Under normal movement, it has a fixed number of steps per revolution; When the continuous step movement is done, the rotation speed is strictly corresponding to the frequency of the input pulse, which is not affected by voltage fluctuations and load changes. Because the stepper motor directly accepts the digital control, it is especially suitable for microcomputer control.
The stepper motor is a four-phase stepper motor with unipolar DC power supply. As long as each phase winding of the stepper motor is energized according to the appropriate time sequence, the stepper motor can be made to step rotation.