关键词: 定位力, 解耦抑制定位力, 耦合抑制定位力, 永磁直线电机

Abstract: The detent force will cause the thrust fluctuation of permanent magnet linear motors ( PMLMs ) , thus affecting the motor performance,so it is very important to study the detent force suppression technology. The mechanism of suppressing the detent force of PMLMs was analyzed,and based on this,the classification methods of decoupling suppression and coupling suppression were proposed. The detent force suppression techniques belonging to decoupling suppression were reviewed,and the techniques for suppressing cogging force and suppressing end force were sorted out respectively. The detent force suppression techniques belonging to coupled suppression are summarized, and the cogging modulation optimization, double-sided tooth dislocation and multi-objective optimization techniques are expounded. By sorting out various detent force suppression techniques,it is found that the existing detent force suppression techniques are in line with the proposed detent force suppression mechanism at the suppression mechanism level. By proposing the mechanism of detent force suppression and starting from two new classification perspectives of decoupling suppression and coupling suppression, the intrinsic connections and differences among numerous suppression techniques have been revealed,which is conducive to an in-depth understanding of the current development status and prospects of detent force suppression technology.

Key words: detent force, decoupling suppression detent force, coupling suppression detent force, permanent magnet linear motors