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:
Oct. 08, 2013
Filed:
Jun. 15, 2011
Yasuhiko Mukai, Anjo, JP;
Hideki Kabune, Nagoya, JP;
Kouichi Nakamura, Toyota, JP;
Masashi Hori, Anjo, JP;
Yasuhiko Mukai, Anjo, JP;
Hideki Kabune, Nagoya, JP;
Kouichi Nakamura, Toyota, JP;
Masashi Hori, Anjo, JP;
Denso Corporation, Kariya, JP;
Nippon Soken, Inc., Nishio, JP;
Abstract
A VGRS device checks whether assist control of an EPS device for assisting steering operation of a steering wheel is being stopped. If the assist control of the EPS device is being stopped, a speed increase ratio is determined so that the rotation angle of the output shaft is less than the rotation angle of the input shaft. A VGRS motor is controlled and driven based on a determined speed increase ratio. Thus, steering operation of the steering wheel can be controlled appropriately so that the steering operation of the steering wheel can be continued with relatively small torque. It is less likely that a driver will erroneously feel that the steering wheel is locked.