步进电机的结构有好几种，包括可变磁阻 (variable reluctance)、永磁和混合式永磁 (hyb原煤分级筛rid permanent magnet)，永磁步进电机的成本很低，多半用于价格低廉的消费性产品。
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可变磁阻电动机 VRM ; variable reluctance motor pump
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可变磁阻传感器 variable reluctance sensor ; VRS
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这些可变磁阻，磁性传感器是最简单，最经济的形式感的速度。
These variable reluctance, magnetic sensors are the simplest, most economical form of speed sensing.
这些机器或者叫做可变磁阻电机的起源，反映了虚拟现实技术是源自步进电机。
The machines are alternatively known as variable reluctance motors, reflecting the origins of the technology being derived from VR stepper motors.
为原型的实验表明，采用双定子和三相串联磁路的结构，混合可变磁阻电机的转矩与体积的比例较高。
Experiments for the prototype indicate that using the structure of double-stator and three-phase series magnetic circuit, the hybrid variable reluctance motor has higher ratio of torque to volume.
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