Delay-dependent non-fragile H∞ filtering for uncertain fuzzy systems based on switching fuzzy model and piecewise Lyapunov function

  • Authors:
  • Zhi-Le Xia;Jun-Min Li;Jiang-Rong Li

  • Affiliations:
  • School of Science, Xidian University, Xi'an, PRC 710071 and School of Mathematics and Information Engineering, Taizhou University, Taizhou, PRC 317000;School of Science, Xidian University, Xi'an, PRC 710071;School of Science, Xidian University, Xi'an, PRC 710071 and College of Mathematics and Computer Science, Yanan University, Yanan, PRC 716000

  • Venue:
  • International Journal of Automation and Computing
  • Year:
  • 2010

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Abstract

This paper is concerned with the non-fragile H∞ filter design problem for uncertain discrete-time Takagi-Sugeno (T-S) fuzzy systems with time delay. To begin with, the T-S fuzzy system is transformed to an equivalent switching fuzzy system. Then, based on the piecewise Lyapunov function and matrix decoupling technique, a new delay-dependent non-fragile H∞ filtering method is proposed for the switching fuzzy system. The proposed condition is less conservative than the previous results. Since only a set of LMIs is involved, the filter parameters can be solved directly. Finally, a design example is provided to illustrate the validity of the proposed method.