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Robust Observer Design for Takagi-Sugeno Fuzzy Systems with Mixed Neutral and Discrete Delays and Unknown Inputs

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  • Hamid Reza Karimi
  • Mohammed Chadli

Abstract

A robust observer design is proposed for Takagi-Sugeno fuzzy neutral models with unknown inputs. The model consists of a mixed neutral and discrete delay, and the disturbances are imposed on both state and output signals. Delay-dependent sufficient conditions for the design of an unknown input T-S observer with time delays are given in terms of linear matrix inequalities. Some relaxations are introduced by using intermediate variables. A numerical example is given to illustrate the effectiveness of the given results.

Suggested Citation

  • Hamid Reza Karimi & Mohammed Chadli, 2012. "Robust Observer Design for Takagi-Sugeno Fuzzy Systems with Mixed Neutral and Discrete Delays and Unknown Inputs," Mathematical Problems in Engineering, Hindawi, vol. 2012, pages 1-13, December.
    • Handle: RePEc:hin:jnlmpe:635709
    DOI: 10.1155/2012/635709
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