线性系统的动态输出反馈最优扰动抑制  

Optimal Disturbance Rejection via Dynamic Output Feedback for Linear Systems

作　　者：唐功友[1] 赵翀[1] 

机构地区：[1]中国海洋大学信息科学与工程学院,山东青岛266100

出　　处：《信息与控制》2008年第1期119-123,128,共6页Information and Control

基　　金：国家自然科学基金资助项目(60574023;40776051);山东省自然科学重点基金资助项目(Z2005G01)

摘　　要：首先通过求解Riccati方程和Sylvester方程,推导出前馈反馈最优扰动抑制控制律.然后构建了能同时预估状态和扰动的降维观测器,解决了前馈控制的物理不可实现问题.进而结合降维观测器和前馈反馈最优控制律,提出了一种动态输出反馈扰动抑制控制器的设计算法.最后通过仿真实例表明本文提出的控制算法的可行性.The optimal disturbance rejection control law in a feedback and feedforward form is first proposed by using the solutions of a Riccati equation and a Sylvester equation. Then a reduced-order observer whioh can estimate the state variables and disturbances is constructed to make the feedforward control physically realizable. With combination of the reduced-order observer and the optimal feedback and feedforward controller, a design algorithm is presented for the dynamic output feedback disturbance rejection control law. Finally, simulations are given to demonstrate the feasibility of the presented control algorithms.

关 键 词：线性系统 观测器 输出反馈 最优控制 扰动抑制 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]