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:
Aug. 05, 2014
Filed:
Nov. 16, 2010
Yoshihiro Oniwa, Utsunomiya, JP;
Yasuo Shimizu, Shimotsuke, JP;
Shigeru Yamawaki, Tochigi-ken, JP;
Kazushige Sugamata, Utsunomiya, JP;
Atsuhiko Yoneda, Utsunomiya, JP;
Yoshihiro Oniwa, Utsunomiya, JP;
Yasuo Shimizu, Shimotsuke, JP;
Shigeru Yamawaki, Tochigi-ken, JP;
Kazushige Sugamata, Utsunomiya, JP;
Atsuhiko Yoneda, Utsunomiya, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
An electric power steering device wherein mechanical friction is electrically provided. A steering torque value is detected by a steering torque sensor according to the operation of a steering wheel. An assist current value is calculated by an assist control section on the basis of the steering torque value. A target current value based on the assist current value is determined. For providing friction to the operation of the steering wheel, a friction control section and a friction torque value/current value conversion section generate a corrected steering torque value. A second corrected target current value is created by correcting a first corrected target current value by a friction current value. The corrected steering torque value is obtained by correcting the steering torque value by a friction torque value. The target current value is generated, resulting in a motor being subjected to driving control.