Speed control in PMSM drive with non-stiff load and unknown parameters using PI- and fuzzy adaptive PID controllers

This paper deals with the use of PID-type fuzzy adaptive controller in the application of speed control of real two-mass servo-drive system and comparing with the conventional PI controller. For simulation and tuning of conventional PI controller's coefficients identification of object parameters is performed. To identify unknown mechanical parameters in this system “motor-device” experimental data are used. Simulation and experiment results demonstrate that the fuzzy adaptive PID controller effectively improves response time and accuracy compared with the conventional PI controller.