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:
Feb. 24, 2015
Filed:
Jan. 27, 2011
Fumihiro Morishita, Tochigi-ken, JP;
Takuji Wada, Utsunomiya, JP;
Hiroaki Horii, Utsunomiya, JP;
Hiroki Sagami, Utsunomiya, JP;
Kyoji Hamamoto, Utsunomiya, JP;
Shinji Hironaka, Tochigi-ken, JP;
Fumihiro Morishita, Tochigi-ken, JP;
Takuji Wada, Utsunomiya, JP;
Hiroaki Horii, Utsunomiya, JP;
Hiroki Sagami, Utsunomiya, JP;
Kyoji Hamamoto, Utsunomiya, JP;
Shinji Hironaka, Tochigi-ken, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
Disclosed is an electric power steering device capable of applying a prescribed steering assist force to a steering assembly, even when a torque sensor is out of order and the electric power steering device is in a state of being unable to sense steering torque by the torque sensor. Using an angle of rotation of a rotating element, which is detected by a resolver that serves as a rotating element angle of rotation sensing unit of a motor, a steering angle and a steering angular velocity are estimated, and a prescribed steering assist force is applied to a steering assembly by the motor, on the basis of an estimated steering angle and/or an estimated steering angular velocity.