基于PLC的40T混合磁体低温分配阀箱压力控制系统  

Design of Pressure Control System for 40T Hybrid Magnet Cryogenic Distribution Valve Box Based on PLC

作　　者：方明[1] 欧阳峥嵘[1] 

机构地区：[1]中国科学院合肥物质科学研究院强磁场科学中心

出　　处：《化工自动化及仪表》2017年第9期857-860,共4页Control and Instruments in Chemical Industry

摘　　要：基于S7-300 PLC设计混合磁体低温分配阀箱压力控制系统,阀箱内部各处压力控制的PID实现方法相对独立,并未考虑到相互影响。为此,在PID控制方案中加入了前馈控制,使过冷槽压力波动在安全范围内。The S7-300 PLC-based pressure control system for 40 T hybrid magnet cryogenic distribution valve box was designed. In the design scheme of the original pressure control system,the PID control over the pressure within valve box stayed relatively independent and considered no influence between each other. In this new PID control scheme,the feed-forward control was added to make super-cooled tank pressure fluctuate within the safety range.

关 键 词：压力控制系统 低温分配阀箱 S7-300 PLC PID 前馈控制 

分 类 号：TH862.6[机械工程—仪器科学与技术]