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control SYSTEM DESIGN CONSIDERING A TRADEOFF BETWEEN EVALUATED UNCERTAINTY RANGES AND control PERFORMANCE

Asian Journal of control 2008年第1期1卷

作者： Y. Wakasa Y. Yamamoto Dept. of Applied Analysis and Complex Dynamical Systems Graduate School of Informatics Kyoto University Kyoto Japan. Yuji Wakasa was born in Okayama Japan in 1968. He received the B.S. and M.S. degrees in engineering from Kyoto university Japan in 1992 and 1994 respectively. From 1994 to 1998 he was a Research Associate in the Department of Information Technology Okayama University. Since April 1998 he has been a Research Associate in the Graduate School of Informatics Kyoto University. His current research interests include robust control and control system design via mathematical programming. Yutaka Yamamoto received his B.S. and M.S. degrees in engineering from Kyoto University Kyoto Japan in 1972 and 1974 respectively and the M.S. and Ph.D. degree in mathematics from the University of Florida in 1976 and 1978 respectively. From 1978 to 1987 he was with Department of Applied Mathematics and Physics Kyoto University and from 1987 to 1997 with Department of Applied System Science. Since 1998 he is a professor at the current position. His current research interests include realization and robust control of distributed parameter systems learning control sampled-data systems and digital signal processing. Dr. Yamamoto is a receipient of the Sawaragi memorial paper award (1985) the Outstanding Paper Award of SICE (1987) Best Author Award of SICE (1990) the George Axelby Outstanding Paper Award of IEEE CSS in 1996 Takeda Paper Prize of SICE in 1997. He is a Fellow of IEEE. He was an associate editor of Automatica. He is currently an associate editor of IEEE Transactions on Automatic Control Systems and Control Letters and Mathematics of Control Signals and Systems. He is a member of the IEEE the Society of Instrument and Control Engineers (SICE) and the Institute of Systems Control and Information Engineers.

This paper presents a design method of control systems such that a designer can flexibly take account of tradeoffs between evaluated uncertainty ranges and the level of control performance. The problem is reduced to a BMI problem and approximately solved by LMIs. The convergence of the proposed approximation is proved in a modified sense. A numerical example shows the effectiveness of the proposed method in comparison with the standard robust control.

关键词： control system design LMI BMI tradeoff curves

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Delta Domain Design of Low-Cost Fuzzy controlled Servosystems

Delta Domain Design of Low-Cost Fuzzy Controlled Servosystem...

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IEEE International Symposium on Intelligent Signal Processing

作者： Radu-Emil Precup Zsuzsa Preitl Emil M. Petriu Dept.of Automation and Applied Informatics “Politehnica” University of Timisoara Timisoara Romania Dept. of Control and Transport Automation Budapest University of Technology and Economics Budapest Hungary School of Information Technology and Engineering University of Ottawa Ottawa ON Canada

ISBN: (纸本)1424408296;97

The paper presents a new design method for low-cost fuzzy control systems used in mechatronics, characterized by second-order dynamics of integral type, controlled by two-degree-of-freedom Pi-fuzzy controllers. The method, referred to as delta domain design, consists of three design steps based on continuous-time linear case design results expressed in terms of the Extended Symmetrical Optimum method applied in the delta domain, followed by the transfer of these results to the fuzzy case. The new design method and Mamdani Pi-fuzzy controllers are validated by real-time experiments in controlling a nonlinear servosystem.

关键词： Fuzzy control Servosystems control systems Design methodology Cascading style sheets Sampling methods automatic control Design automation Mechatronics Vehicle dynamics

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International master in environmental process control engineering: An interdisciplinary approach to Curriculum Development

International master in environmental process control engine...

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SEFI and IGIP Joint Annual Conference 2007: Joining Forces in engineering Educations Towards Excellence

作者： Vilanova, R. Capodaglio, A. Katebi, R. Vehi, J. Escola Tècnica Superior d'Enginyeria University Autonoma of Barcelona Campus UAB Bellaterra08193 Spain Department of Hydraulic and Environmental Engineering Università Degli Studi di Pavia Pavia Italy Dept. of Electronic and Electrical Engineering Industrial Control Centre University of Strathclydc Glasgow GlasgowG1 1XQ United Kingdom Electronics Informatics and Automatics Institut d'Informàtica i Aplicacions University of Girona Campus Montilivi Girona17071 Spain

ISBN: (纸本)9789636617721

This communication's aim is to present an International experience in new Curriculum Development from the perspective of the new challenges for Higher Education in Europe, and with an interdisciplinary approach to content design. Bearing in mind the depicted future for the High Education Area in Europe, it is important to have the opportunity to learn from existing experiences. It is in this sense that this paper reports some important facts and rationales regarding both the development and the management of a Curriculum Development project, as well as the innovative features with respect to the curriculum's contents. Even though there exists a useful compendium on issues to be taken into account when facing a joint master's programme definition [1], this experience born out of an interdisciplinary consortium may provide interesting distinctive features and special added value for both the curriculum and engineering education. In a more concise way, this paper will present a) Body of knowledge of the master, envisioned as an interdisciplinary curriculum where synergies on both knowledge and procedures are intended to provide an added value. b) How the curriculum is structured and the main points identified as valuable for an International European Master programme. c) Management structures and information flows adopted, described from a management point of view.

关键词： Curricula

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Application of fuzzy logic in weighted information of fusion fingerprints and palm prints

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Journal of Harbin Institute of Technology(New Series) 2006年第6期13卷 715-717页

作者：杨帆浦昭邦陈世哲 Dept. of Automatic Testing and Control Harbin Institute of Technology Information Engineering College Hebei Institute of Technology Tianjin 300130 China

It is a developing job to distinguish identifications with information fusion of fingerprints and palm prints. It is also a very effective way to resolve the problem of low identification rate and low stability of single biology characteristic identification. Based on the theory of fuzzy logic theory, we bring out the method of obfuscating weigh coefficient and reliability to fuse the information of fingerprints and palm prints to realize high identification rate. The experiment proves the feasibility and effectiveness of this method and the identification rate can be more than 90%, which contributes useful experience to the research of identification using biology characteristics.

关键词： fuzzy logic weighted information fusion identity discrimination

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New algorithm for infrared small target image enhancement based on wavelet transform and human visual properties

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Journal of Systems engineering and Electronics 2006年第2期17卷 268-273页

作者： Wang Xuewei Liu Songtao Zhou Xiaodong Automatic Control Engineering Dept. Naval Aeronautical Engineering Inst. Yantai 264001 P. R. China

The key to the wavelet based denoising teehniquea is how to manipulate the wavelet coefficients. By referring to the idea of Inclusive-OR in the design of circuits, this paper proposes a new algorithm called wavelet domain Inclusive-OR denoising algorithm（WDIDA）, which distinguishes the wavelet coefficients belonging to image or noise by considering their phases and modulus maxima simultaneously. Using this new algorithm, the denoising effects are improved and the computation time is reduced. Furthermore, in order to enhance the edges of the image but not magnify noise, a contrast nonlinear enhancing algorithm is presented according to human visual properties. Compared with traditional enhancing algorithms, the algorithm that we proposed has a better noise reducing performanee , preserving edges and improving the visual quality of images.

关键词： image enhancement wavelet transform human visual properties inclusive-OR.

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ATQL: Adaptive target queue length adjustment for AQM controllers to meet dynamic traffic environment

ATQL: Adaptive target queue length adjustment for AQM contro...

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1st IEEE International Conference on Wireless Broadband and Ultra Wideband Communications, AusWireless 2006

作者： Fang, Shudong Sun, Jinsheng Berber, Stevan M. Dept. of Electrical and Computer Engineering Univ. of Auckland New Zealand Dept. of Automatic control Nanjing Univ. of Sci. and Tech. China

ISBN: (纸本)0977520005

An adaptive target queue length (ATQL) adjustment algorithm proposed in this paper cooperates with certain Active Queue Management (AQM) controllers to achieve more efficient buffer management for Internet congestion control. ATQL algorithm which estimates the average traffic load and dynamically adjusts the target queue length in dynamic traffic environment can be easily embedded into a series of AQM controllers. By engaging ATQL, AQM controllers are more suited to random and unpredictable traffic scenarios. Simulations are applied to validate ATQL's ability in assisting AQM controllers in sustaining stable drop probability, minimizing unnecessary packet loss, guaranteeing the link utility and maximizing the exploitation of buffer spaces.

关键词： Queueing theory

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Physiological modelling and analysis of the pulmonary microcirculation in septic patients

Physiological modelling and analysis of the pulmonary microc...

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作者： Denaï, M.A. Mahfouf, M. King, O. Ross, J.J. Dept. of Automatic Control and Systems Engineering University of Sheffield United Kingdom Dept. of Anaesthetics Northern General Hospital Sheffield United Kingdom

ISBN: (纸本)9783902661180

A physiological model integrating a pulsatile cardiovascular system model with a model of the pulmonary capillary fluid exchange based on the Starling's equations is proposed in order to analyse the micro-circulatory physiological alterations which occur during the evolution of sepsis. Sepsis-induced acute lung injury is typically characterized by an increased microvascular permeability and interstitial edema. Pulmonary edema occurs because the capillary filtration capacity increases and the reflection coefficient to proteins decreases causing fluid leak across the capillary barrier. Patients with severe sepsis may develop respiratory failure and hence requiring ventilatory support. These signs represent the clinical expression of the acute respiratory distress syndrome (ARDS) and are associated with high mortality in medical intensive care units (ICU). The proposed model is used to simulate the cardiovascular hemodynamics under these complex pathophysiological conditions. Copyright © 2006 IFAC.

关键词： Physiological models

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A comparative analysis of two neural-network-based estimators for efficiency optimization of an induction motor drive

A comparative analysis of two neural-network-based estimator...

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10th IEEE International Power Electronics Congress, CIEP 2006

作者： Mino-Aguilar, G. Moreno-Eguilaz, J.M. Pryymak, B. Peracaula, J. Beristain, J.A. Dept. of Electronic and Engineering Barcelona Spain E.O. Paton Electric Welding Institute Dept. of Automatic Control Systems Kyiv Ukraine Technical Institute of Sonora Dept. of Electrical Electronic Engineering Sonora Mexico

ISBN: (纸本)1424405459

A comparative analysis on vector-controlled induction motor drive with efficiency optimization using a neural-network-based and a model-losses-based approaches as flux estimator is presented in this paper. On-line estimators for rotor, stator resistances, and mutual inductance are included, two different neural networks were trained varying their inputs, and was used the losses-model-based estimator with some estimated and nominal parameters. Modeling and simulation results are presented to confirm the best performance approach. © 2006 IEEE.

关键词： Induction motors

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Optimal deployment of distributed passive measurement monitors

Optimal deployment of distributed passive measurement monito...

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2006 IEEE International Conference on Communications, ICC 2006

作者： Chengchen, Hu Bin, Liu Zhen, Liu Shifang, Gao Dapeng, Wu Dept. of Computer Science and Technology Tsinghua University Beijing China Dept. of Automatic Control Northwest Polytechnical University Xi'an Shaanxi China Dept. of Electrical and Computer Engineering University of Florida Gainesville FL United States

ISBN: (纸本)1424403553

Flow-level traffic measurement is important for network management. The widely used centralized per-flow measurement faces a great challenge due to the demanding requirement on both memory bandwidth and memory size within a single traffic monitor. This paper addresses the issue of deploying a Distributed Passive Measurement System (DPMS) in a large scale network;specifically, we study how to optimally place traffic monitors and sample stochastic traffic flows, so that the probability of a packet being sampled (a.k.a. measurement coverage) is maximized. We formulate this problem as a Stochastic Chance Constrained Optimization (SCCO) problem;and we propose a Hybrid Intelligent (HI) algorithm to solve this problem. The HI algorithm consists of two major components, namely, uncertain function approximation and genetic algorithm. Equipped with the HI algorithm, we are able to address the optimal tradeoff between measurement coverage and deployment cost for networks with random traffic, which has not been studied before. Our simulations and experiments demonstrate the effectiveness of our algorithm, i.e., a small deployment cost or a small number of monitors are sufficient to maintain a high level of measurement coverage. © 2006 IEEE.

关键词： Telecommunication traffic

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Algorithm for infrared small target image enhancement based on wavelet transform and human visual properties

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Journal of Systems engineering and Electronics 2006年第2期17卷 268-273页

作者： Wang, Xuewei Liu, Songtao Zhou, Xiaodong Automatic Control Engineering Dept. Naval Aeronautical Engineering Inst. Yantai 264001 China

The key to the wavelet based denoising techniques is how to manipulate the wavelet coefficients. By referring to the idea of Inclusive-OR in the design of circuits, this paper proposes a new algorithm called wavelet domain Inclusive-OR denoising algorithm(WDIDA), which distinguishes the wavelet coefficients belonging to image or noise by considering their phases and modulus maxima simultaneously. Using this new algorithm, the denoising effects are improved and the computation time is reduced. Furthermore, in order to enhance the edges of the image but not magnify noise, a contrast nonlinear enhancing algorithm is presented according to human visual properties. Compared with traditional enhancing algorithms, the algorithm that we proposed has a better noise reducing performance, preserving edges and improving the visual quality of images.

关键词： Image enhancement

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