针对采样周期的变化对网络控制性能的影响,综合考虑了网络的传输误差以及传输时延等因素,对网络控制系统进行了数学建模分析,提出一种递推式变采样周期在线动态调度算法.以误差泛函积分评价指标IAE来衡量控制回路的QoC.运用Matlab/Simulink中True-time工具箱构建网络控制系统仿真平台并进行仿真,结果表明该调度算法改善了网络控制系统的稳定性并提高了系统的实时性、控制质量和服务质量.%Considering the sampling period influence on the network control system, and having the factors like transmission error, time-delay in the transmission considered, the mathematical modeling for the network control system was established to propose the on-line and dynamic scheduling algorithm for recursive and variable sampling period;and having the QoC of control loop evaluated with the IAE,I. E. The error functional integral evaluation indexes,and the simulation platform built with the true-time toolbox in the Matlab/Simulik show that this scheduling algorithm can improve the stability and promote the real-time of the networked control system, including the control quality and service.
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