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:
Jan. 06, 2015
Filed:
Aug. 07, 2009
Hideki Sakai, Susono, JP;
Hideki Sakai, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-Ken, JP;
Abstract
A driver state estimation deviceincludes a steering angle sensordetecting a steering angle of a steering, a steering torque sensordetecting steering torque applied to the steering, and an ECUhaving a steering angle estimation unitand a driver state estimation unit. The steering angle estimation unitis input with a steering angle (steering angle detected value) MA detected by the steering angle sensorand steering torque (steering torque detected value) MT detected by the steering torque sensor, determines whether the steering angle detected value MA is 0 or not, when the steering angle detected value MA is 0, calculates a steering angle estimated value MAest by multiplying the steering torque detected value MT by the gradient of the steering angle (proportionality coefficient) α with respect to the steering torque, and when the steering angle detected value MA is not 0, sets the steering angle detected value MA as the steering angle estimated value MAest.