Stepping motor is an actuator that converts digital pulse signals into angular displacement. That is to say, when the stepper driver receives a pulse signal, it drives the stepper motor to rotate a fixed angle (ie step angle, step angle) in the set direction. You can control the angular displacement by controlling the number of pulses, so as to achieve the purpose of accurate positioning; at the same time, you can control the speed and acceleration of the motor rotation by controlling the pulse frequency, so as to achieve the purpose of speed regulation. Generally, the accuracy of a stepper motor is 3-5% of the step angle, and it does not accumulate.