半实物网络控制系统仿真平台设计

Design of a Simulation Platform of Semi-physical Networked Control System

网络控制系统(NCS)是一种新型计算机控制系统,通过工业网络实现控制单元之间的数据交换,但这也给控制系统带来了时延等问题。采用德国费斯托过程控制装置中的液位控制单元为实物被控对象,以校园局域网为通信介质,基于OPC协议,以西门子S7-300 PLC作为OPC服务器,将MATLAB作为OPC客户端,最终开发出一种基于OPC技术的实体对象与MATLAB结合的半实物NCS实验系统,为高级控制算法的研究和验证提供了一个良好的实验平台。

Networked Control System （NCS ） is a new kind of computer control systems, industrial networks different control parts communicate with each other, which leads new problems to control systems such as time delay and scheduling. Based on PCS water level control unit which is designed by Germany FESTO company as entity controlled object and campus LAN as communications media, Siemens s7-300 PLC is used as experimental platform of the server, OPC Toolbox of Matlab is used to achieve OPC server, finally, NCS experimental system is based on the half entity which combines OPC technology of entity object and MATLAB to provide a sound experiment environment for the study and validation of the advanced controlling algorithms.