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

  • Kok Yew Ng
  • Chee Pin Tan
  • Zhihong Man
  • Rini Akmeliawati
Regular Papers Control Theory

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.

Keywords

Disturbance decoupling fault reconstruction robustness sliding mode observer 

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Copyright information

© Institute of Control, Robotics and Systems and The Korean Institute of Electrical Engineers and Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Kok Yew Ng
    • 1
  • Chee Pin Tan
    • 1
  • Zhihong Man
    • 2
  • Rini Akmeliawati
    • 3
  1. 1.School of EngineeringMonash UniversityJalan Lagoon SelatanMalaysia
  2. 2.Robotics and Mechatronics EngineeringSwinburne University of TechnologyHawthornAustralia
  3. 3.Kuliyyah of EngineeringInternational Islamic UniversityJalan GombakKuala Lumpur, Malaysia

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