Answer Posted / amit kumar
PID is Proportional Derivative and Intergral. These are used
in the control system and are the heart of any controller.
Depending upon control system requirement the values of P, I
and D are defines. P is proportional gain and normally used
when we require accurate or continuous control action. I is
integral time and is used to remove the offset. D is
derivative time and is used to to make the control system
stable.
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