Learn Stepper motor Types by construction.
There are 3 types of stepper motor.
- Permanent Magnet Stepper Motor: This motor has a permanent magnet rotor. It is driven by the stators windings. The magnet creates opposite polarity poles compared to the poles of the rotor which propels the rotor.
- Variable Reluctant Stepper Motor: It uses a non-magnetic soft iron rotor. The rotor has teeth that are offset from the stator. When the windings are active, the rotor moves respectively so that it has a minimum gap between the stator and the teeth of the rotor.
- Hybrid Synchronous Motor: It is combination of the previous two stepper motors. It has a permanent magnet toothed rotor and also a tooted stator. And the rotor has two sections, opposite in polarity. It has 8 poles on the stator that are activated by two windings. If we activate the first winding, we will magnetize 4 poles of which two of them will have South polarity and two of them will be North polarity.