摘要
针对一类由N个子系统构成的线性关联大系统,研究其可分散H∞控制时关联矩阵应该满足的条件.在此基础上,对于具有一般性关联作用的线性大系统,采用多级控制方法设计其分散协同H∞控制器.多级控制是一种两步控制器设计方法.首先对大系统进行分解,针对每个子系统使用H∞优化算法设计状态反馈;然后,对于子系统间的关联作用,使用结构摄动技术设计协同控制器,从而减小关联作用的影响,改进整个系统性能.这样得到的多级控制器不仅可使整个闭环大系统内稳定,能够满足H∞性能,而且工程上便于实现.
The linear large-scale system in this paper was modeled as interconnection of N subsystems. The interconnected matrix was analyzed in the case this system may be decentralized stabilization through H∞ feedback control. Based on this, for the large-scale system with general interconnected matrix, a decentralized cooperative H∞ controller is proposed via multilevel control approach. The multilevel control approach is a twostage controller design. In the first stage, the large-scale system is decomposed. For each subsystem, local state feedback controller is designed using H∞ optimal algorithm. The second stage constructed a cooperative controller through structural perturbation technique. This cooperative controller can reduce the interconnected effect and improve the overall system performance. The controller obtained through above mentioned method makes the general interconnected large-scale system inner stabilized and achieves the H∞ performance requirements. Moreover, it is easy to realize in engineering.
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第A02期48-52,共5页
Journal of Southeast University：Natural Science Edition
关键词
线性大系统
分散控制
H∞控制
状态反馈
linear large-scale system
decentralized control
H∞ control
state feedback
作者简介
仝西岳（1977-），男，博士生；
李东旭（联系人），女，教授，博士生导师，dongxuli@263．net．
