基于混杂系统技术的网络控制系统的建牛与稳定性分析  

Modeling and Stability Analysis Based on Hybrid System Technology for Networked Control Systems

作　　者：马丹[1] 赵军[2] 

机构地区：[1]东北大学教育部暨辽宁省流程工业综合自动化重点实验室,辽宁沈阳110004 [2]东北大学信息科学与工程学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2005年第9期817-820,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(70274009);高等学校博士学科点专项科研基金资助项目(20020145007);辽宁省自然科学基金资助项目(20032020)

摘　　要：针对网络控制系统中网络带宽受限所产生的传输延时问题提出一种基于混杂系统技术的建模方法,采用动态输出反馈形式给出了闭环网络控制系统描述,将采样周期和传输延时为常数的情况推广到时变情况,使所建立的模型更具有一般性;并运用混杂系统理论分析了网络控制系统的稳定性,避免了将其转化成一般延时系统构造Lyapunov函数所带来的困难.增大系统稳定域的同时,使系统具有良好的动态性能.仿真结果说明了此方法的可行性和有效性.A modeling method based on hybrid system technology for a class of networked control systems with network induced delay is presented. The stability of networked control systems is analyzed using the theory of hybrid systems. A stabilizing dynamic output feedback eontroller is designed to implement the stability of the closed-Imp system to avoid the difficulty caused by eonstructing Lyapunov functions of time delay systems. The condition on which the sampling period and transmission delay become eonstant is extended to be a time variant condition with the system model generalized. The stability region is thus enlarged with satisfactory dynamic performance. Simulation results show the feasibility and efficiency of the proposed method.

关 键 词：网络控制系统 混杂系统 传输延时 动态输出反馈 稳定性 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]