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Robust H controller design for a class of nonlinear fuzzy time-delay systems

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4 Author(s)
Wang Miaoxin ; Dept. of Automation, North China Electric Power Univ., Beijing 102206, P. R. China ; Liu Jizhen ; Liu Xianqjie ; Liu Juncheng

The problem of fuzzy modeling for state and input time-delays systems with a class of nonlinear uncertainties by fuzzy T-S model is addressed. By using the linear matrix inequality (LMI) method, the problem of fuzzy robust H controller design for the system is studied. Assuming that the nonlinear uncertain functions in the model considered are gain-bounded, a sufficient condition for the robustly asymptotic stability of the closed-loop system is obtained via Lyapunov stability theory. By solving the LMI, a feedback control law which guarantees the robustly asymptotic stability of the closed-loop system is constructed and the effect of the disturbance input on the controlled output is ruduced to a prescribed level.

Published in:

Journal of Systems Engineering and Electronics  (Volume:20 ,  Issue: 6 )