具有大时滞时间段的网络控制系统的研究

项目名称： 具有大时滞时间段的网络控制系统的研究

项目编号： No.60804011

项目类型： 青年科学基金项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 孙希明

作者单位： 大连理工大学

项目金额： 20万元

中文摘要： 项目研究具有大时滞时间段的网络控制系统的稳定性和控制器的综合问题。由于在网络传输过程中大的时延以及连续丢包的产生，致使在某些时间段上，时延的上界大于基于目前方法测出的使系统保持稳定的上界。该时间段称之为大时滞时间段。具有大时滞时间段的网络控制系统大量存在，但基于目前国际上普遍采用的时滞微分方程的理论不能或难以对该类系统进行稳定性分析和控制器综合。这促使寻求一种新的方法和理论解决此问题。项目提出的基于切换思想的Lyapunov 泛函指数估计的方法能有效解决该类系统的稳定性分析和控制器综合等问题。研究内容包括具有大时滞时间段的网络控制系统的建模和稳定性分析、控制器的设计等。项目提出的方法可进一步应用到采样数字系统以及容错控制系统，并可为实际的网络控制系统和机器人控制等实际问题提供理论基础。

中文关键词： 网络控制系统；时滞系统；大时滞时间段；Lyapunov 泛函指数估计方法

英文摘要： This project deals with stability analysis and controller synthesis for networked control systems (NCSs) with large-delay period. The upper delay bounds are usually much larger than ones obtained by existing techniques to guarantee system stability due to the existence of large network-induced delay and consecutive packet loss in the transmission process. Such a time period is called the large delay period. Although NCSs with large delay period can be found in many cases, it can not be or is difficult to be solved by existing functional differential equation theory,which is widely adopted in international control field currently. This motivates us to try to find a new method and theory to overcome it. This project proposes a Lyapunov functional exponential estimation method based on switching technique, which can efficiently solve problems on stability analysis and controller synthesis for NCSs,and the other problems. The contents of this project include the model, stability analysis and controller synthesis of such systems, and so on. The method proposed in this project is expected to be further applied in sampled-data systems and toleration control systems. Also, this method can provide theoretical principle for practical NCSs and robot control, and the other practical control problems.

英文关键词： Networked control systems; delay systems; large delay period; method of Lyapunov functional exponential estimation