Adaptive fuzzy tracking control for uncertain systems with dead zone and predefined accuracy

This paper addresses the adaptive fuzzy tracking control problem for a class of uncertain nonlinear strict-feedback systems with unknown dead-zone. A stable adaptive fuzzy control scheme is developed by using the backstepping technique. The obtained controller guarantees that the size of the tracking error satisfies the known accuracy. In addition, Barbalat's Lemma is employed to analyze the control performance and the stability of the closed-loop system. A simulation example is given to show the effectiveness of the proposed control scheme.