DS200TBCAG1AAB GE

VE3008 EMERSON
A6220 EMERSON
SLS1508 EMERSON
1C31169G02 EMERSON
VE4002S1T2B5
CE3007
SE3007
PMCSPAN
KJ4001X1-CK1
LID43.03 EMG
A2H124-24
A4H254-8F8T
C2RPS-PSM

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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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