Let’s focus and get back to help Peter
To get back on topic: I’d love to answer this if I could, but unfortunately I know nothing about steppers. If they were BLDCs, pole pairs * 1 electrical revolution would give you a full turn of the motor.
I think I just found the answer myself - coming from this
document (very good explanation of FOC for BLDCs, by the way) to that
document about FOC for steppers, where I read:
…Step motors are usually constructed with 1.8 mechanical degrees per full step (90 electrical degrees). So this means a 1.8 degree stepper has 200 full steps per mechanical rotation. In addition to 1.8 degree step motors, other configurations exist such as .9 degree and 7.2 degrees…
So a 1.8 degree stepper needs one full step for 90 electrical degrees and thus four full steps for 360 el. degrees. For one physical revolution you need 50 electrical revolutions. Or in other works: the pole pair number of 50 tells you the ratio of electrical to physical revolutions. Or you take the 200steps/round and divide them by four.
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