多变量网络控制系统建模与稳定性分析  

Modeling and Stability Analysis of Multi-variable Networked Control Systems

作　　者：魏利胜[1] 费敏锐[1] 

机构地区：[1]上海大学机电工程与自动化学院,上海200072

出　　处：《系统仿真学报》2008年第14期3759-3762,共4页Journal of System Simulation

基　　金：高等学校博士学科点专项科研基金(20040280017);上海市重点学科(T0103);上海市科委重点基础研究项目(04JC14038);上海市电站自动化技术重点实验室资助

摘　　要：研究了一类多变量网络控制系统的建模和稳定性问题,基于线性时不变对象,推导了该类网络控制系统的时滞连续时间数学模型,并利用李雅普诺夫第二法,分析了系统的渐近稳定性,得到了系统稳定运行的最大允许时延和全时滞稳定的条件。最后,通过实例仿真分析证实了本文所提理论的有效性,以及稳定判据的可行性。The issue of modeling and stability for multi-variable networked control systems （NCS） was researched. A time delay continuous-time mathematic model of the system was developed based on linear time-invariant plant. Asymptotical stability of the system was analyzed using the 2nd Lyapunov method, and criteria of delay-dependent asymptotical stability for systems were derived. And the conditions of all delays which could make system stable were derived. At last, simulation examples show the effectiveness of the presented theory and the stability criterion.

关 键 词：网络控制系统 稳定性 网络延时 最大允许时延 全时滞 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]