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. 05, 2011
Filed:
Jan. 11, 2008
Kenichi Mori, Sagamihara, JP;
Junji Tsutsumi, Fujisawa, JP;
Toshiaki Kasahara, Kanagawa, JP;
Yuusuke Katou, Kawasaki, JP;
Kenichi Mori, Sagamihara, JP;
Junji Tsutsumi, Fujisawa, JP;
Toshiaki Kasahara, Kanagawa, JP;
Yuusuke Katou, Kawasaki, JP;
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Abstract
In a vehicle steering device and control method, a selectively engageable clutch is positioned between a steering wheel and a turning mechanism for turning at least one wheel. The clutch has an engaged position where the steering wheel is mechanically connected to the turning mechanism and a disengaged position where the steering wheel is mechanically separated from the turning mechanism for steer-by-wire control. During steer-by-wire control, a reaction force actuator applies a force to the steering wheel, and a turning actuator applies a torque to the turning mechanism. To prevent erroneous clutch engagement caused by an increase in relative angular acceleration between the steering angle and the turning angle, a controller detects an operating condition corresponding to a risk of erroneous clutch engagement and controls at least one of the turning actuator and the reaction force actuator to reduce the relative angular acceleration.