Stepper motor, also known as pulse motor, works based on electromagnetic principles and generates electromagnetic torque through changes in air gap magnetic conductivity. Every time a pulse signal is input, the rotor of the stepper motor will rotate at a fixed angle or move forward one step. The output angular displacement or linear displacement is proportional to the number of input pulses, and the speed is proportional to the pulse frequency. This characteristic makes stepper motors very suitable for application scenarios that require precise control of position and speed.