Study of Discrete PID Controller for DC Motor Speed Control Using MATLAB

DC motors are known for simple design and consistency are used for control area section of the industry. In many variable speed systems, it is commonly used where wide speed ranges are required. The conventional controller is not compatible with computer controller. To overcome the short falling faced with conventional controller, a simple discrete PID controller designed for the speed control of DC motor. Advantage of discrete controller simple in its design and easily interface with computer system to access the control action. The dynamics of the system is calculated and controller parameters are obtained by root locus method. This research paper emphasizes the design of a simple digital control system that combines a discrete Proportional Integral Derivative (PID) controller with Direct current (DC) motor. The complete simulation is carried out with MATLAB / SIMULINK software.