Stepping motor with a coded pole pattern

Details Stepping motor with a coded pole pattern Stepping motor with a coded pole pattern

2010-10-01

2011-10-11

Barrera, Ramon (Department: 2832)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S049510, C310S049550, C310S156010, C310S156430, C335S306000

Reexamination Certificate

active

08035260

ABSTRACT:
The present invention relates to a stepping motor with a magnet pole pattern having a predetermined pattern around the circumference of the stepping motor. In one embodiment, the pattern relates to a code having a unique single maximum autocorrelation peak over the period of the code. Example codes include Barker codes, PN codes, Kasami codes, Golomb ruler codes, and other codes. In one embodiment, the rotor and stator have a matching pole pattern. In one embodiment, the drive is arranged to align the poles in an inline configuration, alternatively, the drive may be arranged to align the poles in a diagonal configuration. In a further embodiment, one or more sets of poles are provided on the stator, each set being offset rotationally by a partial pole spacing.

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