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.
出处
《信息与控制》
CSCD
北大核心
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)
关键词
线性系统
观测器
输出反馈
最优控制
扰动抑制
linear system
observer
output feedback
optimal control
disturbance rejection
