The stepper servo is a stepper motor integrated with an encoder, which can feed back the motor’s movement position, torque and speed information, and other parts are basically the same as ordinary stepper motors.

Speaking of a stepper motor, it is a motor that converts electrical pulse signals into mechanical motion, and its working principle is based on magnetic field interaction and current control.

A stepper motor usually consists of two parts, a stator and a rotor.

There are several coils on the stator, and each coil is called a phase.

There are several poles on the rotor, and each pole is also called a phase.

When current passes through the coils of the stator, a magnetic field is generated in the stator, which interacts with the magnetic poles on the rotor, causing the rotor to rotate.

The rotation of the stepper motor is carried out according to a certain step size.

Every time an electric pulse signal is received, it will rotate a step size, and the rotor will rotate a fixed angle.

Therefore, stepper motors can control the rotation angle and speed very precisely.

Different types of stepper motors have different working principles, such as single-phase, two-phase, three-phase. However, their basic principle is to use current to control the interaction of magnetic fields to achieve mechanical movement.

Two-phase stepper motors are the most common, with a step angle of 1.8°, and the rotor rotates once every time it receives 200 pulses.