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:
Sep. 23, 2014
Filed:
Nov. 18, 2010
Takahiro Kojo, Gotenba, JP;
Yoshiaki Tsuchiya, Miyoshi, JP;
Noritsugu Iwazaki, Shuntou-gun, JP;
Tetsuya Morino, Susono, JP;
Takahiro Kojo, Gotenba, JP;
Yoshiaki Tsuchiya, Miyoshi, JP;
Noritsugu Iwazaki, Shuntou-gun, JP;
Tetsuya Morino, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A device for controlling a steering transmission ratio variable device, which is provided with: a motor, which is able to apply a driving force that promotes relative rotation between a steering output shaft coupled to wheels to be turned and a steering input shaft that applies a steering input to the steering output shaft to one of either the steering output shaft or the steering input shaft; a motor driving device that drives the motor; and a locking device that is able to restrict the relative rotation, has a setting device that prescribes a drive voltage the motor and sets a damping gain, which acts in a direction that reduces a rotating speed of the motor, to a value that is larger than a reference value corresponding to an unlocked state during a locking control period in which a state of the steering transmission ratio variable device switches from an unlocked state in which the relative rotation is not restricted to a locked state in which the relative rotation is restricted.