Differential adjustment
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In DCS, the derivative in differential control represents the rate of change of the deviation. Is this rate of change calculated as the deviation between the measured value and the set value divided by the set value? I hope fellow sea lovers can offer guidance
The deviation DV = PV (i.e., the measured value) – SV (i.e., the set value). Differential control is carried out based on the rate of change of DV, that is, d(DV)/dt
The change in the output of the differential action is proportional to the speed of change of the differential time and the deviation, and is independent of the magnitude of the deviation. The greater the speed of change of the deviation and the longer the differential time, the greater the change in the output of the differential action.
Application of calculus, PID tuning, adjustments based on actual conditions. I don’t quite understand it, so I came in to take a look and learn*learn*.