Can we see from the logic diagram how the PI controller is internally controlled?
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Can we see from the logic diagram how the PI controller is internally controlled?
????What do you mean? Should I check the PID parameters? Or what?
That P is used to set something – how is it set? Are they the proportional, integral, and derivative parameters that control valve operation?
Oh. . . If you don’t know how PID control works, then you should study classical control theory – it can’t be explained in just a few words. You can think of the PID module as an operator; on a logic diagram, it’s simply represented there, with no real details visible.
This question is a bit profound. You can first review the basic knowledge of PID control.
No, the PID modules in DCS are almost entirely encapsulated; they only provide interfaces for setting input and output parameters, and the internal calculation logic cannot be revealed