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:
Apr. 21, 2015
Filed:
Jun. 21, 2012
Kenichi Nakazato, Tokyo, JP;
Kenichi Nakazato, Tokyo, JP;
Japan Aviation Electronics Industry, Limited, Tokyo, JP;
Abstract
Two excitation coils (excitation A coil, excitation B coil) and two detection coils (detection A coil, detection B coil) are provided. The excitation A coil and the excitation B coil are excited at frequencies that are different from each other. The number of turns of the detection A coil and the detection B coil are respectively set with two sine waves using the number mand mof pole pairs. The number mand mof pole pairs, the number mand mof pole pairs of the excitation A coil and the excitation B coil, and the number mof pole pairs of a rotor are set to have a predetermined relationship. A resolver having redundancy can be realized with small number of coils.