723.5 Computer Applications  -  912 Industrial Engineering and Management  -  921 Mathematics  -  931.1 Mechanics  -  731.1 Control Systems  -  662.4 Automobile and Smaller Vehicle Components  -  662.1 Automobiles  -  432 Highway Transportation  -  461.1 Biomedical Engineering  -  601.2 Machine Components  -  621 Nuclear Reactors  -  632.1 Hydraulics  -  654.1 Rockets and Missiles  -  655.2 Satellites  -  657.1 Solar Energy and Phenomena
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

135. Accession number:  20092912201609
  Title:  Air/fuel ratio control of gasoline HCCI engine based on neural network
  Authors:  Zhou, Nenghui1 ; Xie, Hui1 ; Zhao, Hua1 ; Chen, Tao1 
  Author affiliation:  1  State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China
  Corresponding author:  Zhou, N. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  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:  Homogeneous charge compression ignition (HCCI) combustion is still confronted with problems in cycle-to-cycle air/fuel ratio control. Because there are no parameters that characterize air inflow in each cycle, dynamic recurrent neural network (Elman) was adopted for forecasting engine's air inflow in each cycle. Based on accurate air inflow in each cycle, accurate air/fuel ratio control is achieved in steady and transient operating conditions by oxygen sensor's closed loop control and fuel film's compensation. The experiment results show that prediction model based on neural network and air/fuel ratio control strategy can meet the need of real-time control over HCCI operation.
  Number of references:  8
  Main heading:  Ignition
  Controlled terms:  Closed loop control systems  -  Gasoline  -  Mathematical models  -  Oxygen  -  Real time control  -  Recurrent neural networks
  Uncontrolled terms:  Air inflow  -  Air/fuel ratio  -  Air/fuel ratio control  -  Closed-loop control  -  Dynamic recurrent neural networks  -  Fuel film  -  Gasoline engine  -  Gasoline HCCI  -  HCCI  -  Homogeneous charge compression ignition combustions   -  Prediction model  -  Steady and transient
  Classification code:  921 Mathematics  -  804 Chemical Products Generally  -  732 Control Devices  -  731.1 Control Systems  -  961 Systems Science  -  731 Automatic Control Principles and Applications  -  523 Liquid Fuels  -  521.1 Fuel Combustion  -  461.1 Biomedical Engineering  -  723.4 Artificial Intelligence
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

150. Accession number:  20092912201625
  Title:  Study on the method of centrifugal pump cavitation feature extraction based on pressure fluctuation and time serials analysis
  Authors:  Su, Yongsheng1 ; Wang, Yongsheng1 ; Zhang, Yongxiang1 ; Duan, Xiangyang1 
  Author affiliation:  1  College of Naval Architecture and Power, Naval University of Engineering, Wuhan 430033, China
  Corresponding author:  Su, Y. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  81-84
  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:  According to the sensitivity of pressure fluctuation amplitude related with the change of cavitation, the cavitation was first simulated on the centrifugal pump experimentation bed. It was found that the shaft frequency of the pump outlet pressure signal increase; many low frequencies appeared at the time of cavitation happening by using the outlet pressure signal. The natural state time serials model was established by the surface vibration and the outlet pressure signal of pump. Thus the state of centrifugal pump is distinguished and the feature extraction of cavitation is recognized by the variance of the model residual.
  Number of references:  7
  Main heading:  Feature extraction
  Controlled terms:  Cavitation  -  Centrifugal pumps  -  Hydraulic machinery  -  Mining  -  Pumping plants  -  Pumps
  Uncontrolled terms:  Low frequency  -  Outlet pressures  -  Pressure fluctuation  -  Residual  -  Shaft frequency  -  Surface vibration  -  Time serials
  Classification code:  741.1 Light/Optics  -  723.5 Computer Applications  -  716 Telecommunication; Radar, Radio and Television  -  632.2 Hydraulic Equipment and Machinery  -  751.1 Acoustic Waves  -  631.1.1 Liquid Dynamics  -  502.1 Mine and Quarry Operations  -  446 Waterworks  -  402.1 Industrial and Agricultural Buildings  -  618.2 Pumps
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

166. Accession number:  20092912201611
  Title:  Comparison of diesel and DME injection system performances at different temperatures
  Authors:  Zhao, Xuefei1 ; Li, Xiaolu1 ; Fang, Xiaomin1 ; Te, Mule2 
  Author affiliation:  1  School of Electromechanical Engineering, China Jiliang University, Hangzhou 310018, China
  2  Shandong Kangda Fuel Injection Equipment Co. Ltd., Longkou 265701, China
  Corresponding author:  Zhao, X. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  10-15
  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:  The mathematical model is established for the conventional pump-pipe-injector fuel system. Through the numerical simulations on diesel and DME injection systems, the effects of temperatures on these two injection systems are disclosed, and their differences are illustrated. At the same temperature, line peak pressure and the rate of pressure increase and decrease for DME are lower than that for diesel fuel. Pressure of DME drops 51.1% and 45.2% than that of diesel at 20°C and 50°C. DME injection rate and cumulative volume flow through nozzle orifice are much lower than that of diesel. The open timing of nozzle is delayed. DME peak rate drops 38.8% and 36.8% than that of diesel at 20°C and 50°C. With the increase of temperature, the diesel and DME pressures in nozzle, injection rate and SMD all decrease, and the open timing of nozzle is delayed.
  Number of references:  8
  Main heading:  Synthetic fuels
  Controlled terms:  Computer simulation  -  Diesel fuels  -  Drops  -  Mathematical models  -  Nozzles  -  Time measurement
  Uncontrolled terms:  Conventional pumps  -  Diesel  -  DME  -  Effects of temperature  -  Injection rates  -  Injection system  -  Injection systems  -  Nozzle orifice  -  Numerical simulation  -  Peak pressure   -  Rate of pressure  -  Volume flow
  Classification code:  931.2 Physical Properties of Gases, Liquids and Solids  -  931.1 Mechanics  -  921 Mathematics  -  723.5 Computer Applications  -  631.1 Fluid Flow, General  -  943.3 Special Purpose Instruments  -  612.2 Diesel Engines  -  523 Liquid Fuels  -  522 Gas Fuels  -  443.2 Meteorological Instrumentation  -  443.1 Atmospheric Properties  -  524 Solid Fuels
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

167. Accession number:  20092912201633
  Title:  Effect of different treatments on the color changes of Yali pear after harvest
  Authors:  Yan, Shijie1 ; Liang, Liya1 ; Hu, Xiaosong2 ; Wang, Rufu3 ; Xiao, Lixia4 
  Author affiliation:  1  Food Science Department, Tianjin Agricultural University, Tianjin 300384, China
  2  College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
  3  College of Food Science and Engineering, Shanxi Agricultural University, Taigu 030801, China
  4  College of Food Science and Engineering, Yangzhou University, Yangzhou 225001, China
  Corresponding author:  Xiao, L. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  120-123 163
  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 maturity, cooling method and bagging on the color changes of Yali pear after harvest using CIELAB color variables were studied. The results showed that late picking improved the maturity together with L, a and b (no-bagging fruits) value of Yali pear, decreased the chlorophyll content, and increased the carotenoid content of Yali pear. Slow cooling brought increases of L and a value and degradation of chlorophyll, but had not distinct influence on no-bagging fruit. Bagging treatment improved L and a value, decreased b value of Yali pear, decreased the chlorophyll content, made the peel color shallow, and slowed down the color change of the fruit peel.
  Number of references:  15
  Main heading:  Fruits
  Controlled terms:  Aberrations  -  Chlorophyll  -  Color  -  Colorimetry  -  Cooling  -  Harvesting  -  Porphyrins
  Uncontrolled terms:  Chromatic aberration  -  CIELAB color variables  -  Preservation  -  Treatment conditions  -  Yali pear
  Classification code:  941.3 Optical Instruments  -  821.4 Agricultural Products  -  821.3 Agricultural Methods  -  804.1 Organic Compounds  -  941.4 Optical Variables Measurements  -  802.3 Chemical Operations  -  741.1 Light/Optics  -  741 Light, Optics and Optical Devices  -  641.2 Heat Transfer  -  801.2 Biochemistry
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

168. Accession number:  20092912201630
  Title:  Optimization on ultrasonic-assisted extraction technology of oil from Paeonia suffruticosa Andr. seeds with response surface analysis
  Authors:  Yi, Junpeng1, 2 ; Zhu, Wenxue2 ; Ma, Haile1 ; Wang, Yifen3 
  Author affiliation:  1  College of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
  2  College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471003, China
  3  State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650204, China
  Corresponding author:  Yi, J. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  103-110
  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 single factor analysis, the effect of liquid-solid ratio, ultrasonic power, extraction temperature, and extraction time on enhancing oil yield from Paeonia suffruticosa Andr. seed was evaluated by response surface analysis. A 4-factor, 3-level Box-Behnken experimental design was applied and the interactions of each factor on the oil yield were also investigated. The optimal conditions were at 54°C extraction temperature, 11 mL/g liquid-solid ratio, 300 W ultrasonic power, and 60 min extraction time using petroleum ether with a boiling range of 60-90°C as the extraction agent. Under such conditions, the oil yield is 24.12% after three runs. The extracted oil was analyzed by GCMS to determine the oil constituents. Unsaturated fatty acids such as linoleic acid and linolenic acid are abundant in Paeonia suffruticosa Andr. seeds.
  Number of references:  13
  Main heading:  Surface analysis
  Controlled terms:  Acids  -  Ethers  -  Fatty acids  -  Liquids  -  Seed  -  Surface properties  -  Ultrasonics
  Uncontrolled terms:  Boiling range  -  Box-Behnken experimental design  -  Extraction technology  -  Extraction temperatures  -  Extraction time  -  Factor analysis  -  GCMS  -  Linoleic acid  -  Linolenic acids  -  Oil yield   -  Optimal conditions  -  Paeonia suffruticosa Andr. seeds oil  -  Petroleum ether  -  Response surface analysis  -  Ultrasonic power  -  Unsaturated fatty acids
  Classification code:  931.2 Physical Properties of Gases, Liquids and Solids  -  821.4 Agricultural Products  -  804.1 Organic Compounds  -  951 Materials Science  -  804 Chemical Products Generally  -  753.1 Ultrasonic Waves  -  423 Non Mechanical Properties and Tests of Building Materials  -  803 Chemical Agents and Basic Industrial Chemicals
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

169. Accession number:  20092912201632
  Title:  Microwave modification of alcohol leached rapeseed protein concentrate
  Authors:  Pan, Mu1 ; Sun, Hanju1 ; Jiang, Shaotong1 ; Pan, Lijun1 ; Zheng, Zhi1 ; Luo, Shuizhong1 
  Author affiliation:  1  School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei 230009, China
  Corresponding author:  Jiang, S. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  116-119
  Language:  Chinese
  ISSN:  10001298
  CODEN:  NUYCA3
  Document type:  Journal article (JA)
  Publisher:  Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:  A new method of utilizing microwave to modify alcohol leached rapeseed protein concentrate was studied. The influence factors on the NSI were analyzed, such as RPC concentration, microwave power, modification time and pH value. The orthogonal test results showed that the optimum modification parameters were as follows: RPC concentration 5%, microwave power 300 W, modification time 1 min and pH value 10. Under the above-mentioned modification parameters, the modified alcohol leached rapeseed protein concentrate with NSI of 73.38% and foaming stability of 91.25% were obtained.
  Number of references:  10
  Main heading:  Leaching
  Controlled terms:  Microwave generation  -  Microwave power transmission  -  Particle spectrometers  -  pH effects
  Uncontrolled terms:  Influence factors  -  Microwave modification  -  Microwave power  -  Modification  -  NSI  -  Orthogonal test  -  pH value  -  Protein concentrates
  Classification code:  802.3 Chemical Operations  -  801.1 Chemistry, General  -  714.2 Semiconductor Devices and Integrated Circuits  -  932.1 High Energy Physics  -  714.1 Electron Tubes  -  706.1.1 Electric Power Transmission  -  533.1 Ore Treatment  -  713.2 Oscillators
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

170. Accession number:  20092912201621
  Title:  Numerical simulation and test of grain impact piezoelectric yield sensor
  Authors:  Gao, Jianmin1 ; Hao, Leibin1 ; Zhang, Gang1 ; Li, Yangbo1 ; Yu, Lu1 
  Author affiliation:  1  Key Laboratory of Modern Agricultural Equipment and Technology Ministry of Education, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:  Gao, J. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  63-66 93
  Language:  Chinese
  ISSN:  10001298
  CODEN:  NUYCA3
  Document type:  Journal article (JA)
  Publisher:  Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:  A novel grain-flow yield sensor was designed. The grain-sensor impact FEM model was established with LSDYNA software, and the impact process was simulated to discover how the sensor material influences the grain impacting sensor process. The physics grain impacting sensor test system was developed by applying LabView and a kind of high performance piezoelectric ceramic newly developed. This system was used to testify simulation result. The research shows Si3N4 is the best material of making sensor among Si3N4, PP and 1Cr18Ni9; the physics grain impacting sensor test system meets the requirement of the grain impacting sensor test without pre-amplifier by using this kind of high performance piezoelectric ceramic newly developed. The test cost is reduced greatly, the test precision is increased, and the test circuit is simplified greatly.
  Number of references:  8
  Main heading:  Sensors
  Controlled terms:  Computer simulation  -  Flow simulation  -  Mathematical models  -  Piezoelectric ceramics  -  Piezoelectric transducers  -  Piezoelectricity  -  Testing
  Uncontrolled terms:  Explicit dynamics  -  Grain  -  Impact  -  Impact grain-flow yield sensor  -  Numerical simulation
  Classification code:  812.1 Ceramics  -  801 Chemistry  -  752.1 Acoustic Devices  -  732.2 Control Instrumentation  -  723.5 Computer Applications  -  921 Mathematics  -  708.1 Dielectric Materials  -  701.1 Electricity: Basic Concepts and Phenomena  -  631.1 Fluid Flow, General  -  423.2 Test Methods  -  422.2 Test Methods  -  704 Electric Components and Equipment
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

187. Accession number:  20092912201642
  Title:  Design and experiment on the field information pH value and electrical conductivity acquisition instrument
  Authors:  Wang, Fenghua1 ; Qiu, Zhengjun2 ; Jie, Dengfei1 ; Zhao, Huamin1 ; Zhang, Haihong1 ; Zhang, Shujuan1 
  Author affiliation:  1  College of Engineering and Technology, Shanxi Agricultural University, Taigu 030801, China
  2  School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310029, China
  Corresponding author:  Zhang, S. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  164-168
  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 field information acquisition instrument to measure the soil pH value and electrical conductivity (EC) was designed. Based on the measurement theory and the software and hardware design of the instrument, the calibration test to the acquisition instrument measuring pH value and electrical conductivity by means of two-point and the standard KCl solution was carried out. Then 15 soil samples were taken from a piece of bean field with the sampling interval of 14 m × 14 m. The validation test to the calibration equation was carried out. The results showed that the relative error between the calibration result and the accurate value for soil pH value is less than 1%, and the relative error between the calibration result and the accurate value for soil EC is less than 14%, the linear regression model significance probability of the soil pH value calibration results and exact value is 0.0478, R2 = 0.8978, the linear regression model significance probability of the soil EC calibration results and exact value is 0.0004, R2 = 0.9716, it is proved that the calibration equations of the pH value and EC are reliable.
  Number of references:  8
  Main heading:  pH effects
  Controlled terms:  Calibration  -  Electric conductivity  -  Electric conductivity measurement  -  Geologic models  -  Instruments  -  Linear regression  -  Measurement theory  -  Mergers and acquisitions  -  Soils
  Uncontrolled terms:  Acquisition instrument  -  Calibration equations  -  Calibration tests  -  Electrical conductivity  -  Field information acquisition  -  Hardware design  -  Linear regression models  -  Measuring pH  -  PH value  -  Relative errors   -  Sampling interval  -  Soil EC  -  Soil pH  -  Soil sample  -  Two-point  -  Validation test
  Classification code:  944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments  -  943 Mechanical and Miscellaneous Measuring Instruments  -  942.2 Electric Variables Measurements  -  942 Electric and Electronic Measuring Instruments  -  941 Acoustical and Optical Measuring Instruments  -  922.2 Mathematical Statistics  -  922 Statistical Methods  -  912 Industrial Engineering and Management  -  902.2 Codes and Standards  -  801.1 Chemistry, General  -  701.1 Electricity: Basic Concepts and Phenomena  -  483.1 Soils and Soil Mechanics  -  481.1 Geology
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

188. Accession number:  20092912201635
  Title:  Experiment on enzymatic hydrolysis to improve in Vitro anti-oxidative activity of pine needle flavonoids
  Authors:  Yin, Yongguang1 ; Yan, Linna1 ; Yu, Qingyu1 
  Author affiliation:  1  College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
  Corresponding author:  Yin, Y. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  129-132 178
  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 in Vitro anti-oxidative activity of pine needle flavonoids (PNF) and enzymatic hydrolysis were investigated. It is found that the DPPH radical scavenging activity of PNF is similar to that of ascorbic acid. The hydroxyl radical and super-oxide radical scavenging activity of PNF are 4 times and 2 times as that of ascorbic acid, respectively. As for reducing power, EC50 ratio of PNF to ascorbic acid is only 1/2.8. β-glucosidase is used to hydrolyze PNF. The optimal hydrolyzing conditions are 40°C of reaction temperature, 1/1000 of enzyme addition, 0.6 g/L of substrate concentration, and 5 h of reaction time. The anti-oxidative activity of enzymatic hydrolyzed PNF is increased obviously.
  Number of references:  12
  Main heading:  Enzymatic hydrolysis
  Controlled terms:  Experiments  -  Ketones  -  Needles  -  Organic acids
  Uncontrolled terms:  Anti-oxidative activity  -  Ascorbic acids  -  Flavonoids  -  Glucosidase  -  Hydroxyl radicals  -  In-vitro  -  Pine needle  -  Pine needle flavonoids  -  Radical scavenging activity  -  Reaction temperature   -  Reaction time  -  Reducing power  -  Substrate concentrations
  Classification code:  462.1 Biomedical Equipment, General  -  801.2 Biochemistry  -  802.2 Chemical Reactions  -  804.1 Organic Compounds  -  819.6 Textile Mills, Machinery and Equipment  -  901.3 Engineering Research
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

205. Accession number:  20092912201620
  Title:  Measuring system for residue cover rate in field based on BP neural network
  Authors:  Li, Hongwen1 ; Li, Hui1 ; He, Jin1 ; Li, Shiwei1 
  Author affiliation:  1  College of Engineering, China Agricultural University, Beijing 100083, China
  Corresponding author:  Li, H. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  58-62
  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:  According to the analyses of the texture differences between straw and soil, a new BP neural network measuring system for residue cover rate is designed. By taking the filed photos as the research objectives, this system was developed through VC programming tools. Straws were detected by combining the texture features and BP neural network. Selection standard of learning samples for input nodes was constructed based on the entropy in the system. Artificial simulation and field testing indicated that the new measuring system could detect over 90% of the straws in the field and control the counting error of residue cover rate under 5%. Compared with the traditional manual measuring, the measuring efficiency in the new system could be improved by 50-120 times.
  Number of references:  12
  Main heading:  Neural networks
  Controlled terms:  Agricultural machinery  -  Agriculture  -  Measurement theory  -  Soil conservation  -  Textures
  Uncontrolled terms:  Artificial simulation  -  BP neural network  -  BP neural networks  -  Conservation tillage  -  Counting errors  -  Field testing  -  In-field  -  Input node  -  Learning samples  -  Measuring systems   -  New system  -  Programming tools  -  Research objectives  -  Residue cover  -  Residue cover rate  -  Texture feature  -  Texture features
  Classification code:  922 Statistical Methods  -  821.3 Agricultural Methods  -  821.1 Agricultural Machinery and Equipment  -  933 Solid State Physics  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  483.1 Soils and Soil Mechanics  -  461.1 Biomedical Engineering  -  723.4 Artificial Intelligence
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

206. Accession number:  20092912201627
  Title:  Design of temperature/oxygen concentration-based aeration control system for aerobic composting
  Authors:  Xu, Dequan1 ; Shi, Haifeng1 ; Zhao, Liang1 ; Deng, Changyan1 ; Ni, Fuchuan2 ; Yao, Juan2 
  Author affiliation:  1  College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
  2  College of Basic Sciences, Huazhong Agricultural University, Wuhan 430070, China
  Corresponding author:  Deng, C. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  90-93
  Language:  Chinese
  ISSN:  10001298
  CODEN:  NUYCA3
  Document type:  Journal article (JA)
  Publisher:  Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:  Temperature/oxygen concentration-based aeration control system was designed and realized to control the process of aerobic composting. The outline, method, function and process of realization of the system were described in detail. By 2-week aerobic composting with this system, it showed that the system could run stably during composting and the composting temperature, humidity, and oxygen concentration can be monitored by the system. The time of temperature remained at 55-65°C was more than 9 days. The pathogenic microorganism can be killed and the stability of product is good.
  Number of references:  8
  Main heading:  Process control
  Controlled terms:  Concentration (process)  -  Control  -  Control system analysis  -  Oxygen
  Uncontrolled terms:  Aeration  -  Aeration control  -  Aerobic composting  -  Composting temperature  -  Oxygen concentration  -  Oxygen concentrations  -  Pathogenic microorganisms
  Classification code:  731 Automatic Control Principles and Applications  -  731.1 Control Systems  -  732 Control Devices  -  802.3 Chemical Operations  -  804 Chemical Products Generally
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

207. Accession number:  20092912201640
  Title:  Multi-body dynamic simulation and experiments of the straw-checkerboard barriers paving robot
  Authors:  Liu, Jinhao1 ; Pan, Haibing2 ; Shu, Qing3 
  Author affiliation:  1  School of Technology, Beijing Forestry University, Beijing 100083, China
  2  College of Electromechanical Engineering, Northeast Forestry University, Harbin 150040, China
 3  School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China
  Corresponding author:  Liu, J. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  153-157
  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-body dynamic model of the straw-checkerboard barriers paving robot is built through the combination of the Pro/E and ADAMS software. After the model is added with the required boundary conditions, the vibration state of the straw-checkerboard barriers paving robot is simulated when the pressing wheel and insert blade work normally. Through the simulation, the displacement, velocity and acceleration curves of the mass centers to the robot's tractor, longitudinal paving mechanism, horizontal paving mechanism, pressing wheel and insert blade are obtained. Through the analysis of the fluctuation curves, the improvement solution is proposed, which provides data for further optimization of the robot. At last, the experiment curves in the actual state are obtained by the experiment. By the contrast of the experiment and simulation curves, it is confirmed that the simulation results of the straw-checkerboard barriers paving robot are reasonable and reliable.
  Number of references:  8
  Main heading:  Robots
  Controlled terms:  Curve fitting  -  Experiments  -  Mechanics  -  Pavements  -  Simulators  -  Wheels
  Uncontrolled terms:  Acceleration curve  -  ADAMS software  -  Mass centers  -  Multi-body dynamic  -  Multi-body dynamic simulation  -  Simulation analysis  -  Simulation curves  -  Simulation result  -  Vibration state
  Classification code:  671 Naval Architecture  -  731.5 Robotics  -  731.6 Robot Applications  -  931.1 Mechanics  -  901.3 Engineering Research  -  921.6 Numerical Methods  -  922.2 Mathematical Statistics  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory  -  662.1 Automobiles  -  657.1 Solar Energy and Phenomena  -  406.1 Highway Systems  -  406.2 Roads and Streets  -  601.2 Machine Components  -  621 Nuclear Reactors  -  654.1 Rockets and Missiles  -  655.2 Satellites
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

238. Accession number:  20092912201617
  Title:  Error compensation of CVT pressure sensor based on support vector machine
  Authors:  He, Lihong1 ; Liu, Jin'gang2 ; Zhou, Yunshan3 
  Author affiliation:  1  College of Mechanical Engineering, Hunan Institute of Engineering, Xiangtan 411101, China
  2  College of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China
  3  College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China
  Corresponding author:  He, L. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  43-46
  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:  Aiming at the problem of greater measurement error of pressure sensor in continuously variable transmission (CVT), a method of establishing error compensation model using support vector machine (SVM) was presented. Firstly, the basic structure of error compensation model was determined based on the analysis of the factors inducing measurement error. Secondly, training set was constructed by experiment, and the error compensation model was trained with the training data. Finally, the model parameters were optimized by the genetic algorithm during the training process. The experiment results indicate that the proposed error compensation model improves the linearity of the pressure sensor, and reduces the maximum absolute error from 0.5 MPa to 0.15 MPa, which greatly improves the performance and measurement accuracy of pressure sensor.
  Number of references:  6
  Main heading:  Error compensation
  Controlled terms:  Image retrieval  -  Potential flow  -  Pressure sensors  -  Pressure transducers  -  Support vector machines  -  Variable speed transmissions  -  Vectors
  Uncontrolled terms:  Basic structure  -  Continuously variable transmission  -  Maximum absolute error  -  Measurement accuracy  -  Model parameters  -  Training data  -  Training process  -  Training sets
  Classification code:  921.1 Algebra  -  741 Light, Optics and Optical Devices  -  723.2 Data Processing and Image Processing  -  944.3 Pressure Measuring Instruments  -  723 Computer Software, Data Handling and Applications  -  631.1 Fluid Flow, General  -  602.2 Mechanical Transmissions  -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

239. Accession number:  20092912201638
  Title:  Application of two-step cluster analysis for appearance quality evaluation of flue-cured tobacco
  Authors:  Hu, Jianjun1, 2 ; Zhou, Jiheng1 ; Zhang, Jianping3 ; Yang, Hongqi1 
  Author affiliation:  1  Tobacco Science and Engineering Research Center, Hunan Agricultural University, Changsha 410128, China
  2  Training Center for Professional Technicians, China National Tobacco Corporation, Zhengzhou 450011, China
  3  Technical Center, Shanghai Tobacco (Group) Corp., Shanghai 200082, China
  Corresponding author:  Zhou, J. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  143-146 198
  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 appearance quality of flue-cured tobacco leafs of 14 main planted varieties in Yunnan Dali were analyzed by using the two-step cluster method. Based on the result, the appearance quality of flue-cured tobacco leafs were less affected by vary zoology spots and different varieties. The 100 samples of flue-cured tobacco leafs were divided into 3 clusters. This method defines the important characteristics in a cluster and the classification among types. The conclusion is objective, reasonable and reliable, coincided with the field performance of appearance quality of flue-cured tobacco leafs.
  Number of references:  12
  Main heading:  Tobacco
  Controlled terms:  Agriculture  -  Cluster analysis  -  Curing  -  Flues  -  Quality control
  Uncontrolled terms:  Appearance quality  -  Cluster method  -  Field performance  -  Flue-cured tobacco  -  Quality evaluation  -  Two-step cluster analysis
  Classification code:  922 Statistical Methods  -  913.3 Quality Assurance and Control  -  821.4 Agricultural Products  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  818.3 Rubber and Elastomer Processing  -  815.1 Polymeric Materials  -  802.2 Chemical Reactions  -  723 Computer Software, Data Handling and Applications  -  614.1 Steam Power Plant Design and Construction  -  521 Fuel Combustion and Flame Research  -  402.1 Industrial and Agricultural Buildings
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

250. Accession number:  20092912201636
  Title:  Purification process of total flavonoids in Cyclocarya paliurus leaves with macroporous resins
  Authors:  Wu, Caie1 ; Fang, Shengzuo1 ; Feng, Zongshuai1 ; Yang, Wanxia1 ; Li, Tingting1 ; Jia, Shaoqian1 
  Author affiliation:  1  College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China
  Corresponding author:  Wu, C. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  133-137
  Language:  Chinese
  ISSN:  10001298
  CODEN:  NUYCA3
  Document type:  Journal article (JA)
  Publisher:  Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:  With the aim to improve the purity of total flavonoids of Cyclocarya paliurus leaves, the suitable resin for separating and purifying total flavonoids of Cyclocarya paliurus leaves and the optimum parameters of purification were studied. The optimal techniques of separation and purification of flavonoid were obtained by static adsorption and elution tests, and the separation techniques were evaluated by measuring the concentration of total flavonoids of Cyclocarya paliurus leaves with ultraviolet spectrophotometer. The results showed that the AB-8 macroporous resin gave the best effect of separation with the sampling rate 2 BV/h and concentration 1.0 mg/mL, respectively, and the concentration of elution was 70% alcohol, with eluting velocity 2 BV/h. In conclusion, AB-8 resin could be applied to purify total flavonoids of Cyclocarya paliurus leaves.
  Number of references:  14
  Main heading:  Purification
  Controlled terms:  Adsorption  -  Resins  -  Separation
  Uncontrolled terms:  Concentration of  -  Cyclocarya paliurus leaves  -  Elution tests  -  Flavonoid  -  Flavonoids  -  Macroporous resin  -  Optimum parameters  -  Purification process  -  Sampling rates  -  Separation and purification   -  Separation techniques  -  Static adsorption  -  Total flavonoids
  Classification code:  802.3 Chemical Operations  -  815.1.1 Organic Polymers
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

251. Accession number:  20092912201648
  Title:  Reliability sensitivity design for rub-impact rotor system of rotating machinery
  Authors:  Su, Changqing1 ; Zhang, Yimin1 ; Li, Lexin2 ; Ma, Hui1 
  Author affiliation:  1  School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China
  2  School of Equipment Engineering, Shenyang Ligong University, Shenyang 110168, China
  Corresponding author:  Zhang, Y. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  194-198
  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:  On the basis of rub-impact dynamics equation of rotor system with rub-impact fault, according with the reliability design theory and sensitivity analysis method, the reliability sensitivity analysis method of the rotor system with rub-impact was extensively discussed by applying the random perturbation theory, Kronecker algebra, the fourth moment technology and matrix calculus theory. A numerical method for reliability sensitivity design of rotor system with rub-impact was presented. The variation regularities for reliability sensitivity of random parameters statistics characteristic were obtained and the effects of random parameters statistics characteristic on reliability of the rotor system were studied. The presented method provided the theoretic basis for the reliability design of the rotor system with rub-impact. A numerical example demonstrates that the result of presented method is accord with the qualitative analysis, the proposed method is efficient and accurate.
  Number of references:  8
  Main heading:  Sensitivity analysis
  Controlled terms:  Fiber optic sensors  -  Machine design  -  Machinery  -  Method of moments  -  Perturbation techniques  -  Quality assurance  -  Quality control  -  Reliability analysis  -  Reliability theory  -  Rotors (windings)
  Uncontrolled terms:  Analysis method  -  Kronecker algebra  -  Matrix calculus  -  Numerical example  -  Qualitative analysis  -  Random parameters  -  Random perturbation  -  Random perturbations  -  Reliability design  -  Reliability sensitivity   -  Rotor system  -  Rotor systems  -  Rub-impact  -  Rub-impact rotor systems  -  Variation regularity
  Classification code:  921 Mathematics  -  913.3 Quality Assurance and Control  -  913 Production Planning and Control; Manufacturing  -  741.1.2 Fiber Optics  -  922.2 Mathematical Statistics  -  732.2 Control Instrumentation  -  704.1 Electric Components  -  601 Mechanical Design  -  422.2 Test Methods  -  731.1 Control Systems
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

252. Accession number:  20092912201623
  Title:  Quantitative analysis of cavitation erosion based on image processing
  Authors:  Jiang, Daijun1 ; Chen, Cichang2 ; Zhang, Tao2 ; Wu, Chao3 
  Author affiliation:  1  School of Mechanical Engineering and Automation, Xihua University, Chengdu 610039, China
  2  School of Petroleum Engineering, Southwest Petroleum University, Chengdu 610500, China
  3  State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
  Corresponding author:  Jiang, D. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  72-75
  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 method of digital image processing is used to study the damage of cavitation on the surface of the aerofoil subarea. The cavitation corrosion's images of the aerofoil are gained with SEM. First, fuzzy enhancement is used. Second, threshold analysis is applied to pick-up the shallow pit. Third, morphology method is used to process the edge and work out the cavitation values. The idiographic numerical and quantitative values such as cavitation area, quantity are obtained.
  Number of references:  7
  Main heading:  Cavitation
  Controlled terms:  Cavitation corrosion  -  Digital image storage  -  Image processing  -  Imaging systems
  Uncontrolled terms:  Aerofoil  -  Cavitation erosion  -  Detection  -  Digital image processing  -  Fuzzy enhancement  -  Quantitative analysis  -  Quantitative values  -  SEM  -  Threshold analysis
  Classification code:  741.3 Optical Devices and Systems  -  741 Light, Optics and Optical Devices  -  723.2 Data Processing and Image Processing  -  746 Imaging Techniques  -  722.4 Digital Computers and Systems  -  631.1.1 Liquid Dynamics  -  539.1 Metals Corrosion  -  722.1 Data Storage, Equipment and Techniques
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

253. Accession number:  20092912201652
  Title:  Real-time inverse kinematics algorithm based on vector dot product
  Authors:  Liu, Huashan1 ; Zhu, Shiqiang1 ; Wu, Jianbo1 ; Liu, Songguo1 
  Author affiliation:  1  State Key Lab. of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China
  Corresponding author:  Liu, H. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  212-217 207
  Language:  Chinese
  ISSN:  10001298
  CODEN:  NUYCA3
  Document type:  Journal article (JA)
  Publisher:  Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:  In order to improve the real-time performance of inverse kinematics for 6R robots, a real-time and efficient algorithm based on vector dot product was proposed. The complex matrix equations were transformed to 10 pure algebraic equations containing 6 unknown joint variables, and symbolic preprocessing was applied in simplifying equations without any error accumulations caused by floating-point calculations. The production of extraneous roots in the solving process of the 5th and 6th joint variables was avoided by optimizing the linear combinations of related equations, which greatly improved the efficiency of the algorithm. Experiments on a 6R robot show that, the proposed algorithm has a stronger real-time performance than those of others to get the same precision solutions, the average time for gaining 8 accurate closed-form solutions is only 0.014 ms, and it can be applied efficiently in the practical on-line robot control.
  Number of references:  7
  Main heading:  Inverse kinematics
  Controlled terms:  Algorithms  -  Robots  -  Vectors
  Uncontrolled terms:  Algebraic equations  -  Closed form solutions  -  Complex matrices  -  Efficient algorithm  -  Error accumulation  -  Floating-point calculations  -  Inverse kinematics algorithms  -  Linear combinations  -  Online robots  -  Real time performance
  Classification code:  723 Computer Software, Data Handling and Applications  -  731.5 Robotics  -  731.6 Robot Applications  -  921 Mathematics  -  921.1 Algebra  -  931.1 Mechanics
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

254. Accession number:  20092912201645
  Title:  Numerical simulation of thermal profiles in spatial and temporal field for natural ventilated glasshouse
  Authors:  Cheng, Xiuhua1, 2 ; Mao, Hanping1 ; Wu, Delin1, 3 ; Li, Benqing1 
  Author affiliation:  1  Key Lab. of Modern Agricultural Equipment and Technology Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
  2  College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
  3  Engineering College, Anhui Agricultural University, Hefei 230006, China
  Corresponding author:  Mao, H. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  179-183
  Language:  Chinese
  ISSN:  10001298
  CODEN:  NUYCA3
  Document type:  Journal article (JA)
  Publisher:  Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:  The temperature profiles in spatial and temporal field inside the glasshouse are coupled to outside climates. Especially, the discrete ordinate (DO) radiation model was applied to solve the temperature profiles inside the glasshouse. The 3-D numerical simulation was done based on the CFD technique for the natural ventilated Venlo glasshouse, and the measurement was conducted to validate the CFD model. The results showed that the simulation values agreed well with test values about the average temperature in the empty glasshouse for the different time, the max relative error and the average error was 11.3% and 7.6%, respectively. The spacial temperature grades were obvious inside the glasshouse. A homogeneous temperature field was obtained at crop level, the average temperature was about 28.5-28.8°C. The DO radiation model was proved effective in modeling the effect of solar radiation on the thermal climates inside the glasshouse.
  Number of references:  10
  Main heading:  Simulators
  Controlled terms:  Dissolved oxygen sensors  -  Sun  -  Temperature control  -  Three dimensional
  Uncontrolled terms:  3-D numerical simulation  -  Average errors  -  Average temperature  -  CFD models  -  CFD technique  -  Discrete ordinates  -  Glasshouse  -  Heat climates  -  Numerical simulation  -  Radiation model   -  Radiation models  -  Relative errors  -  Simulation  -  Temperature field  -  Temperature profiles  -  Thermal profiles
  Classification code:  801 Chemistry  -  731.3 Specific Variables Control  -  723.5 Computer Applications  -  671 Naval Architecture  -  662.1 Automobiles  -  902.1 Engineering Graphics  -  657.2 Extraterrestrial Physics and Stellar Phenomena  -  655.2 Satellites  -  654.1 Rockets and Missiles  -  621 Nuclear Reactors  -  462.1 Biomedical Equipment, General  -  657.1 Solar Energy and Phenomena
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

268. Accession number:  20092912201610
  Title:  Experiment and simulation on combustion characteristics of a four cylinder SI engine fueled with hydrogen and gasoline
  Authors:  Yan, Hao1 ; Ji, Changwei1 ; Wang, Shuofeng1 
  Author affiliation:  1  College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022, China
  Corresponding author:  Yan, H. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  6-9 42
  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:  SI engine experiments were carried out by using hydrogen at equivalent ratio of 0.8, 0.6, and 0.4 and by using gasoline at stoichiometric condition, respectively. Simulation models for gasoline and hydrogen were built based on AVL Boost and calibrated experimentally. The simulation study shows that hydrogen can increase burning rate of hydrogen-air mixture, and shorten combustion duration markedly. As a result, cylinder pressure and thermal efficiency increase accordingly. Hydrogen engine can operate at the equivalence ratio of near 0.4 smoothly and the performance of SI engine is greatly improved.
  Number of references:  9
  Main heading:  Engine cylinders
  Controlled terms:  Combustion  -  Cylinders (shapes)  -  Engines  -  Experiments  -  Gasoline  -  Hydrogen  -  Smoke  -  Thermochemistry
  Uncontrolled terms:  Burning rate  -  Combustion characteristics  -  Combustion duration  -  Cylinder pressures  -  Equivalence ratios  -  Equivalent ratios  -  Gasoline engine  -  Hydrogen engine  -  Hydrogen-air mixture  -  SI Engines   -  Simulation  -  Simulation model  -  Simulation studies  -  Thermal efficiency
  Classification code:  901.3 Engineering Research  -  804 Chemical Products Generally  -  801.4 Physical Chemistry  -  801.3 Colloid Chemistry  -  654.2 Rocket Engines  -  641.1 Thermodynamics  -  617.3 Steam Engines  -  612.1.1 Internal Combustion Engine Components  -  612 Engines  -  523 Liquid Fuels  -  521.1 Fuel Combustion  -  451.1 Air Pollution Sources  -  408.2 Structural Members and Shapes
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

269. Accession number:  20092912201616
  Title:  Design of road simulation shaking table control system based on rapid prototyping of DSP algorithms using Simulink
  Authors:  Shen, Gang1 ; Huang, Qitao1 ; He, Jingfeng1 ; Cong, Dacheng1 ; Han, Junwei1 ; Pi, Yadong2 
  Author affiliation:  1  School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
  2  Pipeline Research Institute of CNPC, Langfang 056000, China
  Corresponding author:  Shen, G. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  37-42
  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 road simulation shaking table has a high requirement on real-time performance and rapidity. At first the integral scheme was designed. On the hand of hardware, the control system used TMS320C2812 to acquire the analogous and digital variables, and used TMS320C6713 to operate algorithm and communicate with embedded processor S3C2410 with dual-RAM in order to improve real-time and rapidity of the system. This paper presented the implementation of a rapid prototyping control system, which involves the design of DSP algorithms using Matlab/Simulink blocksets to setup the Simulink module of the road simulation shaking table. This module can automatically generate code in the CCS integrated development environment, and download executable code to the Texas Instruments' TMS320C2812 and TMS320C6713.
  Number of references:  13
  Main heading:  Control
  Controlled terms:  Concurrent engineering  -  Control system analysis  -  Digital signal processors  -  Job analysis  -  Rapid prototyping  -  Roads and streets  -  Web services
  Uncontrolled terms:  DSP algorithm  -  DSP rapid prototyping  -  Embedded processors  -  Executable codes  -  Integrated development environment  -  MATLAB /simulink  -  Real time performance  -  Road simulation shaking table  -  S3C2410  -  Shaking tables   -  Simulink  -  Texas Instruments'  -  TMS320C2812
  Classification code:  913.6 Product Development; Concurrent Engineering  -  913.1 Production Engineering  -  912 Industrial Engineering and Management  -  903.4 Information Services  -  732 Control Devices  -  731.1 Control Systems  -  731 Automatic Control Principles and Applications  -  723.5 Computer Applications  -  723.2 Data Processing and Image Processing  -  723 Computer Software, Data Handling and Applications  -  722.4 Digital Computers and Systems  -  716.1 Information Theory and Signal Processing  -  406.2 Roads and Streets
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

287. Accession number:  20092912201644
  Title:  Decision-making on greenhouse CO2 control quantity based on information fusion
  Authors:  Zhang, Rongbiao1 ; Xiang, Meijing1 ; Li, Pingping2 ; Bai, Bin1 
  Author affiliation:  1  School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
  2  Provincial Key Laboratory of Modern Agricultural Equipment and Technology, Jiangsu University, Zhenjiang 212013, China
  Corresponding author:  Zhang, R. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  175-178
  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 view of the factors affecting profit maximization, such as the relation between photosynthetic rate and CO2 concentration in greenhouse, the plant market price and the cost of CO2 enrichment, a decision-making method for CO2 control quantity was presented to achieve the profit maximization. Taking lettuce planting as an example, a non-linear model was set up for forecasting plant growth rate by neural network, and a market price model was established for forecasting plant market price by polynomial fitting function. In terms of the above two models and the cost of CO2 enrichment, the optimal set-point of CO2 concentration was found out. According to the experimental data of lettuce growth and the seasonal changes of market prices from 2004-2006 offered by Ling Jiatang wholesale market, prediction models were established and finally information fusion was achieved, which provided a theory for the decision-making of CO2 control quantity in greenhouse control system.
  Number of references:  12
  Main heading:  Decision making
  Controlled terms:  Agriculture  -  Carbon monoxide  -  Commerce  -  Costs  -  Decision theory  -  Greenhouses  -  Information fusion  -  Mathematical models  -  Optimization  -  Plant life extension   -  Set theory
  Uncontrolled terms:  CO2 control quantity  -  Decision-making method  -  Experimental data  -  Lettuce growth  -  Market price  -  Non-linear model  -  Optimal sets  -  Photosynthetic rate  -  Plant growth  -  Polynomial fitting functions   -  Prediction model  -  Profit maximization  -  Seasonal changes  -  Wholesale markets
  Classification code:  912.1 Industrial Engineering  -  912.2 Management  -  921 Mathematics  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory  -  921.5 Optimization Techniques  -  922.2 Mathematical Statistics  -  961 Systems Science  -  911.4 Marketing  -  402.1 Industrial and Agricultural Buildings  -  804.2 Inorganic Compounds  -  821 Agricultural Equipment and Methods; Vegetation and Pest Control  -  821.6 Farm Buildings and Other Structures  -  903.1 Information Sources and Analysis  -  911 Cost and Value Engineering; Industrial Economics  -  911.2 Industrial Economics
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

288. Accession number:  20092912201650
  Title:  Established formulas for trapped-oil area and relief-load area of external spur-gear pump
  Authors:  Li, Yulong1, 2 ; Liu, Kun1 
  Author affiliation:  1  College of Automobile and Mechanical Engineering, Hefei University of Technology, Hefei 230009, China
  2  Department of Mechanical Engineering, Hefei University, Hefei 230022, China
  Corresponding author:  Liu, K. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  203-207
  Language:  Chinese
  ISSN:  10001298
  CODEN:  NUYCA3
  Document type:  Journal article (JA)
  Publisher:  Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:  In order to study quantitatively the trapped-oil phenomenon, with distance between meshing point and nodal point as a variable, a formula for calculating trapped-oil area and a fit formula for calculating relief-load area were derived from the geometrical relationship of gear transmission and positional relationship of relief groove. The calculated results were compared with the measured results from an accurate 3-D model. The results indicated that trapped-oil area and relief-load area could be expressed by a parabola with different index; simplified transition curve is feasible for calculating the two areas; fitting constant derived could be directly used aimed at different tooth number and module for calculating relief-load area. Finally, the two area-formulas were proved feasible to be used for forecasting the trapped oil pressure.
  Number of references:  6
  Main heading:  Electric load forecasting
  Controlled terms:  Curve fitting  -  Gear pumps  -  Pumps  -  Three dimensional
  Uncontrolled terms:  3D models  -  External spur-gear pump  -  Fit formula  -  Fitting constants  -  Gear transmissions  -  Geometrical relationship  -  Measured results  -  Nodal points  -  Oil pressures  -  Positional relationship   -  Relief groove  -  Relief-load area  -  Tooth number  -  Transition curves  -  Trapped-oil area
  Classification code:  922.2 Mathematical Statistics  -  921.6 Numerical Methods  -  921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory  -  902.1 Engineering Graphics  -  723.5 Computer Applications  -  706.1 Electric Power Systems  -  618.2 Pumps
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

289. Accession number:  20092912201628
  Title:  Optimal design of wind energy conversion system based on power factory
  Authors:  Wu, Jialiang1 ; Li, Chengfeng1 
  Author affiliation:  1  Sany Electric Company, Beijing 102206, China
  Corresponding author:  Wu, J. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  94-97
  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 design method of wind energy conversion system based on the concept of power factor is proposed. The optimal power energy and electricity quality are considered as optimization objects. The blades are extended to improve power out-put at low wind speed and shrunk with regulating mechanism at high wind speed to adjust power out-put. Taking the rated wind speed, the maximal length of an extended blade, the minimal length of a shrunk blade and the central radius of a blade as optimization variables, an optimization model of the wind turbine is proposed to obtain optimal design parameters using genetic algorithm. Finally, the availability of optimal design of wind energy conversion system is validated by a case of wind turbine.
  Number of references:  6
  Main heading:  Wind power
  Controlled terms:  Availability  -  Design  -  Electric power factor  -  Energy conversion  -  Genetic algorithms  -  Optimal systems  -  Optimization  -  Wind effects  -  Wind turbines
  Uncontrolled terms:  Design method  -  Electricity quality  -  High wind speed  -  Low wind speed  -  Optimal design  -  Optimal design parameters  -  Optimal power  -  Optimization models  -  Optimization variables  -  Power factors   -  Telescopic blades  -  Wind energy conversion system  -  Wind speed
  Classification code:  723 Computer Software, Data Handling and Applications  -  731.1 Control Systems  -  902.1 Engineering Graphics  -  961 Systems Science  -  913.1 Production Engineering  -  921 Mathematics  -  921.5 Optimization Techniques  -  913.5 Maintenance  -  706 Electric Transmission and Distribution  -  703.1 Electric Networks  -  408 Structural Design  -  408.1 Structural Design, General  -  443.1 Atmospheric Properties  -  525.5 Energy Conversion Issues  -  615.8 Wind Power (Before , use code )  -  701.1 Electricity: Basic Concepts and Phenomena
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

290. Accession number:  20092912201654
  Title:  Packaging cans inner surface inspection system based on multivariate image analysis
  Authors:  Wang, Xuanyin1 ; Liang, Dongtai1 
  Author affiliation:  1  State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China
  Corresponding author:  Wang, X. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  222-226
  Language:  Chinese
  ISSN:  10001298
  CODEN:  NUYCA3
  Document type:  Journal article (JA)
  Publisher:  Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:  In order to improve the accuracy and reliability of defect detection for packaging cans production lines, an inner surface inspection system with a single camera was studied. By using morphological region extraction algorithms the inspection region of interest image can be obtained from the whole inner image. For defect feature detection an approach based on multivariate image analysis (MIA) was proposed. To cancel the effect of seam regions in the inner images, a method of images fusion was implemented to form the ring-like good sample image without seam region. By stacking both the ring-like good sample images and the test image, the multivariate test images were constructed with their overlapping part. By using MIA technique with principal component analysis (PCA), the principal component scores of the multivariate test images were obtained. As the feature space for defect detection the Q-statistic image was derived from the residuals which were left after the extraction of the first PC and noise. The surface defects can be effectively detected using an appropriate threshold. The experimental results show that the proposed inspection system has less sensitivity to the inhomogeneous of illumination, and has more robustness and reliability with pseudo reject rate reducing to 2%.
  Number of references:  10
  Main heading:  Surface defects
  Controlled terms:  Computer vision  -  Feature extraction  -  Image analysis  -  Inspection  -  Inspection equipment  -  Multivariant analysis  -  Principal component analysis
  Uncontrolled terms:  Defect detection  -  Defect inspection  -  Feature detection  -  Feature space  -  Inner surface inspection  -  Inspection system  -  Method of images  -  Multivariate image analysis  -  Principal Components  -  Production line   -  Q-statistic  -  Region extraction  -  Region-of-interest images  -  Single cameras  -  Statistic images  -  Test images
  Classification code:  951 Materials Science  -  741.2 Vision  -  751.1 Acoustic Waves  -  913.3.1 Inspection  -  922 Statistical Methods  -  922.2 Mathematical Statistics  -  931.2 Physical Properties of Gases, Liquids and Solids  -  741.1 Light/Optics  -  731.6 Robot Applications  -  723.5 Computer Applications  -  723.2 Data Processing and Image Processing  -  716 Telecommunication; Radar, Radio and Television  -  421 Strength of Building Materials; Mechanical Properties  -  741 Light, Optics and Optical Devices
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

291. Accession number:  20092912201622
  Title:  Design of locust pneumatic capturing machine for artificial raised locusts in net house
  Authors:  Zhu, Zhiwei1 ; Zhang, Xiaohui1 ; Liu, Yusheng2 ; Hou, Cunliang1 ; Li, Xiaozhen1 ; Song, Tao1 
  Author affiliation:  1  College of Mechanical and Electrical Engineering, Shandong Agricultural University, Taian 271018, China
  2  College of Plant-Protecting, Shandong Agricultural University, Taian 271018, China
  Corresponding author:  Zhang, X. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  67-71
  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 capturing artificial raised locusts in net house, a cyclone locusts capturing machine is designed. By using CFD software Fluent the airflow field in the suction nozzle and separate device is simulated. The test results of the sample machine indicated that when the inclination angle of suction nozzle was 75°, the airflow speed of the suction nozzle was 14 m/s, the distance between the suction nozzle and ground was 40 mm and the forward speed of the capturing machine was 0.4 m/s, high rate capturing and low rate of break up were got. When practically working in locusts artificial raising net house, the airflow speed of the suction nozzle and the forward speed of the capturing machine were adjusted according to the distribution density of locusts on the ground, to improve the capturing efficiency and reduce the energy consumption.
  Number of references:  11
  Main heading:  Machine design
  Controlled terms:  Fluid structure interaction  -  Houses  -  Nozzles  -  Pneumatics  -  Speed
  Uncontrolled terms:  Air flow fields  -  Airflow Field Simulation  -  Airflow speed  -  Artificial Raising  -  Break-up  -  CFD softwares  -  Distribution density  -  Energy consumption  -  Forward speed  -  High rate   -  Inclination angles  -  Locust  -  Low rates  -  Net House  -  Separate devices  -  Suction nozzles  -  Test results
  Classification code:  402.3 Residences  -  601 Mechanical Design  -  631.1 Fluid Flow, General  -  632.3 Pneumatics  -  931.1 Mechanics
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

305. Accession number:  20092912201618
  Title:  Automatic search of pareto solutions of multi-objective for rotary transplanting mechanism kinematics
  Authors:  Yu, Gaohong1 ; He, Yan1 ; Chen, Jianneng1 ; Zhao, Yun1 
  Author affiliation:  1  College of Machine and Automation Controlling, Zhejiang Sci-Tech University, Hangzhou 310018, China
  Corresponding author:  Zhao, Y. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  47-52
  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:  Aiming at the problem of multi-objective, nonlinearity, interaction and fuzziness of transplanting mechanism of rice transplanter in optimization process, calculation model of kinematical parameter that could satisfy the performance requirements for transplanting seedlings was established. Firstly, by blurring the performance requirement, the membership was obtained and interference judgment method was put forward. Then the optimization model was built up, which took the maximum of every membership as the object function, and adopted motion non-interference as the restrictive condition. Based on the optimal result, the solution was expanded as an interval and the interval reaching was converted as multi-objective optimization. Then automatic search of the non-inferior solution was realized by coding the optimization program with Visual Basic 6.0. The results showed that by using the method it could quickly search the interval that could meet the kinematical performance requirement and it was easier and more efficient to manipulate than human-computer conversation.
  Number of references:  10
  Main heading:  Multiobjective optimization
  Uncontrolled terms:  Duplicate optimization  -  Interval searching  -  Multi-objective  -  Numeric  -  Rotary transplanting mechanism
  Classification code:  921.5 Optimization Techniques
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

308. Accession number:  20092912201619
  Title:  DEM analysis of the resistances applied on furrow openers
  Authors:  Yu, Jianqun1 ; Qian, Libin1 ; Yu, Wenjing2 ; Pan, Shiqiang1 ; Fang, Ying3 ; Fu, Hong2 
  Author affiliation:  1  School of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
  2  College of Computer Science and Technology, Jilin University, Changchun 130012, China
  3  Testing Science and Experiment Center, Jilin University, Changchun 130026, China
  Corresponding author:  Fu, H. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  Pages:  53-57
  Language:  Chinese
  ISSN:  10001298
  CODEN:  NUYCA3
  Document type:  Journal article (JA)
  Publisher:  Chinese Society of Agricultural Machinery, No. 1 Beishatan Deshengmen Wai, Beijing, 100083, China
  Abstract:  In order to analyze the factors that affect the performance of a furrow opener, the two-dimensional DEM (discrete element method) analyzing models of two types of furrow openers and soil particles were built up. Through changing the CAD models of furrow openers, for each type of furrow openers, the operating processes and resistances in three kinds of soils with different moisture content at three different velocities and depths were analyzed by using the DEM. The performance of the openers was tested at each operating states in lab. The simulation results is in good correlation with the experimental results and the relative errors are within 10%-20%. It can be proved that it's feasible and favourable to analyze the performances of furrow openers by using the DEM and it provides a new method to study and design furrow openers.
  Number of references:  7
  Main heading:  Geologic models
  Controlled terms:  Computer aided design  -  Finite difference method  -  Soils
  Uncontrolled terms:  CAD models  -  Digital design  -  Discrete element method  -  Discrete element methods  -  Furrow openers  -  Good correlations  -  Moisture contents  -  Operating process  -  Operating state  -  Relative errors   -  Simulation result  -  Soil particles
  Classification code:  481.1 Geology  -  483.1 Soils and Soil Mechanics  -  723.5 Computer Applications  -  921.6 Numerical Methods
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.

320. Accession number:  20092912201626
  Title:  Analysis and optimization of main influencing parameters for water-hammer prevention characteristic of air valves
  Authors:  Liu, Zhiyong1 ; Liu, Meiqing1 
  Author affiliation:  1  School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China
  Corresponding author:  Liu, Z. ([email protected]) 
  Source title:  Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
  Abbreviated source title:  Nongye Jixie Xuebao
  Volume:  40
  Issue:  6
  Issue date:  June 2009
  Publication year:  2009
  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:  The main influencing parameters for water-hammer prevention characteristic of air valves are analyzed through experiment. The result indicates that the air valve with reasonable size and installation position can prevent high water hammer pressure caused by water column separation. However, the prevention effect is impressible to the size and installation position of air valve: too large size will cause large pressure during the venting process, while too little size can not obtain prevention effect for insufficient air quantity and slow intake speed. So the air valve should have rapid intake speed and slow venting speed. For the experimental system in this study, the air valve should be installed in the position where the water column separation occurs firstly. Based on the analysis result, the optimization model for the air valve parameters and closure procedure of pump outlet valve is set up and solved by using genetic arithmetic. In the end, the above optimization method is used for the water-hammer prevention of a practical water-supply project and the suggestion of suitable prevention measure is proposed.
  Number of references:  8
  Main heading:  Water analysis
  Controlled terms:  Hammers  -  Meats  -  Optimization  -  Pressure effects  -  Public utilities  -  Size separation  -  Tools  -  Valves (mechanical)  -  Water hammer  -  Water supply
  Uncontrolled terms:  Air valves  -  Analysis results  -  Experimental system  -  Genetic arithmetic  -  High water  -  Influencing parameters  -  Installation position  -  Large sizes  -  Optimization method  -  Optimization models   -  Outlet valve  -  Prevention measures  -  Venting process  -  Water columns
  Classification code:  631.1 Fluid Flow, General  -  632.2 Hydraulic Equipment and Machinery  -  706 Electric Transmission and Distribution  -  931.1 Mechanics  -  801 Chemistry  -  822.3 Food Products  -  921.5 Optimization Techniques  -  802.3 Chemical Operations  -  619.2.1 Tank Accessories  -  619.1.1 Pipe Accessories  -  445.2 Water Analysis  -  446.1 Water Supply Systems  -  601.2 Machine Components  -  603 Machine Tools  -  605 Small Tools and Hardware  -  605.2 Small Tools, Unpowered
  Database:  Compendex
  Compilation and indexing terms, ? 2009 Elsevier Inc.