MICROCONTROLLER-BASED STEPPER MOTOR CONTROI BASICS

摘要

Stepper motors are brushless DC motors that rotate in small steps when excited. For example, a stepper motor with 360-step specification rotates only 1° when excited, while the direction of rotation depends on the type of excitation. The excitation is in the form of a pulse, and the motor advances after receiving a pulse. Stepper motors operate in open-loop mode since they can hold the required position without any feedback sensors. Most stepper motors use permanent magnets and operate on the principle of attraction or repulsion between the rotor magnet and stator electromagnets.