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2012 1st International Conference on Innovative engineering Systems, ICIES 2012

作者： Ibrahim, Khalil Ramadan, Ahmed Farmi, Mohamed Kobayashi, Yo Abo-Ismail, Ahmed Fujie, Masakatus G. Mechatronics and Robotics Engineering Egypt-Japan University of Science and Technology Alexandria Egypt Computers and Automatic Control Engineering Dep. Tanta University Tanta Egypt Mechanical Department Mansoura University Mansoura Egypt Faculty of Science and Engineering Waseda University Tokyo Japan

ISBN: (纸本)9781467344388

This paper deals with the design process and the dynamic control simulation of a new type of 4-DOFs parallel mechanism that can be used as an endoscopie surgical manipulator. The proposed mechanism, 2-PUU 2PUS, is designed based on the screw theory and the parallel virtual chain type synthesis method. Based on the structure analysis of the 4-DOF parallel mechanism, the inverse position equation is studied using the inverse analysis theory of kinematics. The design and the stress analysis of the mechanism are investigated using SolidWorks software. The virtual prototype of the parallel mechanism is constructed, and the dynamic simulation is performed using ADAMS™ software. The system model utilizing PID and PI controllers has been built using MATLAB software. A more realistic simulation in accordance with a given bending angle and point to point control is implemented by the use of both ADAMS/MATLAB software. The simulation results showed that this control method has solved the coordinate control for the 4-DOF parallel manipulator so that each output is feedback to the four driving rods. From the results, the tracking performance is achieved. Other control techniques, such as intelligent ones, are recommended to improve the tracking performance and reduce the numerical truncation error. © 2012 IEEE.

关键词： MATLAB

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A novel fuzzy PID excitation controller with PSS in power system

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Journal of Computational Information Systems 2012年第21期8卷 8735-8743页

作者： Gao, Hongliang Hu, Xiaoya Wang, Bingwen Qi, Huan Xiong, Wei Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China College of Mechatronics and Control Engineering Hubei Normal University Huangshi 435002 China

This study deals with the design of a novel fuzzy PID excitation controller with power system stabilizer (PSS) to enhance the electromagnetic stability and mechanical stability after startup or large sudden faults. The developed fuzzy proportionalCintegralCderivative (PID) controller (FPID) has a fuzzy logic unit (FLU), which accepts error in terminal voltage of the generator and change in error as its inputs and generates the desired Kp, Ki and Kd for the PID excitation controller. Based on the generic PSS and FPID, we design the FPID excitation controller with PSS (FPID-PSS). The performance of the proposed FPID-PSS is compared with PID controller and FPID controller. The simulation study is carried out on a single machine infinite bus (SMIB) power system. Simulation results show the effectiveness, rapidity and good performance of the proposed controller. © 2012 Binary Information Press.

关键词： Electric excitation

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Ant Colony Based Model Prediction of a Twin Rotor System

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Procedia engineering 2012年 41卷 1135-1144页

作者： S.F. Toha S. Julai M.O. Tokhi Department of Mechatronics Faculty of Engineering International Islamic University Malaysia Malaysia Department of Mechanical Faculty of Engineering University Malaya Malaysia Department of Automatic Control Systems and Engineering University of Sheffield UK

Interest in biologically-inspired optimization techniques has increased due to its accurate results, fast performance and ease of use. In this paper, an ant colony optimization (ACO) technique is deployed and used for modelling a twin rotor system. The system is perceived as a challenging engineering problem due to its strong cross coupling between horizontal and vertical axes and inaccessibility of some of its states and outputs for measurements. Accurate modelling of the system is thus required so as to achieve satisfactory control objectives. It is demonstrated that ACO can be effectively used for modelling the system with highly accurate results. The accuracy of the modelling results is demonstrated through validation tests including training and test validation and correlation tests.

关键词： Ant colony optimisation Parametric modelling Twin rotor system Auto Regressive model

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The design of damping linear optimal excitation controller for power systems

International Journal of Digital Content Technology and its ...

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International Journal of Digital Content Technology and its Applications 2012年第17期6卷 67-75页

作者： Gao, Hongliang Wang, Bingwen Qi, Huan Hu, Xiaoya Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan Hubei 430074 China College of Mechatronics and Control Engineering Hubei Normal University Huangshi Hubei 435002 China

This article presents a novel damping linear optimal excitation controller (DLOEC) to enhance the stability of power systems. As the inconvenience of the selection of Q matrix for traditional linear optimal excitation controller (LOEC), DLOEC is designed based on the invariance of undamped mechanical oscillation frequency, which can offer the given damping coefficient for the system, so the dynamic performance of the system can be greatly improved. The performance of the proposed DLOEC is compared with conventional power system stabilizer (PSS). The simulation study is carried out on a single machine infinite bus (SMIB) power system. Simulation results show the effectiveness, rapidity and good performance of the proposed controller.

关键词： Damping

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Research on network performance of wireless sensor networks with adaptive sleeping MAC protocol based on different kinds of topology structure

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Information Technology Journal 2012年第8期11卷 1040-1047页

作者： Gao, Hongliang Wang, Bingwen Hu, Xiaoya Xiong, Wei Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan Hubei 430074 China College of Mechatronics and Control Engineering Hubei Normal University Huangshi Hubei 435002 China

Network performance is a hot issue in wireless sensor networks. How should the nodes be distributed to achieve good network performance? Many researchers have devised novel energy-efficient solutions to some of the conventional wireless networking problems, such as medium access control, routing, self-organization, bandwidth allocation and so on. In this study, some main performance indexes of wireless sensor networks are studied from a topology viewpoint. We study how to distribute sensor nodes and how many sensor nodes should be used in order to obtain a good network performance. Furthermore we adopt adaptive sleeping Medium Access control (MAC) protocol SMAC for better energy efficiency. In this study, we build a general simulation platform using NS2 and design three typical topology structures innovatively and then research the network performance of wireless sensor networks in the three kinds of typical topology structure based on the platform. Simulation results verify the rules we have obtained in this study. © 2012 Asian Network for Scientific Information.

关键词： Network performance

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Analysis and Simulation of Laser Polarization Characteristics on Metal Surface in Short-Range Detection

Analysis and Simulation of Laser Polarization Characteristic...

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2012 Conference on Modelling, Identification and control (MIC2012)

作者： Yu-ying Yang Zhan-zhong Cui Shuang-cheng Wei State Key Lab of Mechatronics Engineering and Control Beijing Institute of Technology Department of Arms Engineering Academy of Armored Force Engineering

ISBN: (纸本)9781627483766

In view of using only the intensity information of retroreflection wave and poor capacity of anti-interference in laser short-range detection,this paper analyzes the polarization characteristics of laser beam on the metal surface and establishes reflection model of polarized laser.A target detection method based on polarization characteristics of reflection laser is putted forward and the simulation of polarization characteristics on the surface of several typical metal targets is implemented at last.

关键词： Short-range Detection Polarization Characteristics Stokes Parameters Metal Target

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Chaos control and Modified Projective Synchronization of Chaotic Dissipative Gyroscope Systems

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Journal of Energy and Power engineering 2012年第1期6卷 90-100页

作者： Faezeh Farivar Mahdi Aliyari Shoorehdeli Mohammad Teshnehlabs Mohammad Ali Nekoui Department of Mechatronics Engineering Science and Research Branch Islamic Azad University Tehran Iran Department of Mechatronics Engineering Faculty of Electrical Engineering K. N. Toosi University of Technology Tehran 1ran Department of Control Engineering Faculty of Electrical Engineering K. N. Toosi University of Technology Tehran Iran

This paper proposes the chaos control and the modified projective synchronization methods for chaotic dissipative gyroscope systems. Because of the nonlinear terms of the gyroscope system, the system exhibits chaotic motions. Occasionally, the extreme sensitivity to initial states in a system operating in chaotic mode can be very destructive to the system because of unpredictable behavior. In order to improve the performance of a dynamic system or avoid the chaotic phenomena, it is necessary to control a chaotic system with a periodic motion beneficial for working with a particular condition. As chaotic signals are usually broadband and noise like, synchronized chaotic systems can be used as cipher generators for secure communication. This paper presents chaos synchronization of two identical chaotic motions of symmetric gyroscopes. Using the variable structure control technique, control laws are established which guarantees the chaos control and the modified projective synchronization. By Lyapunov stability theory, control lows are proposed to ensure the stability of the controlled and synchronized system. Numerical simulations are presented to verify the proposed control and the synchronization approach. This paper demonstrates that synchronization and anti-synchronization can coexist in dissipative gyroscope systems via variable structure control.

关键词： Dissipative gyroscope chaos control modified projective synchronization variable structure control.

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The application of adaptive hybrid filters in infrared image denoising

The application of adaptive hybrid filters in infrared image...

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2012 International Symposium on Photonics and Optoelectronics, SOPO 2012

作者： Qiao, Liyong Xu, Lixin Gao, Min Zhang, Jing Yang, Yuying National Key Laboratory of Mechatronics Engineering and Control Beijing Institute of Technology Beijing China Missile Engineering Department Ordnance Engineering College Shijiazhuang China HeBei TaiHang Machinery Industries Co. Ltd. China North Industries Group Corporation Shijiazhuang China Academy of Armored Force Engineering Beijing China

ISBN: (纸本)9781457709111

Considering the characteristics of infrared images contaminated by Gaussian noise, impulse noise and other mixed noises, an adaptive hybrid filtering algorithm based on infrared image's local statistical property is presented in this paper. It can automatically detect noises, determine the output based on threshhold value, select the size of filtering window, and judge the image edge on the basis of Laplacian Operator. The experiment results indicate that the presented algorithm has removed the infrared tank image's mixed noises effectively, preserved the image details and edge features very well, and provided an effective way for infrared image denoising. © 2012 IEEE.

关键词： Impulse noise

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Analysis and Simulation of Laser Polarization Characteristics on Metal Surface in Short-Range Detection

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AASRI Procedia 2012年 3卷 328-334页

作者： Yu-ying Yang Zhan-zhong Cui Shuang-cheng Wei State Key Lab of Mechatronics Engineering and Control Beijing Institute of Technology Beijing 100081 PR China Department of Arms Engineering Academy of Armored Force Engineering Beijing 100072 PR China

In view of using only the intensity information of retroreflection wave and poor capacity of anti-interference in laser short-range detection, this paper analyzes the polarization characteristics of laser beam on the metal surface and establishes reflection model of polarized laser. A target detection method based on polarization characteristics of reflection laser is putted forward and the simulation of polarization characteristics on the surface of several typical metal targets is implemented at last.

关键词： Short-range Detection Polarization Characteristics Stokes Parameters Metal Target

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Cascade controller Including Backstepping for Hydraulic-Mechanical Systems

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IFAC Proceedings Volumes 2012年第8期45卷 310-315页

作者： Martin Choux Geir Hovland Mogens Blanke Mechatronics Group Department of Engineering University of Agder N-4892 Grimstad Norway Automation and Control Group Department of Electrical Engineering Technical University of Denmark DK-2800 Kgs. Lyngby Denmark

Development of a cascade controller structure including adaptive backstepping for a nonlinear hydraulic-mechanical system is considered in this paper where a dynamic friction (LuGre) model is included to obtain the necessary accuracy. The paper compares the performance of two variants of an adaptive backstepping tracking controller with earlier results. The new control architecture is analysed and enhanced tracking performance is demonstrated when including the extended friction model. The complexity of the backstepping procedure is significantly reduced due to the cascade structure. Hence, the proposed control structure is better suited to real-time implementation.

关键词： Hydraulic actuator Lyapunov methods Adaptive control

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