GWO/PID Approach for Optimal Control of DC Motor

The work deals with application of Grey Wolf Optimization (GWO) for optimal speed control of DC motor. GWO is a bio inspired heuristic algorithm. Here, integral of time multiplied absolute error (ITAE) has been taken as an objective function for tuning the parameters of PID controller by GWO. Comparison of proposed GWO/PID scheme with other existing techniques has also been shown. It has been observed that proposed GWO/PID approach with ITAE as an objective function gives comparable overshoot and other parameters such as; settling and rise times are less when compared with existing approaches in the literature. The robustness and comparative analysis of proposed GWO/PID approach has also been carried out with variations in the parameters of DC motor.