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:
Mar. 20, 2012
Filed:
Oct. 01, 2008
Daiji Watanabe, Chiryu, JP;
Tomoyuki Hori, Handa, JP;
Motoaki Kataoka, Kariya, JP;
Shuji Kuramitsu, Kariya, JP;
Takehito Fujii, Anjo, JP;
Daiji Watanabe, Chiryu, JP;
Tomoyuki Hori, Handa, JP;
Motoaki Kataoka, Kariya, JP;
Shuji Kuramitsu, Kariya, JP;
Takehito Fujii, Anjo, JP;
Denso Corporation, Kariya, JP;
Abstract
A control unit estimates reverse transfer torque transferred from tires to a steering wheel and calculates an assist gain based on the reverse transfer torque. The control unit calculates basic assist torque demand by multiplying torsion torque detected by a torque sensor by the assist gain. The control unit further calculates assist torque command by adding compensation for stabilization. Since the assist gain is determined based on the reverse transfer torque, actual assist torque is generated in accordance with the force transferred from the road surface. Thus, a driver can operate the steering wheel while feeling the force from the road surface.