Realization of Fuzzy-PID in PLC for Low Pressure Casting Control System

Li Jinhui; Hao Qitang; Zhou Yuchuan

Views : 0 下载量: 466 CSCD: 3

Export
Share
Collection
Album

Realization of Fuzzy-PID in PLC for Low Pressure Casting Control System
Issue 3, Pages: 183-185(2008)
Published： 2008 ，
DOI：

扫描看全文

[1]李晋辉,郝启堂,周玉川.低压铸造控制系统中模糊PID在PLC中的实现[J].特种铸造及有色合金,2008(03):183-185+160.

Li Jinhui, Hao Qitang, Zhou Yuchuan. Realization of Fuzzy-PID in PLC for Low Pressure Casting Control System. [J]. Special Casting & Nonferrous Alloys (3):183-185(2008)
[1]李晋辉,郝启堂,周玉川.低压铸造控制系统中模糊PID在PLC中的实现[J].特种铸造及有色合金,2008(03):183-185+160. DOI：

Li Jinhui, Hao Qitang, Zhou Yuchuan. Realization of Fuzzy-PID in PLC for Low Pressure Casting Control System. [J]. Special Casting & Nonferrous Alloys (3):183-185(2008) DOI：

摘要

在基于PLC的低压铸造控制系统中

西门子S7-200PLC中的PID运算功能

在具有传统PID算法静态性能好、无静差等优点的同时

也继承了其动态响应品质差、容易超调等缺点。通过对控制过程中的偏差和偏差变化的模糊化处理

设计出了能够对PID的3个参数KP、KI和KD进行在线调节的模糊PID控制算法

并采用间接寻址的方法

将其在PLC中进行了实现。

Abstract

When it is applied in the PLC-based control system for low pressure casting

the PID function in S7-200 PLC which was produced by the Siemens

not only has the advantages of good static performance

no steady-state error

but also has the disadvantages of poor dynamic response and being easy to overshoot.By fuzzification for error and error change during the control progress

the fuzzy-PID algorithm

which could adjust three parameters KP

KI and KD in PID algorithm online

was established.The new control algorithm was realized in PLC by indirect addressing.The production application shows that it exhibits desirable controlling effects.