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:
Feb. 07, 2006
Filed:
Aug. 25, 2004
Applicants:
Mitsunori Kawashima, Wako, JP;
Masato Yuda, Wako, JP;
Hiroaki Ishigaki, Haga-Machi, JP;
Inventors:
Assignee:
Honda Motor Co., Ltd., Minato-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a failure detection system for an electric power steering system. The system detects ON failure of one of first to fourth switching elements of an H-bridge circuit of the electric power steering system. The system detects ON failure by measuring the value of the current and the fluctuation in the value of the current. Therefore, the system can detect ON failures even when the value of the current is within normal ranges.