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. 15, 2012
Filed:
Dec. 26, 2007
Shoji Koyama, Okazaki, JP;
Ryohei Hayama, Nabari, JP;
Tomoyasu Kada, Kaizuka, JP;
Jtekt Corporation, Osaka-shi, JP;
Abstract
It is one object of the present invention to provide a steering device for a vehicle improving a resolution of detecting a steering reaction force thereby to control precisely a reaction actuator and to improve a steering feeling. The steering device for the vehicle is equipped with a reaction actuatoracting a steering reaction force on a steering wheel. This device further includes a steering angle sensordetecting a steering angle δh of the steering wheel, a controllercontrolling the reaction actuatoraccording to the steering angle δh, a torque sensordetecting a steering torque Th acted on the steering wheel. The controllercontrols in a feedback way the reaction actuatorbased on the steering torque Th in a predetermined range including a middle point of the steering angle. The controllerdrives, in a open-loop way without feed-backing the steering torque Th, the reaction actuatorout of the predetermined range of the steering angle δh.