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

Kok Yew Ng, Chee Pin Tan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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. It is found that this scheme will enable DDFR to be achieved for a wider class of systems compared to previous work of using one single observer. A simulation example validates the claims made in this paper.

Original languageEnglish
Title of host publicationSAFEPROCESS'09 - 7th IFAC International Symposium on Fault Detection, Supervision and Safety of Technical Systems, Proceedings
Pages780-785
Number of pages6
DOIs
Publication statusPublished - 1 Dec 2009
Event7th IFAC International Symposium on Fault Detection, Supervision and Safety of Technical Systems, SAFEPROCESS'09 - Barcelona, Spain
Duration: 30 Jun 20093 Jul 2009

Conference

Conference7th IFAC International Symposium on Fault Detection, Supervision and Safety of Technical Systems, SAFEPROCESS'09
CountrySpain
CityBarcelona
Period30/06/093/07/09

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Keywords

  • Disturbance rejection
  • Fault diagnosis
  • Sliding mode observers

Cite this

Ng, K. Y., & Tan, C. P. (2009). New results in disturbance decoupled fault reconstruction in linear uncertain systems using two sliding mode observers in cascade. In SAFEPROCESS'09 - 7th IFAC International Symposium on Fault Detection, Supervision and Safety of Technical Systems, Proceedings (pp. 780-785) https://doi.org/10.3182/20090630-4-ES-2003.0298