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Sliding Mode control Design via Reduced Order Model Approach

International Journal of Automation and computing 2007年第4期4卷 329-334页

作者： B.Bandyopadhyay Alemayehu G/Egziabher Abera S.Janardhanan Victor Sreeram Interdisciplinary Programme in Systems and Control Engineering Indian Institute of Technology BombayMumbai 400076India Department of Electrical Engineering Indian Institute of Technology DelhiNew Delhi 110016India School of Electrical Electronicand Computer EngineeringThe University of Western AustraliaWestern Australia 6009Australia

This paper presents a design of continuous-time sliding mode control for the higher order systems via reduced order model. It is shown that a continuous-time sliding mode control designed for the reduced order model gives similar performance for thc higher order system. The method is illustrated by numerical examples. The paper also introduces a technique for design of a sliding surface such that the system satisfies a cost-optimality condition when on the sliding surface.

关键词： Sliding mode control order reduction reduced order model higher order system optimal control.

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Multirate output feedback based digital redesign of sliding mode control algorithms

Multirate output feedback based digital redesign of sliding ...

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2006 International Workshop on Variable Structure systems, VSS'06

作者： Janardhanan, S. Bandyopadhyay, B. Abera, Alemayehu G.E. Interdisciplinary Programme in Systems and Control Engineering Indian Institute of Technology Bombay Mumbai - 400 076 India

ISBN: (纸本)1424402085

Though continuous-time sliding mode control has a variety of desirable properties, its discrete-time counterpart does not guarantee the same performance. This is due to the fact that most of the discrete-time sliding mode control algorithms are based on reaching laws that are only approximations of continuous-time reaching laws and thus may not give a performance close to continuous-time sliding mode control. This paper presents a method of multirate output feedback based discrete-time control design which guarantees the closest possible performance for a pre-designed continuous-time sliding mode control algorithm. © 2006 IEEE.

关键词： Sliding mode control

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Multirate Output Feedback based Digital Redesign of Sliding Mode control Algorithms

Multirate Output Feedback based Digital Redesign of Sliding ...

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International Workshop on Variable Structure systems, VSS

作者： S. Janardhanan B. Bandyopadhyay A.G. Abera Interdisciplinary Programme in Systems and Control Engineering Indian Institute of Technology Bombay India

关键词： Output feedback Sliding mode control control systems Sampling methods Robust control Digital control Signal design control design State-space methods Uncertain systems

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Digital Redesign of Sliding Mode control Algorithms Using Saturation Function: State and Multirate Output Feedback Approach

Digital Redesign of Sliding Mode Control Algorithms Using Sa...

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IEEE Conference on Decision and control

作者： Alemayehu G/E Abera B. Bandyopadhyay S. Janardhanan Interdisciplinary Programme Systems and Control Engineering Indian Institute of Technology Bombay India

ISBN: (纸本)1424401704;9781424401703

Though continuous-time sliding mode control has a variety of desirable properties, its discrete-time counterpart does not guarantee the same performance. This is due to the fact that most of the discrete-time sliding mode control algorithms are based on reaching laws that are only approximations of continuous-time reaching laws and thus may not give a performance close to continuous-time sliding mode control. This paper presents a method for digital redesign of sliding mode control using saturation function based on state feedback. The method is extended to multirate output feedback case. It is shown that performance of the proposed controller is close to the performance of a pre-designed continuous-time sliding mode control algorithm. The method is illustrated by a numerical example

关键词： Sliding mode control Output feedback control systems State feedback Digital control Sampling methods Signal design USA Councils State-space methods Closed loop systems

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FAULT DETECTION USING CORRESPONDENCE ANALYSIS: APPLICATION TO TENNESSEE EASTMAN CHALLENGE PROBLEM

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IFAC Proceedings Volumes 2006年第2期39卷 705-710页

作者： K.P. Detroja R.D. Gudi S.C. Patwardhan Interdisciplinary Programme on Systems and Control Engineering Department of Chemical Engineering Indian Institute of Technology Bombay Powai Mumbai – 400076 India

This paper presents an approach based on the use of correspondence analysis (CA) for the task of fault detection and diagnosis. Unlike other tools (PCA / DPCA) that are used for this latter task, CA is shown to use a different metric to represent the information content in the data matrix X . Decomposition of the information represented in the metric is shown to yield superior performance from the viewpoints of data compression, discrimination and classification as well as early detection of faults. We demonstrate these performance improvements over PCA and DPCA on the Tennessee Eastman problem, which is a representative benchmark problem used in the literature. CA is shown to yield vastly superior performance for the monitoring of the TE problem, when compared with PCA and DPCA.

关键词： Correspondence Analysis (CA) Principal Components Analysis (PCA) Dynamic PCA (DPCA) Fault Detection (FD)

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DIAGNOSIS OF FAULTS WITH VARYING INTENSITIES USING POSSIBILISTIC CLUSTERING AND FAULT LINES

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IFAC Proceedings Volumes 2006年第2期39卷 905-910页

In this paper, a new approach for fault detection and isolation that is based on the possibilistic clustering algorithm is proposed. Fault detection and isolation (FDI) is shown here to be a pattern classification problem, which can be solved using clustering and classification techniques. The possibilistic clustering approach was proposed to address some of the short comings of the fuzzy c-means (FCM) algorithm. The probabilistic constraint imposed on the membership value in the FCM algorithm is relaxed in the possibilistic clustering algorithm. Because of this relaxation, the possibilistic approach is shown in this paper to give more consistent results in the context of the FDI tasks. The proposed approach addresses the issue of correctly isolating a fault that may occur with varying intensities. The concept of fault lines is introduced, which in conjunction with possibilistic clustering has been effectively used for FDI. Fault signatures that change as a function of the fault intensities are represented as fault lines, which are shown to be useful to classify faults that can manifest with different intensities. The proposed approach has been validated here through simulations involving a co-polymerization reactor simulation.

关键词： Possibilistic clustering Fuzzy c-means clustering Gustafson-Kessel algorithm Fault Detection (FDD)

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Sliding Mode control Design via Reduced Order Model Approach

Sliding Mode Control Design via Reduced Order Model Approach

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IEEE International Conference on Industrial Technology (ICIT)

作者： B. Bandyopadhyay Alemayehu G/Egziabher Abera S. Janardhanan Interdisciplinary Programme in Systems and Control Engineering Indian Institute of Technology Bombay Mumbai INDIA Division of Chemical and Biomolecular Engineering Nanyang Technological University Singapore Singapore

The paper presents the design of sliding mode control for the higher order system via reduced order model. It has been shown that a sliding mode control designed for the reduced order model gives similar performance f... 详细信息

关键词： Sliding mode control Reduced order systems control systems Sampling methods control design State-space methods Robust control Uncertain systems Frequency Proportional control

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Design and implementation of a novel technique of human speech recognition for a Robot

Design and implementation of a novel technique of human spee...

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SICE Annual Conference 2005

作者： Manjunath, T.C. IEEE SPIE IOP Interdisciplinary Programme in Systems and Control Engineering Indian Institute of Technology Bombay Powai Mumbai-400076 Maharashtra India

The primary purpose of this research work is to develop a speech recognition system, which will be capable of recognizing and interpreting an individual's voice. This will thus obviate the use of keyboards and other such input devices to output the data. The scope of this work is limited to the recognition of digits. Matlab, a versatile software tool is made use of for the processing of the signals. This processing involves filtering, shaping, correlating the speech signal which will enable the computer to interpret the commands given by the user. The signature of every spoken digit is unique from which we can derive the parameters which differ from digit to digit. These parameters serve as a concrete base for the implementation of a speaker independent voice recognition system. Using such parameters simultaneously and using probability concept the digits are sorted and arranged in the descending order of their probability. The digit with the highest probability is displayed. © 2005 SICE.

关键词： Speech recognition

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Design and implementation of remote equipment control using data acquisition and communication systems

Design and implementation of remote equipment control using ...

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SICE Annual Conference 2005

作者： Manjunath, T.C. IEEE/SPIE/IOP Interdisciplinary Programme in Systems and Control Engineering ACRE Building Indian Institute of Technology Bombay Mumbai-400076 Maharashtra India

The main objective of this work is to design, fabricate and implement remote equipment control system using communication system networks using transmitters and receivers. A data acquisition system is designed using microcontrollers in order to achieve full automation and the remote control is designed to enable the user to control the device, say a robot or any variable from a distance. © 2005 SICE.

关键词： Remote control

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Implementation of a microcontroller based temperature scanning control system

Implementation of a microcontroller based temperature scanni...

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SICE Annual Conference 2005

作者： Manjunath, T.C. IEEE SPIE IOP Interdisciplinary Programme in Systems and Control Engineering ACRE Building Indian Institute of Technology Bombay Powai Mumbai-400076 Maharashtra India

Most industrial processes function only within a specified temperature range. It is imperative in most process and control industries, that the temperature of the power electronic devices be maintained within its operating range for optimum performance. It is therefore important to know the temperature of various devices operating in industrial applications. This paper presents the design and implementation of a Microcontroller Based Temperature Scanner which is a device that can be used to measure temperature and display the temperature in centigrade directly on a seven segment display. It has the ability to measure temperature on eight different channels, provides for automatic scanning for all channels or allows the user the option to select the channel which he wants to scan. The designed device is used for measuring the temperature at different points of a system. The device, with the help of the RS-232 interface to a personal computer, can be used for data logging. It is also to be used along with support control circuitry to provide controller action. © 2005 SICE.

关键词： control systems

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