Synchronous or stepping motor with equal-torque stepping

Details Synchronous or stepping motor with equal-torque stepping Synchronous or stepping motor with equal-torque stepping

1985-12-31

1987-06-09

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310154, 310256, 310261, H02K 3702, H02K 3710

Patent

active

046722475

ABSTRACT:
A hybrid stepper motor having two alternately excited magnetic systems, one providing positions of 0.degree. and 180.degree., and the other positions of 90.degree. and 270.degree.. To minimize position offset due to unequal flux through the two air gaps of the unexcited system, a nonmagnetic space is provided to reduce the relative difference in reluctance between the magnetic paths which include the two air gaps of the unexcited magnetic system.

REFERENCES:
patent: 3204136 (1965-08-01), Kaiwa et al.
patent: 3206623 (1965-09-01), Snowdon
patent: 3293459 (1966-12-01), Kreuter et al.
patent: 3757147 (1973-09-01), Lyman, Jr.
patent: 3801842 (1974-04-01), Touchman
patent: 3978356 (1976-08-01), Spiesberger
patent: 4206374 (1980-06-01), Goddijn
patent: 4306164 (1981-12-01), Itoh et al.

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