非线性系统的直接自适应输出反馈监督模糊控制  

Direct adaptive fuzzy output feedback control for uncertain nonlinear systems

作　　者：佟绍成[1] 柴天佑[2] 

机构地区：[1]辽宁工学院数理系,辽宁锦州121001 [2]东北大学自动化研究中心,辽宁沈阳110004

出　　处：《控制与决策》2004年第3期257-261,共5页Control and Decision

基　　金：国家自然科学基金资助项目(60274019);国家973规划资助项目(2002CB312200).

摘　　要：针对一类单输入单输出非线性不确定系统,提出一种稳定的直接自适应模糊输出反馈监督控制算法.该算法不需要系统的状态完全可测的假设条件,监督控制不仅迫使系统的状态在指定的集合内,而且当模糊自适应控制处于良好的工作状态时,监督控制可以关闭.证明了整个模糊自适应输出反馈控制算法可以保证闭环系统稳定.An observer-based direct adaptive fuzzy control with supervisory mode for a class of unknown nonlinear systems is developed. The proposed approach does not need the availability of the state variables. A supervisory controller is appended to the fuzzy adaptive controller to force the state to be within the constraint set. If the fuzzy adaptive controller can not maintain the stability, the supervisory controller is activated to guarantee the stability. If the fuzzy adaptive controller works well, the supervisory controller is inactivated. The overall adaptive control scheme guarantees the stability of the whole closed-loop systems.

关 键 词：非线性系统 模糊自适应 反馈控制 监督控制 稳定性分析 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置]