多路径的无线网络控制系统镇定性研究  

Stabilization analysis of wireless networked control system with multi-path channels

作　　者：张浩[1] 彭晨[1] 孙洪涛[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：《电子测量与仪器学报》2016年第11期1627-1634,共8页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(61273114);上海市科委科研创新基金(V.10-0109-14-019);上海市科委专项基金(B.10-0109-14-201)资助项目

摘　　要：研究了多路径传输环境下具有不确定时延的无线网络控制系统稳定性问题。首先采用了一种新方法把不同状态的网络时延信息分离出来,系统中传感器采用时间驱动,执行器和控制器均采用事件驱动方式。假设网络时延小于采样周期,利用不确定理论将无线网络控制系统建模为一类具有多时延的不确定线性离散系统;基于Lyapunov方法,给出了闭环系统稳定的充分条件,并采用线性矩阵不等式技术求出状态反馈控制律;仿真实例验证了该方法的正确性和有效性。In this paper, the stability for wireless networked control system with the uncertain delay under muhipath transmission environment is investigated. Firstly, the network delay of different state is separated by a new method. Suppose that the sensor node is time-driven, the executor and the controller are event-driven, and the network delay is less than one sampling period, the wireless networked control system is modeled as uncertain linear discrete system with multi-delay based on the uncertainty theory. Then the sufficient condition of stability for closed-loop system is proposed based on the Lyapunov functional approach and the state feedback controller is obtained based on the linear matrix inequality technology. Finally, the simulation results verify the accuracy and validity of the method proposed in this paper.

关 键 词：无线网络控制系统 多径传输 多时延 不确定 

分 类 号：TN925.2[电子电信—通信与信息系统] TP273[电子电信—信息与通信工程]