On Fuzzy Modulator for the PMSM Step Motion Control

Abstract

The paper presents a fuzzy modulator for the PMSM step motion control to modulate the current vector duration to improve the response speed and reduce the torque ripple of the system, on the basis of analyzing the principle of step motion control and introducing the fuzzy logic in. The results of simulation and experiment suggest that the presented approach can cut down the torque ripple and improve the control performance and the positioning precision.