基于观测器的时延网络控制系统稳定性  

Observer-Based Stability of Networked Control Systems with Time-Delay

作　　者：邢伟[1] 孙阳[1] 戴良萃 

机构地区：[1]东北大学理学院,辽宁沈阳110819 [2]红塔辽宁烟草有限公司,辽宁沈阳110001

出　　处：《东北大学学报（自然科学版）》2014年第4期457-460,465,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(60974004)

摘　　要：针对一类传感器采用时间驱动,控制器和执行器采用事件驱动的确定短时延网络控制系统,设计了一个状态观测器.将该网络控制系统离散化,并在此观测器的基础上给出了系统的离散模型和判定渐近稳定的方法.通过建立一个Lyapunov函数并采用线性矩阵不等式(LMI)的方法获得系统渐近稳定的充分条件.仿真实例验证了该方法的可行性及有效性.A state observer was designed for a class of networked control systems with a short delay, in which the sensor is time-driven, and the controller and actuator are event-driven. The networked control systems were discretized, and a discrete model of the system was given. In addition, the determination method of asymptotic stability was given on the basis of the state observer. Sufficient conditions for the system asymptotically stable were obtained by building Lyapunov function and linear matrix inequalities. A simulation example showed the feasibility and effectiveness of the orooosed method.

关 键 词：网络控制系统 短时延 LYAPUNOV函数 线性矩阵不等式(LMI) 观测器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]