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Research on rough set theory and applications in China

Lecture Notes in Computer Science

作者： Wang, Guoyin Zhang, Qinghua Huang, Houkuan Ye, Dongyi Hu, Qinghua Hu, Xuegang Shi, Zhongzhi Li, Yongli Shang, Lin An, Liping Sai, Ying Chen, Shanben Liang, Jiye Qin, Keyun Zeng, Huanglin Xie, Keming Miao, Duoqian Min, Fan Wu, Zhaocong Wu, Weizhi Dai, Jianhua Institute of Computer Science and Technology Chongqing University of Posts and Telecommunications Chongqing 400065 China School of Information Science and Technology Southwest Jiaotong University Chengdu 610031 China School of Computer and Information Technology Beijing Jiaotong University Beijing 100044 China College of Math. and Computer Fuzhou University Fuzhou 350002 China Harbin Institute of Technology PO Box 458 Harbin 150006 China School of Computer and Information Hefei University of Technology Hefei 230009 China Institute of Computing Technology Chinese Academy of Sciences Beijing 100080 China Lanzhou University No.222 Tianshui South Rd. Lanzhou 730000 China State Key Laboratory for Novel Software Technology Nanjing University Nanjing 210093 China Management Science and Engineering Department Business School Nankai University Tianjin 300071 China Shandong University of Finance No.40 Shun-geng Road Jinan 250014 China Welding Engineering Institute Shanghai Jiaotong University Shanghai 200030 China School of Computer and Information Technology Shanxi University Taiyuan 030006 China Intelligent Control Development Center Southwest Jiaotong University Chengdu 610031 China Artificial Intelligence of Key Laboratory Sichuan University of Science and Engineering Zigong 643000 China Department of Automation College of Information Engineering Taiyuan University of Technology Taiyuan 030024 China 4800 CaoAn Highway Shanghai 201804 China School of Computer Science and Technology University of Electronic Science and Technology of China Chengdu 610054 China School of Remote Sensing Information Engineering Wuhan University Wuhan 430079 China Institute for Information and System Sciences Faculty of Science Xi'an Jiaotong University Xi'an 710049 China Information College Zhejiang Ocean University Zhejiang 316004 China Institute of Artificial Intelligence Zhejiang University Hangzhou 310027 China

ISBN: (纸本)3540850635

This article gives a capsule view of research on rough set theory and applications ongoing at universities and laboratories in China. Included in this capsule view of rough set research is a brief description of the following things: Chinese research groups on rough set with their URLs for web pages, names of principal researchers (supervisors), numbers of graduate students, and topics being investigated. Statistical summaries showing the growth in the research on rough set theory and application in China are included. In addition, an introduction summarizing the research interests of Chinese researchers is included in this article. The contribution of this article is a complete overview of the principal research directions in rough set theory and its applications in China. © 2008 Springer-Verlag Berlin Heidelberg.

关键词： Rough set theory

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A study of the method for intermittency test of Empirical mode decomposition

A study of the method for intermittency test of Empirical mo...

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4th International Conference on Information Technology and Applications, ICITA 2007

作者： Song, Lixin Wang, Qi Wang, Yujing Yan, Jian Department of Electronic and Information Engineering Harbin University of Science and Technology Harbin 150080 China Department of Automation Measurement and Control Harbin Institute of Technology Harbin 150080 China Department of Automation Measurement and Control Harbin Institute of Technology Harbin 150001 China

ISBN: (纸本)0980326702

A new method is presented to solve the mode mixing problem, which caused by intermittency signal of sifting process of Empirical mode decomposition (EMD). For achieving exact location of intermittency signal, the time scale difference between intermittency signal and normal background signal, as well as instantaneous frequency characteristic of intrinsic mode function (IMF) are both used in this method. Depending on the located intermittency signal segment, by boundary extending, redo EMD to separate intermittency signal, accordingly removing the influence of intermittency signal in the following EMD. Compare the results of removing intermittency signal using this method with using wavelet method, results indicate that, using this method, the signal distortion is less than wavelet method. And intermittency signal can be decomposed into one FMF.

关键词： Information technology

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Compensation implementation for improving luminance uniformity of light emitting diode array panel

Compensation implementation for improving luminance uniformi...

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作者： Tsai, Ming-Jong Yeh, S.Y. Wang, K.S. Juan, Chang-Jung Graduate Institute of Automation and Control National Taiwan University of Science and Technology Taiwan Department of Electronic Engineering Hwa Hsia Institute of Technology Taiwan

ISBN: (纸本)9787561752289

In this paper, an automated optical inspection/calibration technology, and a luminance compensated driver were integrated to improve the display uniformity of LED array panels. The luminance data was measured and analyzed to build a compensated Look Up Table (CLUT) according to the luminance curve of a LED lamp. A LED array panel with 16 by 16 pixels was lighted and compensated in this paper. The average luminance uniformity of over 92% was achieved. The proposed compensation mechanism can improve the luminance uniformity and could be applied into either automatic voltage compensated driver or pulse width modulation with constant current driver to solve the problem of luminance non-uniformity of LED display panel.

关键词： Pulse width modulation

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Luminance uniformity compensation for color Organic Light Emitting Diode panel

Luminance uniformity compensation for color Organic Light Em...

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作者： Tsai, Ming-Jong Chou, Chien-Hui Juan, Chang-Jung Yeh, S.Y. Wu, Chung-Yu Graduate Institute of Automation and Control National Taiwan University of Science and Technology Taiwan Department of Electronic Engineering Hwa Hsia Institute of Technology Taiwan

ISBN: (纸本)9787561752289

This paper proposes a compensation mechanism to improve the display uniformity of color Organic Light Emitting Diode panels. The average luminance for 64 non-neighbor blocks of 4 by 4 pixels area are measured by a chroma meter. By using a linear interpolation method, the system computes the compensation factor of all unmeasured pixels inside the panel and stores the compensated data in Area Compensation Look-up table(ACLUT). Then, the actual output value was obtained by multiplying the original display by the calibrated factor. By using such a compensation mechanism, the luminance uniformity of a color oled panel can be improved. A color OLED panel of 96 × 64 pixels was examined in this paper. From the experimental results, the luminance uniformity is improved to over 92% in average. So it proves that this method can effectively improve the non-uniform luminance which may be caused during the manufacturing process.

关键词： Color

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Parallel digital signal processing using multi-issue instructions

Parallel digital signal processing using multi-issue instruc...

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Signal Processing: Algorithms, Architectures, Arrangements, and Applications, SPA 2007

作者： Dabrowski, Adam Pawlowski, Pawel Marciniak, Tomasz Poznań University of Technology Department of Control and System Engineering Division of Signal Processing and Electronic Systems ul. Piotrowo 3a 60-965 Poznań Poland

ISBN: (纸本)9781424415144

This paper presents aspects of parallelism of computations in processing of signals using digital signal processors (DSPs) with multi-issue assembler instructions. We present general features of the contemporary DSPs with special attention paid to the VLIW architecture. In order to illustrate the multi-issue instruction technique we analyze performance of the fixed-point Blackfin processor by means of chosen typical signal processing tasks realized using VisualDSP++ 4.5 environment with Software Development Kit 2.01. Aspects of the floating-point processing are analyzed using Sharc and TigerSharc processors. © 2007 IEEE.

关键词： Digital signal processors

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OBJECTIVE DIRECTED control USING LOCAL MINIMISATION FOR AN AUTONOMOUS UNDERWATER VEHICLE

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IFAC Proceedings Volumes 2007年第15期40卷 72-77页

作者： Lars Alminde Jan D. Bendtsen Jakob Stoustrup Kristin Y. Pettersen Department of Electronic Systems Section of Automation and Control Aalborg University Department of Engineering Cybernetics Norwegian University of Science and Technology

This paper presents a new method for control of complex MIMO plants based on a quantised state description. The control algorithm solves a minimisation problem for a set of user defined convex control objective functions with the plant dynamics as a constraint. The solution makes use of local linear models that are effectively calculated by propagating the state on-line using a quantised state description. The method is demonstrated on a model of an autonomous underwater vehicle.

关键词： non-linear MIMO control optimisation quantised state system

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A gain scheduled controller for sinusoidal ripple elimination of AC PM motor systems

A gain scheduled controller for sinusoidal ripple eliminatio...

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2007 Mediterranean Conference on control and automation, MED

作者： Wang, J. Gan, W.C. Qiu, L. Department of Control Theory and Engineering Harbin Institute of Technology China ASM Assembly Automation Ltd. Hong Kong Hong Kong Department of Electrical and Electronic Engineering Hong Kong University of Science and Technology Hong Kong Hong Kong

ISBN: (纸本)142441282X

An adaptive control algorithm for the elimination of torque and velocity ripples in the Alternating Current (AC) Permanent Magnet (PM) motor control systems is presented in this paper. A model of AC PM motor system includes script n sinusoidal disturbances is first developed. The internal model principle (IMP) is then applied to design a controller to eliminate the torque and velocity ripples without estimating the amplitude and the phase values of the sinusoidal disturbances. Based on the IMP and the pole-zero placement technique, a Gain Scheduled (GS) robust Two-Degree-of-Freedom (2DOF) speed regulator is developed to eliminate the torque and velocity ripples and to achieve a desirable tracking response. Using the small gain theorem, the system stability radius is obtained for script n sinusoidal disturbances with slowly time-varying frequencies. The effectiveness of the proposed GS robust 2DOF speed regulator can be shown by the simulation results of an example with two sinusoidal disturbances. ©2007 IEEE.

关键词： controllers

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The Mimo Predictive Pid controller Design

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Asian Journal of control 2008年第4期4卷

作者： M.H. Moradi M.R. Katebi M.A. Johnson Department of Electronic and Electrical Engineering University of Strath-clyde Glasgow GI 1QE UK. Dr. Moradi is a Lecturer in the Department of Electronic and Electrical Engineering University of Bu-Ali Sina in Iran. He obtained the BSc and MSc in 1991 and 1993 from the Sharif University of Technology and Tarbiat Modarres University respectively. Dr. Moradi joined the Bu-Ali Sina University in 1993. In 2002 he obtained his PhD degree from the University of Strath-clyde Glasgow Scotland. His theoretical research interests include predictive PID control advanced classical control generalised predictive control system identification and fault monitoring robust control design computer networks and more recently control through networks. His industrial interests are in the areas of large-scale systems especially power systems and power plant modelling and control supervisory control and process control. Dr. Moradi has published a number of Journal and Conference papers. Dr. Katebi is a senior lecturer in the Department of Electronic and Electrical Engineering University of Strathclyde. His theoretical research interests are currently focused on Non-linear Control and Filtering for Complex Systems Autonomous Control Design System integration and Fault monitoring and Reconfiguration Plant Monitoring through the Internet Discrete Event Simulation Process Optimisation and Robust Control Design. The industrial research interests are in the area of Hot and Rolling for Steel and Aluminium Power Plant Modelling and Control Marine Control Systems Process Control and Wastewater Treatment Control. Dr Katebi is the author/co-author of four books and more than 150 papers and industrial reports. Professor Johnson's academic education began at Coventry University (1969) and continued under the supervision of Professor Greyham Bryant in the field of Control Systems at Imperial College London. He obtained the DIC MSc and PhD from Imperial College leaving for industry in 1978. Subsequent experience was in the

This paper is concerned with the design of Multi-Inputs and Multi-Outputs (MIMO) predictive PID controllers, which have similar performance to that obtainable from model-based predictive controllers. A new PID control structure is defined which incorporates the prediction of future outputs and uses future set point. A method is proposed to calculate the optimal values of the PID gains from generalised predictive control results. A decentralized version of the predictive PID controllers is presented and the stability of the closed loop system is studied. Simulation studies demonstrate the superior performance of the proposed controller compared with a conventional PID controller. The results are also compared with generalised predictive control solutions.

关键词： PID control design predictive PID MIMO controller optimisation

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Improvement of Transient Response of Thermal Power Plant Using VVVF Inverter

Improvement of Transient Response of Thermal Power Plant Usi...

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International Conference on Power electronics and Drive systems (PEDS)

作者： N. Matsui F. Kurokawa Chouryou Control System Company Limited Japan Department of Electrical and Electronic Engineering Nagasaki University Nagasaki Japan

The construction of a thermal power plant is relatively little. However, the thermal power plant holds approximately 65% of world power source. Recently, the concern with the request of improvement for deterioration in the efficiency has been growing in the existing thermal power plant. Especially, it is required the efficiency for a small thermal power plant that is operated in the partial load. An inverter power source is applied to the field of various power electronics for the energy saving. When the inverter power source occurs abnormally, what is at stake is time delay in the transient response of air flow controller to the heating balance of the boiler and NO X of environment factor. Therefore, the purpose of this paper is to present a new air flow control to improve of transient response in partial load for safety operation in the boiler when the inverter of forced draft fan is occurred abnormally. As a result, the combustion remained gas oxygen is back to original condition less than 1.0 second in the all case.

关键词： Transient response Power generation Inverters Boilers Thermal loading Power electronics Delay effects Temperature control Heating Force control

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Comparison between model based controllers for a distributed solar collector field 9

Comparison between model based controllers for a distributed...

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2007 9th European control Conference, ECC 2007

作者： Galvez-Carrillo, M. De Keyser, R. Ionescu, C. Department of Control Engineering and System Analysis Université Libre de Bruxelles Av. F.D. Roosevelt 50 - CP 165/55 BrusselsB-1050 Belgium EeSA Department of Electrical Energy Systems and Automation Ghent University Technologiepark 913 GentB-9052 Belgium

ISBN: (纸本)9783952417386

This work presents the comparison between the results obtained from applying three different control strategies for regulating the temperature in a distributed solar collector (DSC) field. A nonlinear predictive control strategy, the Nonlinear Extended Prediction Self-Adaptive control (Nonlinear EPSAC or NEPSAC), is compared with a linear predictive controller and a PI controller. All control strategies include a Smith Predictor and use a model of the process for the tuning of the controllers. Simulations on a model based on physical and geometric properties of the solar field are performed and controllers are validated on real data measurements. © 2007 EUCA.

关键词： Solar energy

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