New results in robust functional state estimation using two sliding mode observers in cascade

Chew Yee Kee, Chee Pin Tan, Kok Ng, Hieu Trinh

Research output: Contribution to journalArticle

Abstract

This paper presents a functional observer scheme using two sliding mode observers in cascade. A coordinate transformation is performed on the system such that existing sliding mode observer theory can be directly applied to achieve functional state estimation. The necessary and sufficient existence conditions for the scheme (in terms of the original system matrices) are also investigated, and they are found to be less stringent than earlier work on functional state estimation using one sliding mode observer; this could have benefits in terms of cost and simplicity. A numerical example verifies the effectiveness of the scheme.
Original languageEnglish
Pages (from-to)2079-2097
JournalInternational Journal of Robust and Nonlinear Control
Volume24
Issue number15
Early online date3 Mar 2013
DOIs
Publication statusE-pub ahead of print - 3 Mar 2013

Keywords

  • functional state estimation
  • sliding mode observer

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