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:
Jul. 21, 2015
Filed:
Jan. 17, 2013
Tao Yang, Midland, MI (US);
Michael Eickholt, Chesaning, MI (US);
Steve Klein, Munger, MI (US);
Tim Kaufmann, Frankenmuth, MI (US);
Niharika P. Popy, Saginaw, MI (US);
Tao Yang, Midland, MI (US);
Michael Eickholt, Chesaning, MI (US);
Steve Klein, Munger, MI (US);
Tim Kaufmann, Frankenmuth, MI (US);
Niharika P. Popy, Saginaw, MI (US);
Steering Solutions IP Holding Corporation, Saginaw, MI (US);
Abstract
A learning function is configured to determine a plurality of piecewise linear function coefficients based on measured data for an electric power-assisted steering (EPS) system. The measured data include a vehicle speed. The learning function is further configured to model a hysteresis loop of the EPS system using a piecewise linear function based on the plurality of piecewise linear function coefficients to determine an average friction. An average friction change compensator is configured to adjust friction-based EPS system compensation based on the average friction for a plurality of vehicle speed intervals of the vehicle speed.