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. 08, 2014
Filed:
Mar. 23, 2012
Mutsumi Matsuura, Kitasaku-gun, JP;
Takaaki Ochiai, Kitasaku-gun, JP;
Mutsumi Matsuura, Kitasaku-gun, JP;
Takaaki Ochiai, Kitasaku-gun, JP;
Mineba Co., Ltd., Kitasaku-Gun, JP;
Abstract
A VR resolver with a shaft angle multiplier of 3× has a rotor corethat is provided with magnetic polesand, which project in a radial direction, and a magnetic pole, which does not project in a radial direction. The VR resolver also has a stator coreprovided with salient polesandthat are wound with a cosine wave detection wire and that are connected. A zero point detecting terminal is led from the cosine wave detection wire between the cosine winding wound portions of the salient polesand. The zero point detecting terminal provides a voltage waveform. By setting a threshold value for the voltage waveform, an absolute angle of the rotor coreis measured.