Improvement on observer-based H control for T-S fuzzy systems

Chong Lin, Qing Guo Wang, Tong Heng Lee

Research output: Contribution to journalArticlepeer-review

115 Citations (Scopus)

Abstract

This paper provides an improved result over that in Liu and Zhang [2003, New approaches to H∞ controller designs based on fuzzy observers for T-S fuzzy systems via LMI. Automatica, 39, 1571-1582] for the problem of observer-based H∞ control for nonlinear systems in Takagi-Sugeno (T-S) fuzzy model. It contributes in three aspects: (i) The present result is less conservative than that in Liu and Zhang [2003, New approaches to H∞ controller designs based on fuzzy observers for T-S fuzzy systems via LMI. Automatica, 39, 1571-1582]; (ii) The present strict LMI method is a single step approach which overcomes the drawback of a two-step approach in Liu and Zhang [2003, New approaches to H∞ controller designs based on fuzzy observers for T-S fuzzy systems via LMI. Automatica, 39, 1571-1582]; (iii) The matrix dimensions are largely reduced compared with the corresponding ones in Liu and Zhang [2003, New approaches to H∞ controller designs based on fuzzy observers for T-S fuzzy systems via LMI. Automatica, 39, 1571-1582].

Original languageEnglish
Pages (from-to)1651-1656
Number of pages6
JournalAutomatica
Volume41
Issue number9
DOIs
Publication statusPublished - Sept 2005
Externally publishedYes

Keywords

  • H control
  • Observer
  • T-S fuzzy systems

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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