Invention Grant
- Patent Title: Linear and non-linear identification of the longitudinal tire-road friction coefficient
- Patent Title (中): 纵向轮胎路面摩擦系数的线性和非线性识别
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Application No.: US12987483Application Date: 2011-01-10
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Publication No.: US08498775B2Publication Date: 2013-07-30
- Inventor: Simon Yngve , Youssef A. Ghoneim
- Applicant: Simon Yngve , Youssef A. Ghoneim
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Agency: Quinn Law Group, PLLC
- Main IPC: G01N19/02
- IPC: G01N19/02 ; B60W40/06
Abstract:
A method of estimating a tire-road friction coefficient includes determining when the slope of a tire characteristic curve relating a utilized longitudinal friction of a tire to longitudinal slip of the tire is linear and non-linear. When the slope of the tire characteristic curve is linear, then the tire-road friction coefficient is estimated by correlating the slope of the tire characteristic curve to the tire-road friction coefficient. When the slope of the tire characteristic curve is non-linear, indicating that the tire is near or at saturation, then the tire-road friction coefficient is estimated by calculating a current utilized longitudinal friction of the tire.
Public/Granted literature
- US20120179327A1 LINEAR AND NON-LINEAR IDENTIFICATION OF THE LONGITUDINAL TIRE-ROAD FRICTION COEFFICIENT Public/Granted day:2012-07-12
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