Can you explain drawbacks between P,I,D & PID controller

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Can you explain drawbacks between P,I,D & PID controller..

Answer / koolfire

P,PID controller'S are used to tune the output to a desired value.
however for proportional controllers it always has a steady state error as the output will never reach the desired value but will be close to it.

For a PID controller due to its integral and derivative action(rate of change of error), it cancels out the steady state error.

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