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:
Apr. 29, 2014
Filed:
Jan. 05, 2012
Hiroki Sagami, Utsunomiya, JP;
Kyoji Hamamoto, Utsunomiya, JP;
Hiroaki Horii, Utsunomiya, JP;
Fumihiro Morishita, Tochigi-ken, JP;
Takuji Wada, Utsunomiya, JP;
Shinji Hironaka, Tochigi-ken, JP;
Takashi Kuribayashi, Tochigi-ken, JP;
Hiroki Sagami, Utsunomiya, JP;
Kyoji Hamamoto, Utsunomiya, JP;
Hiroaki Horii, Utsunomiya, JP;
Fumihiro Morishita, Tochigi-ken, JP;
Takuji Wada, Utsunomiya, JP;
Shinji Hironaka, Tochigi-ken, JP;
Takashi Kuribayashi, Tochigi-ken, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
An electric power steering apparatus detects, as an abnormal phase, a phase other than a combination of phases whose interphase voltage is of nearly zero volts if a q-axis current is equal to or smaller than a first threshold value though a q-axis voltage is being applied. Alternatively, the electric power steering apparatus calculates a base electric angle at which the q-axis current is equal to or smaller than a third threshold value though the q-axis voltage is being applied, and determines an abnormal phase based on the base electric angle.