具有参数不确定性的长时延网络控制系统研究  

Research on Networked Control Systems with Long Time Delay and Parameter Uncertainties

作　　者：李静[1] 史建国[1] 左斌[1] 

机构地区：[1]海军航空工程学院战略导弹工程系,烟台264001

出　　处：《系统仿真学报》2009年第12期3684-3688,共5页Journal of System Simulation

基　　金：国家自然科学基金(60674090)

摘　　要：针对具有参数不确定性的长时延网络控制系统,提出了系统的建模方法,并且分析和讨论了系统的稳定性和控制器设计方法。当假设网络控制系统的传感机构为时间驱动,执行机构与控制器为事件驱动,被控对象具有参数不确定性以及网络诱导时延具有时变、不确定和大于单位采样周期的特点时,运用矩阵分析理论,将广义网络被控对象建模为一类含有不确定项的线性离散系统。基于Lyapunov稳定性理论和线性矩阵不等式方法,分析了闭环系统渐近稳定的充分条件,并推导出系统的控制器设计方案。仿真结果表明稳定判据的可行性与控制器设计的有效性。Considering a class of networked control systems （NCS） with long time delay and parameter uncertainties, the issue of modeling and stability for this class of NCS was studied, and that the design method of the controller was proposed. Supposed that sensor nodes were time driven, actuators and the controller were event driven, and the system parameters of NCS were uncertain, the network induced delay was time-varying, uncertain and more than one sampling period, the generalized plant was modeled as an uncertain linear discrete system based on the analysis theory of matrix. Utilizing Lyapunov stability theory and linear matrix inequality, a sufficient condition and the controller for this class of NCS was derived. Simulation results show that the stability criterion is feasible and the controller design is effective.

关 键 词：网络控制系统 不确定长时延 LYAPUNOV稳定性 线性矩阵不等式 参数不确定性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]