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Fuzzy delay compensation control for T-S fuzzy systems over network

IEEE Transactions on Cybernetics 2013年第1期43卷 259-268页

作者： Zhang, Jinhui Shi, Peng Xia, Yuanqing College of Information Science and Technology Beijing University of Chemical Technology Beijing 100029 China Department of Computing and Mathematical Sciences University of Glamorgan CF37 1DL Pontypridd United Kingdom School of Engineering and Science Victoria University Melbourne VIC 8001 Australia School of Electrical and Electronic Engineering University of Adelaide Adelaide SA 5005 Australia School of Automation Beijing Institute of Technology Beijing 100081 China

This paper is concerned with the network delay compensation problem for nonlinear networked control systems (NCSs). By taking full advantage of the characteristics of the packet-based transmission in NCSs, new network delay compensation approaches are proposed to actively compensate the network communication delay under the fuzzy control framework. The nonlinear plant is represented by a Takagi-Sugeno fuzzy model, and the predictive control input packets are constructed based on parallel distributed compensation technique. Both state and output feedback fuzzy delay compensation controllers are designed. Finally, two examples are provided to illustrate the effectiveness and applicability of the developed techniques. © 2012 IEEE.

关键词： Networked control systems

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Simple control system for power converter connecting electrochemical dual-layer capacitors to DC link

Simple control system for power converter connecting electro...

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35th International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2012

作者： Čihak, Tihomir Jakopović, Željko KONČAR - Electrical Engineering Institute Power Electronics and Control Department Zagreb Croatia Faculty of Electrical Engineering and Computing Department of Electric Machines Drives and Automation Zagreb Croatia

ISBN: (纸本)9789532330724

Electrochemical dual layer capacitors, also known by their market names Supercapacitors and Ultracapacitors are perspective technology for many uses, for instance in power saving circuits for electric propulsion systems, short-term energy storage systems, systems for extending battery lifetime and other similar uses. Although they can be used connected directly to a power converter DC link, in most cases they are connected to the DC link through a separate power converter. In use, such an EDLC and power converter assembly, due to EDLC specifics, must reliably operate in numerous operating points, unlike a typical power electronic converter. Such a power converter operation entails many control issues. Some of them are considered in this paper. © 2012 MIPRO.

关键词： Power converters

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Criteria for optimal design of interior permanent magnet motor series

Criteria for optimal design of interior permanent magnet mot...

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2012 20th International Conference on Electrical Machines, ICEM 2012

作者： Žarko, Damir Stipetić, Stjepan University of Zagreb Faculty of Electrical Engineering and Computing Department of Electrical Machines Drives and Automation Unska 3 HR-10000 Zagreb Croatia

ISBN: (纸本)9781467301428

This paper presents a general approach to the optimized design of a series of interior permanent magnet motors with the same lamination cross section. A concept of a referent and particular design has been introduced and analytical expressions which relate the principal machine parameters for the referent and particular machine have been derived. The referent design can be optimized according to a certain criterion which automatically yields the optimal design of the entire series. The particular designs are then obtained from the referent design by varying the stack length, the number of turns per coil and the number of parallel circuits. In order to demonstrate the correctness of the derived design principles the optimized design of a referent machine with IEC frame size 160 has been made by combining the finite-element method and Differential Evolution optimization algorithm from which five particular designs with power ratings ranging from 15 kW to 110 kW have been derived. © 2012 IEEE.

关键词： Optimization

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SEMG-based control of an exoskeleton robot arm

SEMG-based control of an exoskeleton robot arm

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5th International Conference on Intelligent Robotics and Applications, ICIRA 2012

作者： Wang, Baocheng Yang, Chenguang Li, Zhijun Smith, Alex Department of Automation Shanghai Jiao Tong University Shanghai China School of Computing and Mathematics Plymouth University United Kingdom College of Automation Science and Engineering South China University of Technology Guangzhou China

ISBN: (纸本)9783642335143

This paper investigates the processing of surface electromyographic (sEMG) signals collected from the forearm of a human subject and, based on which, a control strategy is developed for an exoskeleton arm. In this study, we map the motion of elbow and wrist to the corresponding joints of an exoskeleton arm. Linear Discriminant Analysis (LDA) based classifiers are introduced as the indicator of the motion type of the joints, and then with the force of corresponding agonist muscles the control signal is produced. In the strategy, which is different from the conventional method, we assign one classifier for each joint, decomposing the motion of the two joints into independent parts, making the recognition of the forearm motion a combination of the results of different joints. In addition, training time is reduced and recognition of motion is simplified. © Springer-Verlag Berlin Heidelberg 2012.

关键词： Discriminant analysis

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A brain-computer interface test-bench based on EEG signals for research and student training

A brain-computer interface test-bench based on EEG signals f...

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IEEE Symposium on Computational Intelligence in Healthcare and e-health

作者： Pawel Raif Mufti Mahmud Amir Hussain Aleksandra Klos-Witkowska Renata Suchanek Dept. of Biosensors and Biomedical Signals Processing Silesian University of Technology Gliwice Poland Department of Electrical Engineering and Automation University of Bielsko-Biala Bielsko-Biala Poland Institute of Information Technology Jahangirnagar University Savar Bangladesh NeuroChip Laboratory University of Padova Padova Italy Department of Medical Genetics Medical University of Silesia Sosnowiec Poland Division of Computing Science & Maths University of Stirling Scotland UK

The paper describes a test-bench model for braincomputer interface research based on EEG signals. The test-bench is going to be used for students training and education. The goal is to prepare modern Brain-Computer In... 详细信息

关键词： Electrodes Electroencephalography Brain-computer interfaces Open source software Educational institutions Brain modeling

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Quasi-interpolation for surface reconstruction from scattered data with radial basis function

Quasi-interpolation for surface reconstruction from scattere...

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作者： Liu, Shengjun Wang, Charlie C.L. School of Mathematical Science and Computing Technology Central South University China Department of Mechanical and Automation Engineering Chinese University of Hong Kong Hong Kong

Radial Basis Function (RBF) has been used in surface reconstruction methods to interpolate or approximate scattered data points, which involves solving a large linear system. The linear systems for determining coefficients of RBF may be ill-conditioned when processing a large point set, which leads to unstable numerical results. We introduce a quasi-interpolation framework based on compactly supported RBF to solve this problem. In this framework, implicit surfaces can be reconstructed without solving a large linear system. With the help of an adaptive space partitioning technique, our approach is robust and can successfully reconstruct surfaces on non-uniform and noisy point sets. Moreover, as the computation of quasi-interpolation is localized, it can be easily parallelized on multi-core CPUs. © 2012 Elsevier B.V.

关键词： Linear systems

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Adaptive neural network control of robot with passive last joint 1

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5th International Conference on Intelligent Robotics and Applications, ICIRA 2012

作者： Yang, Chenguang Li, Zhijun Li, Jing Smith, Alex School of Computing and Mathematics Plymouth University United Kingdom Department of Automation Shanghai Jiao Tong University Shanghai China Department of Mathematics Xidian University China College of Automation Science and Engineering South China University of Technology China

ISBN: (数字)9783642335037

ISBN: (纸本)9783642335020

Adaptive control of a robot manipulator with a passive joint (which has neither an actuator nor a holding brake) is investigated. With the aim to shape the controlled manipulator dynamics to be of minimized motion tracking errors and joint accelerations, we employ a linear quadratic regulator (LQR) optimization technique to obtain an optimal reference model. Adaptive neural network (NN) control has been developed to ensure the reference model can be matched in finite time, in the presence of various uncertainties. © Springer-Verlag Berlin Heidelberg 2012.

关键词： Neural networks

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Multi-agent swarm based localization of hazardous events

Multi-agent swarm based localization of hazardous events

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作者： Varga, Maja Piskovic, Zvonimir Bogdan, Stjepan Li, Zhijun Lausanne Switzerland Faculty of Electrical Engineering and Computing University of Zagreb Unska 3 10000 Zagreb Croatia Department of Automation Shanghai Jiao Tong University China

Swarm robotic concept has become a topic of extensive research in hazardous environments where fault tolerant, robust and energy-efficient approach is needed. In this paper we present behavioural based algorithm for outdoor environment exploration. This work is inspired by ant colony behaviour models. Our goal is to control agent's motion using simple rules and not to rely on wireless communication. Agents perform random walk combined with simple heuristic pheromone based rules which prevent frequent visits of previously visited locations. To determine heuristic parameters which maximize area coverage, we optimize parameters by simulating swarm behaviour in Matlab. Furthermore, we take into account the agent limitations, such as battery lifetime, and we model a probability success of a mission with respect to that parameter.

关键词： Multi agent systems

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CEDAR: An Optimal and Distributed Strategy for Packet Recovery in Wireless Networks

CEDAR: An Optimal and Distributed Strategy for Packet Recove...

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IEEE INFOCOM

作者： Chenxi Qiu Haiying Shen Sohraab Soltani Karan Sapra Hao Jiang Jason Hallstrom Department of Electrical and Computer Engineering Clemson University Clemson SC 29634 USA Intelligent Automation Inc. Rockville MD 20855 USA School of Computing Clemson University Clemson SC 29634 USA

ISBN: (纸本)9781467359443

Underlying link-layer protocols of wireless networks use the conventional "store and forward" design paradigm cannot provide highly sustainable reliability and stability in wireless communication, which introduce significant barriers and setbacks in scalability and deployments of wireless networks. In this paper, we propose a Code Embedded Distributed Adaptive and Reliable (CEDAR) link-layer framework that targets low latency and high throughput. CEDAR is the first comprehensive theoretical framework for analyzing and designing distributed and adaptive error recovery for wireless networks. It employs a theoretically-sound framework for embedding channel codes in each packet and performs the error correcting process in selected intermediate nodes in packet's route. To identify the intermediate nodes for the en/decoding for minimizing average packet latency, we mathematically analyze the average packet delay, using Finite State Markovian Channel model and priority queuing model, and then formalize the problem as a non-linear integer programming problem. Also, we propose a scalable and distributed scheme to solve this problem. The results from real-world testbed "NESTbed" and simulation with Matlab prove that CEDAR is superior to the schemes using hop-by-hop decoding and destination-decoding not only in packet delay but also in throughput. In addition, the simulation results show that CEDAR can achieve the optimal performance in most cases.

关键词： Wireless networks Packet intermediate node Scalability Cedrus Channel coding system recovery Distribute Throughput CARRIER SYSTEM optimum performance MATLAB

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Laboratory education experiences in the development of advanced digital TV services

Laboratory education experiences in the development of advan...

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2012 IEEE Global engineering Education Conference, EDUCON 2012

作者： Andreas, Papadakis Marios-Georgios, Panaousis Costas, Alafodimos Athens Greece Faculty of Science Engineering and Computing Kingston University London United Kingdom Department of Automation Technological Education Institute of Piraeus TEI Piraeus Egaleo-Athens Greece

In this work we have composed an innovative environment for the development of interactive TV applications. This has been evaluated in the context of laboratory exercises by students. We present the environment as well as the results gained when the students changed their role from passive TV viewers to application developers. © 2012 IEEE.

关键词： Digital television

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