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. 12, 2019
Filed:
Feb. 27, 2015
Jtekt Europe, Irigny, FR;
Sébastien Bourdrez, Yzeron, FR;
Pascal Moulaire, La Tour de Salvagny, FR;
Christophe Ravier, Saint Pierre de Chandieu, FR;
JTEKT EUROPE, Irigny, FR;
Abstract
A method for managing a power steering system, including a step (a) of detecting a reversal in the steering direction which involves acquiring a signal, referred to as a 'motor torque signal' (C), representative of the assistance force (C) delivered by the power steering motor, then evaluating the time derivative (δC/δt) of the motor torque signal, then comparing the time derivative of the motor torque signal to a predefined variation threshold (S) in order to detect a derivative peak, greater than the variation threshold (S), that indicates a reversal in the steering direction. The method next includes a friction evaluation step (b) which involves evaluating the friction from the drop, during the reversal in the steering direction, in a so-called 'actuation force signal' (C), which is representative of the total actuation force exerted together on the power steering by the driver and by the power steering motor.