The structure and operation principle of a PM spherical stepper motor are discussed and its configuration parameters are analyzed.
介绍了一种新型永磁球形步进电动机的结构、工作原理，对电机的结构参数进行了深入分析。
By analyzing the geometrical factor of the spherical-harmonic modes, the general rules are proposed for optimizing the configuration of beams.
本文通过分析球谐模的几何因子，提出了光束排布的优化规则。
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