Estimation of the Maximum Tire-Road Friction Coefficient
نویسندگان
چکیده
We develop and test a ‘‘slip-based’’ method to estimate the maximum available tire-road friction during braking. The method is based on the hypothesis that the low-slip, low-m parts of the slip curve used during normal driving can indicate the maximum tire-road friction coefficient, mmax . We find support for this hypothesis in the literature and through experiments. The friction estimation algorithm uses data from short braking maneuvers with peak accelerations of 3.9 m/s to classify the road surface as either dry ~mmax'1! or lubricated ~mmax'0.6! . Significant measurement noise makes it difficult to detect the subtle effect being measured, leading to a misclassification rate of 20%. @DOI: 10.1115/1.1636773#
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