Abstract: stepper motor for rotating speed and electromagnetic speed step by step, the speed of the rotor and the stator rotating magnetic field named the same, in the continuous application of people much promotion and has been improved, especially on research and development and the design of efficient motor now. In this paper, from the following several aspects to meet stepper motor. A and characteristics of the stepper motor in the practical application has many characteristics, one of the biggest characteristic is steady state, when it is in the rotational speed of the rotor has a constant relationship with the grid frequency, if the grid frequency have not changed, then the speed of the motor has been a constant, but didn't have anything to do with the size of the load. 2, operation step motor operation mode is not the only in the practical application of fixed, there are mainly three kinds of operation modes, respectively, motor, generator operation, compensation machine running operation of the three, the generator operation is the main way to run. Three, the application scope of step motor with its variety of operation mode, with a variety of applications, is one of the most common places of large generators, and in large generator applications, has a good application effect. The above content is about the introduction of some basic knowledge of stepping motor, it is a safe, reliable, stable performance of the motor, people can rest assured the choose and buy and use. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone: