Robust H∞ fuzzy control of dithered chaotic systems

  • Authors:
  • Feng-Hsiag Hsiao

  • Affiliations:
  • Department of Electrical Engineering, National University of Tainan, 33, Section 2, Shu Lin Street, Tainan 700, Taiwan, ROC

  • Venue:
  • Neurocomputing
  • Year:
  • 2013

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Abstract

In this study, a combining scheme of fuzzy controllers and dithers via NN-based approach was proposed to tame the chaotic system. In terms of Lyapunov's direct method, a stability criterion was derived to guarantee that the trajectory described by the chaotic system under fuzzy control can be steered into a periodic orbit or a steady state. According to the stability condition of this criterion, a fuzzy controller was then synthesized to control chaos and achieve the H^~ control performance at the same time. A high frequency signal (commonly referred to as dither) was simultaneously injected to quench the chaotic motion when the fuzzy controller cannot quell the chaos. Finally, a numerical example of Chua's oscillator circuit with simulations is provided to demonstrate the feasibility of our approach.