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

Kok Ng, Chee Pin Tan, Zhihong Man, Rini Akmeliawati

Research output: Contribution to journalArticle

7 Citations (Scopus)
6 Downloads (Pure)

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.
Original languageEnglish
Pages (from-to)506-518
JournalInternational Journal of Control, Automation and Systems
Volume8
Issue number3
DOIs
Publication statusAccepted/In press - 4 Dec 2009

Keywords

  • Disturbance decoupling
  • fault reconstruction
  • robustness
  • sliding mode observer

Fingerprint Dive into the research topics of 'New results in disturbance decoupled fault reconstruction in linear uncertain systems using two sliding mode observers in cascade'. Together they form a unique fingerprint.

  • Cite this