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:
Jan. 13, 2015
Filed:
Aug. 20, 2010
Takeshi Ueda, Kashiba, JP;
Yoshinobu Shimizu, Sakai, JP;
Takeshi Ueda, Kashiba, JP;
Yoshinobu Shimizu, Sakai, JP;
Jtekt Corporation, Osaka, JP;
Abstract
An output signal V=sin θ is output from a first magnetic sensor and an output signal V=cos(θ+α) is output from a second magnetic sensor. An output signal correction unit in a rotation angle computing device corrects the output signal Vfrom the second magnetic sensor to an output signal V' (=cos θ) so that a positional phase difference (90°+α) between the magnetic sensors and is made equal to a target phase difference of 90°. A rotation angle computing unit computes the rotation angle θ of a rotor based on the corrected signal V′ (=cos θ) and the other output signal V(=sin θ).