PID controller | Wikiwand

PID controller | Wikiwand –A proportional–integral–derivative controller is a control loop mechanism employing feedback that is widely used in industrial control systems and a variety of other applications requiring continuously modulated control. A PID controller continuously calculates an error value

e {\displaystyle e }

as the difference between a desired setpoint and a measured process variable and applies a correction based on proportional, integral, and derivative terms , hence the name.