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. 15, 2014
Filed:
Aug. 01, 2012
Tomohiro Nozu, Anjo, JP;
Ryohei Shigeta, Anjo, JP;
Akira Kodama, Chiryu, JP;
Go Nagayama, Toyama, JP;
Yasushi Yagi, Hiroshima, JP;
Daisuke Kofu, Hiroshima, JP;
Akihiro Tatara, Aki-gun Hiroshima, JP;
Tomohiro Nozu, Anjo, JP;
Ryohei Shigeta, Anjo, JP;
Akira Kodama, Chiryu, JP;
Go Nagayama, Toyama, JP;
Yasushi Yagi, Hiroshima, JP;
Daisuke Kofu, Hiroshima, JP;
Akihiro Tatara, Aki-gun Hiroshima, JP;
JTEKT Corporation, Osaka-shi, JP;
Abstract
A road surface frictional coefficient estimation device includes: a first straight travel determination unit configured to determine whether or not a vehicle travels straight based on a rotational speed difference between a plurality of wheels of the vehicle; a second straight travel determination unit configured to determine whether or not the vehicle travels straight based on a steering angle of the vehicle; a selection unit configured to select one of determination results of the first straight travel determination unit and the second straight travel determination unit; and a frictional coefficient estimation unit configured to estimate a frictional coefficient of a road surface on which the vehicle travels when the one of the determination results selected by the selection unit indicates that the vehicle travels straight.