基于PLC的流量与压力控制系统的研究应用

摘要

This text puts forward a method to realize control of analog measurand in moderate and small closed-loop system by digitizing adjuster, and closed-loop control algorithm for detection analog process. Elaborates the principle of control of the PLC PID instruction, and Mitsubishi PLC PID algorithm. In practical applications, the system to achieve the the PID instruction program on the flow and pressure analog closed-loop process control is used, the control system to obtain a more stable control in the production debugging.%　　提出了在PLC控制的中小型系统中，监测模拟量过程的闭环控制的算法；阐述PLC中PID指令的控制原理、三菱PLC中PID的算法；在实际应用中，实现PID指令程序对流量、压力模拟量的闭环过程控制的使用，该控制系统在生产调试中得到较稳定的控制。