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:
Mar. 21, 2017
Filed:
Oct. 20, 2015
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken, JP;
Abstract
Provided is a steering assist apparatus () for a vehicle, including a transmission device () configured to transmit a force and a displacement relating to steering between a steering wheel () and steered wheels (L,R), a power steering device () configured to apply an assist torque to the transmission device, and a control device (). When assuming the steering wheel, the transmission device, the power steering device, and the steered wheels as a steering system, the control device is configured to calculate, based on a product of a steering angular velocity and a derivative of the steering angular velocity, a product of the steering angular velocity and a steering torque, and a product of a steering angle and a derivative of the steering torque, a change rate (dDE) of an energy of the steering system, and control the assist torque based on the change rate of the energy of the steering system.