网络化控制系统随机时延的补偿研究(英文)  

Compensation for the stochastic delays in networked control systems

作　　者：葛愿[1] 丛爽[1] 尚伟伟[1] 

机构地区：[1]中国科学技术大学自动化系,合肥230027

出　　处：《中国科学院研究生院学报》2013年第2期179-186,共8页Journal of the Graduate School of the Chinese Academy of Sciences

基　　金：Supported by the National Natural Science Foundation of China(61074050,61203034,50905172);the Youth Talent Fund of Anhui Education Department(2012SQRL086ZD)

摘　　要：在网络化控制系统中引入离散隐马尔可夫模型,建立网络状态与控制器-执行器时延之间的概率模型.网络化控制系统被建模成一个马尔可夫跳变线性系统,并预测出当前采样周期内的控制器-执行器时延.使用该预测值设计一个状态反馈控制器,实现对控制器-执行器时延的补偿.对比仿真实验验证了所提方法的优越性.The discrete-time hidden Markov model is employed to model the probabilistic relation between the network states and the controller-to-actuator （C-A） delays in networked control systems （NCSs）. The NCS is modeled as a Markovian jump linear system and the C-A delay in the current sampling period is predicted. By taking the prediction into account, a state-feedback controller is designed to compensate for the stochastic C-A delays. The superiority of the proposed method is demonstrated by the comparative simulation experiments.

关 键 词：网络化控制系统 离散隐马尔可夫模型 马尔可夫跳变线性系统 状态反馈控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]