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. 08, 2005
Filed:
Sep. 25, 2003
Hideyuki Tanaka, Tokyo, JP;
Masahiko Kurishige, Tokyo, JP;
Noriyuki Inoue, Tokyo, JP;
Kazumichi Tsutsumi, Tokyo, JP;
Shigeki Ohtagaki, Tokyo, JP;
Hideyuki Tanaka, Tokyo, JP;
Masahiko Kurishige, Tokyo, JP;
Noriyuki Inoue, Tokyo, JP;
Kazumichi Tsutsumi, Tokyo, JP;
Shigeki Ohtagaki, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A road surface reaction torque detector has a low-pass filter element whose time constant is determined in accordance with a vehicle speed that is detected by a vehicle steed detector and a motor rotation speed that is detected by a motor rotation speed detector. A road surface reaction torque estimation value is obtained in such a manner that the road surface reaction torque detector performs low-pass filter processing on steering shaft reaction torque signal that is outputted by a steering shaft reaction torque signal outputting means. As a result, an accuracy of estimation of road surface reaction torque is improved.