Abstract
This paper presents a new method for determining gains in a DC motor speed control system using PSO algorithm. The DC motor with a speed control system contains 2 feedback loops i.e. back emf loop and speed loop for the controller input. The controller used is the integral (I) controller and proportional-integral (PI) controller. The PSO algorithm is used to obtain the best gains for I controller and PI controller. In this paper, the PSO algorithms are PSO standard, PSO inertia and PSO constriction algorithms. The objective function is based on integral time absolute error (ITAE) criteria. The time response of DC motor with the speed controller obtained by each of PSO algorithm and the speed controller obtained by Ziegler-Nichols (ZN) method are compared. The simulation results show the transient response of the system with I and PI controllers tuned by PSO is better than the system with controller tuned by ZN method. The performance of each PSO algorithm is then qualitatively determined with a boxplot representation and hypothesis testing is performed to determine the performance of 3 pairs of PSO algorithms. The results show that the PSO-co algorithm is a better method to determine parameters of a DC motor speed controller than other PSO algorithms.
Published Version
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