无线传感器网络测控系统时延稳定性分析

针对无线传感器网络（WSNs）测控系统时延现象较为突出的特点，从确保测控系统控制的稳定性出发，根据李亚普诺夫（Lyapunov）稳定性的相关理论，在测控系统信息传输模型分析的基础上，建立系统渐进稳定的最大时延不等式，并结合温室WSNs测控系统的实际情况，以温度和湿度参数为研究对象对系统进行具体分析，利用Matlab中LMI工具箱，计算出在确保系统渐近稳定情况的最大允许时延，通过温室WSNs测控系统实例稳定性仿真分析表明：最大允许时延可为创建稳定的WSNs测控系统提供理论依据。

Stability analysis of time-delay of WSNs measurement and control system

Aimed at the time-delay,the distinct characteristic of wireless sensor networks(WSNs),based on the analysis of the information transmission model of measurement and control system,the maximum time-delay inequality that makes system asymptotically stable can be derived according to the related theories about stability of Lyapunov.At the same time in combination with the actual conditions,it makes a concrete analyzes of the WSNs measurement and control system in greenhouse with temperature and humidity parameters as the objectives of research.Then the maximum allowable time-delay is calculated by linear matrix inequality(LMI) of Matlab,which meets the stability of the WSNs measurement and control system.The simulation analyses of the example of stability on WSNs measurement and control system in greenhouse show that the maximum allowable time-delay can provide theoretical evidence to assure the stability of the system.