The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 2014
Filed:
Jan. 10, 2012
Takashi Ogawa, Osaka, JP;
Yuichi Yoshikawa, Osaka, JP;
Yasuji Echizen, Osaka, JP;
Masahiko Kobayashi, Hyogo, JP;
Masaaki Nishiyama, Osaka, JP;
Takashi Ogawa, Osaka, JP;
Yuichi Yoshikawa, Osaka, JP;
Yasuji Echizen, Osaka, JP;
Masahiko Kobayashi, Hyogo, JP;
Masaaki Nishiyama, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The N(s) turns of a first output winding is divided by a split ratio α into N(s) turns of a lower-layer first output winding and N(s) of an upper-layer first output winding. The lower-layer first output winding is continuously wound around all slots as the undermost layer. A second output winding is continuously wound around all slots over the lower-layer first output winding. An upper-layer first output winding is continuously wound around all slots over the second output winding. The split ratio α is adjusted only in the slots where the detection accuracy decreases. This equalize the contribution of the first output windings and the second output winding to the flux linkage, thereby achieving high angle detection accuracy.