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2005 IEEE Power engineering Society General Meeting

作者： Jiang, Xia Chow, Joe H. Edris, Abdel-Aty Uzunovic, Edvina Fardanesh, Bruce Parisi, Michael Wei, Xuan Electrical Computer and Systems Engineering Department Rensselaer Polytechnic Institute Troy NY 12180-3590 Electric Power Research Institute Palo Alto CA 94303-0813 New York Power Authority White Plains NY New York Power Authority Utica NY Guidant Corporation Saint Paul MN Electrical Computer and Systems Engineering Department Rensselaer Polytechnic Institute Science and Technology Division EPRI CA IEEE CIGRE Working Groups New York Power Authority Energy Control Center Cardiac Rhythm Management Division Guidant Corporation Saint Paul MN

ISBN: (纸本)078039156X

Because of their flexible performance, converter-based transmission controllers such as Unified Power Flow controller (UPFC) can be very effective in improving power transfer capability over congested transmission paths. In most published literature, a shunt converter is set to control the bus voltage and a series converter is to control the line power flow. In practical operations, however, there are other control modes that are more appropriate. In the case of the Convertible Static Compensator (CSC) installed at the New York Power Authority's Marcy substation, CSC can operate in 11 configurations of different shunt and series connections. A simulation program capable of dispatching in 49 different control modes associated with these 11 configurations is being developed. The paper discusses how these control modes can be efficiently implemented and used. © 2005 IEEE.

关键词： Power converters

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An improved multiagent reinforcement learning algorithm

An improved multiagent reinforcement learning algorithm

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IEEE/WIC/ACM International Conference on Intelligent Agent Technology (IAT)

作者： Xiangping Meng R. Babuska L. Busoniu Yu Chen Wanyu Tan Department of Electrical Engineering Changchun Institute of Posts and Telecommunications China Department of Electrical Engineering Changchun Institute of Technology P. R. China Delft Center for Systems and Control Delft University of Technology The Netherlands Department of Computer Engineering Northeast China Institute of Electric Power P.R. China

An improved reinforcement learning algorithm is proposed in this paper. This algorithm is based on linear programming method for finding the best-response policy. A pursuit example is tested and the results show that this algorithm has some properties, such as easy computation, simple operation procedure and can guarantee a good learning convergence.

关键词： Learning Stochastic processes Multiagent systems Linear programming Testing Pursuit algorithms control systems Power engineering computing Power engineering and energy Convergence

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Improved Genetic Algorithm for Integrated Steelmaking Optimum Charge Plan

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IFAC Proceedings Volumes 2005年第1期38卷 61-66页

作者： Yun-Can Xue Xin Wang Shao-Yuan Li College of Computer & Information Engineering Hohai University Changzhou China Institute of Automation Shanghai Jiao Tong University Shanghai China Institute of Information & Control Technology Center of Electrical & Electronic Technology Shanghai Jiao Tong University Shanghai China

The shortcoming of the standard genetic algorithm is analysed. An improved genetic algorithm with modified mutation operator and adaptive probabilities of crossover and mutation is proposed. Simulation experiments have been carried and the results show that the modifications are very effective. In this paper, an optimum charge plan for steelmaking continuous casting production scheduling is also studied. The charge plan model is established. The modified genetic algorithm is used to solve the optimum charge plan problem. The computation with practical data shows that the model and the modified genetic algorithm are very effective.

关键词： steel manufacture modelling scheduling algorithms genetic algorithms operators optimisation

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CONTINUOUS TIME SYSTEM IDENTIFICATION OF NONPARAMETRIC MODELS WITH CONSTRAINTS

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IFAC Proceedings Volumes 2005年第1期38卷 213-218页

作者： Liuping Wang Peter J. Gawthrop Peter C. Young School of Electrical and Computer Engineering RMIT University Melbourne Australia Center for Systems and Control and Department of Mechanical Engineering University of Glasgow GLASGOW. G12 8QQ Scotland Centre for Research on Environmental Syst. and Stat. Lancaster University LA 14 YQ UK

Although structural constraints such as model order and time delay have been incorporated in the continuous time system identification since its origin, the constraints on the estimated model parameters were rarely enforced. This paper proposes a continuous time system identification approach with constraints. It shows that by incorporating physical parameter information known a priori as hard constraints, the traditional parameter estimation schemes are modified to minimize a quadratic cost function with linear inequality constraints. Using the structure of Frequency Sampling Filters as the vehicle, the paper shows that the constraints can be readily imposed on continuous time frequency response estimation and step response estimation. In particular, a priori knowledge in both time-domain and frequency domain is utilized simultaneously as the constraints for the optimal parameter solution. A Monte-Carlo simulation study with 100 noise realization is used to demonstrate the improvement of the estimation results in terms of continuous time frequency response and continuous time step response.

关键词： Continuous time system identification nonparametric model frequency response step response constraints

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Iterative learning control for cross-coupled contour motion systems

Iterative learning control for cross-coupled contour motion ...

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IEEE International Conference on Mechatronics and Automation

作者： HongSheng Li Xingpeng Zhou YangQuan Chen Department of Automatic Control South-East University Nanjing Jiangsu China Center for Self-Organizing and Intelligent Systems Department of Electrical and Computer Engineering Utah State University Logan UT USA

Iterative learning control (ILC) is a powerful control concept that iteratively improves the behavior of processes that are repetitive in nature and cross-coupled control (CCC) has been developed to effectively reduce the contouring error. This paper proposes an integrated controller which combines ILC and CCC to achieve a better performance. In the presented preliminary simulation study, smaller contour error and tracking error can be achieved and moreover, contouring error is less oscillatory because CCC suppresses the inter-axis mismatch "cross error".

关键词： Motion control control systems Error correction computer errors computer numerical control Feedback loop Automatic control Adaptive control Feedforward systems Tracking loops

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A New Protection Scheme for Fault Location and Relay by Matrix Operation Method in Transmission Lines

A New Protection Scheme for Fault Location and Relay by Matr...

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IEEE/PES Transmission and Distribution Conference and Exhibition: Asia and Pacific

作者： X.F. Zuo H. Kuribayashi T. Inagaki K. Tsuji T. Hiyama Development Center of Marketing & Engineering Division Kyuki Company Inc. Fukuoka Japan Toyama East Synthesis Control Station Hokkaido Electrical Power Company Inc. Toyama Japan Techno Tsuji Limited Toyama Japan Department of Electrical and Computer Engineering Kumamoto University Kumamoto Japan

This paper presents additional functions of the newly developed matrix operation type protection relay in power transmission lines. The paper presents the basic principle of fault location, the function of integrated protection, corresponding of the system configuration, the regular surveillance, and the results of simulation test. The general equations, which are utilized for the fault detection and the fault location, are derived from the basic equations based on the principle of Kirchhoff's first and second laws for the study transmission system. The proposed protection relay, differing from the conventional digital ones, enable to generalize the required protection functions such as the grounding fault protection, the short-circuit fault protection, the main and the backup protection based on a equivalent circuit for the study system. The function of regular surveillance can be realized to satisfy the voltage balance calculated by the off-line constants and the estimated on-line parameters synthetically. It ensures effectively the reliability of the proposed protection system. The new functions are developed naturally from the principles of the matrix operation type protection relay. Simulation studies and laboratory experiments have clarified the fact that the proposed protection scheme provides an innovative way to solve many problems still remained

关键词： Transmission line matrix methods Fault location Protective relaying Power system protection Power system relaying Power transmission lines Surveillance Equations Circuit faults System testing

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Robust stability check of fractional order linear time invariant systems with interval uncertainties

Robust stability check of fractional order linear time invar...

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IEEE International Conference on Mechatronics and Automation

作者： YangQuan Chen Hyo-Sung Ahn I. Podlubny Center for Self-Organizing and Intelligent Systems CSOIS Department of Electrical and Computer Engineering Utah State University Logan UT USA Department of Informatization and Control of Processes Technical University of Kosice Kosice Slovakia

For uncertain fractional-order linear time invariant (FO-LTI) systems with interval coefficients described in state space form, the robust stability check problem is solved for the first time in this paper. Both the checking procedure and the Matlab code are presented with two illustrative examples. The conservatism is shown to be small.

关键词： Robust stability Time invariant systems Uncertainty control systems controllability System testing Intelligent systems State-space methods Calculus Process control

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Advanced DSP based system for image transmission over GSM/GPRS networks

Advanced DSP based system for image transmission over GSM/GP...

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12th International Workshop on Systems, Signals and Image Processing

作者： Mohorko, J Gleich, D Planinsic, P Ultra Advanced Research Center Ultra D.o.o. Co. Cesta Otona Zupancica 23a Slovenia Faculty of Electrical Engineering and Computer Science University of Maribor 2000 Maribor Gosposvetska ulica 84 Slovenia University of Maribor Slovenia Ultra D.o.o Co. Slovenia IEEE Slovenia Laboratory for Signal Processing and Remote Control University of Maribor Slovenia DLR Institute in Oberpfaffenhofen Germany SPIE

ISBN: (纸本)0907776205

In this article the development of the prototype of complex hierarchical organized sensor/control system that enables the capture and transmission of high quality images through mobile networks is described. Compression methods (codecs) for image information contents are used for effective image transfer through bandwidth limited communication channel. JPEG method is one of the implemented methods. It is the most known standard method on the field of lossy methods, but it gives poor results at high compression rations. The best compression methods are based on Wavelet transformation. In our implementation lifting scheme for a 9/7-filter bank was used to compute wavelet transform and the novel coding process and ordering of bit plane bits is presented which is comparable with a JPEG2000 codec in rate-distortion sense and has lower computational complexity as JPEG2000. A trade-off between a complexity and efficiency has been made to meet the cannel capacity of the GSM/GPPS network. Coder prototype is realized in compact DSP video module with relatively low cornputational power. Usability of the described methods is demonstrated on Internet based application 'Information system for image data collecting and distribution.

关键词： image compression wavelet transform coding internet protocol JPEG GSM GPRS DSP

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Design and Implement the Stimuli Capsule at In-vitro Experiment

Design and Implement the Stimuli Capsule at In-vitro Experim...

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IEEE Region 10 International Conference TENCON

作者： S. H. Woo K. W. Yoon J. H. Lee Y. K. Moon C. H. Won T. W. Kim H. C. Choi J. H. Cho School of Electronic Engineering and Computer Science Kyungpook National University South Korea Department of Computer Control & Electrical Engineering Kyungil University South Korea College of Veterinary Medicine Department of physiology Kyungpook National University South Korea Advanced Research Center for Recovery of Human Sensibility Kyungpook National University South Korea

Recently, the capsule endoscope has been developed to observe image from the inside intestine. Such a capsule endoscope does not have locomotion or hold by it self. To get proper diagnosis and meditation, it is necessary to control capsule from outside to enable to guide locomotion. The designed and implemented capsule has feasibility to contracts the small intestine by electrical stimulus from stimulus pad. When the small intestine is contracted by electrical stimulus, the capsule can move to opposite direction which can boost moving speed of the capsule or change moving direction. The implemented stimuli capsule always monitors excessive energy transmit and automatically shut down electrical stimuli to make more secure. Also the stimuli capsule goes to stand by mode to save battery, and reset by comparator circuit which is connected to two stimulus pad. To verify the design and implement stimuli capsule, in-vitro experiments are performed with pig's small intestine.

关键词： In vitro Intestines Endoscopes Energy consumption Batteries Circuits Valves Moon Design engineering computer science

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Feature selection and combination criteria for improving predictive accuracy in protein structure classification

Feature selection and combination criteria for improving pre...

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IEEE Symposium on Bioinformatics and Bioengineering (BIBE)

作者： Chun Yuan Lin Ken-Li Lin Chuen-Der Huang Hsiu-Ming Chang Chiao Yun Yang Chin-Teng Lin Chuan Yi Tang D.F. Hsu Institute of Molecular and Cellular Biology Singapore Department of Electrical and Control Engineering National Chiao Tung University Hsinchu Taiwan Computer Center Chung-Hua University Hsinchu Taiwan Department of Electrical Engineering Hsiuping Institute of Technology Tachung Taiwan Brain Research Centre Canada Department of Computer Science National Tsing Hua University Hsinchu Taiwan Department of Computer and Information Science Fordham University New York NY USA

The classification of protein structures is essential for their function determination in bioinformatics. The success of the protein structure classification depends on two factors: the computational methods used and the features selected. In this paper, we use a combinatorial fusion analysis technique to facilitate feature selection and combination for improving predictive accuracy in protein structure classification. When applying these criteria to our previous work, the resulting classification has an overall prediction accuracy rate of 87% for four classes and 69.6% for 27 folding categories. These rates are significantly higher than our previous work and demonstrate that combinatorial fusion is a valuable method for protein structure classification.

关键词： Accuracy Support vector machines Support vector machine classification Protein engineering Neural networks computer architecture Testing Bioinformatics Amino acids Sequences

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