摘要
论文研究基于两级网络的过程控制系统实验装置,底层利用Profibus现场总线,上层为工业以太网,被控对象是模拟电热锅炉的实验装置。首先分析了实验装置的组成和工作原理,给出了工艺模拟流程图。现场控制选用S7400系列PLC,上位机为PC机。并以模糊PID控制实验为例,说明了实验原理和步骤、系统功能和特点、控制系统实验的应用软件设计开发过程。由于本系统实验教学功能完善,不仅可以开设过程控制的基本实验,还能进行综合型和设计型的实验。
Process control system based on two-level networks for experiment equipment is studied in this paper. The Profibus is used for the first floor and the industry Ethernet is used for the upper floor,the controlled object is a experiment equipment imitating electrothermal boiler. The constitution and work principles of experiment equipment are analyzed and the technologic flow diagram is obtained. The S7-400 series PLC is selected as the field control and PC is adopted for up machine. Then,Fuzzy-PID control experiment is taken as an example for exhibiting this system. This system can not only set up the basic experiment about the process control,but also benefit for the experiment about the comprehensive type and design type.
出处
《计算技术与自动化》
2005年第1期49-52,共4页
Computing Technology and Automation
基金
国家财政部政府采购项目(HNGP-20032B016)
