Permanent magnet type three-phase stepping motor

Details Permanent magnet type three-phase stepping motor Permanent magnet type three-phase stepping motor

2005-06-07

2005-06-07

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S049030, C310S180000, C310S254100, C310S261100

Reexamination Certificate

active

06903476

ABSTRACT:
A permanent magnet type three-phase stepping motor that is simple in construction, with vibration, a reduced unbalance force in the radial direction, and high torque that can be manufactured at a low cost is disclosed. The permanent magnet type three-phase stepping motor has a stator having 3L pieces of stator pole and a rotor having a permanent magnet magnetized so as to form a plurality (Nr) of N and S pole pairs, wherein a condition of 0.3≦{(Nr/π) (Ws+Wr)/(Ds+Dr)}≦0.5 is established, where L is an integer not less than 1, Nr is L (3n±1), n is an integer not less than 1, Da is an inner diameter of the stator, Dr is an outer diameter of the rotor, Ws is a width of the stator pole tooth, and Wr is a width of the rotor tooth.

REFERENCES:
patent: 3866104 (1975-02-01), Heine
patent: 4234808 (1980-11-01), Geppert et al.
patent: 4528473 (1985-07-01), Tezuka
patent: 4672253 (1987-06-01), Tajima et al.
patent: 4983867 (1991-01-01), Sakamoto
patent: 5289064 (1994-02-01), Sakamoto
patent: 5309051 (1994-05-01), Kobori
patent: 5708310 (1998-01-01), Sakamoto et al.
patent: 6160330 (2000-12-01), Sakamoto
patent: 54099910 (1979-08-01), None
patent: 61069360 (1986-04-01), None
patent: 03212149 (1991-09-01), None
patent: 06038488 (1994-02-01), None
patent: 07123685 (1995-05-01), None
patent: 0 993 102 (2000-04-01), None
patent: 111233 (1993-03-01), None
An Optimized Module-type Hybrid Stepper Motor for Spacecraft Solar Array Drive, K.R. Rajagopal, et al. 7803-3773-5/97/$10.00 © 1997 IEEE (7 pgs).
Characteristics Of Permanent-Magnet Type 3-Phase Stepping Motor, Akira Tozune and Masafumi Sakamoto, 0-7803-3008-0/95 $4.00 © 1995 IEEE, pp. 748-755.
High Resolution Hybrid Stepper Motor With Pole Redundancy For Space Application, R. K. Rajagopal, et al. XP-002227569, pp. 705-710.
Optimierte Magnete Fur Hybridschrittmotoren, Eberhard Gollhardt, Sommerda, XP-000846999, F&M 106 (1998) 7-8 © Carl Hanser Verlag, Munchen, pp. 503-506.

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