分布式探测系统的时延估计和稳定性分析

Network delay and stability in distributed detection system

分布式探测系统实现了探测控制系统的分布化和网络化,但由于网络信息传输时延的存在,使得信息传输实时性受到诸多条件的影响。为此,在分析分布式探测系统时延特性的基础上,利用MATLAB/Truetime工具箱实现系统的建模仿真,针对不同网络延时、丢包、干扰等情况对系统稳定性能进行了对比分析。仿真结果表明:网络时延增大是影响系统稳定性能的主要因素,仿真流程对于网络探测的硬件系统构成和通信协议设计具有指导性意义。

The distributed detection system has shaped the distributed and network structure of the detection and control system.Due to the existence of network delay,the real-time performance of information transmission is affected by various conditions.In order to solve this problem,based on the analysis of network delay of the distributed detection system,a simulation model of MATLAB/ Truetime was established for stability analysis of the distributed detection system,which was tested under the circumstances of different network delay and pocket loss.The results show that an increase in network delay is the main factor influencing the stability of distributed detection system and that the simulation process will be of value to guiding the design and analysis of the distributed detection system.