Is there a way to know the PID gain value used in the controller with input and output data ?

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junsang Kim
junsang Kim on 3 Oct 2021
Answered: Siddharth Jawahar on 26 Oct 2021
I only know the input data of the pid controller and the output data obtained through the controller.
is there a way using Matlab to find out what P gain, I gain, and D gain the system used to bring the above output data ?
  1 Comment
Mathieu NOE
Mathieu NOE on 4 Oct 2021
hello
maybe if you are lucky you can try to make a transfer function estimate (using tfestimate) between the output and input time vectors.
then you can do a frequency match of this tfe with the transfer function of the PID and try fit the P,I,D gains

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