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:
Mar. 07, 2006
Filed:
Oct. 30, 2003
Terutaka Tamaizumi, Aichi, JP;
Yoshinobu Shimizu, Osaka, JP;
Shinya Aono, Aichi, JP;
Akihiro Nishiyama, Aichi, JP;
Takanobu Takamatsu, Osaka, JP;
Masayuki Kita, Aichi, JP;
Tomoyuki Yamauchi, Aichi, JP;
Terutaka Tamaizumi, Aichi, JP;
Yoshinobu Shimizu, Osaka, JP;
Shinya Aono, Aichi, JP;
Akihiro Nishiyama, Aichi, JP;
Takanobu Takamatsu, Osaka, JP;
Masayuki Kita, Aichi, JP;
Tomoyuki Yamauchi, Aichi, JP;
Koyo Seiko Co., Ltd., Osaka, JP;
Abstract
The present invention provides an electric power steering device enabled to compensate for the influence of the inertia of a steering-assisting-force generating motor on steering with accurate timing even when a steering direction is reversed at high speed. Based on steering torque and a rotation angular speed of a steering-assisting-force generating motor, a steering angular acceleration correspondence value is obtained. The device has means for regulating a gain, which is multiplied to a change acceleration of the steering torque. The motor is controlled so that the steering assisting force is corrected according to a motor output correction value obtained on the basis of the relation between the motor output correction value and the steering angular acceleration correspondence value, which is preliminarily determined and stored in such a way as to compensate for the influence of the inertia on steering, and the obtained steering angular acceleration correspondence value.