摘要
针对一类MIMO非线性状态不可测系统,提出一种基于观测器的模糊自适应输出反馈控制方法,通过应用“主导输入”的概念,并将自适应控制、H∞控制与模糊逻辑系统相结合,导出了输出反馈控制律以及参数的自适应律.基于李亚普诺夫函数证明了该控制方法可保证闭环系统的全局稳定,并获得了H∞跟踪性能指标.
The fuzzy adaptive control scheme based on observer is proposed for a class of MIMO nonlinear systems whose states are unavailable. By applying 'dominant input' concept, and combining adaptive control and H∞ control with fuzzy logic systems, the output feedback control law and parameter adaptive laws are derived. It is proved that the whole control scheme can guarantee the stability of the closed-loop system, and achieve H∞ tracking performance based on Lyapunov function method.
出处
《控制与决策》
EI
CSCD
北大核心
2005年第7期789-793,共5页
Control and Decision
基金
国家自然科学基金项目(60274019)
国家973规划项目(2002CB312200).
关键词
MIMO非线性系统
观测器
模糊自适应控制
H^∞控制
Adaptive control systems
Closed loop control systems
Feedback control
Fuzzy sets
Lyapunov methods
Optimal control systems
State estimation
