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:
May. 02, 2023
Filed:
May. 28, 2019
Applicant:
Denso Corporation, Kariya, JP;
Inventors:
Toshihiro Fujita, Kariya, JP;
Nobuyori Nakajima, Kariya, JP;
Masaya Taki, Kariya, JP;
Takahiro Suzuki, Kariya, JP;
Assignee:
DENSO CORPORATION, Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D 5/244 (2006.01); B62D 5/04 (2006.01); B62D 15/02 (2006.01);
U.S. Cl.
CPC ...
G01D 5/2449 (2013.01); B62D 5/0412 (2013.01); B62D 5/0481 (2013.01); B62D 15/0235 (2013.01); G01D 5/2448 (2013.01); G01D 2205/26 (2021.05);
Abstract
An electric power steering apparatus has a rotation detection device that includes a sensor section that detects a rotation of a motor and outputs a mechanical angle and a count value, and a signal obtainer that obtains the mechanical angle and the count value from the sensor section. The rotation detection device also includes an absolute angle calculator that calculates an absolute angle based on the mechanical angle and the count value and a storage area for storing a reference value that is used for correcting calculation errors in the absolute angle.