Application of Bio geography based Fractional order PID controller in DC motor drive speed control

摘要

This paper presents the mathematical model of chopper fed DC motor drive containing both speed and current control loops. The model is simulated with Integer Order PID controller and Fractional Order PID (FOPID) controller. The time domain characteristics of motor like peak overshoot, rise time and settling time are found to be improved in presence of FOPID controller. Optimization techniques namely Particle Swarm Optimization (PSO) and Bio Geography Based Optimization (BBO) are implemented on the proposed model for both the controllers and it has been observed that the speed control is more efficient when optimized with BBO compared to PSO with improvement in time domain specifications of DC motor. Simulation is carried out in MATLAB/SIMULINK environment.