Method and device for estimating the friction values of a wheel of a vehicle against a substrate
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United States of America Patent
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Jun 2, 2020
Grant Date -
Feb 8, 2018
app pub date -
Aug 3, 2017
filing date -
Aug 5, 2016
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Abstract
A method and a device for estimating coefficients of friction of a wheel of a vehicle with respect to an underlying surface including decomposing a supplied trajectory into individual curve segments, estimating a lateral force and a slip angle for a front axle of the vehicle, assigning respectively estimated lateral forces and slip angles relating to the associated individual curve segments and storing these value pairs in a memory, estimating a tire characteristic curve for each of the curve segments based on the value pairs stored for the respective curve segment in the memory, estimating a coefficient of friction for each curve segment based on the respectively estimated tire characteristic curve, and storing the estimated coefficients of friction relating to the respectively associated curve segments in a coefficient of friction map.
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