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. 30, 2019
Filed:
Oct. 09, 2014
GM Global Technology Operations Llc, Detroit, MI (US);
Youssef A. Ghoneim, Rochester, MI (US);
Qingrong Zhao, Madison Heights, MI (US);
Qi Zhang, Sterling Heights, MI (US);
Bakhtiar B. Litkouhi, Washington, MI (US);
Yingmei Si, West Bloomfield, MI (US);
David M. Sidlosky, Beverly Hills, MI (US);
Valarie V. Boatman, Novi, MI (US);
Sami Ahmed, Orion Township, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS, LLC, , MI (US);
Abstract
Methods and systems for determining road surface information in a vehicle. In one embodiment, the method includes: determining at least one condition assessment value based on steering data; determining a feature set to include at least one of self-aligning torque (SAT), slip angle, SAT variance, steering rate, and lateral acceleration based on the condition assessment value; processing steering data obtained during a steering maneuver and associated with the feature set using a pattern classification technique; and determining a surface type based on the processing.