摘要
One of the major challenges in the field of motors is to improve rotation ripples. There are several causes of rotation ripples. This paper focuses on variations of manufacturing of a stator coil and proposes a new technique called DTMM （dynamic multi-coils-motor three-phase matching） based on the conventional NSDEM （noise shaping dynamic element matching）. With DTMM, all the moving elements are shuffled while a single moving element is shuffled with NSDEM. Results show that the proposed system reduces the rotation ripple by 30% compared to the conventional PWM driving technology.
