Permanent Magnet Motors Animated

Appendix to Stepping Motors Types by Douglas W. Jones

Here is Figure 1.2 in animated form:
Figure 1.2 

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        can handle animated GIFs here

In looking at this figure, note the following:
  1. This 6-pole rotor turns in a direction opposite the rotation of the stator field; a two-pole rotor inside the exact same stator would rotate with the field.

  2. This illustration is based on half-step control, where alternate half steps involve one and two motor windings.

  3. It takes three complete cycles of the control system to turn this 6-pole rotor one revolution. A two-pole rotor would turn a full revolution per control system cycle.