In this paper, a methodology for the synchronization of two chaotic systems by means of a sampled driving signal is presented. The method is based on the fuzzy Takagi-Sugeno representation of the chaotic system, from which a continuous-time fuzzy observer is designed as the solution of an LMI problem. Then, via the dual-system, the fuzzy observer is digitally redesigned such that the performance is maintained for the sampled system. Numerical simulations of Chua's circuit are used to illustrate the effectiveness of the proposed synchronization methodology.
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