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. 25, 2011
Filed:
Nov. 02, 2006
Hideyuki Tanaka, Tokyo, JP;
Takanori Matsunaga, Tokyo, JP;
Masahiko Kurishige, Tokyo, JP;
Takayuki Kifuku, Tokyo, JP;
Hideyuki Tanaka, Tokyo, JP;
Takanori Matsunaga, Tokyo, JP;
Masahiko Kurishige, Tokyo, JP;
Takayuki Kifuku, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
Provided is a vehicular steering apparatus capable of improving a steering feeling and achieving a reduction in cost. The vehicular steering apparatus according to the present invention is equipped with an assist motor for generating an assist torque, a state quantity detector for detecting a steering shaft reaction torque and a road surface reaction torque, and a control unit for calculating a target current value of the assist motor. The control unit includes a friction compensation portion and a return compensation portion, which calculate a friction compensation torque for compensating for the assist torque and a return compensation torque for compensating for the assist torque from the steering shaft reaction torque and the road surface reaction torque respectively. The control unit compensates for an overall friction torque in a steering mechanism and a gradient of the road surface reaction torque, using the friction compensation torque and the return compensation torque.