Robust Observer Design with Application to Fault Detection

Viswanadham, N and Minto, Dean K (2009) Robust Observer Design with Application to Fault Detection. In: 1988 American Control Conference, 15-17 June 1988, Atlanta, Ga, USA.

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Abstract

A new scheme for robust estimation of the partial state of linear time-invariant multivariable systems is presented, and it is shown how this may be used for the detection of sensor faults in such systems. We consider an observer to be robust if it generates a faithful estimate of the plant state in the face of modelling uncertainty or plant perturbations. Using the Stable Factorization approach we formulate the problem of optimal robust observer design by minimizing an appropriate norm on the estimation error. A logical candidate is the 2-norm, corresponding to an H�¿ optimization problem, for which solutions are readily available. In the special case of a stable plant, the optimal fault diagnosis scheme reduces to an internal model control architecture.

Item Type:	Conference Paper
Publisher:	IEEE
Additional Information:	Copyright 1988 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre:	Division of Electrical Sciences > Computer Science & Automation
Date Deposited:	26 Dec 2011 09:06
Last Modified:	26 Dec 2011 09:06
URI:	http://eprints.iisc.ac.in/id/eprint/42832

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