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Fast fault estimation and accommodation for dynamical systems

Zhang, K and Jiang, B and Shi, Peng (2009) Fast fault estimation and accommodation for dynamical systems. IET Control Theory and Applications, 3 (2). pp. 189-199. ISSN 1751-8644

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Abstract

The problem of fast active fault-tolerant control is studied using adaptive fault diagnosis observer (AFDO). Existence conditions for linear time-invariant system are first introduced to verify whether or not the adaptive observer for fault diagnosis exists. Then a novel fast adaptive fault estimation (FAFE) algorithm is proposed to enhance the performance of fault estimation. Using the on-line obtained fault information, the observer-based fault tolerant controller based on the separation property is designed to compensate for the loss of actuator effectiveness by stabilising the closed-loop system. Furthermore, an extension to a class of nonlinear systems is extensively investigated. Finally, simulation results are presented to illustrate the efficiency of the proposed techniques.

Item Type: Article
Uncontrolled Keywords: ResPubID17722, adaptive control, closed loop systems, fault diagnosis, fault tolerance, linear systems, nonlinear control systems, observers, stability
Subjects: SEO Classification > 970109 Expanding Knowledge in Engineering
Faculty/School/Research Centre/Department > Institute for Logistics and Supply Chain Management (ILSCM)
FOR Classification > 0199 Other Mathematical Sciences Information Systems
Depositing User: VUIR
Date Deposited: 14 Jun 2011 01:41
Last Modified: 27 Apr 2012 01:25
URI: http://vuir.vu.edu.au/id/eprint/4727
DOI: 10.1049/iet-cta:20070283
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Citations in Scopus: 66 - View on Scopus

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