PID control : An abbreviated from Proportional-Integral-Derivative control.
There is the feedback control technique by calculation error from the different of the setpoint value and the actual value to manipulate the feedback signal match the setpoint signal.
PID process will try to reduce the calculation error by reprocessing input of the command.
The coefficients of PID control are Kp, Ki, and Kd.
The output of the control can enter to the desired point by adjusting the parameter value of Kp, Ki, Kd within the control until the measured value will match the desired value.
In this seminar, the principle of PID control related to motor speed controller is presented.