基于交换式以太网的网络控制系统仿真平台  

Simulation platform for networked control system based on switched Ethernet

作　　者：胡晓娅[1] 朱德森[1] 汪秉文[1] 

机构地区：[1]华中科技大学控制科学与工程系,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2005年第10期89-91,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：高等学校博士学科点专项基金资助项目(20020487023)

摘　　要：研究了传统以太网和交换式以太网的网络时延问题,提出了一种基于交换式以太网的网络控制系统仿真平台.该仿真平台用两台计算机分别仿真实际控制系统中的控制器和被控对象,这两台计算机通过实际网络相连.其中控制器和被控对象通过Matlab仿真实现,两者的数据通信通过高级程序语言VB完成,VB与Matlab的数据交互通过ActiveX自动化技术解决.根据网络中央节点设备的不同,可以分别在真实的以太网和交换式以太网环境下,仿真不同网络负载时的网络控制系统.仿真实验证明了该平台的有效性和可行性.This paper studied the network-induced delay of Ethernet, switched Ethernet, and proposed a kind of networked control system simulation platform based on switched Ethernet. In the platform, actual controller and plant in control systems are simulated by two computers, connected through real network. The controller and plant＇s simulation were realized by Matlab, their data exchanging were achieved by VB, the communication between Matlab and VB was solved by ActiveX technology. When using different central devices, the platform can simulate networked control systems under different network load in real Ethernet or switched Ethernet environment. The experimental results showed the platform is effective and feasible.

关 键 词：网络控制系统 以太网 交换式以太网 网络延时 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]