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:
Apr. 13, 2004
Filed:
Dec. 20, 2001
Steve K. Raypole, Tipp City, OH (US);
Kirk T. Billings, Dayton, OH (US);
James M. Petrofes, Tipp City, OH (US);
Michael Pawlowski, Carmel, IN (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A system and method for digital steering sensor fault detection comprises monitoring steering wheel position information from a digital steering wheel position sensor at set time intervals, determining steering wheel position information for the current time interval and the previous time interval, and advancing a value change counter if the steering wheel position information for the current time interval is the same as for the previous time interval; monitoring vehicle speed, and advancing a speed cycle counter when the vehicle speed crosses a first threshold speed after crossing a second threshold speed; and setting fault bit information if the value change counter is zero after the speed cycle counter reaches a speed cycle limit. The steering wheel position information can be for a plurality of digital steering wheel position sensor outputs and provide corresponding fault bits, which can be compared to a fault table to diagnose a particular fault.