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:
May. 25, 2010
Filed:
Dec. 15, 2006
Kathryn L. Pattok, Frankenmuth, MI (US);
Terrence D. Smith, Bay City, MI (US);
Ashok Chandy, Fenton, MI (US);
Julie A. Kleinau, Bay City, MI (US);
Jeff Zuraski, Saginaw, MI (US);
Mark P. Colosky, Vassar, MI (US);
Troy P. Strieter, Sebewaing, MI (US);
Kathryn L. Pattok, Frankenmuth, MI (US);
Terrence D. Smith, Bay City, MI (US);
Ashok Chandy, Fenton, MI (US);
Julie A. Kleinau, Bay City, MI (US);
Jeff Zuraski, Saginaw, MI (US);
Mark P. Colosky, Vassar, MI (US);
Troy P. Strieter, Sebewaing, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A method, system, and apparatus for providing enhanced steering pull compensation are provided. The method compensates for steering pull in a vehicle steering system that includes a handwheel. The method includes monitoring the vehicle to determine whether the vehicle is heading forward along a substantially linear straight-ahead path and, if so, measuring handwheel torque, as a sensed torque signal, to determine an amount of steering pull existing at the handwheel. The method also includes generating a torque assist signal in response to the sensed torque signal and calculating an offset signal for reducing the amount of steering pull to substantially zero. The method further includes producing a modified torque assist signal by adding the offset signal to the torque assist signal, and applying the modified torque assist signal to the vehicle steering system.