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11th IEEE International Conference on Mechatronics and Automation, IEEE ICMA 2014

作者： Yu-Wei, Yang Bin, Li Jin-You, Xu Xin-Hua, Zhao Xuan, Wei Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems Tianjin 300384 China School of Mechanical Eng. Tianjin University of Technology Tianjin 300384 China

ISBN: (纸本)9781479939787

Since mobile flexible serial manipulators lack the incapability of precise positioning under the cases of high speed and heavy payload, the new configuration of a wheeled suspension flexible mobile parallel manipulator is presented. Based on multi-flexible-body dynamics, its dynamic model is formulated in Cartesian coordinate system with considering generality and integration of the modelling method. At last, in order to verify the effectiveness of the presented modeling method and the dynamic characteristics of the novel mobile manipulator, a comparative assessment of the dynamic models is validated through numeric simulations. © 2014 IEEE.

关键词： Dynamic models

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Configuration optimization of a wheeled suspension mobile parallel manipulator based on multi-body dynamics

Configuration optimization of a wheeled suspension mobile pa...

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11th IEEE International Conference on Mechatronics and Automation, IEEE ICMA 2014

作者： Yu-Wei, Yang Shou-Jun, Wang Ning, Xie Wei-Min, Ge Bin, Li Tianjin Key Laboratory for Control Theory Applications in Complicated Systems Tianjin 300384 China School of Mechanical Eng. Tianjin University of Technology Tianjin 300384 China

ISBN: (纸本)9781479939787

It is since the shortcomings of a mobile manipulator in fields of height speed, large loading and precise tracking operation that a novel configuration manipulator of a wheeled suspension mobile parallel manipulator is presented. Based on multi-body dynamics, its inverse dynamic model is modeled in Cartesian Coordinate system under considering generality and integration of modeling approachs. Based on the inverse dynamic model, the energy comsumption of driving motors is treated as an optimization goal to optimize some configuration parameters of the parallel manipulator. At last, the optimization algrithm is presented and verifed by numeric simulations. © 2014 IEEE.

关键词： Manipulators

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The simulation research of SVG control algorithm based on unbalanced power system

The simulation research of SVG control algorithm based on un...

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2014 International Conference on Energy Research and Power Engineering, ERPE 2014

作者： Huang, Sun Wei Shi, Jin Tianjin Key Laboratory for Cofntrol Theory and Applications in Complicated System Tianjin University of Technology Tianjin 300384 China Architectural Design and Research Institute of Tianjin University Tianjin 300073 China

ISBN: (纸本)9783038351603

For three-wire three-phase system load imbalance in the system when the current imbalance of power grid, The SVG control strategy which was applied in the unbalanced system was proposed by the paper, and carried on the research and analysis by MATLAB simulation function. The simulation results proved that the control strategy could achieve compensation control requirements, at the same time can effectively restrain the negative sequence current. © (2014) Trans Tech Publications, Switzerland.

关键词： MATLAB

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Multi-point-to-point Image Transmission system Based on TCP/IP Protocol

Multi-point-to-point Image Transmission System Based on TCP/...

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2015 Fifth International Conference on Instrumentation and Measurement,Computer,Communication and control (IMCCC2015)(第五届仪器测量、计算机通信与控制国际会议)

作者： Baofeng Zhang Qing Xia Fangfang Han Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems Tianjin University of Technology 391Binshui Xi RoadXiqing DistrictTianjin300384China

ISBN: (纸本)9781467377249

In order to solve the problem of multiple subsystems sends images to the server and the server receives and real-time display the image on the screen and store image data in the distributed vision inspection system, this article designed a image transmission system which can realize the multi-point-topoint image transmission. The image transmission system based on TCP / IP protocol, using a typical client / server mode, windows sockets application programming technology to realize the function of the server computer receive , display and storage the picture file come from the multiple clients .

关键词： TCP/IP protocol Windows Sockets Programming Client/server model Picture Transfer Multi-point-to-point

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Research on the three-level inverter midpoint potential algorithm based on the charge balance theory

Research on the three-level inverter midpoint potential algo...

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2014 International Conference on Energy Research and Power Engineering, ERPE 2014

作者： Huang, Sun Wei Wang, Yue Yu Shi, Jin Tianjin University of Technology Tianjin 300384 China Tianjin Key Laboratory of Control Theory and Applications in Complicated Systems Tianjin 300384 China Architectural Design and Research Institute of Tianjin University Tianjin 300073 China

ISBN: (纸本)9783038351603

In order to achieve high voltage, high-power,two-level inverter need to switch in series which results switch static, dynamic-pressure problems. Three-level inverter solve this problem for its circuit, but this circuit has the midpoint potential imbalances of the DC side, we propose to charge balance theory based on the three-level inverter midpoint potential algorithm to solve the problem, build simulation model to validate the algorithm on the midpoint potential in MATLAB. © (2014) Trans Tech Publications, Switzerland.

关键词： MATLAB

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Identification of fish species based on image processing and statistical analysis research

Identification of fish species based on image processing and...

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IEEE International Conference on Mechatronics and Automation

作者： Lian Li Jinqi Hong Tianjin Key Laboratory for Control Theory & Applications in Complicated System Tianjin University of Technology Tianjin China

For more fish varieties, to the subsequent processing and marketing, which is necessary to classify the types of fish. This study is based on image processing technology to classify the types of fish, four fish to make use of the existing image acquisition device for collecting samples, through the MATLAB software for image preprocessing, such as fish gray, binarization, image enhancement, contour extraction to extract the 11 feature parameters of four fish species, such as using the principal component analysis (PCA) to 11 characteristic parameters for dimension reduction, this study took four principal component. Then use SPSS software to establish fisher and mahalanobis distance model, the combination of four principal component reuse component to build a model to classify the four different kinds of fish. Through SPSS software simulation and identification results show that the average recognition rate of 96.67%, which can be well applied to the fish species identification technology.

关键词： Marine animals Feature extraction Image color analysis Principal component analysis Object recognition Software

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The study of calibration and epipolar rectification for spherical stereo vision system

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Diangong Jishu Xuebao/Transactions of China Electrotechnical Society 2015年 30卷 19-25页

作者： Long, Bangqiang Lu, Chunfang Feng, Weijia State Key Laboratory of Precision Measuring Technology and Instruments Tianjin University Tianjin300072 China Tianjin Polytechnic University Tianjin300387 China Tianjin Key Laboratory for Control Theory and Applications in Complicated Industry Systems Tianjin University of Technology Tianjin300384 China College of Computer and Information Engineering Tianjin Normal University Tianjin300387 China

A parameter calibration and epipolar rectification method for Spherical Stereo Vision system (SSVS) built by double fish-eye lenses is investigated in this paper. The geometric system model is established, which indicated the interior and exterior parameters. After that, the calibration method is researched for the general mathematical model. The principle of epipolar geometry for Spherical Stereo Vision system is discussed in detail. The calibration results of interior and exterior parameters are used for utilizing the epipolar rectification. The experiments prove that the calibration results are accurate and the effects of epipolar rectification are satisfied. The SSVS built by double fisheye lenses can get larger stereo field than traditional stereo vision system which based on a pair of perspective projection images. ©, 2015, The editorial office of Transaction of China Electrotechnical Society. All right reserved.

关键词： Calibration

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Characteristic analysis on land for an amphibious spherical robot

Characteristic analysis on land for an amphibious spherical ...

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IEEE International Conference on Mechatronics and Automation

作者： Fu Wan Shuxiang Guo Xu Ma Yuehui Ji Yunliang Wang Tianjin Key Laboratory for Control Theory & Applications in Complicated System and Biomedical Robot Laboratory Tianjin University of Technology Tianjin China

ISBN: (纸本)9781479939800

In recent years, all kinds of underwater robot have been developed owing to having been widely used in narrow pipelines, underwater detection or complicated underwater spaces full with reefs. An amphibious spherical robot is presented in the paper. The paper has focused on characteristic analysis on land for an amphibious spherical robot. An amphibious spherical robot includes a circular acrylic plate, a sealed hemispheroid and four drive units. Each of them consists of a water-jet propeller and two servo motors. The rotation angle of the servo motor can be changed by adjusting the duty ratio of the motor. A variety of sports gait can be achieved by adjusting the robot's leg movement sequence. Meanwhile, crawling gait and trotting gait experiments have been carried out for evaluating the performance of the amphibious spherical robot on tile floor and brick floor. From the experiment results, the robot has a higher walking speed on tile floor. Besides, the speed of walking robot will increase with the increase of frequency. When the frequency is lower than 2HZ, the maximum speed of robot can reach 6.67cm/s. Experiments proved that it is feasible to study performance evaluation for robot. The study of gait analysis is the research foundation for amphibious spherical robot.

关键词： Legged locomotion Robot sensing systems Floors Servomotors Propellers Pulse width modulation

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Research on the Design and Manufacture of Steam Cleaning Machine based on PLC

Research on the Design and Manufacture of Steam Cleaning Mac...

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2014 International Conference on Vehicle,Mechanical and Electrical Engineering(ICVMEE 2014)

作者： Demin Zhang Shibo Li School of Electrical Engineering Tianjin University of Technology Tianjin Key Laboratory for Control Theory & Applications in Complicated System

In this paper,the programmable logic controller(PLC) produced the steam cleaning machine controller based on PLC and foundation design,and steam cleaning device controlled the process of the *** programmable logic controller PLC programming and logic design,system realizes according to different artifact types,complete cleaning,blowing,drying the corresponding *** system after careful design,manufacturing and detailed inspection,and after the running test,the experimental results shows that:as long as the proper maintenance and proper use of equipment,the project can improve the efficiency to a great extent.

关键词： PLC steam cleaning machine automation equipment

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A study for micro cutting process of Guide abrasive wear based on ABAQUS

A study for micro cutting process of Guide abrasive wear bas...

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IEEE International Conference on Mechatronics and Automation

作者： Qingchun Zheng Rui Yang Yahui Hu Xiaoyu Yue Tianjin Key Laboratory for Control Theory & Applications in Complicated Systems Tianjin University of Technology Tianjin China

ISBN: (纸本)9781479939800

This paper mainly uses ABAQUS Explicit finite element analysis to establish a two-dimensional model about the micro cutting process of Guide abrasive wear. The Johnson-Cook constitutive model is used to simulate the stress changes in the process of guide wear. Simplify the particle as a circular, like a small tool to cut the surface of the guide rail. Treating the particle radius as the corner radius, we study the impact on the stress of the guide rail wear process in different cutting speed and radii. The simulation data is obtained by orthogonal cutting experiment and regression model is analyzed by MATLAB, the regression equation and the influence laws of various factors to the stress changes are acquired.

关键词： Rails Stress Abrasives Mathematical model Analytical models Finite element analysis

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