Stepping motor with detent torque elimination

Details Stepping motor with detent torque elimination Stepping motor with detent torque elimination

1993-02-24

1994-05-03

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310257, H02K 3700, H02K 112

Patent

active

053090519

ABSTRACT:
A stepping motor forms the teeth of the stator so that each have a predetermined pitch in order to eliminate the detent torque. In a stepping motor in which P stator salient poles 1.sub.1, 1.sub.2, . . . 1.sub.p are disposed and, on the surface of each stator salient pole opposed to a rotor 2 whose teeth 4 are disposed at equal pitches .tau..sub.R, k stator teeth 3 are each disposed at equal pitches .tau..sub.S. The stator salient poles 1.sub.1, 1.sub.2, . . . 1.sub.p comprise n sets of poles each differing in phase. The stator teeth 3 are disposed so that their pitch .tau..sub.S =.tau..sub.R.times. {1.+-. 1/(n.times.k)}.

REFERENCES:
patent: 4910475 (1990-03-01), Lin
patent: 4992686 (1991-02-01), Heine et al.

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