一类严格反馈非线性系统的间接自适应模糊控制  

Indirect adaptive fuzzy control for a class of strict-feedback nonlinear systems

作　　者：师五喜[1] 郭利进[1] 郭文成[1] 

机构地区：[1]天津工业大学电气工程与自动化学院,天津300160

出　　处：《控制与决策》2009年第10期1573-1575,1579,共4页Control and Decision

基　　金：天津市高等学校科技发展基金项目(2006ba54)

摘　　要：针对一类不确定严格反馈非线性系统,设计了间接自适应模糊控制方法.该方法用模糊逻辑系统逼近设计过程中的未知函数,基于时变宽度死区对模糊逻辑系统中的未知参数进行自适应调节,并对时变死区宽度设计了自适应律.证明了该方法能使闭环系统的所有信号有界,且可使跟踪误差收敛到原点的小邻域内.仿真算例验证了该方法的有效性.An indirect adaptive fuzzy control scheme is developed for a class of uncertain striet-feedhaek nonlinear systems. In this method, the fuzzy logic systems are used to approximate the unknown functions in design process, the parameters in fuzzy logic systems are adjusted based on time-varying dead-zone whose size is adjusted adaptively. It is proved that all the signals in the resulting closed-loop system are hounded, and the tracking error converges to a small neighborhood of the origin. A simulation example shows the effectiveness of the proposed control scheme.

关 键 词：严格反馈非线性系统 自适应模糊控制 时变宽度死区 稳定性分析 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]