Fuzzy robust adaptive control for a class of nonlinear systems with time-delay

A fuzzy robust adaptive control design scheme is developed for a class of nonlinear systems represented by input-output models with unknown nonlinear function and un-modeled dynamics. The control gain of the nonlinear system is also uncertain. The control law and update laws are constructed by on-line approximating the unknown nonlinear functions. The Lyapunov method based stability analysis shows that all the signals in the closed-loop are stable. Finally,simulation results show the effectiveness of the proposed algorithm.