The role of stepper motor controller and driver

Update:06 Feb 2021

What is the difference between a stepper motor controller and a driver? Here is an introduction:

The stepper motor controller is an electronic product that can send out an average pulse signal. After the signal sent by it enters the stepper motor driver, it will be converted into the strong current signal required by the stepper motor by the driver to drive the stepper motor to run.
Stepper motors have a wide range of applications in control systems. It can convert the pulse signal into angular displacement, and can be used as an electromagnetic brake wheel, electromagnetic differentiator, or angular displacement generator. The driver says that it receives a pulse signal. Every time it receives a pulse, the stepper motor controller will drive the motor to rotate through a fixed angle. Because of this feature, stepper motors are widely used in various industries today.

Stepper motor driver is an actuator that converts electrical pulses into angular displacement. When the stepper driver receives a pulse signal, it drives the stepper motor to rotate a fixed angle (called "step angle") in the set direction, and its rotation runs step by step at a fixed angle. 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 and positioning. The principle of the stepper motor driver uses a unipolar DC power supply. As long as each phase winding of the stepper motor is energized according to the appropriate sequence, the stepper motor can be rotated step by step.

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