Direct Adaptive Fuzzy Output Feedback Control for a Class of SISO Nonlinear Systems with Unknown Control Direction
نویسندگان
چکیده
In this paper, a direct adaptive output feedback control scheme using fuzzy systems is presented for a class of uncertain SISO nonlinear systems with unknown control direction. Within this scheme, a high-gain observer is employed to estimate the unavailable system states, a fuzzy system is employed to generate directly the control input signal with only output feedback, and the Nussbaum-type function is used to deal with the unknown control direction. The stability of the closed-loop system is performed using a Lyapunov approach. Simulation results are provided to verify the effectiveness of the proposed design.
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