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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.:

US 8886434 B1

PDFFull Text
Date of Patent:
Nov. 11, 2014

Filed:

Feb. 04, 2009

Method of operating an electronic stability control

Applicants:

Kevin A. O'dea, Ann Arbor, MI (US);

Flavio Nardi, Farmington Hills, MI (US);

Jihan Ryu, Rochester Hills, MI (US);

Inventors:

Kevin A. O'Dea, Ann Arbor, MI (US);

Flavio Nardi, Farmington Hills, MI (US);

Jihan Ryu, Rochester Hills, MI (US);

Assignee:

GM Global Technology Operations LLC, Detroit, MI (US);

Attorney:

Ingrassia Fisher & Lorenz, P.C.

Primary Examiner:

Khoi Tran

Assistant Examiner:

Nicholas Kiswanto

Int. Cl.
CPC ...
G06F 7/70 (2006.01); G06F 19/00 (2011.01); G06G 7/00 (2006.01); G06G 7/76 (2006.01); B60B 39/00 (2006.01); B60T 7/12 (2006.01); G05D 1/00 (2006.01); G06F 17/00 (2006.01); B60T 8/24 (2006.01); B60W 30/02 (2012.01);
U.S. Cl.
CPC ...
B60W 30/02 (2013.01);
Abstract

A method of stabilizing a vehicle is provided. The vehicle is travelling at a forward speed and a lateral speed, and comprises a lateral acceleration sensor, a yaw sensor adapted to detect an actual yaw rate of the vehicle around a central axis, a steering mechanism adapted to steer the vehicle by a steered yaw rate, and an electronic stability control system. The method comprises determining the forward speed of the vehicle with the electronic stability control system, determining a yaw error rate based upon a difference between the actual yaw rate of the vehicle and the steered yaw rate, determining the vehicle is in an unstable condition by comparing the yaw error rate to a first predetermined yaw rate, computing a calculated lateral speed based on acceleration data from the lateral acceleration sensor, the forward speed, and the actual yaw rate in response to determining the vehicle is in the unstable condition, calculating a correction factor based on the calculated lateral speed of the vehicle and the forward speed of the vehicle, and adjusting operation of the electronic stability control system by the correction factor.

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