自适应模糊模型在非线性系统中的仿真研究

针对一类仿射单输入单输出非线性系统采用模糊控制、模糊逻辑系统逼近和滑模控制相结合的模糊控制器，利用滑模控制及Lyapunov函数方法提出了直接模糊自适应控制方案。直接自适应控制器充分利用模糊控制规则，通过仿真表明该方法具有较好的跟踪性，能保证闭环系统稳定，跟踪误差收敛，具有一定的鲁棒性，系统中所涉及的所有变量有界，系统的跟踪误差渐近收敛于零或零的一个邻域内。

Simulation Study of Self-Adaptive Fuzzy Model in Nonlinear System

Considering that a class of affine single input single output non-linear system uses the fuzzy controller combining fuzzy control, fuzzy logic system approach, and sliding mode control, the paper has put forward a direct self-adaptive fuzzy control program based on sliding mode control and Lyapunov function. Direct self-adaptive fuzzy controller can take full advantage of fuzzy control law. The simulation indicates that the method is of good tracking performance, able to guarantee the stability of closed loop system and follow error convergence, and of certain robustness. All variables involved in the system are bounded. Tracking errors of the system asymptotically converge towards zero or within a neighborhood of zero.