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. 15, 2005
Filed:
Feb. 25, 2004
Akihiro Nishiyama, Okazaki, JP;
Yoshinobu Shimizu, Sakai, JP;
Akihiro Nishiyama, Okazaki, JP;
Yoshinobu Shimizu, Sakai, JP;
Koyo Seiko Co., Ltd., Osaka, JP;
Abstract
An electric power steering apparatus for performing steering assist. The apparatus is provided with an operation amount sensor for sensing an operation amount of an operation member for steering a motor vehicle; a reference assist characteristics setting section for setting reference assist characteristics; and a motor driving target value setting section for setting a motor driving target value in accordance with a corrected assist characteristics obtained by shifting the reference assist characteristics along the axis of coordinates of the operation amount. The apparatus is further provided with a shifting amount setting section for setting, when forward stroke steering is done, the shifting amount to zero, while setting, when return stroke steering is done, the shifting amount to a value at which corrected assist characteristics is obtained in which the absolute value of the motor driving target value corresponding to the operation amount is increased.