发明授权
- 专利标题： Linear and non-linear identification of the longitudinal tire-road friction coefficient
- 专利标题（中）： 纵向轮胎路面摩擦系数的线性和非线性识别
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申请号： US12987483申请日： 2011-01-10
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公开(公告)号： US08498775B2公开(公告)日： 2013-07-30
- 发明人: Simon Yngve , Youssef A. Ghoneim
- 申请人： Simon Yngve , Youssef A. Ghoneim
- 申请人地址： US MI Detroit
- 专利权人： GM Global Technology Operations LLC
- 当前专利权人： GM Global Technology Operations LLC
- 当前专利权人地址： US MI Detroit
- 代理机构： Quinn Law Group, PLLC
- 主分类号： G01N19/02
- IPC分类号： G01N19/02 ; B60W40/06
摘要：
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.
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