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:
Dec. 15, 2009
Filed:
Jan. 18, 2007
Ayumu Miyajima, Chiyoda-ku, Tokyo 100-8220, JP;
Makoto Yamakado, Chiyoda-ku, Tokyo 100-8220, JP;
Toru Takahashi, Chiyoda-ku, Tokyo, JP;
Naoshi Yamaguchi, Chiyoda-ku, Tokyo 100-8220, JP;
Yoshitaka Sugiyama, Chiyoda-ku, Tokyo 100-8220, JP;
Ayumu Miyajima, Chiyoda-ku, Tokyo 100-8220, JP;
Makoto Yamakado, Chiyoda-ku, Tokyo 100-8220, JP;
Toru Takahashi, Chiyoda-ku, Tokyo, JP;
Naoshi Yamaguchi, Chiyoda-ku, Tokyo 100-8220, JP;
Yoshitaka Sugiyama, Chiyoda-ku, Tokyo 100-8220, JP;
Other;
Abstract
In a power steering system, the steering state of wheels is detected based on the steering speed to judge as to whether the steering state is in turning of the steering wheel or holding of steering speed is the steering wheels. At the time of the steering operation state, the control is executed so that a difference between a torque command value to an electric motor and the actual torque thereof will become smaller. Also, at the time of the holding operation state, the control is executed so that a difference between the revolution speed of the electric motor and a revolution-speed command value thereto will become smaller.