The fuzzy logic controller, FLC, it is part of the control with artificial intelligence (AI), and
implies obtaining of improved signal wave forms at output and reduction of oscillations (such
as output speed variation, torque variation, current variation for the three phases)
comparatively with the classic control. This paper presents two cases of FLC for exterior
permanent magnet synchronous machines, PMSM,(Ld= Lq), with 25 rules and with 49 rules.
The FLC is developed to have less computational burden, which makes it suitable for real …

This paper presents an application of fuzzy logic to control the speed of a permanent magnet
synchronous machine (PMSM). Based on the analysis of the PMSM transient response and
fuzzy logic, a fuzzy controller is developed. The fuzzy controller generates the variations of
the reference current vector of the PMSM speed control based on the speed error and its
change. The analysis of a sliding mode control is used to tune the fuzzy logic controller. The
results of applying the fuzzy logic controller to a PMSM are compared to those obtained by …