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. 24, 2009
Filed:
Oct. 29, 2003
Koji Kanda, Okazaki, JP;
Koji Kanda, Okazaki, JP;
Koyo Seiko Co., Ltd., Osaka, JP;
Abstract
A current sensordetects a motor current of a steering motorwhich supplies a steering mechanismwith steering force corresponding to the steering amount applied to a steering wheel. A main controllerextracts component within a predetermined frequency range out of a motor current detected by the current sensor, amplifies the extracted component and drives a reaction force motorin a controlled manner so as to supply the steering wheelwith steering reaction force corresponding to the steering amount applied to the steering wheeland steering reaction force corresponding to a current of the component, which has been extracted and amplified. The vehicle steering apparatus constructed as above can supply steering means with steering reaction force corresponding to component within a predetermined frequency range of a motor current of the steering motor.