Stepping motor

Details Stepping motor Stepping motor

1980-05-21

1982-05-18

Miller, J. D.

Electrical generator or motor structure

Dynamoelectric

Rotary

310112, H02K 3700

Patent

active

043307248

ABSTRACT:
A stepping motor with a first and a coaxially disposed second stator section. The stator sections are axially separated by a coaxially disposed permanent-magnetic ring. On the inside, each stator section terminates in two coaxially disposed annular systems of teeth. The systems of teeth of each stator section have been shifted nominally by 1/2 tooth pitch relative to the rotor teeth and the systems situated on the outside relative to the permanent magnetic ring as well as the systems of teeth situated on the inside relative to the permanent magnetic ring exhibit a nominal mutual shift relative to the rotor teeth of 1/4 tooth pitch. Stepping angle errors in this stepping motor can now be eliminated to a high degree by symmetrically correcting the displacement of the outer systems of teeth relative to each other and/or the displacement of the inner systems of teeth relative to each other.

REFERENCES:
patent: 4206374 (1980-06-01), Goddijn

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