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:
Aug. 22, 2017
Filed:
May. 02, 2016
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Masao Ueyama, Mishima, JP;
Yoji Kunihiro, Susono, JP;
Yoshiaki Suzuki, Sunto-gun, JP;
Takahiro Kojo, Gotenba, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken, JP;
Abstract
A control device () for an electric power steering device () is configured to: store a basic target return speed (Vrb), which increases in magnitude as the magnitude of a steering angle (θ) increases; calculate, when a steering wheel () is being returned to a neutral position, the basic target return speed (Vrb) based on an actual steering angle (Step); calculate a transitional target return speed (Vtrt), which gradually increases in magnitude and gradually approaches the basic target return speed as the magnitude of the actual steering wheel decreases; and control, when the magnitude of a difference between the basic target return speed and the transitional target return speed is more than a reference value, a steering assist torque so that a return speed reaches the transitional target return speed (Stepto Step).