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:
Jul. 18, 2006
Filed:
Jul. 13, 2004
Mamoru Sawada, Yokkaichi, JP;
Toshiki Matsumoto, Kariya, JP;
Tsutomu Tashiro, Nagoya, JP;
Mamoru Mabuchi, Kariya, JP;
Takehito Fujii, Anjo, JP;
Motoaki Kataoka, Kariya, JP;
Mamoru Sawada, Yokkaichi, JP;
Toshiki Matsumoto, Kariya, JP;
Tsutomu Tashiro, Nagoya, JP;
Mamoru Mabuchi, Kariya, JP;
Takehito Fujii, Anjo, JP;
Motoaki Kataoka, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
In a power steering apparatus employing an EPS (electrical power steering) motor coupled to a steering mechanism, when vibration of the steering mechanism is produced by twisting of tire rubber due to changes in steering angle, resultant pulsation of the drive current of the EPS motor are suppressed by adding to the drive current a current that is of equal frequency and opposite phase to the pulsation. Vibration of the EPS motor shaft, and resultant vibration of the steering wheel and vehicle body, are thereby effectively suppressed.