摘要
该文针对存在时变有界长时延的网络控制系统,讨论了具有时延补偿功能的状态观测器以及状态反馈控制器的设计方法。状态观测器根据控制器接收数据包的情况在开环预测和闭环预测两种模式之间切换,以补偿时延的影响。控制器的输入采用观测器的预测状态,从而将系统建模为一类具有多个子系统的离散切换系统。在此基础上,给出了状态观测器与控制器协同设计的方法。仿真结果表明:该文提出的设计方法能够比未采用补偿策略的方法取得更好的控制性能。
Considering the networked control systems （NCS） with time-vary long delays, a design method of feedback controller and observer with delay compensation is discussed. An open-loop observer and a close-loop observer are proposed to predict the current states of plant based on the conditions of data arrival, and the controller＇ s inputs are switched between the state of the open-loop observer and the close-loop observer. In this scheme, the NCS is modeled as a switched system and a co-design method of the observer and controller is given in terms of linear matrix inequalities （LMIs）. Finally, an example is given to validate that the method can obtain better performance than those without delay compensation.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2006年第2期167-172,共6页
Journal of Nanjing University of Science and Technology
基金
国家自然科学基金(60174019
60474034)
关键词
网络控制系统
时延
观测器
切换系统
networked control systems
delay
observers
switched system
