Stability analysis of improved networked predictive control systems with random network delays

Considering the calculation difficulty of network controller which is resulted from the network delay, on the basis of G.P.L[1, 5], this paper gives a new method to calculate controller, there is a modification in the new method. Also this paper discusses stability of networked control systems (NCS) with random network delay in the forward and feedback channels using switched system theory. First, it is pointed out that the NCS with random delays can be represented by discrete-time switched system. Then, the necessary and sufficient conditions for the stability of closed-loop NCS with bounded random delays are derived based on LMIs.