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:
Nov. 09, 2010
Filed:
Mar. 08, 2007
Isao Kezobo, Tokyo, JP;
Noriyuki Inoue, Tokyo, JP;
Chiaki Fujimoto, Tokyo, JP;
Takayuki Kifuku, Tokyo, JP;
Masahiro Kimata, Tokyo, JP;
Kazumichi Tsutsumi, Tokyo, JP;
Isao Kezobo, Tokyo, JP;
Noriyuki Inoue, Tokyo, JP;
Chiaki Fujimoto, Tokyo, JP;
Takayuki Kifuku, Tokyo, JP;
Masahiro Kimata, Tokyo, JP;
Kazumichi Tsutsumi, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An electric power steering apparatus in which, when an abnormality is generated in an electric power steering apparatus, an assist is reduced smaller than normal when a steering burden is estimated to be small; and the assist can be increased to normal and the steering burden can be sufficiently reduced when the steering burden is estimated to be large. When an abnormality is detected, an assist command is set smaller than at a normal time when there is no abnormality in a first range where the steering burden estimated by the steering burden estimation unit is small; the assist command is increased to that at a normal time in a second range where the steering burden estimated by the steering burden estimation unit is larger than the first range; and an assist torque of a motor is controlled in response to the assist command at the abnormal time.