浅谈利用PID串级调节实现氮压机的喘振保护

Using PID Cascade Regulation to Achieve Surge Protection of Nitrogen Compressor

文章论述了离心式压缩机的喘振原理和危害,以及如何利用简单的PID回路串联起来形成串级回路,在串级之间加入喘振保护曲线的计算公式,计算结果减去一定的喘振裕度值之后作为主回路的设定值,从而实现氮压机喘振保护。

The article discusses the principle and harm of surge of the centrifugal compressor. And how to use simple PID loops to form a cascade loop, and addd the calculating formula of surge protection curve between the two PID loops. Using the calculation results to minus the surge margin value as the set value of the main loop. In order to achieve surge protection of the nitrogen compressor.