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There are many kinds of motors, stepper motor is our more commonly used, it can control the speed and accurate positioning control, without the application of feedback control loop. It is often used in office automation equipment, medical machinery, metrology verification equipment, etc. So how do stepper motors work? What is the classification and characteristics?

I. The principle of stepper motor

Stepping motor is a kind of motor that uses electromagnetic principle to convert pulse signal into linear or angular displacement. Every time when electric spark is generated, the motor will rotate a perspective, thus pushing the mechanical equipment to move a distance.

Second, the classification of stepper motors

According to the frequency classification of speed switching power supply, it can be divided into synchronous motor and asynchronous motor. Stepper motor belongs to synchronous motor with DC drive, but it can’t be driven by DC or AC switching power supply immediately, so it must be configured with controller to use. Stepper motors require a drive circuit for operation, which is the same as brushless DC motors. Brushless DC motors use a drive circuit that connects the motor stator to the DC power supply.

Stepper motor characteristics

The basic characteristics of stepper motors include the characteristics of the static data of the motor and dynamic data characteristics, the characteristics of the motor start and the motor braking system. When the stepper motor solenoid coil is energized, the correlation between the rotor electromagnetic induction torque of the load motor, and the output power angle of the motor rotor is called the angle of view, which is the static data characteristics of the motor.

The above is the working principle of stepper motor, and its classification and characteristics, master these basic knowledge, in order to better use the stepper motor.

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