Hello,
I have a movable equipment with a 4 leads AC synchronous motor (24V ac, 50/60Hz, 3 watts, 2rpm), I would like to control it easily as stepper in a school project, I've made the connections and indeed it works with full steps and micro steps (I'm still not 100% if there are errors like missed steps, or if it's harmful in some way to the synchronous motor).
But before going forward, I must be able to explain this clearly.


I've been doing some research, here are the best sources I have until now:

«A stepper motor is a 2 phase AC synchronous motor»
http://venus.ece.ndsu.nodak.edu/~glo...per_Motors.pdf

«Basically it's a synchronous motor with the magnetic field electronically switched to rotate the armature magnet around.»
http://minimaestro.as.arizona.edu/MA...es/step101.pdf

«The AC Synchronous motors provided by Portescap are constructed in the same basic way as the permanent magnet motor except that each coil is supplied with AC voltage with a phase shifting capacitor across the coils.»
http://www.cas.mcmaster.ca/~lawford/...ef/Stepper.pdf

«The SLO-SYN motor is unique in that it has the capability of being operated as an AC synchronous, constant speed motor or as a phase switched DC stepper motor. In either case, it is classified as a permanent magnet inductor motor.»
http://mcsupplyco.com/uploads/images.../SYNCGUIDE.pdf

example of a synchronous motor datasheet:
http://www.hurst-motors.com/document...m_Synch_DD.pdf



I want more, so I would like to learn from other's experience/knowledge.
I've been reading posts about steppers in this forum with excellent technical insights, can you give me a hand in this matter?

Thank you