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Type: Journal article
Title: Fast fault estimation and accommodation for dynamical systems
Author: Zhang, K.
Jiang, B.
Shi, P.
Citation: IET Control Theory and Applications, 2009; 3(2):189-199
Publisher: The Institution of Engineering and Technology
Issue Date: 2009
ISSN: 1751-8644
Statement of
K. Zhang, B. Jiang, P. Shi
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.
Rights: © The Institution of Engineering and Technology 2009
RMID: 0020128061
DOI: 10.1049/iet-cta:20070283
Appears in Collections:Electrical and Electronic Engineering publications

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