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:
Oct. 15, 2013
Filed:
Nov. 30, 2011
Kevin L. Derry, Wheeler, MI (US);
Kevin L. Derry, Wheeler, MI (US);
Steering Solutions IP Holding Corporation, Saginaw, MI (US);
Abstract
A system for providing steering torque assistance to an electrically-powered steering apparatus comprises a torque assistance motor coupled to the steering apparatus. A steering controller is configured to cause the torque assistance motor to apply a commanded level of steering torque assistance to the steering apparatus. The steering controller is configured to determine the commanded level of steering torque assistance based on a product of a scheduled level of steering torque assistance and a torque assistance scale factor, wherein the scheduled level of steering torque assistance is determined from a scheduled torque assistance characteristic having a nominal assist. The steering controller is configured to determine a scaled assist based on feedback from one or more safety sensors; and the torque assistance scale factor is determined as a ratio of the scaled assist and the nominal assist.