Fast fault estimation and accommodation for dynamical systems

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Zhang, K, 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


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.

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Item type Article
Official URL
Subjects Historical > SEO Classification > 970109 Expanding Knowledge in Engineering
Historical > Faculty/School/Research Centre/Department > Institute for Logistics and Supply Chain Management (ILSCM)
Historical > FOR Classification > 0199 Other Mathematical Sciences Information Systems
Keywords ResPubID17722, adaptive control, closed loop systems, fault diagnosis, fault tolerance, linear systems, nonlinear control systems, observers, stability
Citations in Scopus 217 - View on Scopus
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