摘要
提出了在PLC控制的中小型系统中 ,用PLC的梯形图来完成变速积分PID算法 ,实现了对模拟量的闭环控制 ,给出了程序流程图和梯形图程序。
This text puts forward a method to realize control of analog measurand in moderate and small closed-loop system by digitizing adjuster, and using PLC echelon chart program to achieve shift integral PID arithmetic. The method is generally applied to slowly changing process such as humidity, liquid location and etc. with good dynamic performances. Taking panasonic(NAIS) PLC as example, the text presents program flow chart and echelon chart program.
出处
《信息技术》
2003年第1期41-43,共3页
Information Technology
