发明授权
- 专利标题: Flux compensated rotational position detector and operating methods therefor
- 专利标题(中): 磁通补偿旋转位置检测器及其操作方法
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申请号: US10396507申请日: 2003-03-26
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公开(公告)号: US07009385B2公开(公告)日: 2006-03-07
- 发明人: Masahiro Kobayashi , Hiroyuki Kujirai
- 申请人: Masahiro Kobayashi , Hiroyuki Kujirai
- 申请人地址: JP Nagano-ken
- 专利权人: Minebea Co., Ltd.
- 当前专利权人: Minebea Co., Ltd.
- 当前专利权人地址: JP Nagano-ken
- 代理机构: Adduci, Mastriani & Schaumberg, LLP
- 优先权: JP2002-089478 20020327
- 主分类号: G01B7/30
- IPC分类号: G01B7/30 ; G01D5/20
摘要:
A flux compensated rotational position detector includes a rotating element having a plurality of magnetic poles extending over its entire periphery, and a fixed element having a plurality of protruding fixed-element magnetic poles with fixed-element magnetic pole teeth opposing the rotating element, and first and second compensating poles disposed on either side of the fixed-element magnetic poles, the first and second compensating poles having respective first and second magnetic pole teeth opposing the rotating element, wherein the fixed element does not form a closed magnetic path around the entire periphery of the rotating element, magnetizing windings are provided on all of the first and second compensating poles and the fixed-element magnetic poles, and sine output and cosine output windings are provided on each of the fixed element magnetic poles. Methods for operating the detector are also described.
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