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西门子PLC的PID模块简介[0]

Posted on 2023年11月14日 by

西门子PLC中的PID模块和经典PID模块并不相同,其中的微分是采用不完全微分法(在原微分基础上增加了低通滤波器,具体见此)。

西门子官方的PID说明文档见此

西门子PLC的PID模块有两个版本:

PID_Compact 指令及其相关工艺对象提供具有调节功能的通用 PID 控制器。 
工艺对象中包含控制环的所有设置

PID_3Step 指令及其相关工艺对象为通过电机驱动的阀门提供具有特定设置的 PID 
控制器。 工艺对象中包含控制环的所有设置

以上方程在b=1,c=1,a=0时,方程可以和标准的PID方程(具体见此)进行转换。

参考资料:

  1. https://support.industry.siemens.com/cs/document/108210036/simatic-s7-1200-s7-1500-pid-%E6%8E%A7%E5%88%B6?dti=0&lc=zh-CN

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