Abstract

Estimation of the tire-road friction using the signal of on-board sensors is very important for the vehicle dynamic control systems. This paper presented a tire -- Croad friction coefficient estimation algorithm based on a modified Dugoff model. The proposed algorithm first determined the tire slip ratio and the instantaneous longitudinal friction coefficient using vehicle and wheel dynamics parameters. Then, the friction coefficient was estimated through the modified Dugoff model with subsection method and converse solution method. The effectiveness and performance of the algorithm were demonstrated through vehicle dynamics simulations on different road surface conditions.

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