07CR41-C12 1SBP260020R1001

44723A HP
44727 HP
44736A HP
58503A HP
A5991A J5600 HP
E1406 HP
HOI-653A HP
C40-1621-00.S/0934603 V15
SM552A-173LE
P.11471-0-1011015 TEU 471 Hartmann & Braun
IS8500 232/422 HoloTrak
CC-TAIM01 HONEYWELL
CC-TDIL11 HONEYWELL
CC-TAIX51 HONEYWELL

分类:

描述

过程控制是指对温度、压力、流量、速度等连续变化的模拟量的闭环控制。PLC采用相应的A/D和D/A转换模块及各种各样的控制算法程序来处理模拟量,完成闭环控制。PID调节是一般闭环控制系统中用得较多的一种调节方法。过程控制在冶金、化工、热处理、锅炉控制等场合有非常广泛的应用。现代的大、中型PLC一般都有闭环PID控制模块,这一功能可以用PID子程序来实现,而更多的是使用专用PID模块来实现。

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