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. 02, 2014
Filed:
Feb. 02, 2012
Applicants:
Kozo Niimi, Kariya, JP;
Yuji Kariatsumari, Yamatotakada, JP;
Inventors:
Kozo Niimi, Kariya, JP;
Yuji Kariatsumari, Yamatotakada, JP;
Assignee:
JTEKT Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 23/00 (2006.01); H02P 21/00 (2006.01); H02P 7/00 (2006.01); B62D 5/04 (2006.01);
U.S. Cl.
CPC ...
B62D 5/04 (2013.01);
Abstract
An electric power steering system calculates a motor resistance Rm using a resistance map, and calculates an estimated inducted voltage based on a motor current and a motor voltage. If the estimated induced voltage is determined as being equal to or smaller than a determination value that is set in accordance with the current level, the electric power steering system calculates a motor resistance (estimated motor resistance Rma) and updates the resistance map based on the estimated motor resistance Rma.