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:
Nov. 02, 2010
Filed:
Nov. 08, 2005
Terutaka Tamaizumi, Okazaki, JP;
Shinya Aono, Okazaki, JP;
Terutaka Tamaizumi, Okazaki, JP;
Shinya Aono, Okazaki, JP;
JTEKT Corporation, Osaka, JP;
Abstract
In an electric power steering apparatus, steering torque of a steering wheel is detected by a torque sensor, and a motorfor generating steering assist power is controlled so that the steering assist power is generated according to a basic assist torque corresponding to the detected steering torque. A correspondence relationship between the steering torque and the basic assist torque is set such that an assist gradient that is a rate of change of the basic assist torque to the steering torque varies according to variation of the steering torque. A correction amount of an output of the motorvaries according to the variation of the assist gradient.