ABSTRACT
With the development of computer, network, communication technology and control theory, networked control systems(NCSs) are being applied to industrial control field on a daily broadening scale, as in [1]. Networked control systems bring many advantages over the point-to-point wired conventional control systems, including stronger diagnostic capacity simpler installation, higher reliability and better interactivity, etc and can be applied to complex large system, as in [2]. It’s easy to realize remote control and resource sharing as well. At the same time, due to the introduction of the network in the closed loop control system, many new problems have arisen in the networked control system, such as sampling period, clock synchronization mechanism, transmission mode, node-driven means, network delay, network scheduling, packet loss, packet sequential disorder and communication constraints, etc, as in [3]. The random network delay makes it harder to analyze or synthesize the system. Overlong time delay will even make the system lose stability. Therefore, for the analysis and design of the network control system, network time delay compensation is an important factor and receive wide concern from the experts and scholars.
