发明授权
- 专利标题: Three-phase hybrid type stepping motor
- 专利标题(中): 三相混合式步进电机
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申请号: US10082000申请日: 2002-02-22
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公开(公告)号: US06731027B2公开(公告)日: 2004-05-04
- 发明人: Kazuo Ohnishi , Toshimi Abukawa , Masafumi Sakamoto , Koki Isozaki
- 申请人: Kazuo Ohnishi , Toshimi Abukawa , Masafumi Sakamoto , Koki Isozaki
- 优先权: JP2001/257625 20010828
- 主分类号: H02K3714
- IPC分类号: H02K3714
摘要:
A three-phase hybrid type stepping motor of the present invention comprises a stator, a rotor arranged concentrically with the stator and with an air gap therebetween, six stator poles extending radially and formed at a regular pitch on the inner peripheral surface of an annular stator yoke, each of the stator poles having a plurality of small stator teeth at the tip end thereof, the rotor having two splitted rotor elements and a permanent magnet held therebetween and magnetized so as to form N and S poles in the axial direction thereof, fifty of small rotor teeth formed at a regular pitch on the outer peripheral surface of each of the rotor elements, the two splitted rotor elements being shifted from each other in angular position by a ½ pitch of the small rotor teeth, wherein a permeance distribution of the small stator teeth is a vernier pitch balanced by a six or three order harmonic wave, and a ratio of the width of the pole tooth to the rotor teeth pitch is set to 0.35-0.45.
公开/授权文献
- US20030062779A1 Three-phase hybrid type stepping motor 公开/授权日:2003-04-03