The structure diagram of three-phase reluctance stepping motor model is shown in the overview diagram. Its stator and rotor cores are made of silicon steel sheets. There are six magnetic poles on the stator, each two opposite magnetic poles are wound with the same phase winding, and the three-phase winding is connected into a star as the control winding; There is no winding on the rotor core, only four teeth, and the tooth width is equal to the stator pole shoe width.

Reactive stepping motors are the main step motors used in China. The operation performance of the stepping motor is closely related to the control mode. From its control mode, the stepping motor control system can be divided into the following three categories: open-loop control system, closed-loop control system, and semi-closed-loop control system. Semi-closed loop control systems are generally classified as open-loop or closed-loop systems in practical applications.