How stepper drivers work

A stepper driver is a device that converts electrical pulse signals into mechanical angular displacement. It achieves precise control of the motor by controlling the current and voltage of the stepper motor. The stepper driver and stepper motor together form a stepper motor drive system, and its performance depends not only on the performance of the stepper motor itself, but also on the quality of the stepper driver.

The working principle of the stepper driver is mainly to control the number of rotation steps of the motor by controlling the on and off of the coil on the stepper motor. When a pulse signal is input, the driver will energize the corresponding coil to generate a magnetic field, which interacts with the magnetic field on the rotor, thereby causing the rotor to produce a step angle displacement. By controlling the number and frequency of pulse signals, precise control of motor speed and angular displacement can be achieved.

Stepper drivers have the characteristics of high precision, good stability, low noise, and small size. At the same time, it also has the advantages of strong programmability, easy control, and high positioning accuracy. These characteristics make stepper drives widely used in the field of automation control.