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:
May. 24, 2011
Filed:
Aug. 01, 2006
Hisayoshi Sugihara, Aichi-ken, JP;
Yutaka Nonomura, Nagoya, JP;
Motohiro Fujiyoshi, Seto, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi-gun, Aichi-ken, JP;
Abstract
An angular velocity detected by an angular velocity sensor () is integrated by a small angle matrix calculator () and a matrix adding calculator (), and then restored as a posture angle (angular velocity posture angle) by a matrix posture angle calculator (). A posture matrix is calculated by a tilt angle calculator () and an acceleration matrix calculator () and an acceleration detected by an acceleration sensor () is restored as a posture angle (acceleration posture angle) by a matrix posture angle calculator (). Low pass filters () each extract a low range component, the difference between the two is calculated by a differencer (), and only the drift amount is extracted. A subtracter () removes the drift amount from the angular velocity posture angle and the result is output from an output device (). In addition, a posture angle matrix calculator () converts the result to a posture matrix, which it feeds back to the matrix adding calculator ().