摘要
针对一类不确定非线性系统提出一种新的模糊自适应控制方法。用模糊逻辑系统逼近未知函数 ,并根据前一步参考误差来修正模糊逻辑系统的输入 ,以此对逼近误差进行补偿。该方法不但能保证闭环系统稳定 ,而且可使跟踪误差收敛于原点或原点的一个小邻域内。仿真结果验证了此方法的有效性。
A new adaptive fuzzy control method for a class of uncertain nonlinear systems is presented. In this method, two fuzzy logic systems are used to approximate unknown functions, and the reference error vector defined is added to the input of one fuzzy logic system to compensate for the approximate errors of fuzzy logic systems. It is proved that the proposed method can not only guarantee the stability of the closed-loop system, but also make the tracking error converge to the origin or its small neighborhood. Simulation results demonstrate the effectiveness of this method.
出处
《控制与决策》
EI
CSCD
北大核心
2000年第3期282-285,共4页
Control and Decision
关键词
参考误差
模糊逼近
输入修正
自适应模糊控制
adaptive fuzzy control, reference error, fuzzy approximation, input amendment
