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

Ng, Kok Yew and Tan, Chee Pin and Man, Zhihong and Akmeliawati, Rini (2010) 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. ISSN 1598-6446

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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:	Article (Journal)
Additional Information:	5806/16242
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ212 Control engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering
Depositing User:	Prof. Dr. Rini Akmeliawati
Date Deposited:	01 Feb 2012 09:47
Last Modified:	01 Feb 2012 09:47
URI:	http://irep.iium.edu.my/id/eprint/16242

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