| 摘要: |
| 磺化过程PLC(programmable logic controller)控制系统显示了PLC在过程控制方面比其他 种类计算机的优越性,结束了磺化过程靠按动按钮控制温度、扭动阀门调节硫酸速度的人工 控制的历史.提供了PLC模拟扩展单元的连接方法,并且介绍了该系统中模拟量的采集、计算 、处理、控制及其有关程序.实践证明,这种模糊逻辑开关控制方法经济、有效,并且是可靠的. |
| 关键词: 可编程逻辑控制器,过程控制,磺化,模糊逻辑控制,铂电阻. |
| DOI： |
| 分类号: |
| 基金项目:本文研究得到天津市教委科研项目基金(No.97102)资助. |
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| Control Method of Analogue in PLC Control System for Process of Sulphonation |
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LI Wen-bing,PEI Wei-dong
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| Abstract: |
| PLC control system for sulphonation process shows the superiority of PLC over ot her kind of computer process control. It does not need the operator to press the button and turn the valve to control the temperature and regulate the velocity of sulphuric acid. In this paper, the connection method of PLC analogue expansio n I/O unit is presented, and the collection, computing, processing, control of a nalogue data and relevant programs in the system are also presented. The method of fuzzy logic switch control presented in the paper is economical, efficacious and reliable in practice. |
| Key words: PLC (programmable logic controller), process control, sulphonation, fuzzy logic control, platinum resistance. |
