网络控制系统稳定性分析和控制方法

Stability Analysis and Control Methods of Networked Control System

随着大规模集成电路技术的提高,网络通讯技术的成熟及对大规模系统和远程式控制系统的需要,网络控制系统越来越受到人们的青睐。网络控制系统具有高的性价比和很大的灵活性,因此它逐渐被应用于工业控制中。在网络控制系统中不可避免地存在网络时延,它降低系统的性能或使系统变得不稳定,要设计控制器使系统具有期望的性能,是一件具有挑战性和吸引力的工作。为了给初步进入网络控制系统研究的人员提供一些必要的知识,分析了网络控制系统的结构、原理,网络控制系统中延时的来源及近年来有关网络控制系统的一些控制和稳定性分析方法。

With technology progression of large scale integrated circuit（LSI）, matureness of network technology, large systems and remote control systems required by people, the networked control systems（NCS） has been of welcome to people. Gradually, the NCS are applied to area of industry control. Networked-induced delay inevitably exist in the NCS, it deteriorates system performance, and can even destabilize the system. It is challengeable and attractable to design a valid controller for gaining expectable system performance. In order to providing some essential knowledge for beginner on study of the NCS, the paper analyses structure and principle of NCS, analyses source of networked-induced delay, and analyses some control and stability analysis methods from recent years about NCS.