Robust H∞ disturbance attenuation for a class of uncertain discrete-time fuzzy systems

  • Authors:
  • Yong-Yan Cao;P. M. Frank

  • Affiliations:
  • Dept. of Electr. Eng., Duisburg Univ.;-

  • Venue:
  • IEEE Transactions on Fuzzy Systems
  • Year:
  • 2000

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Abstract

The paper is concerned with robust stabilization and H∞ control of a class of uncertain discrete-time fuzzy systems. The class of uncertain systems is described by state space Takagi-Sugeno (TS) fuzzy models with linear nominal parts and norm-bounded parameter uncertainties in the state and output equations. First, a sufficient condition on robust stability of the fuzzy models is proposed. Then, H ∞-disturbance attenuation performance of the fuzzy models is analyzed. Some sufficient conditions are derived on robust H ∞-disturbance attenuation in which both robust stability and a prescribed H∞ performance are required to be achieved, irrespective of the uncertainties. A numerical example shows the use of the results on the stabilization and H∞-disturbance attenuation of a class of discrete-time nonlinear systems via fuzzy switch