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:
Jul. 08, 2008
Filed:
Sep. 02, 2004
Hiroaki Kato, Hekinan, JP;
Minekazu Momiyama, Chiryu, JP;
Yoshiyuki Yasui, Nagoya, JP;
Yuji Muragishi, Nagoya, JP;
Yuzo Imoto, Chita-gun, JP;
Hiroaki Aizawa, Anjo, JP;
Hiroaki Kato, Hekinan, JP;
Minekazu Momiyama, Chiryu, JP;
Yoshiyuki Yasui, Nagoya, JP;
Yuji Muragishi, Nagoya, JP;
Yuzo Imoto, Chita-gun, JP;
Hiroaki Aizawa, Anjo, JP;
Jtekt Corporation, Osaka, JP;
Advics Co., Ltd., Kariya-shi, JP;
Abstract
A grip factor estimating apparatus includes a steering torque detecting unit M, and an assist torque detecting unit M. When a self-aligning torque estimating unit Mestimates self-aligning torque generated in front wheels on the basis of detection result of the detecting unit, the quantity of influence of longitudinal force on self-aligning torque is removed on the basis of longitudinal force acting on the front wheels and estimated by a longitudinal force estimating unit Mand a front wheel slip angle estimated by a front wheel slip angle estimating unit M. A grip factor estimating unit Mestimates the grip factor of the front wheels on the basis of change in self-aligning torque in accordance with the side force.