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Robust tracking control of T-S fuzzy systems based on fuzzy Lyapunov approach

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3 Author(s)
Euiyoung Kim ; Dept. of Electr. & Electron. Eng., POSTECH, Pohang, South Korea ; Dongyeop Kang ; Sangchul Won

This paper addresses the problem of robust tracking control for nonlinear systems with external disturbances. The nonlinear system is represented by the discrete-time Takagi-Sugeno (T-S) fuzzy model. The control scheme is based on Hinfin performance to attenuate the tracking error as small as possible for the external disturbances. The stability of the whole closed-loop model is investigated using the fuzzy Lyapunov function. Sufficient conditions are derived in terms of a set of bilinear matrix inequalities (BMIs). The key point of the proposed approaches is to apply the fuzzy Lyapunov function in the discrete-time robust tracking control problems. The simulation results show the effectiveness of the proposed method.

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Date of Conference:

18-21 Aug. 2009