中文摘要：

应用自适应模糊逼近方法研究了一类具有外部扰动的非线性系统的自适应跟踪控制问题。通过设计适当的Lyapunov函数和自适应率,解决外部扰动问题。利用反推技术和模糊逻辑系统的逼近能力,设计了一种新的自适应模糊控制方案,该方案保证了闭环系统的所有信号是有界的,并且跟踪误差收敛到原点的小邻域。

英文摘要：

Adaptive tracking control problem for a class of nonlinear systems with external disturbances is studied by using adaptive fuzzy approximation approach. By designing the appropriate Lyapunov function and the adaptive rate,the problem of external disturbance can be solved.A new fuzzy control scheme is given by using the backstepping technique and the approximation ability of the fuzzy logic system.The proposed control scheme ensures that all signals of the closed-loop system are bounded and the tracking error converges to the small neighborhood of the origin.