The rotor inside the servo motor is a permanent magnet, and the U/V/W three-phase electricity controlled by the driver forms an electromagnetic field, and the rotor rotates under the action of this magnetic field, and at the same time, the encoder of the motor feeds back the signal to the driver, and the driver adjusts the angle of rotation of the rotor according to the comparison between the feedback value and the target value. The accuracy of the servo motor depends on the accuracy of the encoder (number of lines).
