Sliding mode observer for estimating states and faults of linear time-delay systems with outputs subject to delays

Cuong M. Nguyen, Chee Pin Tan, Hieu Trinh

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31 Citations (Scopus)

Abstract

In this paper, we study the problem of estimating states and faults for a class of linear time-delay systems using sliding mode observers. Both the states and outputs are subject to constant delays. This is a challenging problem and has not yet been resolved in the literature. By appropriately using a system transformation and the H filtering method, we propose a novel sliding mode observer scheme which can guarantee H asymptotic stability of the state and fault estimation errors. A numerical example is provided to illustrate the effectiveness of the new result.

Original languageEnglish
Article number109274
Number of pages5
JournalAutomatica
Volume124
DOIs
Publication statusPublished - Feb 2021

Keywords

  • Fault estimation
  • H filtering
  • Output delay
  • Sliding mode observer
  • Time-delay system

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