网络控制系统（NCS）是目前网络和通信领域的研究热点，由于网络的引入，网络控制系统的仿真研究存在一定的难度。本文首先给出了NCS的定义，介绍了网络控制系统的研究现状，以及现有的网络控制系统的仿真软件，并重点介绍了Truetime工具箱。应用MATLAB和Truetime工具箱为基础，以一个三回路的网络控制系统为实例建立了Truetime仿真模型，通过仿真数据分析，验证了基于Truetime工具箱的网络控制系统模型的有效性。网络控制系统的推行，能够有效地减少人工错误，为用户节省大量时间。%Networked Control System(NCS)is the research focus in control field. Because of the introduced of Network, it's difficult to research NCS simulation. Firstly, the definition of NCS is given in the paper, and the research of NCS and the simulation tools of NCS are also proposed, especially the Truetime toolbox. Then, the simulation model of a NCS with three-loops is designed by Matlab and Truetime toolbox. According to the analysis of simulation results, the validity of the simulation method is proved.
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