There are three basic types of step motors: variable reluctance, permanent magnet and hybrid. A hybrid step motor is a simple low cost means of providing good motion performance. Step motors are electromechanical devices that work by dividing shaft rotation into discrete distances called steps. Basically, they are brushless motors which include permanent magnet variable reluctance and hybrid types. Most step motors are hybrids and feature 200 steps per revolution (1.8 degrees). The magnetic structure of the motor is designed to be incremental in nature i.e one pulse to the motor causes the armature to move one complete step. At power up, a hybrid step motor could rotate up to ±3.6 degrees in either direction due to the rotor having 200 natural detent positions….
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Tags: Step Motor, DC Step Motor, Stepper Motor, BLDC Motor, Automation, Motion Control