How to Correctly Select a Stepper Motor Driver

Determine the required torque: Static torque is one of the main parameters for selecting a stepper motor. High-torque motors are required for heavy loads. Higher torque also means larger motors.

Determine the motor's operating speed: For high-speed requirements, choose a motor with larger phase current and lower inductance to increase power input. Also, use a higher supply voltage when selecting the driver.

Select the motor's mounting specifications: Such as 57, 86, 110, etc., mainly related to torque requirements.

Determine positioning accuracy and vibration requirements: Determine whether microstepping is needed and how many microsteps are required.

Select the driver based on the motor's current, microstepping, and supply voltage.

A stepper motor is an open-loop control element that converts electrical pulse signals into angular or linear displacement. There are three main types in its construction: reactive, permanent magnet, and hybrid.

A stepper motor driver is an actuator that converts electrical pulses into angular displacement. When a stepper driver receives a pulse signal, it drives the stepper motor to rotate a fixed angle (called the "step angle") in a set direction. Its rotation occurs step by step at fixed angles.

The angular displacement is controlled by controlling the number of pulses, thus achieving accurate positioning. Simultaneously, the motor's speed and acceleration are controlled by controlling the pulse frequency, thus achieving speed regulation and positioning.