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EMOTIONAL LEARNING TO control LARGE-SCALE SYSTEMS

IFAC Proceedings Volumes 2005年第1期38卷 293-298页

作者： Reyhaneh Bakhtiari Batool Labibi Control and Intelligent Processing Centre of Excellence Electrical and Computer Engineering Department University of Tehran Department of Electrical Engineering K.N. Toosi University of Technology Tehran Iran

In this paper, with a new look at emotional controller and modifying its structure; a novel approach to hierarchical control of large-scale systems is introduced. Design of controller is founded on emotional learning and the control system consists of neuro-fuzzy controller, whose weights are updated according to emotional signals. This signal is produced in a block called critic, whose job is to evaluate system behaviour. Simulation results demonstrate that the proposed learning scheme, which is applied to a nonlinear three-tank system, provides better control reliability and robustness than classic robust schemes.

关键词： Neuro-Fuzzy controller Emotional Learning Intelligent System Large-Scale System Hierarchical control Multi-agent Systems

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Set membership estimation of parameters and variables in dynamic networks by recursive algorithms with moving measurement window

Set membership estimation of parameters and variables in dyn...

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作者： Duzinkiewicz, Kazimierz Brdys, Mietek A. Department of Automatic Control Gdansk University of Technology G.Narutowicza 11/12 80 9 52 Gdansk Poland Department of Electronic Electrical and Computer Engineering School of Engineering University of Birmingham Birmingham B15 2TT United Kingdom

ISBN: (纸本)008045108X

The paper considers a set-membership joint estimation of variables and parameters in complex dynamic networks based on parametric uncertain models and limited hard measurements. The recursive estimation algorithm with moving measurement window is derived that is suitable for on line network monitoring. The window allows stabilising the classic recursive estimation algorithm and significantly improves the estimate tightness. The estimator is validated on a case study water distribution network. Tight set estimates of unmeasured pipe flows, nodal heads and pipe resistances are obtained. Copyright © 2005 IFAC.

关键词： Uncertainty analysis

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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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BIBE 2005: 5th IEEE Symposium on Bioinformatics and Bioengineering

作者： Lin, Chun Yuan Lin, Ken-Li Huang, Chuen-Der Chang, Hsiu-Ming Yang, Chiao Yun Lin, Chin-Teng Tang, Chuan Yi Hsu, D. Frank Institute of Molecular and Cellular Biology National Tsing Hua University Hsinchu Taiwan Brain Research Center National Tsing Hua University Hsinchu Taiwan Department of Computer Science National Tsing Hua University Hsinchu Taiwan 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 Department of Computer and Information Science Fordham University New York NY 10023 United States

ISBN: (纸本)0769524761

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. © 2005 IEEE.

关键词： Proteins

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Lower - Level controller for hierarchical control of dissolved oxygen concentration in activated sludge processes

Lower - Level controller for hierarchical control of dissolv...

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作者： Piotrowski, R. Brdys, M.A. Department of Automatic Control Gdansk University of Technology ul. G. Narutowicza 11/12 80 952 Gdansk Poland Department of Electronic Electrical and Computer Engineering University of Birmingham Birmingham B15 2TT United Kingdom

ISBN: (纸本)008045108X

The paper addresses control design for an aeration system within a hierarchical structure for an integrated control of dissolved oxygen in the activated sludge processes. in the paper the hybrid predictive controller for the lower control level is developed and its performance is investigated based on real data records. Copyright © 2005 IFAC.

关键词： Dynamical systems

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Analog baseband filtering realized using switched capacitor finite impulse response filter

Analog baseband filtering realized using switched capacitor ...

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International Symposium on VLSI Design, Automation and Test

作者： A. Dabrowski R. Dlugosz P. Pawtowski K. Iniewski V. Gaudet Institute of Control and System Engineering Poznan University of Technology Poznan Poland Department of Electrical and Computer Engineering University of Alberta Edmonton Alberta Canada

Design of analog baseband filtering topology for application in multiple standard wireless systems has been evaluated. Two versions of GSM channel filter implemented as finite impulse response (FIR) discrete time filter in switched capacitor (SC) technique are presented. The GSM baseband channel filters have been realized in CMOS 0.8/spl mu/m and subsequently re-designed in 0.35/spl mu/m process for GSM/WCDMA application.

关键词： Finite impulse response filter Baseband Filtering Capacitors Operational amplifiers Topology GSM Digital filters Multiaccess communication Design engineering

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Hierarchical model predictive control of integrated quality and quantity in drinking water distribution systems

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Urban Water Journal 2005年第2期2卷 125-137页

作者： Duzinkiewicz, K. Brdys, M. A. Chang, T. Department of Control Engineering Faculty of Electrical Engineering and Automatic Control Gdánsk University of Technology. G. Narutowicza 11/12 Gdánsk 80-952 Poland Department of Electronic Electrical and Computer Engineering School of Engineering The University of Birmingham Birmingham B15 2TT UK

An integrated approach to control of quantity and quality in water supply and distribution systems is proposed. The integrated control consists in optimising the operational cost, meeting a demand on water of desired quality and maintaining the system constraints. This constrained optimising control problem is complex due to nonlinearities, large dimension, output constraints, mixed-integer structure of the variables involved, at least two time scales in the system dynamics and an uncertainty. A sub-optimal two-level hierarchical control structure is proposed that allows incorporating the desired controller functions and yet making the synthesis of these functions possible. The algorithms for implementing the functionalities are proposed and discussed. Detail design of the lower level controller is presented and investigated. The controller performance is validated by simulation. [ABSTRACT FROM AUTHOR]

关键词： Bounding method Chlorine residuals Constraints Predictive control Transport delay Uncertain dynamic systems Water quality control

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Adaptive estimation and rejection of unknown disturbances through measurement feedback for a class of nonminimum phase nonlinear MIMO systems

Adaptive estimation and rejection of unknown disturbances th...

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International Conference on control and Automation (ICCA)

作者： Weiyao Lan B.M. Chen Zhengtao Ding Department of Electrical and Computer Engineering National University of Singapore Singapore Control Systems Centre School of Electrical and Electronic Engineering University of Manchester Institute of Science and Technology Manchester UK

This paper developed an adaptive estimation method to estimate unknown disturbances in a class of nonminimum phase nonlinear MIMO systems. The unknown disturbances are generated by an unknown linear exosystem. The frequencies, phases and amplitudes of the disturbances are unknown, the only available information of the disturbances is the number of distinctive frequencies. The system considered in this paper is a class of MIMO nonlinear systems in the output feedback form, the system can be nonminimum phase. The proposed estimation algorithm provides exponentially convergent estimates of system states, unknown disturbances in the system and frequencies of the disturbances characterized by the eigenvalues of the exosystem. Moreover, the disturbance rejection control law is constructed by combining the stabilization controller designed without considering the disturbances and the estimates of the disturbances. The control law compensates the unknown disturbances completely while maintains the stability of the whole closed-loop system.

关键词： Adaptive estimation Phase measurement MIMO Frequency estimation State estimation Phase estimation Nonlinear systems Output feedback Eigenvalues and eigenfunctions control systems

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A new identification algorithm for multi-input ARX systems

A new identification algorithm for multi-input ARX systems

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IEEE International Conference on Mechatronics and Automation

作者： Feng Ding Yang Shi Tongwen Chen Department of Test and Control Engineering Nanchang Institute of Aeronautical Technology Nanchang China Department of Electrical and Computer Engineering University of Alberta Edmonton AB Canada

For multi-input ARX systems, we present a multi-innovation least squares (LS) identification algorithm by extending the innovation modification technique. Since the proposed algorithm uses p input-output data at each iteration (p being an innovation length), it improves the accuracy of the parameter estimation. Moreover, we introduce a varying iterative interval scheme in the standard LS algorithm and propose a varying iterative interval multi-innovation LS algorithm, which can deal with missing data cases. Finally, the simulation results show that the proposed algorithms have an advantage over the LS algorithm.

关键词： Iterative algorithms Technological innovation Parameter estimation Least squares approximation Least squares methods Polynomials System testing control engineering MIMO Delay

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Development of a Hybrid Element by using Sponge Core Soft Rubber Actuator

Development of a Hybrid Element by using Sponge Core Soft Ru...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： Y. Hayakawa S.R. Pandian Department of Electrical and Control Engineering Nara National College of Technology Yamato-Koriyama Nara Japan Department of Electrical Engineering and Computer Science Tulane University New Orleans LA USA

In this paper, we investigate a new type of hybrid element to realize a human-friendly support device. The element is a flexible actuator (called Sponge Core Soft Rubber Actuator) and its structure is a soft mechanism in which a sponge rubber is covered with silicone rubber. In addition to its actuation capability, the element can estimate external forces by making use of the relation between inner pressure and external force. Therefore, the element can be used as a hybrid element that has both actuator and force sensor functions. This paper discusses the hybrid element design, actuator characteristics, and force control and sensing abilities of the element. Experimental results are presented to illustrate the practical effectiveness of the proposed hybrid element.

关键词： Rubber Senior citizens Pneumatic actuators Humans Bones Pneumatic systems Pressure control Force sensors Force control Compressors

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Sub-Nyquist Nonuniform Sampling and Perfect Reconstruction of Speech Signals

Sub-Nyquist Nonuniform Sampling and Perfect Reconstruction o...

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IEEE Region 10 International Conference TENCON

作者： Heyoung Lee Zeungnam Bien Department of Control and Instrumentation Engineering Seoul National University of Technology Seoul South Korea Department of Electrical Engineering and Computer Science KAIST Taejon South Korea

The discrete-time speech signals obtained by Nyquist uniform sampling (NUS) have two kinds of redundant samples. One originates from the time-varying instantaneous bandwidth. The other originates from non-compactness of spectral support (SS) in time-frequency domain (TFD). In this paper, the sub- Nyquist nonuniform sampling (SNNS) and the perfect reconstruction (PR) formula are proposed for removing the redundant samples due to the time-varying instantaneous bandwidth (IB) in speech signals. In the proposed method, the instantaneous sampling frequency (ISF) varies, depending on the least upper boundary of spectral support of a speech signal in TFD. The definition of the IB, which determines the ISF and is used for generating the set of samples that represent continuous- time signals perfectly, is given.

关键词： Nonuniform sampling Sampling methods Signal sampling Signal generators Speech analysis Bandwidth Signal processing Time frequency analysis Data mining Frequency domain analysis

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