A stepper motor is a motor that converts an electrical pulse signal into a corresponding angular displacement or linear displacement. For each input pulse signal, the rotor rotates an angle or moves 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. Therefore, the stepper motor is also called a pulse motor.
Stepper motor electrical signal processing method*
The stepper motor is controlled by a pulse signal. For each input pulse signal, the stepper motor moves forward one step. The step angle of the stepper motor rotation is generated by proportional control based on the motor structure. If the order in which the windings are energized is changed, the motor will reverse. Therefore, the rotation of the stepper motor can be controlled by controlling the number of pulses, frequency, and the order in which the windings of each phase of the motor are energized.
Stepper motor and external device interaction method*
The interaction between the stepper motor and the external device is mainly achieved through the drive power supply, which consists of a variable frequency pulse signal source, a pulse distributor, and a pulse amplifier, so that the drive power supply provides pulse current to the motor windings. The operating performance of the stepper motor is determined by the good coordination between the motor and the drive power supply.
Basic classification of stepper motors*
Stepper motors are divided into three basic types: electromechanical, magnetoelectric and linear. Electromechanical stepper motors are composed of iron cores, coils, gear mechanisms, etc.; magnetoelectric stepper motors achieve stepping motion of the rotor through changes in the electromagnetic field.
