网络化控制系统的建模与控制

Modeling and management of networked control systems

针对具有不确定时变延时以及数据包丢失的网络化控制系统,提出了一种建模方式来研究该系统的稳定性以及镇定控制器设计的问题.用自由权矩阵结合Lyapunov-Krasovskii方法给出了使得网络化控制系统渐进稳定的充分条件,自由权矩阵的引入降低了采用固定权矩阵方法所得结果的保守性.给出了镇定控制器以及保证系统渐进稳定的最大延时的求解算法,数值算例验证了所提方法的可行性.

A new method was formulated for modeling discrete networked control systems which have both time-varying delay and packet loss.Using the model,the stability and controller design needs of networked control systems were analyzed.Sufficient conditions to asymptotically stabilize the system were possible using the free-weighting matrices method and the Lyapunov-Krasovskii function.The introduction of free-weighting matrices reduced the conservatism of results obtained with the fixed-weighting matrices method.A controller to stabilize the system and an algorithm to provide maximum delay when the system was stable were presented.A simulation was run that illustrated the feasibility of the proposed approach.