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:
Dec. 20, 2016
Filed:
Dec. 12, 2013
Jtekt Corporation, Osaka-shi, Osaka, JP;
Takeshi Takaki, Shiki-gun, JP;
Yuji Kariatsumari, Kitakatsuragi-gun, JP;
Yoshinobu Shimizu, Sakai, JP;
Yasuyuki Yoshii, Tenri, JP;
JTEKT CORPORATION, Osaka-shi, JP;
Abstract
Sinusoidal signals (S, S) having a phase difference of 120° are output from two magnetic sensors in accordance with rotation of an input shaft. A first rotation angle computation unit computes a rotation angle θ(n) on the basis of output signals S(n), S(n−1), S(n), S(n−1) from the magnetic sensors, which are sampled at two sampling timings. At this time, the first rotation angle computation unit computes the rotation angle θ(n) on the assumption that there are no variations of amplitudes of the output signals (S, S) from each one of the two sensors due to temperature changes between the two sampling timings.