Optimal Fractional-Order PID for DC Motor: Comparison Study

This paper presents a comparative study of optimization methods for fractional-order Proportional-Integral-Derivative (FOPID) controller. Those methods are Nelder-Mead, Particle Swarm Optimization (PSO), and genetic algorithm. The FOPID controller needs to regulate the step response of the DC motor at the desired state. Numerical simulation and analysis are presented to verify the best method. The PSO gives the best result in term of settling time, robustness, and less overshoot.