DC MOTOR CONTROL USING FIRST-ORDER COMPENSATOR AND PD-PI CONTROLLER COMPARED WITH A PI CONTROLLER

This paper investigates the optimal control of an armature-controlled DC motor through the use of a compensator from the second generation of control compensators and a controller from the second generation of PID controllers. The proposed compensator is an I-first order compensator and the proposed controller is a PD-PI controller. The compensator and controller are tuned for good control system performance in tracking a specific desired motor speed. The performance of the control system with the proposed compensators is compared with PI controller from the first generation of PID controllers to control the same motor-speed process. The DC motor speed is identified as a controlled process experimentally for two possible transfer function models. The characteristics of the step time responses are compared with those of the conventional PI controller. The best compensator/controller for the control of the DC motor is assigned and compared with other controllers available in the literature.