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SICE Annual Conference

作者： Juntao Li Yingmin Jia Junping Du Fashan Yu Department of Systems and Control Beihang University Beijing China Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia School of Computer Science and Technology Beijing University of Posts and Telecommunications Beijing China School of Electrical Engineering and Automation Henan Polytechnic University Jiaozuo Henan China

This paper proposes an adaptive multi-class support vector machine for simultaneous microarray classification and gene selection. By evaluating the gene ranking significance, the adaptive multi-class support vector machine is shown to encourage an adaptive grouping effect in the process of building classifiers, thus leading a sparse multi-classifiers with enhanced interpretability. Based on a reasonable correlation between the two regularization parameters, an efficient solution path algorithm is developed for solving the proposed support vector machine. Experiments performed on the leukaemia data set are provided to verify the obtained results.

关键词： Support vector machines Support vector machine classification Electronic mail Programmable control Adaptive control Gene expression Learning systems Automatic control control systems Telecommunication control

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An innovative generation control system for improving design and stability of shipboard medium-voltage DC Integrated Power System

An innovative generation control system for improving design...

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IEEE Electric Ship Technologies Symposium, ESTS

作者： Vittorio Arcidiacono Antonello Monti Giorgio Sulligoi Research & Development Division M. A. I. Control Systems Limited Milan Italy Institute of Automation of Complex Power Systems E.ON Energy Research Center RWTH Aachen University Aachen Germany Department of Electrical Electronic and Computer Engineering University of Trieste Trieste Italy

Ensuring system stability in medium-voltage DC (MVDC) integrated power systems (IPS) is a key issue, due to the presence of many shipboard electric users fed by constant power load (CPL) converters. This paper presents an innovative control system aimed at utilizing alternators, connected to the IPS through controlled AC-DC interface converters, to improve MVDC stable voltage control. Such system is designed to control, for each shipboard generator, the AC machine voltage, the prime mover speed and the interface converter, in an integrated way. Technological aspects and control principle scheme of this system will be presented in the paper, with particular reference to the issue of DC-link voltage stability. This system is expected to bring advantages in terms of MVDC IPS integration, stable parallel operation of generators and loads, safe exploitation of alternators capability as a source of stabilizing power.

关键词： Power system stability DC generators Power generation control systems Medium voltage Power system control Power systems Voltage control Alternators Analog-digital conversion

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Partial feedback control of quantum systems using probabilistic fuzzy estimator

Partial feedback control of quantum systems using probabilis...

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IEEE Conference on Decision and control

作者： Chunlin Chen Gerasimos G. Rigatos Daoyi Dong James Lam State Key Laboratory for Novel Software Technology Nanjing University China Unit of Industrial Automation Industrial Systems Institute Rion Greece State Key Laboratory of Industrial Control Technology Zhejiang University and the School of Engineering and Information Technology University of New South Wales Canberra ACT Australia Department of Mechanical Engineering University of Hong Kong Hong Kong China

ISBN: (纸本)9781424438716

A partial feedback control scheme with a probabilistic fuzzy estimator (PFE) is presented for the robust control of quantum systems. In this scheme, a probabilistic fuzzy simulator is trained to estimate the quantum states for feedback control of quantum systems. Usually, the estimated state is fed back to design a controller. However, when the estimated quantum state is an almost-eigenstate, a projective measurement will be triggered for the quantum system and the measurement results will be fed back to construct the controller and regulate the fuzzy estimator. This scheme is a partial feedback strategy with controlled discontinuous measurement, where the quantum measurement serves as a control tool and is helpful for driving the quantum system to a desired state tracking even in the presence of unknown disturbances and stochastic noises. An example of a two-spin-¿ system is also presented to demonstrate the proposed approach.

关键词： Feedback control Fuzzy control Fuzzy systems State estimation control systems Noise measurement Robust control State feedback Stochastic systems Stochastic resonance

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Qualitative control for mobile robot navigation based on reinforcement learning and grey system

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Mediterranean Journal of Measurement and control 2008年第1期4卷 1-7页

作者： Chen, Chunlin Dong, Daoyi Chen, Zonghai Wang, Haibo School of Management and Engineering Nanjing University Nanjing China State Key Laboratory for Novel Software Technology Nanjing University Nanjing China Key Laboratory of Systems and Control Institute of Systems Science Beijing China Department of Automation University of Science and Technology of China China

A qualitative control method using reinforcement learning (RL) and grey system is developed for mobile robot navigation in an unknown environment. New representation and computation mechanisms are key approaches for learning and control problems with incomplete information or in large probabilistic environments. In this paper, the uncertainties in sensor information and qualitative localization are represented using grey systems. Traditional RL methods are also combined with grey theory for mobile robot navigation control and a new grey reinforcement learning (GRL) method is proposed to solve complex problems where environment information is incomplete and grey models are constructed through representing incomplete information with grey algebra. The experimental results verify the effectiveness and superiority of the qualitative control system and the presented approaches also show alternative ways for the measurement and learning control problems with incomplete information of the environment. Copyright © 2008 SoftMotor Ltd.

关键词： Mobile robots

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Robust control of a High Precision 4-DOF Parallel Manipulator

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IFAC Proceedings Volumes 2008年第2期41卷 15708-15713页

作者： Jacob W.F. Cheung Y.S. Hung Motion Control and Systems Laboratory Research and Development Department ASM Assembly Automation Ltd. 3/F Watson Centre 16 Kung Yip Street Kwai Chung New Territories Hong Kong Department of Electrical and Electronic Engineering The University of Hong Kong Pokfulam Road Hong Kong

A model-based robust control design approach is considered for a novel direct-drive 4-DOF parallel manipulator aimed at high speed and high precision semiconductor packaging applications. An experimental identification method is proposed to determine the dynamic model of the manipulator and a robust feedback controller is designed in the frequency-domain using genetic algorithm. Experimental results demonstrate that the motion performance of the 4-DOF parallel manipulator including positioning accuracy and steady-state error is improved significantly when compared with traditional XY, Z and θ motion stages. This shows that the proposed 4-DOF parallel manipulator provides a superior alternative to the traditional motion stages for high-precision motion.

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A New Current-Doubler Rectifier Based on Three-State Switching Cell for Buck Derived DC-DC Converters

A New Current-Doubler Rectifier Based on Three-State Switchi...

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39th IEEE Power Electronics Specialists Conference (PESC 2008), vol.6

作者： Rene P. Torrico-Bascope Grover V. Torrico-Bascope Carlos G. C. Branco Demercil S. Oliveira Fernando L. M. Antunes Electrical Engineering Department Energy Processing and Control Group Federal University of Ceará Fortaleza Ceara Brazil Department of Research and Development Eltek Valere Stockholm Sweden Industrial Automation Research Group Technological Education Federal Centre of Ceará Maracanau Ceara Brazil

This paper presents a new current-doubler rectifier for application on buck derived DC-DC converters, such as, push-pull, half-bridge, full-bridge, dual-bridge, NPC three-level, and others. This new proposal, named as Three-State Rectifier (TSR), is generated using the three-state switching cell. The proposed rectifier is similar to the Center Tapped Rectifier (CTR), and to the current-doubler rectifier named Interleaving Rectifier (IR). The new rectifier circuit is an alternative to substitute the previous rectifiers topologies, operating with rectifier diodes only, or with synchronized switches depending on the output voltage rating. Advantages of such a new proposal are: the current through the components of the converter are less pulsated which reflects in the conduction losses reduction and the current in the secondary winding of the transformer reaches maximum half of the output average current. The disadvantage of the proposed converter is that the sizes of the autotransformer and the inductor, both equals, are 20percent higher than the sizes of the inductors of the IR rectifier. In order to verify the theoretical analysis and compare its performance with similar ones proposed in literature, experimental results consisting of relevant waveforms and curves from a full-bridge phase-shift control DC-DC converter with TSR rectifier and IR rectifier are presented, for a 1.5kW output power prototype, an input voltage of 400V and output voltage of 60V.

关键词： Rectifiers Inductors Windings Converters Power generation Voltage control Transformer cores

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Tele-controle in electrical stations

Tele-controle in electrical stations

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作者： Vladuţ, Gabriel Fetoiu, Marius Dobriceanu, Mircea Popescu, Mihaela Dobriceanu, Dan Octavian IPA Craiova Subsidiary Automation Engineering Institut Craiova Romania Electromechanical Engineering Faculty University of Craiova Romania NetRom Software Development Department Romania

ISBN: (纸本)9783902661388

The extension of computational technique for the generalization of automatics, information and process monitoring involve the conception and materialization of complex data acquisition equipments, processing, memorizing and sending data taken from those processes at a higher level - dispatcher. In this way, it is presented data acquisition equipment for energetic measures which is incorporated in a dispatching system aiming the monitoring and storing of electrical measures which are taken from electrical cells which compose the supervised electrical station. There are distinguished the component elements of the monitoring system: Local data acquisition equipments (LDAqE), Local data acquisition equipments synchronization subsystem, Data communication subsystem, Processing, storing and data displaying subsystem and the software for data processing at the dispatcher level and also at the local data acquisition equipment level. Copyright © 2007 IFAC.

关键词： Process monitoring

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Research on rough set theory and applications in China

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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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TELE-controlE IN ELECTRICAL STATIONS

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IFAC Proceedings Volumes 2007年第8期40卷 182-187页

作者： Gabriel VLADUt Marius FETOIU Mircea DOBRICEANU Mihaela POPESCU Dan Octavian DOBRICEANU IPA Craiova subsidiary Automation Engineering Institut Craiova Romania University of Craiova Electromechanical Engineering Faculty NetRom Software Development Department

关键词： Data transmission Energy management systems Measurement Transducers Daq Dispatcher

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An Integrated software Environment For Powertrain Feasibility Assessment Using Optimization And Optimal control

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Asian Journal of control 2008年第3期8卷

作者： Ilya V. Kolmanovsky Jing Sun Shiva N. Sivashankar During the summer of 1993 he was a visiting scholar in the Department of Aeronautics and Astronautics Naval Postgraduate School Monterey CA where he worked on control systems for unmanned aerial vehicles. From 1993 to 2000 he was with Ford Research Laboratory working on several design aspects of powertrain control systems and processes for embedded control software development. He is currently the Vice President for Technology at Emmeskay Incorporated a company that provides systems engineering based products and services. His research interests include modeling and control of automotive systems application of systems engineering methods and tools to product development processes and multivariable robust control and estimation methods. Dr. Sivashankar has served as an associate editor for the ASME Journal of Dynamic Systems Measurement and Control.

With the increase in automotive powertrain complexity, an upfront assessment of powertrain capability in meeting its design targets is important early on in the development programs. The optimization of control policy based on powertrain simulation models can facilitate this assessment and establish limits of achievable performance for a given powertrain configuration and parameters. The paper discusses several computational optimization and user interface solutions for deploying a numerical optimal control approach in a user-friendly software environment.

关键词： Powertrain control powertrain assessment optimal control optimization dynamic programming

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