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:
Dec. 03, 2019
Filed:
Sep. 06, 2017
Jtekt Corporation, Osaka-shi, Osaka, JP;
Yoshihiro Yamashita, Okazaki, JP;
Hidenori Itamoto, Tajimi, JP;
JTEKT CORPORATION, Osaka, JP;
Abstract
A base current command value is calculated based on a steering torque and a vehicle speed. A desired steering angle value is a constant representing the virtual steering limit position. When a steering angle threshold is set to a value close to, and smaller than, the desired steering angle value, a first correction value is calculated so that a steering reaction force is increased rapidly when a steering angle becomes equal to or larger than the steering angle threshold. A second correction value is calculated so that the steering angle becomes equal to the desired steering angle value when the steering angle becomes equal to or larger than the steering angle threshold. The base current command value is corrected by the first correction value and the second correction value. The driver is thus restrained from turning the steering wheel to a position beyond the desired steering angle value.