基于PLC的40T混合磁体低温分配阀箱压力控制系统

摘要

The S7-300 PLC-based pressure control system for 40T hybrid magnet cryogenic distribution valve box was designed.In the design scheme of the original pressure control system,the PID control over the pres-sure 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.%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.