Design and comparative study of PID controller tuning method from IMC tuned 2-DOF pole placement parameter structure for the DC motor speed control application

All the closed loop control system requires the controller for improvement of transient response of the error signal. Though the tuning of PID controller in real time is bit difficult and moreover it lacks the disturbance rejection capability. In order to compensate these internal design problems, internal model control (IMC) based tuning approach has been developed. The analytical method based on IMC principle for the design of PID controller is also developed. The IMC has a single tuning parameter to adjust the performance and robustness of the controller. The tuning method is very efficient in controlling the overshoot, stability and the dynamics of the speed-control system of the DC motor. The resulting structure of the control system is capable of controlling a fast dynamic process by integral control, which results in a striking improvement in performance.