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New results in disturbance decoupled fault reconstruction in linear uncertain systems using two sliding mode observers in cascade

Ng, Kok, Tan, Chee Pin, Man, Zhihong and Akmeliawati, Rini (2009) New results in disturbance decoupled fault reconstruction in linear uncertain systems using two sliding mode observers in cascade. International Journal of Control, Automation and Systems, 8 (3). pp. 506-518. [Journal article]

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URL: http://dx.doi.org/10.1007/s12555-010-0303-8

DOI: 10.1007/s12555-010-0303-8

Abstract

This paper presents a disturbance decoupled fault reconstruction (DDFR) scheme using two sliding mode observers in cascade. Measurable signals from the first observer are found to be the output of a fictitious system that is driven by the fault and disturbances. Then the signals are fed into a second observer which will reconstruct the fault. Sufficient conditions which guarantee DDFR are investigated and presented in terms of the original system matrices, and they are found to be less conservative than if only one single observer is used; therefore DDFR can be achieved for a wider class of systems using two sliding mode observers. A simulation example validates the claims made in this paper.

Item Type:Journal article
Keywords:Disturbance decoupling, fault reconstruction, robustness, sliding mode observer
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
ID Code:38281
Deposited By: Dr Mark Kok Ng
Deposited On:26 Jul 2017 15:55
Last Modified:20 Mar 2018 10:36

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