Analysis of stability and delay predictor of networked control system

Computer Engineering and Applications ›› 2014, Vol. 50 ›› Issue (8): 16-20.

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Analysis of stability and delay predictor of networked control system

ZHANG Jun1，2, LUO Dayong1

1.School of Information Science and Engineering, Central South University, Changsha 410075, China
2.Hunan Modern Logistics Occupation Technical College, Changsha 410000, China

Online:2014-04-15 Published:2014-05-30

网络控制系统的时延预估器及稳定性分析

张俊1，2，罗大庸1

1.中南大学信息科学与工程学院，长沙 410075
2.湖南现代物流职业学院，长沙 410000

Abstract

Abstract: Against the effect on Networked Control System（NCS） caused by networked time-delay, it analyzes character of two different time-delays, builds a predictor model to networked time-delay in this paper that is emphasized on uncertainty of delay from control to actuator in NCS and makes the uncertainty time-delay to be certain. And it analyzes the characteristic value of discrete function with delay for the NCS, gets the stability conditions. Finally, it proves the method right by example.

Key words: networked time-delay, predictive model, stability

摘要： 针对网络控制系统中网络延时对系统的影响，分析了两种网络延时的特点，建立了网络时延预估模型，重点对从控制器到执行器的网络延时的不确定性进行了预估分析，进而将不确定性延时的网络控制系统转换为确定时延时，并且通过分析系统的时滞离散方程的矩阵特征值的特性，给出了离散系统方程的稳定性条件。最后通过数值例子验证了该方法的有效性。

关键词: 网络时延, 预估模型, 稳定性

ZHANG Jun1，2, LUO Dayong1. Analysis of stability and delay predictor of networked control system[J]. Computer Engineering and Applications, 2014, 50(8): 16-20.

张俊1，2，罗大庸1. 网络控制系统的时延预估器及稳定性分析[J]. 计算机工程与应用, 2014, 50(8): 16-20.

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Analysis of stability and delay predictor of networked control system

网络控制系统的时延预估器及稳定性分析

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