Designing an optimal Fuzzy-PID controller for speed tracking of stepper motor

This paper presents an intelligent strategy, based on the combination of the fuzzy logic and imperialist competitive algorithm (ICA), to cope the problem of speed tracking in stepper motor. An optimal Fuzzy-PID controller (FPID), on the other hand, is designed by using ICA and its performance is examined under different circumstances. Considering the results of simulations, done in MATLAB Simulink, expresses the merits of the proposed methodology in offering an acceptable flexibility and valid performance in dealing with nonlinear and uncertain systems.