一类物联网控制系统中的时延问题研究

计算机科学 ›› 2014, Vol. 41 ›› Issue (Z6): 303-305.

一类物联网控制系统中的时延问题研究

赵维佺,袁华强,李迪,魏小锐

东莞理工学院计算机学院东莞523808;东莞理工学院计算机学院东莞523808;华南理工大学机械与汽车工程学院广州510640;东莞理工学院计算机学院东莞523808

出版日期:2018-11-14 发布日期:2018-11-14
基金资助:
本文受国家自然科学基金(61300197),广东省教育部产学研结合项目(2012B091100295),东莞市科技计划项目(2011108102018)资助

Research on Delay in a Kind of Internet of Things Control System

ZHAO Wei-quan,YUAN Hua-qiang,LI Di and WEI Xiao-rui

Online:2018-11-14 Published:2018-11-14

摘要/Abstract

摘要： 物联网控制系统作为一类特殊的网络控制系统,是网络控制系统的延伸与扩展。在分析系统结构、采样周期对网络负荷和控制性能影响的基础上,对物联网控制系统的时延问题进行仿真研究。针对零时延、固定时延和可变时延3种典型情况,定量地分析了随机时延对系统性能的影响。针对不同负载条件下随机时延的分布进行了仿真,并得出结论:在网络总时延中,适当减少前向通道时延所占的比重,可以大幅度改善系统性能；随机网络时延比固定网络时延对系统性能的影响更严重。

关键词: 物联网控制系统,时延,网络负载,系统性能中图法分类号TP302.7文献标识码A

Abstract: As a kind of special networked control systems,internet of things control system is the extension and expansion of Networked Control Systems．Based on the analysis of system structure,the impact of sampling period on network load and control performance,the simulation research about delay of Internet of things control system was carried out．For there kinds of typical cases of zero delay,fixed time delay and variable delay,the impact on system performance was quantitatively analyzed．According to the delay distribution under different load conditions,the related simulations were finished．Simulation conclusions are as follows:reducing forward channel delay can improve system performance,random delay on Internet of things control system impact more seriously than the fixed delay.

Key words: Internet of things control system (IOT CS),Delay,Network load,System performance

赵维佺,袁华强,李迪,魏小锐. 一类物联网控制系统中的时延问题研究[J]. 计算机科学, 2014, 41(Z6): 303-305. https://doi.org/

ZHAO Wei-quan,YUAN Hua-qiang,LI Di and WEI Xiao-rui. Research on Delay in a Kind of Internet of Things Control System[J]. Computer Science, 2014, 41(Z6): 303-305. https://doi.org/

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