Design and implementation of adaptive fuzzy‐RST digital speed control of PMSM drive

This research focuses on the speed control design of permanent magnet synchronous motors (PMSMs) drive system. The purpose is to develop and compare advanced control strategies: RST digital (RSTD) control and adaptive fuzzy‐RST digital (AFRSTD) control. The three control schemes proposed, synthesized, and implemented in experimental test bench in order to be evaluated and compared are: conventional PI controller, RSTD controller, and AFRSTD controller based on the proposed fuzzy system which has to adjust the RSTD polynomial coefficients online using gain scheduling technique. The objective is to improve the performances of the PMSM drive system, in order to obtain high dynamic response, an efficiency of external disturbance rejection, and considerable control robustness against parameter variations. The experimental test bench is based on a dSPACE1104 board with a 1.1‐kW PMSM supplied by 10‐kHz space vector pulse width modulation (SVPWM) current regulated inverter used as a power amplifier consisted of 300 V, 5‐A IGBT, and Matlab/Simulink environment. Experimental results confirm that the AFRSTD controller presents better dynamic performances and significant robustness under parameter variation.