Observer-based robust direct adaptive fuzzy control

For a class of nonlinear systems with uncertainty, an observer-based robust direct adaptive fuzzy control scheme was proposed. In the case that the states of the system are not available· an observer is designed and an observer-based robust adaptive fuzzy control scheme that the generalized fuzzy hyperbolic model (GFHM) is employed to structure a fuzzy controller is developed. The overall control scheme can guarantee that the tracking error converges in the small neighborhood of origin, and all signals of the closed-loop system are uniformly bounded. A simulation example was proposed to demonstrate the effective of the proposed control algorithm.