The angular displacement can be controlled by controlling the number of pulses, so as to achieve the purpose of accurate positioning; at the same time, the speed and acceleration of the motor rotation can be controlled by controlling the pulse frequency, so as to achieve the purpose of speed regulation. (Video transmission gate) A stepper motor is an induction motor. Its working principle is to use an electronic circuit, that is, a driver, to convert direct current into a multi-phase sequential control current for time-sharing power supply. Although a stepper motor is powered by DC current, it cannot be understood as a DC motor. A DC motor is a power motor that converts DC electrical energy into mechanical energy, while a stepper motor is an open-loop control motor that converts electrical pulse signals into angular displacement.