2008年第39卷第8期共收錄42篇
1. Accession number:083711541033
Title:Experiment on improving bearing surface quality with nanometer chemical grind technology
Authors:Wu, Mingyuan; Jin, Yi; Yang, Ting
Author affiliation:He'nan University of Science and Technology, Luoyang 471003, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 186-188 198
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: A novel method was proposed to improve surface quality of bearing friction pair with nanometer grind technology. Using special nanometer material, mechanical grind and chemical abrasion were implemented at the same time. The grinding mechanism, characteristics of each grinding materials, and processing technology of new method were accounted in detail. With quantity of experiments on different kinds of bearings, measuring and analyzing surface morphology of friction pair, it is found that the chemical grinding method could effectively improve bearing's surface morphology, reduce running vibration and noise, and increase bearing's quality.
Number of references:6
Ei main heading:Surface morphology
Ei controlled terms:Bearings (structural) - Computer networks - Friction - Grinding (comminution) - Grinding (machining) - Surfaces - Tribology
Uncontrolled terms:Experiment - Nanocomposites - Nanometer composite plating film - Rolling bearing - Surface quality
Ei classification codes:401.1 Bridges - 408.2 Structural Members and Shapes - 604.2 Machining Operations - 606.2 Abrasive Devices and Processes - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 801.4 Physical Chemistry - 802.3 Chemical Operations - 931 Classical Physics; Quantum Theory; Relativity - 931.1 Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
2. Accession number:083711540992
Title:Combustion and emission characteristics of an engine fueled with hydrogen enriched nature gas of various blend ratios
Authors:Liu, Haiquan; Ma, Fanhua; Wang, Yu; Li, Yong; Wang, Junjun; Zhao, Shuli
Author affiliation:Tsinghua University, Beijing 100084, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 1-4 13
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:An experimental study on combustion and emission characteristics in a manifold-injection SI turbocharged HCNG engine with several HCNG blend ratios (0-50%) under a certain condition has been done. The results showed that with the HCNG blend ratio rising, the maximum brake toque timing (MBT) of the HCNG engine decreased and the indicted thermal efficiency increased. The lean operation limit was enlarged by increasing the HCNG blend ratio. The combustion duration and the ignition lag were both reduced with the HCNG blend ratio increasing. At last with raising the HCNG blend ratio, the exhaust NOx and CO raised, and contrarily the exhaust CH4 fell.
Number of references:9
Ei main heading:Ignition
Ei controlled terms:Combustion - Hydrogen - Injection (oil wells) - Leakage (fluid) - Thermochemistry
Uncontrolled terms:CNG engine - Emission - Hydrogen blend ratio - Blend ratios
Ei classification codes:452.1 Sewage - 452.3 Industrial Wastes - 483.1 Soils and Soil Mechanics - 511.1 Oil Field Production Operations - 521.1 Fuel Combustion - 619.1 Pipe, Piping and Pipelines - 641.1 Thermodynamics - 801.4 Physical Chemistry - 804 Chemical Products Generally
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
3. Accession number:083711540993
Title:Transient data acquisition system of the cool-starting diesel engine
Authors:Hu, Mingjiang; Wang, Zhong; Ye, Feifei; Qi, Liqiao
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 5-8
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: A sort of portable acquisition system about the dynamic parameter of the cool-starting diesel engine was developed. The data acquisition card was used by the system, which contained with start voltage sensor, start electric current sensor, rotate speed sensor and F/V. The real-time collection could be carried out to start voltage of the storage battery, start electric current of the electromotor, temperature of the electrolyte and rotate speed of the diesel engine by multi-channel, and the signals could also be storied, transacted and displayed at the same time. The system could conveniently compile interface and demarcate program by DASYLab. The test results show that the system is reliable, accurate and has good anti-jamming ability. It can meet the needs of the dynamic data acquisition for the cool-starting diesel engine greatly.
Number of references:7
Ei main heading:Data acquisition
Ei controlled terms:Computer networks - Data storage equipment - Diesel engines - Diesel locomotives - Electric batteries - Electric current measurement - Electric power supplies to apparatus - Mergers and acquisitions - Sensors - Speed
Uncontrolled terms:Diesel engine - Start parameter - Transient operations - Rotate speed
Ei classification codes:612.2 Diesel Engines - 682.1.2 Locomotives - 702.1 Electric Batteries - 713.5 Other Electronic Circuits - 715.2 Industrial Electronic Equipment - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 722.1 Data Storage, Equipment and Techniques - 723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 732.2 Control Instrumentation - 801 Chemistry - 912 Industrial Engineering and Management - 931.1 Mechanics - 942.2 Electric Variables Measurements
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
4. Accession number:083711540994
Title:Electronic control technology of cylinder pressure feedback in common rail diesel engine
Authors:Wang, Jun; Zhang, Youtong; Wang, Hongrong; Liu, Yongfeng; Huang, Jun
Author affiliation:Academy of Armored Forces Engineering, Beijing 100072, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 9-13
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: On the basis of brief analysis for cylinder pressure physical meaning, mechanism and sketch of electronic control based on cylinder pressure feedback was presented, pressure characteristic variable orienting to control was provided, cylinder pressure feedback has been obtained by means of polynomial fitting. Electronic control system with dual micro-processor based on MPC555 and DSP56F807 was designed, fiber-optical pressure sensor has been introduced to perform dynamic acquisition of cylinder pressure. Primary test on model 4100 diesel engine with high pressure common rail was made, testing result showed an availability of electronic control of common rail diesel engine based on cylinder pressure feedback.
Number of references:8
Ei main heading:Engine cylinders
Ei controlled terms:Computer networks - Cylinders (shapes) - Diesel locomotives - Electronics industry - Industrial electronics - Power electronics - Rails - Remote control - Servomechanisms - Technology transfer
Uncontrolled terms:Cylinder pressure - Diesel engine - Electronic control - Feedback control - Cylinder pressures
Ei classification codes:408.2 Structural Members and Shapes - 612.1.1 Internal Combustion Engine Components - 612.2 Diesel Engines - 681.1 Railway Plant and Structures, General - 682.1.2 Locomotives - 705 Electric Generators and Motors - 712 Electronic and Thermionic Materials - 713 Electronic Circuits - 713.5 Other Electronic Circuits - 714 Electronic Components and Tubes - 715 Electronic Equipment, General Purpose and Industrial - 715.2 Industrial Electronic Equipment - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 731.1 Control Systems - 732.1 Control Equipment - 901.4 Impact of Technology on Society - 911.2 Industrial Economics
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
5. Accession number:083711540995
Title:H2/H infinity mixed robust control and simulation for 4WS vehicle
Authors:Zhang, Xiaozu; Li, Hui; Cai, Shuangfei
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 14-17 156
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The uncertain model of the vehicle including roll and wheel rotation was established. By actively controlling the steering system angle and independently controlling the wheel brake torque, the integrated control design was carried out by using H2/H infinity mixed robust control theory based on LMI method and was compared with H2 control and H infinity control. The simulation results indicated that the H2/H infinity mixed robust control not only had robust stability to the system uncertainty, but also effectively curbed external disturbance and improved the system dynamic performance well.
Number of references:8
Ei main heading:Automobile parts and equipment
Ei controlled terms:Computer networks
Uncontrolled terms:Four wheel steering - Mixed robust control - Simulation - Vehicle - Steering systems
Ei classification codes:662.4 Automobile and Smaller Vehicle Components - 663.2 Heavy Duty Motor Vehicle Components - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
6. Accession number:083711540996
Title:Design of heavy truck AMT controller based on quantum framework
Authors:Li, Xiaojun; Zhang, Chengrui
Author affiliation:Shandong University, Ji'nan 250061, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 18-23
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: The behavior model that uses traditional finite state machine method often has the bad readability. In addition, it's difficult to expand and cut out the system function. So a new modeling approach based on quantum framework was put forward for embedded system development. The essential features and movement mechanism of quantum framework were introduced firstly. Then taking the heavy truck automated mechanical transmission as an example, developing methods and steps with QF technology for embedded system were introduced. The example study indicated that the application of QF technology in embedded system development could significantly increase the efficiency of design, code readability and maintainability of the system.
Number of references:7
Ei main heading:Embedded systems
Ei controlled terms:Computer networks - Integrated circuits - Maintainability
Uncontrolled terms:Automated mechanical transmission - Finite state machine - Heavy truck - Quantum framework - Embedded system development
Ei classification codes:714.2 Semiconductor Devices and Integrated Circuits - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 913.5 Maintenance
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
7. Accession number:083711540997
Title:Design and simulation of electromechanical brake system
Authors:Yang, Kun; Li, Jing; Guo, Lishu; Li, Youde
Author affiliation:Jilin University, Changchun 130025, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 24-27
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: The actuator and controller of electromechanical brake (EMB) were designed. The simulation model of EMB was built in Matlab/Simulink. The controller of motor adopted three loops control architecture with cascaded force, speed and current control loops, and the design method of controller was given. Computer simulation on three-typical-condition of step input, half cosine input and pulse input has been carried out. The results showed that the brake pressure of EMB could follow the target accurately and the performance of EMB is good. The comparison of hydraulic brake and EMB showed that EMB could regulate brake force more quickly and accurately.
Number of references:6
Ei main heading:Computational methods
Ei controlled terms:Computer networks - Hydraulic brakes - Hydraulic machinery
Uncontrolled terms:Automobiles - Design - Electromechanical brake - Simulation - Brake system
Ei classification codes:602 Mechanical Drives and Transmissions - 632.2 Hydraulic Equipment and Machinery - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 921 Mathematics
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
8. Accession number:083711540998
Title:Ride comfort based on the rigid-flexible coupling model of suspension
Authors:Zhang, Lijun; Zhang, Yu; Zhao, Liang
Author affiliation:Liaoning University of Technology, Jinzhou 121001, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 28-32
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: Based on multi-body dynamics, a whole car model with rigid-flexible coupling suspension that included the flexibility of lower arms and stabilizer bars was established by using ADAMS/Car software, and the flexibility of elements has been obtained with FEM. The analyses for the accelerations of floor and lower arm, the dynamic deflection of suspension, and the dynamic deformation were carried out. The research result showed that the PSD of vertical acceleration of body and the PSD of vertical acceleration of lower arm reduced by 21.5% and 71.3% respectively, compared with rigid model. In addition, the dynamic load of tire decreased by 21.5%, and the working space of suspension increased form 15% to 20%. The research result also showed that the difference between rigid body model and rigid-flexible coupling model rose with velocity. The analysis demonstrated that the flexibility of suspension components could not be neglected.
Number of references:7
Ei main heading:Suspensions (components)
Ei controlled terms:Flexible couplings - Model automobiles - Power spectral density - Pulse shaping circuits
Uncontrolled terms:Multi-body dynamics - Ride comfort - Rigid-flexible coupling - Suspension - Vehicle
Ei classification codes:601.2 Machine Components - 602.2 Mechanical Transmissions - 662.1 Automobiles - 711 Electromagnetic Waves - 713.4 Pulse Circuits - 751.1 Acoustic Waves - 921 Mathematics - 941 Acoustical and Optical Measuring Instruments
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
9. Accession number:083711540999
Title:Simulation and analysis on semi-active control technology of multi-axle vehicle suspension
Authors:Zhu, Xuebin; Gao, Feng
Author affiliation:Beihang University, Beijing 100083, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 33-37 61
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: From engineering point of view, semi-active suspension system can realize whole vehicle attitude control so as to improve driving safety. Based on the synthetically analysis of multi-axle vehicle kinematic characteristics requirements, a kind of whole vehicle attitude control method was put forward according to skyhook damping principle. At the same time, fuzzy logic method was adopted to monitor the ride quality. From the contrast analysis of six-axle vehicle simulation results, whole vehicle roll angle was reduced with the semi-active suspension in lane change and turn brake, the ride quality was also improved in random input experimental simulation.
Number of references:7
Ei main heading:Quality control
Ei controlled terms:Attitude control - Automobile parts and equipment - Automobile suspensions - Axles - Computer networks - Control system analysis - Control theory - Fuzzy logic - Navigation - Spatial variables control - Suspensions (components) - Vehicle suspensions - Vehicles - Wheels
Uncontrolled terms:Close-loop simulation - Multi-axle vehicle - Semi-active suspension - Vehicle - Ride quality
Ei classification codes:431.5 Air Navigation and Traffic Control - 432 Highway Transportation - 434.4 Waterway Navigation - 601.2 Machine Components - 632.1 Hydraulics - 652.3 Aircraft Instruments and Equipment - 654.1 Rockets and Missiles - 655.1 Spacecraft, General - 656.1 Space Flight - 662.4 Automobile and Smaller Vehicle Components - 663.2 Heavy Duty Motor Vehicle Components - 682.1.1 Railroad Cars - 716 Telecommunication; Radar, Radio and Television - 716.3 Radio Systems and Equipment - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 731.1 Control Systems - 731.3 Specific Variables Control - 913.3 Quality Assurance and Control
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
10. Accession number:083711541000
Title:Algorithm for front wheel slip ratio in the traction control system when turning
Authors:Yang, Cai; Song, Jian; Zhou, Yanxia
Author affiliation:Tsinghua University, Beijing 100084, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 38-40
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: The driving wheel slip ratio calculation by using rear wheel speed as reference speed could lead to a calculation mistake and wrong intervention of traction control system when vehicle was cornering. The term of front wheel reference speed was introduced for calculating driving wheel slip ratio under cornering situation. The extraction method by using the yaw rate signal and the steering wheel angle compensation method by using the front wheel angle signal were introduced for calculating driving wheel slip ratio. Experimental results confirmed the effectiveness of these two algorithms, the former algorithm took 0.8 ms and the latter algorithm took 0.3 ms, and so the latter algorithm has been taken. Wrong intervention disappeared after the modification by the steering wheel angle compensation method.
Number of references:6
Ei main heading:Wheels
Ei controlled terms:Automobile parts and equipment - Automobile steering equipment - Boolean functions - Computer networks - Metal recovery - Speed - Traction (friction)
Uncontrolled terms:Algorithm - Slip ratio - Traction control system - Vehicle - Driving wheels
Ei classification codes:531 Metallurgy and Metallography - 601.2 Machine Components - 662.4 Automobile and Smaller Vehicle Components - 663.2 Heavy Duty Motor Vehicle Components - 682.1.1 Railroad Cars - 682.1.2 Locomotives - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 921.1 Algebra - 931.1 Mechanics
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
11. Accession number:083711541001
Title:Vibration isolation suspension system for commercial vehicle full-float cab based on theory of rigid-flexible dynamics
Authors:Song, Fabao; Ma, Li; Zhang, Yulong; Zhu, Zhuying
Author affiliation:Wuhan University of Technology, Wuhan 430070, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 41-43 32
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The vibration isolating suspension of the full-float cab in commercial vehicle has been studied based on the frame flexibility. The rigid-flexible multi-body vehicle vibration simulation model including the flex frame was used in simulation with ADAMS and ANSYS software. Furthermore, the ride comfort of full-float cab in a whole commercial vehicle was studied by changing the flexibilities of frame. The results showed that the ride comfort of full-float cab depended on the natural frequency and corresponding vibration mode of the frame, the ride comfort of full-float cab would become terrible if the first natural frequency of frame was less than 10 Hz or lower. It offered a valuable method to the match of the full-float vehicle parameter and the design of frame.
Number of references:6
Ei main heading:Automobile frames
Ei controlled terms:Automobile parts and equipment - Automobile suspensions - Automobiles - Buses - Computer networks - Lattice vibrations - Natural frequencies - Suspensions (components) - Taxicabs - Trucks - Vehicles - Vibrations (mechanical)
Uncontrolled terms:Full-float cab - Isolation vibration - Rigid-flexible multi-body systems - Simulation - Vehicl
Ei classification codes:432 Highway Transportation - 432.2 Passenger Highway Transportation - 601.2 Machine Components - 632.1 Hydraulics - 662.1 Automobiles - 662.4 Automobile and Smaller Vehicle Components - 663.1 Heavy Duty Motor Vehicles - 663.2 Heavy Duty Motor Vehicle Components - 711.1 Electromagnetic Waves in Different Media - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 741.1 Light/Optics - 751.1 Acoustic Waves - 931.1 Mechanics - 933.1.1 Crystal Lattice
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
12. Accession number:083711541002
Title:Experiment on steering power ratio of tracked vehicles adopting new differential steering mechanism
Authors:Chi, Yuan; Jiang, Enchen
Author affiliation:Northeast Agricultural University, Harbin 150030, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 44-47 53
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: A new differential steering mechanism used in tracked vehicle that adopted hydro-mechanical double power has been studied. Calculating method and experimental method of steering power ratio for tracked vehicle of differential steering were presented and the model has been tested. The experiments showed that the new mechanism could realize tracked vehicle turning at random radius, and that no brake power loss when turning at small radius through two tracks rotate in reverse directions. The steering power ratio changed smoothly with inputting rotate speed and turning radius, the ratio is from 1.63 to 2.64 when radius is from 2.38 m to 0.6 m within big radius, the ratio is from 3.09 to 4.78 when radius is from 0.36 m to 0.25 m within small radius. A conclusion can be drawn that the maximum steering power ratio is approach 4.78 when tracked vehicle adopting the steering mechanism because the radius is equal to 0.25 m that approach the minimum radius in pivot steering.
Number of references:7
Ei main heading:Steering
Ei controlled terms:Automobile steering equipment - Experiments - Mechanisms - Turning - Vehicles
Uncontrolled terms:Differential steering mechanism - Experiment - Steering power ratio - Tracked vehicle - Tracked vehicles
Ei classification codes:432 Highway Transportation - 601.3 Mechanisms - 604.2 Machining Operations - 662.4 Automobile and Smaller Vehicle Components - 663.2 Heavy Duty Motor Vehicle Components - 671.2 Ship Equipment - 901.3 Engineering Research
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
13. Accession number:083711541003
Title:Design and experiment on power driven rootstalk cutting mechanism of ridge-till and no-till corn planter
Authors:Sun, Rongrong; Li, Wenying; Li, Hongwen
Author affiliation:China Agricultural University, Beijing 100083, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 48-53
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: A power driven cutting mechanism of ridge-till and no-till corn planter was designed to treat rootstalk during no-till plant corn in the areas of one crop a year. Three rows blades are fitted on the axis for one ridge in this mechanism. Three kinds of spindle-harnesses and three kinds of blade-installations were designed in order to find out a most reasonable form. The soil bin experimentation showed that the mechanism has a good ability to cut corn rootstalks, when the running speed is 0.75 km/h, the rotor speed is 150 r/min and the blade-installation is ZH2. The experimentation for choosing spindle-harnesses showed that the second spindle harness which has better cutting ability and lower power consumption is the best choice.
Number of references:9
Ei main heading:Machine design
Ei controlled terms:Installation - Speed
Uncontrolled terms:Corn - Design - Experiment - No-till planter - Ridge-till - Rootstalk cutting mechanism
Ei classification codes:601 Mechanical Design - 931.1 Mechanics
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
14. Accession number:083711541004
Title:Design of main working parts of 4LYB12.0 rape combine harvester
Authors:Xu, Lizhang; Li, Yaoming; Ma, Chaoxing; He, Zengfu; Lu, Feng
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 54-57 88
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: With the improvement of variety and the extension of applying field, the rape planting area increased continuously in recent years. Rape harvesting by hand consumed much time and labor, which resulted in high loss rate of rapeseed and the hard labor intensity. And the existing rape harvesters were mainly refitted from rice-wheat harvester and the working performance was still at a low level. At the end of 2007, the ratio of machine harvest rape area was only 2.6% in China. The structure of model 4LYB12.0 whole-feeding rape combine harvester was introduced. The design proceeding of the key parts including header, threshing and separating unit and cleaning unit were described in detail. Experiments were made in Zhenjiang, Jiangsu province, which showed that the total loss rate was 5.7%, broken rate 0.3%, and impurity rate 2%.
Number of references:10
Ei main heading:Combines
Ei controlled terms:Harvesting
Uncontrolled terms:Design - Rape - Working parts - Rape combine - Loss rates
Ei classification codes:821.1 Agricultural Machinery and Equipment - 821.3 Agricultural Methods
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
15. Accession number:083711541005
Title:Design and experiment on multifunctional root-tuber crops combine
Authors:Hu, Zhichao; Peng, Baoliang; Yin, Wenqing; Wang, Haiou; Ji, Fulai; Xie, Huanxiong
Author affiliation:Nanjing Agricultural University, Nanjing 210031, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 58-61
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:A type of multifunctional combine was designed for the harvesting of root-tuber crops. The overall structural configuration, operating process, technical characteristics, and the structure design of key components were dissertated respectively. The combine was composed by the components including power chassis, stalk guiding device, digging device, stalk clamping and conveying device, fruit picking device, cleaning system, fruit collecting system etc. In order to harvest different kinds of root-tuber crops (peanut, garlic, onion etc.), two exchangeable fruit picking parts (picking roller and wheel cutter device) were employed on the combine. The tested indexes for peanut and garlic were listed as follows: percent of peanut loss 2.3%, percent of embedded peanuts 0.3%, percent of broken peanuts 0.45%, peanut purity 99%, reliability coefficient 96.2%; percent of lost garlic 3.0%, percent of un-harvested garlic 0.50%, percent of broken garlic 1.5%.
Number of references:5
Ei main heading:Process engineering
Ei controlled terms:Agricultural products - Computer networks - Fruit juices - Fruits - Harvesting
Uncontrolled terms:Combines - Design - Experiment - Root-tuber crops - Tuber crops
Ei classification codes:716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and
Applications - 731 Automatic Control Principles and Applications - 821.3 Agricultural Methods - 821.4 Agricultural Products - 822.3 Food Products - 913.1 Production Engineering
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
16. Accession number:083711541006
Title:Design and experiment on the control system of electro-hydraulic plow depth of tractor hydraulic hitch mechanism
Authors:Du, Qiaolian; Xiong, Xicheng; Wei, Jianhua
Author affiliation:Zhejiang Normal University, Jinhua 321019, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 62-65
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: A tractor electro-hydraulic control system was designed and studied based on the plowing depth system's principle of tractor hydraulic hitch mechanism. An electro-hydraulic proportional valve was used as the master valve in this system. The mathematic model of the tractor electro-hydraulic control system was set up and then the characteristic of load control and position control was analyzed. Finally experimental research was performed. The experimental results showed that transient time of position regulation is 0.65 s, and its static error is 1.5 cm; the adjusting time of draft regulation is 7.5 s; the fluctuating scope is ±1 cm, when the plowing depth is 20 cm in draft and position regulation. This system could meet the challenge of plowing depth control system in formidable natural conditions, and the object of uniform plowing depth and work stability were achieved.
Number of references:11
Ei main heading:Control system stability
Ei controlled terms:Computer networks - Elastic moduli - Experiments - Fluid mechanics - Hydraulic machinery - Hydraulics - Machine design - Mathematical models - Mechanisms - Pressure control - Tractors (agricultural) - Tractors (truck)
Uncontrolled terms:Design - Electro-hydraulic control system - Experiment - Plow depth - Tractor
Ei classification codes:421 Strength of Building Materials; Mechanical Properties - 422.2 Test Methods - 601 Mechanical Design - 601.3 Mechanisms - 631.1 Fluid Flow, General - 632.1 Hydraulics - 632.2 Hydraulic Equipment and Machinery - 663.1 Heavy Duty Motor Vehicles - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 731.3 Specific Variables Control - 731.4 System Stability - 821.1 Agricultural Machinery and Equipment - 901.3 Engineering Research - 921 Mathematics - 931.1 Mechanics - 951 Materials Science
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
17. Accession number:083711541007
Title:Numerical simulation and experimental validation of the flow field in axial flow pump
Authors:Huang, Huanming; Gao, Hong; Shen, Feng; Du, Zhaohui
Author affiliation:Shanghai Jiaotong University, Shanghai 200240, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 66-69 148
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Based on the Navier-Stokes equation set and the standard k-ε turbulence model, the numerical simulation of the flow field in axial flow pump was conducted on the platform of commercial software CFX by using SIMPLEC method. The pump performance curves resulted from numerical simulation was verified with the experimental results; and then, the computational distribution of relative velocity and streamline in 90% blade span and the discharge region was compared with the results measured by PIV in the same positions, and they were in a good agreement, which indicated the validity and correctness of the numerical simulation. Furthermore, the flow features and the reasons caused efficiency fall of axial flow pump under different flow rates were analyzed, and the results provided some references to the internal flow analysis and the performance improvement of axial flow pump.
Number of references:8
Ei main heading:Flow simulation
Ei controlled terms:Axial flow - Computer simulation - Flow fields - Flow of fluids - Fluid dynamics - Fluid mechanics - Navier Stokes equations - Turbulence models
Uncontrolled terms:Axial flow pump - Experiment - Numerical simulation - PIV - Axial flow pumps
Ei classification codes:443.1 Atmospheric Properties - 631.1 Fluid Flow, General - 723.5 Computer Applications - 921.2 Calculus - 931.1 Mechanics
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
18. Accession number:083711541008
Title:Experiment on dual laterolog aspirating aerator
Authors:Zhou, Jianlai; Qiu, Baijing; Zheng, Ming
Author affiliation:Huaihai Institute of Technology, Lianyungang 222005, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 70-73
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: Orthogonal experiments were carried out to study the oxygen transfer performance of the dual laterolog aspirating aerator. The work has been focused on the improvement of oxygen-transfer power efficiency with respect to the varying of the aerator's major structural parameters. Effects of single and interaction among them of the four factors on oxygen-transfer power efficiency were investigated respectively. Meanwhile, optimal combination of the four factors on oxygen-transfer power efficiency was presented. It showed an appropriate combination of different factors may improve oxygen-transfer power efficiency effectively. The following summarized the detailed contributions that have been made in the research: (1)Ranking of main structural parameters impacting power efficiency is as follows: the location coefficient, section ratio, nozzle angle and throat-pipe aspect ratio. (2)Optimized structural parameters that were found in the research are the location coefficient R=0; section ratio m=4; nozzle angle a=30°; pipe aspect ratio β=10. (3)There is significantly interactive effect between location coefficient and section ratio.
Number of references:6
Ei main heading:Aspect ratio
Ei controlled terms:Electric logging - Nozzles - Oxygen - Pipe - Pressure drop
Uncontrolled terms:Aerator - Dual aspirator - Experiment - Power efficiency - Structural parameters
Ei classification codes:512.1.2 Development Operations - 619.1 Pipe, Piping and Pipelines - 631.1 Fluid Flow, General - 804 Chemical Products Generally - 931.1 Mechanics - 943 Mechanical and Miscellaneous Measuring Instruments
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
19. Accession number:083711541009
Title:Driver's fatigue evaluation and analysis in mechanized sowing work
Authors:Kong, Degang; Zhang, Shuai; Zhu, Zhenying; Yang, Mingdong
Author affiliation:Northeast Agricultural University, Harbin 150030, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 74-78
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: In order to manage farm machinery work system scientifically, the principles of ergonomics and a fatigue comprehensive evaluation method by heart rate and work time were proposed, and it was used for evaluating and analysis the tractor driver's fatigue in sowing work. The result showed that driving imported large power tractor in sowing work, the heart rate increase ratio is fairly low, and workload lies in light level, maximum acceptable work time (tmax) is between 14.2 h and 15.6 h, fatigue comprehensive assessment value f is between 1.21 and 1.48. While driving domestic Dongfanghong-1002-tractor, heart rate increase ratio is rather high, workload lies in normal level, tmax is 12.8 h, and f is 1.79. In real operation, the working time of the driver is longer than maximum work time.
Number of references:12
Ei main heading:Tractors (agricultural)
Ei controlled terms:Agricultural machinery - Computer networks - Ergonomics - Industrial engineering - Machinery - Tractors (truck)
Uncontrolled terms:Maximum work time - Sowing - Workload - Heart rate
Ei classification codes:461.4 Ergonomics and Human Factors Engineering - 601 Mechanical Design - 663.1 Heavy Duty Motor Vehicles - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 821.1 Agricultural Machinery and Equipment - 912.1 Industrial Engineering
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
20. Accession number:083711541010
Title:Metabolic regulation on L-lactic acid production by different aeration conditions in rhizopus oryzae fermentation system
Authors:Zheng, Zhi; Jiang, Shaotong; Luo, Shuizhong; Pan, Lijun; Li, Xingjiang
Author affiliation:Hefei University of Technology, Hefei 230009, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 79-83 134
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: The effect of different aeration conditions on fermentation product composition and correlative enzymes activities were investigated, the results indicated that the lactate production and lactate dehydrogenase (LDH) activity were both increased as the medium volumes increased from 10% to 30%, but the alcohol concentration and alcohol dehydrogenase (ADH) activity were both decreased. The maximum production of lactic acid and LDH activity was achieved in cultures shaken at 220 r/min while 160 r/min shaking speed resulted in a higher alcohol concentration and ADH activity. The lactic acid concentration and the activity of LDH were 67.5 g/L and 5.83 U/mL, respectively, which increased by 64.4% and 49.9% respectively by single film fermentation. The ethanol concentration and the activity of ADH increased by 30.0% and 25.5% respectively, by dual film sealed fermentation compared with single film fermentation.
Number of references:20
Ei main heading:Biochemical engineering
Ei controlled terms:Acids - Body fluids - Computer networks - Concentration (process) - Enzymes - Ethanol - Lactic acid - Organic acids - Organic polymers
Uncontrolled terms:Alcohol - Alcohol dehydrogenase - Fermentation - L-lactic acid - Lactate dehydrogenase - Rhizopus oryzae
Ei classification codes:461.2 Biological Materials and Tissue Engineering - 523 Liquid Fuels - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 801.2 Biochemistry - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds - 805.1.1 Biochemical Engineering - 815.1.1 Organic Polymers - 822.3 Food Products
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
21. Accession number:083711541011
Title:Experiment on mechanical properties of the seed nucleus of Ginkgo biloba
Authors:Wang, Xinzhong; Wang, Min
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 84-88
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: With consideration of several different factors of loading direction, the moisture content and loading type and so on, the mechanical properties of Ginkgo seed nucleus were studied by way of compression test. The crushing forces of Ginkgo seed nucleus were different in each orientation under the same moisture content, which were smallest in width and greatest in thickness, respectively. Moisture content had a significant impact in the compression crash of seed nucleus. The more moisture content was, the less clearance occurred to shell and nutlet, thus crashing easily. The nutlet deformation was expanded while the moisture content of nutlet was high, but the crushing force of nutlet was less. The studies indicate that the crushing force is (135.82±24.48)N when Ginkgo seed nucleus has moisture content of 27.66%. The intact nutlet will be obtained when the displacement of the compression head toward the nutlet is up to (2.4±0.5)mm while the allowable nutlet deformation of 2.23 mm is not exceeded.
Number of references:11
Ei main heading:Moisture
Ei controlled terms:Agricultural products - Compression testing - Crushing - Data compression - Deformation - Mechanical properties - Seed
Uncontrolled terms:Experiment - Ginkgo biloba - Moisture content - Seed nucleus
Ei classification codes:421 Strength of Building Materials; Mechanical Properties - 422 Strength of Building Materials; Test Equipment and Methods - 422.2 Test Methods - 443.1 Atmospheric Properties - 533.1 Ore Treatment - 716.1 Information Theory and Signal Processing - 722.3 Data Communication, Equipment and Techniques - 723.2 Data Processing and Image Processing - 801.4 Physical Chemistry - 802.3 Chemical Operations - 821.4 Agricultural Products - 931.1 Mechanics - 943 Mechanical and Miscellaneous Measuring Instruments - 951 Materials Science
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
22. Accession number:083711541012
Title:Effects of pulsed vacuum and ultrasound on mass transfer and quality of apples during osmodehydration
Authors:Deng, Yun; Zhang, Qinggang; Zhao, Yanyun
Author affiliation:Shanghai Jiaotong University, Shanghai 200240, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 89-93
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: The effects of pulsed vacuum and ultrasound on mass transfer kinetics and quality of apples (Fuji) were studied. Apple cylinders (15 mm height, 15 mm diameter) immersed in a 60% high fructose corn syrup solution were subjected to shaking, pulsed-vacuum, or ultrasound treatment for 3 h. Weibull model adequately described kinetics of water loss and sugar gain in the osmodehydration process of apples under all tested conditions (R2 greater than or equal 0.96, eRMSE [less-than or equal to] 0.018 and eMRPE [less-than or equal to] 6.37%). Pulsed vacuum and ultrasound enhanced the rates of water loss and sugar gain, and the greatest water loss occurred under ultrasonic treatment, while the largest amount of solute uptake was achieved under pulsed vacuum condition. Pulsed vacuum and ultrasound also had a greater effectiveness in depressing aw and titratable acidity, and in improving L value of the osmodehydrated apples.
Number of references:19
Ei main heading:Fruits
Ei controlled terms:Acoustic waves - Mass transfer - Sugar (sucrose) - Sugars - Ultrasonics - Water treatment
Uncontrolled terms:Apples - Osmosis - Pulsed vacuum -
Ultrasound - Weibull model
Ei classification codes:445.1 Water Treatment Techniques - 641.3 Mass Transfer - 751.1 Acoustic Waves - 753.1 Ultrasonic Waves - 804.1 Organic Compounds - 821.4 Agricultural Products - 822.3 Food Products
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
23. Accession number:083711541013
Title:Advances of respiration rate in modified atmosphere packaging for fruits and vegetables
Authors:Wang, Xiangyou; Li, Xia; Wang, Juan; Zhu, Jiying
Author affiliation:Shandong University of Technology, Zibo 255049, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 94-100 78
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: The shelf life of fresh fruits and vegetables can be extended by a low oxygen and high carbon dioxide environment where respiration and gas exchange are restricted by the package material so that a relatively favorable micro-atmosphere is maintained for a longer duration. Modeling respiration rate of fresh fruits and vegetables is crucial to the design of a successful modified atmosphere packaging (MAP) system. Advances on the studies of respiration rate in MAP of fruits and vegetables in the last decades were reviewed, which included the major methods for measuring respiration rate, factors affecting the respiration rate as well as respiration models of fruits and vegetables. Finally, further research and development trends of respiration rate of fresh fruits and vegetables were also discussed.
Number of references:41
Ei main heading:Fruits
Ei controlled terms:Agricultural products - Carbon dioxide -
Computer networks - Oxygen - Packaging
Uncontrolled terms:Fruits and vegetables - Model - Modified atmosphere packaging - Respiration rate - Storage
Ei classification codes:644.2 Refrigerants - 694.1 Packaging - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 821.4 Agricultural Products
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
24. Accession number:083711541014
Title:Design of variable rate fertilization controller based on CAN bus
Authors:Chen, Liping; Huang, Wenqian; Meng, Zhijun; Fu, Weiqiang; Zhao, Chunjiang
Author affiliation:National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 101-104 185
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: A variable rate fertilization controller based on CAN bus was presented. Firstly, variable rate fertilization control system and electro-hydraulic proportional valve-controlled motor rotation speed control system were introduced. Secondly, design of variable rate fertilization controller was described in detail including closed-loop PID control algorithm and communication protocol based on CAN bus. PID control parameters were determined through step response experiments and performance of closed-loop control system was analyzed. Variable rate fertilization control formula was deduced. Three kinds of fertilizers, urea ammonium phosphate and compound fertilizer, were used to test at different rotation speeds. Relationship equations between application rate of the three kinds of fertilizers and rotation speeds were calibrated. Finally, field experiments of fixed-rate and variable-rate fertilizations were conducted. Results show that the developed controller is suitable for variable rate application.
Number of references:6
Ei main heading:Urea fertilizers
Ei controlled terms:Ammonium compounds - Boolean functions - Buses - Chlorine compounds - Closed loop control systems - Communication - Computer networks - Control system analysis - Fertilizers - Parameter estimation - Phosphate fertilizers - Proportional control systems - Rotation - SCADA systems - Shafts (machine components) - Speed control - Speed - Three term control systems - Time varying control systems - Two term control systems - Urea
Uncontrolled terms:CAN bus - Electro-hydraulic proportional valve - PID control - Precision agriculture - Variable rate fertilization
Ei classification codes:601.1 Mechanical Devices - 601.2 Machine Components - 663.1 Heavy Duty Motor Vehicles - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 731.1 Control Systems - 731.3 Specific Variables Control - 804 Chemical Products Generally - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 815.1.1 Organic Polymers - 821.2 Agricultural Chemicals - 921.1 Algebra - 931.1 Mechanics - 961 Systems Science
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
25. Accession number:083711541015
Title:Safety design of pneumatic flexible joints for harvesting robot actuator
Authors:Liu, Xudong; Ma, Luzhong; Chen, Xiuxiang
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 105-108
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: According to the security problems of flexible pneumatic joints, such as gas leakage, pressure and other, the safety flexible joints driven by multi-gasbag were purposed, which can enhance the safety in actual use of flexible pneumatic joints. Subsequently, the static mathematical model of safety flexible joints was established. Finally, its corresponding control system was given and a single finger of the harvesting robot with two safety flexible joints was designed.
Number of references:5
Ei main heading:Robotics
Ei controlled terms:Computer networks - Fluid mechanics - Harvesting - Leakage (fluid) - Machine design - Mathematical models - Pneumatics
Uncontrolled terms:Actuator - Flexible joints - Harvesting robot - Safety design
Ei classification codes:452.1 Sewage - 452.3 Industrial Wastes - 483.1 Soils and Soil Mechanics - 601 Mechanical Design - 619.1 Pipe, Piping and Pipelines - 631.1 Fluid Flow, General - 632.3 Pneumatics - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 731.5 Robotics - 821.3 Agricultural Methods - 921 Mathematics - 931.1 Mechanics
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
26. Accession number:083711541016
Title:Experiment on microclimate in the greenhouses by fan and pad
Authors:Zhao, Yun; Shen, Jianying; Teitel, Meir
Author affiliation:Jiaxing University, Jiaxing 314001, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 109-113
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: For a comprehensive understanding of climate in a greenhouse with fan and pad system, an experiment measuring climate parameters was conducted on with two ventilation rates and with pad on and off. The transpiration rate of the plant inside greenhouse was supposed to be one of the most important factors on climate considerably influences latent heat exchange, and it was calculated and measured mainly in this work. The experimental data show that the transpiration rate has some correlation with ventilation and pad working condition. In the case of no pad working, the higher ventilation which promotes transpiration will induce a lower temperature inside greenhouse to outside and a lower leaf temperature than its ambient temperature. But with the pad working the leaf phenomena is just opposite. The vertical and horizontal distribution of temperature and specific humidity were also measured and analyzed.
Number of references:8
Ei main heading:Greenhouses
Ei controlled terms:Computer networks - Transpiration - Ventilation
Uncontrolled terms:Fan and pad system - Microclimate - Transpiration rates - Working conditions
Ei classification codes:402.1 Industrial and Agricultural Buildings - 461.9 Biology - 641.2 Heat Transfer - 643 Space Heating, Ventilation and Air Conditioning - 643.5 Ventilation - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 821.6 Farm Buildings and Other Structures
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
27. Accession number:083711541017
Title:CFD-based simulation of the temperature distribution in glass greenhouse with forced-air heater
Authors:Chen, Jiaoliao; Xu, Fang; Zhang, Libin; Sheng, Junqiang
Author affiliation:Zhejiang University of Technology, Hangzhou 310032, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 114-118
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: The modeling method of the temperature distribution in glass greenhouse with forced-air heater based on the CFD technique was proposed. The flow regime proved to be turbulent and it was modeled by using the standard k-ε turbulence model, and the non-gray DO model of radiation model was also applied. The numerical solution was made by applying a finite volume discretization code with the pressure implicit with splitting of operators (PISO) algorithm. The temperature data of the key position were collected in a three-span Venlo glasshouse. By using the root mean squares error (RMSE) algorithm, the error between simulated value in Fluent and measured value was simulated and analyzed. The results indicate that the CFD-based model can provide reliable estimation of the temperature distribution in the greenhouse during the forced-air heater working.
Number of references:10
Ei main heading:Turbulence models
Ei controlled terms:Air preheaters - Boolean functions - Glass - Greenhouses - Heat exchangers - Heating equipment - Numerical methods - Temperature distribution - Thermoanalysis - Thermostats - Turbulence
Uncontrolled terms:Forced-air heater - Greenhouse - Simulation - Air heaters
Ei classification codes:402.1 Industrial and Agricultural Buildings - 443.1 Atmospheric Properties - 616.1 Heat Exchange Equipment and Components - 631.1 Fluid Flow, General - 641.1 Thermodynamics - 642.2 Industrial Furnaces and Components - 643.2 Space Heating Equipment and Components - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 732.1 Control Equipment - 801 Chemistry - 812.3 Glass - 821.6 Farm Buildings and Other Structures - 921.1 Algebra - 921.6 Numerical Methods - 932.3 Plasma Physics
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
28. Accession number:083711541018
Title:Realization of communication in wireless monitoring system in greenhouse based on IEEE802.15.4
Authors:Zhang, Rongbiao; Gu, Guodong; Feng, Youbing; Lian, Chengfei
Author affiliation:Jiangsu University, Zhenjiang 212013, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 119-122 127
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: In order to overcome the disadvantages of the traditional wired monitoring system in greenhouse, such as high cost, difficult movement, and difficult installation and maintenance, a wireless monitoring system in greenhouse was designed based on IEEE802.15.4. The self-organized star network was built by sensor (control) nodes and mobile sink nodes through dynamically constructing short-distance network. This design reduced the sensor (control) nodes energy consumption and prolonged the longevity of sensor network. The communication between monitoring center and sink nodes was accomplished by multiple steps. Information could be transmitted in time, safely and smoothly, which were guaranteed by the logical and effective time slot arrangement. The system, which has MSP430 and CC2420 hard-core parts, could intelligently monitor parameters in greenhouse wirelessly, such as temperature, humidity, light-intensity and so on.
Number of references:7
Ei main heading:Wireless networks
Ei controlled terms:Computer networks - Energy policy - Greenhouses - Monitoring - Sensors - Sugar (sucrose) - Telephone systems
Uncontrolled terms:Greenhouse - Monitoring system - Wireless sensor networks - Wireless monitoring systems
Ei classification codes:402.1 Industrial and Agricultural Buildings - 525.6 Energy Policy - 716 Telecommunication; Radar, Radio and Television - 716.3 Radio Systems and Equipment - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 718.1 Telephone Systems and Equipment - 722 Computer Systems and Equipment - 722.3 Data Communication, Equipment and Techniques - 722.4 Digital Computers and Systems - 723 Computer Software, Data Handling and Applications - 732.2 Control Instrumentation - 801 Chemistry - 821.6 Farm Buildings and Other Structures - 822.3 Food Products - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
29. Accession number:083711541019
Title:Remote monitoring system of edible fungus industrial cultivation environment
Authors:Han, Qinghua; Li, Shujun; Zhang, Yunchuan; Mao, Zhihuai; Wu, Han; Bai, Liufang
Author affiliation:Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 123-127
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: The design scheme, hardware and software of remote monitoring system for edible fungus industrial cultivation environment were comprehensively analyzed. The remote monitoring system could real-time collect and monitor environment parameters such as temperature, humidity, illuminance and carbon dioxide concentration through the communication between personal computer and Ethernet data-collecting controller, and develop customized software based on configuration software (monitor and control generated system). The experimental results proved its advantages of steady performance, sample installation, and high monitoring precision, and its function of real-time data recording and displaying, dynamic and historical data curves, database query and report forms printout has been realized.
Number of references:8
Ei main heading:Remote control
Ei controlled terms:Carbon dioxide - Computer networks - Concentration (process) - Concurrency control - Humidity control - Monitoring - Personal computers
Uncontrolled terms:Configuration software MCGS - Edible fungus - Industrial cultivation - Remote monitoring - Remote monitoring systems
Ei classification codes:402 Buildings and Towers - 643.3 Air Conditioning - 644.2 Refrigerants - 716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 722.4 Digital Computers and Systems - 723 Computer Software, Data Handling and Applications - 723.3 Database Systems - 731.1 Control Systems - 731.3 Specific Variables Control - 802.3 Chemical Operations - 804.2 Inorganic Compounds - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
30. Accession number:083711541020
Title:Global optimization design of flexible manipulator structure and adaptive control
Authors:Tu, Li; Zhou, Pixuan; Zhang, Shuyou
Author affiliation:Zhejiang University, Hangzhou 310027, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 128-134
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: Under the integration optimization object, the beam shape and controller parameters were obtained by using an adaptive iterative algorithm with the accommodation of various geometrical constraints to consider the coupling between the controller and the mechanical structure of a flexible manipulator concurrently. The global optimization method was designed to combine the physical construction design with control algorithm by using the structure optimization as the outer-loop and the linear quadratic regulator (LQR) control as inner-loop. The simulation work of a single link flexible beam was done. The simulation results showed that the integration method to consider the control law and the structure optimization synthetically is effective and feasible.
Number of references:13
Ei main heading:Global optimization
Ei controlled terms:Adaptive algorithms - Boolean functions - Flexible manipulators - Flexible structures - Iterative methods - Manipulators - Mathematical programming - Optimization - Structural optimization
Uncontrolled terms:Adaptive control - Flexible manipulator - LQR - Structural design - Structure optimization
Ei classification codes:408.2 Structural Members and Shapes - 441.1 Dams - 655.1 Spacecraft, General - 691.1 Materials Handling Equipment - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 723 Computer Software, Data Handling and Applications - 723.1 Computer Programming - 731.5 Robotics - 921 Mathematics - 921.1 Algebra - 921.5 Optimization Techniques - 921.6 Numerical Methods - 922 Statistical Methods
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
31. Accession number:083711541021
Title:Modified differential evolution for constrained optimization and its application
Authors:Wen, Shuhua; Zhang, Xueliang; Lu, Qingbo; Wu, Meixian; Wang, Xiaoli
Author affiliation:Taiyuan University of Science and Technology, Taiyuan 030024, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 135-139
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: A center differential evolution algorithm with adaptive crossover factor for constrained optimization modified differential evolution algorithm (ACFCDE) was proposed to solve constraint optimization problems. The algorithm used three simple selection criteria based on feasibility to guide the search in the feasible region. The proposed algorithm did not adopt the penalty function method, in contrast to the penalty function method, the constraint-handing technique of this algorithm was very simple, it did not require additional parameters. In addition, the center point of the population was incorporated into the DE algorithm, which only participated in the competition of the best point with the other individuals of the population, did not in any differential evolutions. And the crossover factor of DE algorithm dynamically and linearly was modified. As these measures were adopted, the stability, robustness and global searching performance of DE algorithm have been improved greatly. Results of simulations and comparisons with the other algorithms based on four testing functions demonstrated the effectiveness, efficiency and robustness of the proposed ACFCDE.
Number of references:14
Ei main heading:Evolutionary algorithms
Ei controlled terms:Adaptive algorithms - Algorithms - Boolean functions - Constrained optimization - Constraint theory - Damping - Digital arithmetic - Optimization
Uncontrolled terms:Center point of population - Crossover factor - Differential evolution - Dynamic adapting - Machine design
Ei classification codes:721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 723 Computer Software, Data Handling and Applications - 731.1 Control Systems - 921 Mathematics - 921.1 Algebra - 921.5 Optimization Techniques - 921.6 Numerical Methods - 931.1 Mechanics - 961 Systems Science
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
32. Accession number:083711541022
Title:Artificial fish swarm algorithm based on neighborhood orthogonal crossover operator
Authors:Wang, Lianguo; Hong, Yi; Zhao, Fuqing; Yu, Dongmei
Author affiliation:Lanzhou University of Technology, Lanzhou 730030, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 140-144
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: An artificial fish swarm algorithm was proposed based on neighborhood orthogonal crossover operator by introducing neighborhood orthogonal crossover operator into the basic artificial fish swarm algorithm. The method of dynamic adjustment of the vision and step of artificial fish to improve the abilities of searching the global and local extremum has been adopted by the algorithm. It made orthogonal crossover operation between the local extremum of artificial fish swarm and the artificial fish swarm itself to produce a few representative optimal individuals which utilized not only its own useful information but also the optimal information of local extremum to improve the fast convergence and the abilities of searching the global extremum. The test of benchmark functions showed that the algorithm improved the performance effectively.
Number of references:19
Ei main heading:Meats
Ei controlled terms:Algorithms - Boolean functions
Uncontrolled terms:Artificial fish swarm algorithm - Artificial Intelligence - Orthogonal crossover operator - Swarm intelligence - Artificial fish
Ei classification codes:721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 723 Computer Software, Data Handling and Applications - 822.3 Food Products - 921 Mathematics - 921.1 Algebra
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
33. Accession number:083711541023
Title:Design method of torque converter blade based on quadratic function distribution
Authors:Liu, Weihui; Liu, Chunbao; Wang, Qingbo; Ma, Wenxing; Chu, Yaxu
Author affiliation:Hangzhou Advance Gearbox Group Co. Ltd., Hangzhou 311203, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 145-148
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: The design method of torque converter blade based on quadratic function distribution of momentum was put forward. The torque converters have been designed by using both new and traditional methods. The 3D model of torque converter was established and the flow section area was calculated. Compared with the traditional method, not only the blade profile of new method was more reasonable under equal blade thickening, but also the change of flow section area was more gently. The flow field of torque converters has been numerical simulated by CFD software. Based on the flow numerical solution, the performances of torque converters designed by new and traditional methods have been predicted. The comparison and analysis of the results have been carried out.
Number of references:5
Ei main heading:Torque converters
Ei controlled terms:Hydraulic torque converters - Quadratic programming - Three dimensional
Uncontrolled terms:Blade design - Distribution of momentum - Quadratic function - Torque converter - Quadratic functions
Ei classification codes:602 Mechanical Drives and Transmissions - 602.1 Mechanical Drives - 632.2 Hydraulic Equipment and Machinery - 662.4 Automobile and Smaller Vehicle Components - 723.1 Computer Programming - 723.5 Computer Applications - 902.1 Engineering Graphics - 921.5 Optimization Techniques - 922 Statistical Methods
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
34. Accession number:083711541026
Title:Grey robust optimization design of high dimension multi-objective and its achieving with matlab
Authors:Luo, Youxin; Che, Xiaoyi; Yang, Jirong; Liu, Qiyuan; Wang, Chao
Author affiliation:Hu'nan University of Arts and Science, Changde 415000, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 157-160
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: A general method for robust design was presented based on sensitivity, and two models were established for robust optimization design of mechanical parts based on adjunctive function of sensibility of the high dimension multi-objective or the high dimension multi-objective. Constraint functions of the design parameters and the solutions were founded with absolute degree of grey incidence. Then the robust optimization design was realized with the software of optimization toolbox and symbolic toolbox of Matlab7.4. The design example showed that the model is practical and effective.
Number of references:14
Ei main heading:Design
Ei controlled terms:MATLAB - Multiobjective optimization - Time varying systems
Uncontrolled terms:Absolute degree of grey incidences - Optimization - Robust design - Sensitivity analysis - Robust optimization
Ei classification codes:408 Structural Design - 723.1.1 Computer Programming Languages - 723.5 Computer Applications - 731.1 Control Systems - 902.1 Engineering Graphics - 921 Mathematics - 921.5 Optimization Techniques - 961 Systems Science
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
35. Accession number:083711541027
Title:Detecting trajectory of planar controllable linkage mechanism based on computer vision
Authors:Li, Renjun; Liu, Hongzhao; Li, Pengfei
Author affiliation:Xi'an University of Technology, Xi'an 710048, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 161-163 168
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: The study on detecting the trajectory of planar controllable linkage mechanism based on computer vision was presented. Firstly, a visual detection system with camera as the basic part was formed, and the problem of data lost in the process of image acquiring has been solved. The sequence image of object was acquired by the calibrated camera system, and the trajectory of object was gained by the algorithms of image processing, object detection and location. The visual detection method for planar controllable mechanism has been realized, and the result is satisfactory.
Number of references:8
Ei main heading:Object recognition
Ei controlled terms:Artificial intelligence - Cameras - Computer networks - Computer vision - Image processing - Signal detection - Trajectories
Uncontrolled terms:Controllable linkage mechanism - Trajectory detection - Visual detection
Ei classification codes:404.1 Military Engineering - 654.1 Rockets and Missiles - 655.2 Satellites - 716 Telecommunication; Radar, Radio and Television - 716.1 Information Theory and Signal Processing - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 723.2 Data Processing and Image Processing - 723.4 Artificial Intelligence - 723.5 Computer Applications - 731.6 Robot Applications - 741 Light, Optics and Optical Devices - 741.1 Light/Optics - 741.2 Vision - 742.2 Photographic Equipment - 751.1 Acoustic Waves
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
36. Accession number:083711541028
Title:Quality prediction in small-batch production based on dynamic exponential smoothing model
Authors:Wu, Dehui
Author affiliation:Jiujiang University, Jiujiang 332006, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 164-168
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: After analyzing the deficiency of traditional exponential smoothing prediction model, a novel prediction model with the concepts of dynamic smoothing parameter and initial value was proposed and applied to prediction compensation-control in small-batch production. In the presented model, with an optimal algorithm based on steepest-descent, the dynamic smoothing parameter and initial value were adjusted with new sample of the time-series automatically. Moreover, the presented model was used as the key technology of quality predicting in machining plungers of oil pump mouth, the practical results showed that compared with auto-regressive (AR), gray and traditional exponential smoothing model, the presented one is higher in precision and better in adaptation.
Number of references:10
Ei main heading:Parameter estimation
Ei controlled terms:Computer networks - Mathematical models - Optimal control systems
Uncontrolled terms:Dynamic exponential smoothing model - Machining error - Prediction - Quality control - Small-batch production
Ei classification codes:716 Telecommunication; Radar, Radio and Television - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 731.1 Control Systems - 921 Mathematics - 921.5 Optimization Techniques
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
37. Accession number:083711541029
Title:Straightening stroke algorithm of shaft with single-edged crack based on J-integral moving theory
Authors:Zhai, Hua
Author affiliation:Hefei University of Technology, Hefei 230009, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 169-172
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: The J-integral moving theory with multiple loading and shaft straightening stroke increasing algorithm with single-edged crack were presented according to the elastic-plastic fracture mechanic theory and experiments analysis. During multi-step straightening, with the assumption of independent multiple loading, J-integral including two items of Je and Jp, and the crack blunting would promote the JIC increasing, the J-integral could be considered to move up slowly. Based on this view, the multi-step straightening stroke algorithm was built up to the shaft with single-edged crack. The straightening experiment resulted to the shaft with 3 mm depth single-edged crack could prove the JIC moving phenomenon, and after 4 steps straightening to the experimented shaft, the initial 0.13 mm bend value could be decreased to 0.01 mm, while crack mouth opening displacement could be limited to 0.008 mm.
Number of references:11
Ei main heading:Shaft displacement
Ei controlled terms:ABS resins - Boolean functions - Fracture mechanics - Speed
Uncontrolled terms:Algorithm - Crack - Shafts - Straightening - J integrals
Ei classification codes:421 Strength of Building Materials; Mechanical Properties - 602.1 Mechanical Drives - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 815.1.1 Organic Polymers - 921.1 Algebra - 931.1 Mechanics
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
38. Accession number:083711541030
Title:Wear detection on cutting tools based on wavelet neuralnetwork
Authors:Huang, Hua; Li, Aiping
Author affiliation:Tongji University, Shanghai 200092, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 173-177
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: Wavelet neural network (WNN) is used widely in tool wear detection, but the curse of dimensionality and shortage in the responding speed and learning ability is brought about by the traditional models. An improved WNN algorithm which combined with modified particle swarm optimization (PSO) was presented to overcome the problems. Based on the cutting power signal, the method has been used to estimate the tool wear. The Daubechies-wavelet was used to decompose the signals into approximation and details. The energy and square-error of the signals in the detail levels was utilized as characters which indicated tool wear, the characters were input to the trained WNN to estimate the tool wear. Compared with BP neural network, conventional WNN and genetic algorithm-based WNN, a simpler structure and faster converge WNN was obtained by the new algorithm, and the accuracy for estimate tool wear has been tested by simulation and experiments.
Number of references:8
Ei main heading:Neural networks
Ei controlled terms:Backpropagation algorithms - Boolean functions - Computer networks - Cutting tools - Error analysis - Genetic algorithms - Image classification - Signal processin Uncontrolled terms:Cutting tool - Particle swarm optimization - Wavelet neural network - Wear - Tool wear Ei classification codes:461.1 Biomedical Engineering - 603.2 Machine Tool Accessories - 604.1 Metal Cutting - 605 Small Tools and Hardware - 716 Telecommunication; Radar, Radio and Television - 716.1 Information Theory and Signal Processing - 717 Optical Communication - 718 Telephone Systems and Related Technologies; Line Communications - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 722 Computer Systems and Equipment - 723 Computer Software, Data Handling and Applications - 723.4 Artificial Intelligence - 723.5 Computer Applications - 921 Mathematics - 921.1 Algebra - 921.6 Numerical Methods
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
39. Accession number:083711541031
Title:Research and realize a curve generation method based on tool-driven
Authors:Gao, Qingfeng; Cheng, Guoquan; Weng, Haishan
Author affiliation:Tsinghua University, Beijing 100084, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 178-181
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract: From the manufacturing point of view, a generate part surface method was brought out based on these theoretical precision key points which calculated with the cutting conditions of tool shape, cutting direction, work piece shape and etc. at every processing instant. This "tool-driven" approach avoided complex surface measurement aberration, and make it possible to get geometric information of big scale objects and work piece surface modeling of each instantaneous machining process.
Number of references:7
Ei main heading:Cutting
Ei controlled terms:Chlorine compounds
Uncontrolled terms:Computer aided manufacturing - Point-cloud generation - Surface modeling - Tool-driven - Part surface
Ei classification codes:604.1 Metal Cutting - 606.2 Abrasive Devices and Processes - 804.1 Organic Compounds - 804.2 Inorganic Compounds
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
40.Accession number:083711541024
Title:Study on double-crank reducer with external gear board
Authors:Zhu, Caichao; Li, Lihua; Zhang, Lei; Yang, Bin
Author affiliation:Chongqing University, Chongqing 400044, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 149-152 207
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:In view of vibration and loud noise that existed in the course of applying the current ring-reducer, a new type ring-reducer was firstly proposed, which consisted of two-stage transmission, one involute transmission and a planetary transmission of N-type with small tooth number difference. The new type reducer did not only reserve the advantages of the current ring-reducer, but also had the characteristics of smaller volume, bigger transmission ratio and higher stiffness. The principle and structural style of the new reducer have been analyzed, and the power flow has been studied. The relation of angular velocity and the balance equation of torque was deduced, and the transmission efficiency of the new reducer was calculated.
Number of references:6
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
41.Accession number:083711541025
Title:Rotating machinery faults making using time-frequency cross-terms
Authors:Yang, Longxing; Wang, Qiangfeng; Jia, Minping
Author affiliation:Jiangsu Teacher's University of Technology, Changzhou 213001, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 153-156
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:Based of WignerVille cross-terms distribution properties of amplitude modulation signals, an approach of cross-terms false spectral energy to diagnose machinery faults was presented firstly, and then the transmission band core function was designed to extract the cross-terms false spectral energy of amplitude modulation signals. Finally, the real life gear data was provided in order to show the availability of the approach.
Number of references:5
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
42.Accession number:083711541032
Title:Evaluation method of chain wear-resistant reliability
Authors:Xu, Shuxin; Zhou, Xiaoqin; Li, Jingqiu
Author affiliation:Jilin University, Changchun 130025, China
Serial title:Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
Abbreviated serial title:Nongye Jixie Xuebao
Volume:v 39
Issue:n 8
Issue date:August 2008
Publication year:2008
Pages:p 182-185
Language:Chinese
ISSN:1000-1298
CODEN:NUYCA3
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Machinery, Beijing, 100083, China
Abstract:The limiting wear tensibility rate greatly influences the operational performance of chains. It is an important measure to establish the assessment criterion to ensure the reliable operation of mechanical products. Based on the theories of statistics, an assessment method of chain wear-resistant reliability was proposed, which could easily adjust the sampling scheme according to the types of chain transmission, so as to satisfy the needs of assessing the reliability of different mechanical products. The research shows that by using the reliability based on operational life or limiting wear tensibility rate as assessment index, assessing cost is not changed, and more information on reliability is obtained.
Number of references:7
Database:Compendex
Compilation and indexing terms, © 2008 Elsevier Inc.
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