Direct adaptive fuzzy control for a class of nonlinear discrete-time systems with time-varying dead-zone

  • Authors:
  • Guo Wencheng;Shi Wuxi;Guo Lijin

  • Affiliations:
  • School of Computer Technology and Automation, Tannin Polytechnic University, Tannin;School of Computer Technology and Automation, Tannin Polytechnic University, Tannin;School of Computer Technology and Automation, Tannin Polytechnic University, Tannin

  • Venue:
  • CCDC'09 Proceedings of the 21st annual international conference on Chinese control and decision conference
  • Year:
  • 2009

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Abstract

A direct adaptive fuzzy control scheme is developed for a class of nonlinear discrete-time systems. In this scheme, the fuzzy logic system is used to design controller directly, and the parameters are adjusted by time-varying dead-zone, which its size is adjusted adaptively with the estimated bounds on the approximation error. The proposed design scheme guarantees that all the signals in the resulting closed-loop system are bounded, and the tracking error converges to a small neighborhood of the origin. Simulation results indicate the effectiveness of this scheme.