网络控制系统若干通信网络实时特性分析

网络控制系统是通过各种通信信道组成一个或多个控制闭环，并具备优化决策、控制操作和信号处理的功能，是网络化的实时反馈及全分布式的控制系统。与传统的控制系统相比，网络控制系统将控制任务下放在智能化的设备上，从而提高了系统的安全性和可靠性。网络技术的迅猛发展和硬件价格的普遍降低，使得工业控制系统中网络控制系统的应用越来越广泛。在这一时代背景下，当前控制理论研究的热点迅速转变为网络控制系统的研究。通信网络成为网络控制系统的重要工具，其实时性在网络控制系统中占有重要地位。文中对网络控制系统若干通信网络的实时特性进行了研究和探讨。

Several Communication Network Real-Time Characteristic of Network Control System

Network control system is composed of a variety of communication channels to one or more closed-loop con trol, and has optimized decisions, control and signal processing functions, it is a control system of network real-time feed- back and fully distributed. Compared with traditional control system, network control system will control tasks devolved on intelligent equipment, thus improve the security and reliability of the system. With the development of network technology and the cost of hardware is reduced, the network control system is more and more widely applied in industry control system. In this background, the research of network control system has quickly become the current hot topics in the study of control theory. Communication network is the important tool of network control system. Real time communication network plays a key role in the network control. In this paper, several communication network real-time characteristics of the net-work control system are studied and discussed.