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. 04, 2014
Filed:
Jul. 13, 2011
Jocelyn Delarche, Villeurbanne, FR;
Andre Michelis, Grigny, FR;
Pierre Pilaz, Saint Marcel l'Eclaire, FR;
Christophe Ravier, Saint Pierre de Chandieu, FR;
Jocelyn Delarche, Villeurbanne, FR;
Andre Michelis, Grigny, FR;
Pierre Pilaz, Saint Marcel l'Eclaire, FR;
Christophe Ravier, Saint Pierre de Chandieu, FR;
JTEKT Europe, , FR;
Abstract
A method for securing the assistance torque () supplied by an electric assistance motor () in a motor vehicle power steering system includes the steps of: estimating the force on the steering system rack from the torque exerted by the driver on the steering wheel (), from the assistance torque (), and optionally from other parameters such as the speed of the electric assistance motor; comparing a target assistance torque with an authorized assistance range, defined with respect to the estimated rack force () at any moment, and in the event the target assistance torque is maintained above predefined limits for a predefined duration, correcting and optionally interrupting the power steering.