摘要
针对传统的集中控制策略在时滞补偿设计时存在的局限性,指出了采用分散控制策略进行时滞补偿设计的必要性和适用性。以子系统控制效果整体最优为控制目标进行分散控制结构的子系统控制器设计[1],且在考虑到分散控制系统存在多时滞,推导了基于递归响应法的时滞补偿的基本公式,并对各个子系统进行时滞补偿设计。运用入侵杂草优化(IWO)算法得到分散控制系统在LQG算法下各子系统的最优权矩阵。对某七层钢框架算例模型分析表明:由于时滞的存在,主动控制系统的控制效果变差,甚至导致系统不稳定,但采用分散控制策略,同时对各子系统进行时滞补偿设计,最终能使控制系统在各子系统时滞相异的情况下保持较好的控制效果。
As the limitation of traditional centralized control strategy in time-delay compensation design,the necessity and applicability of time-delay compensation design using decentralized control strategy are expounded. Asubsystem controller of decentralized control structure, whose target is that the control performance is global optimal, is designed[1]. Considering the multi-time-delay of decentralized system,a time-delay compensation strategy is introduced based on recursive response method,and then the compensation strategy is used to every subsystem. Invasive Weed Optimization（ IWO） is employed to obtain the best weight matrix of the subsystem in decentralized control system using LQG algorithm. Numerical simulation is conducted to a 7-storey steel-frame structure model. The results indicate that,time-delay can degrade the control performance and even cause the system unstable. Using the time-delay compensation method in the decentralize control system can make the control system remain appropriate performance when different amount of time-delay exists.
作者
王开心
谭平
潘兆东
魏勇
Wang Kai-xin;Tan Ping;Pan Zhao-dong;Wei Yong(Earthquake Engineering Research ＆ Test Center, Guangzhou University, Guangzhou 510405, China;Department Civil Engineering, Dongguan University of Technology, Dongguan 523808, China)
出处
《工程抗震与加固改造》
北大核心
2018年第3期106-112,120,共8页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金项目(51408142
51478129)
广东省教育厅团队项目(IRT13057)
广东特支计划项目(2014TX01C141)
关键词
分散控制
时滞补偿
递归响应法
评价指标
入侵杂草优化
decentralized control
time-delay compensation
recursive response method
evaluation criteria
IWO
