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Model-based analysis of wheel speed vibrations for road friction classification using MF-Swift

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Author: Schmeitz, A.J.C. · Alirezaei, M.
Source:Proceedings of the 4th International Tyre Colloquium, Tyre Models for Vehicle Dynamics Analysis, Ed. P. Gruber, R.S. Sharp, 20-21 April 2015, University of Surrey, Guildford, United Kingdom, 59-68
Identifier: 525395
ISBN: 978-1-84469-031-2
Keywords: Traffic · MF-SWIFT · SWIFT · Wheel speed vibrations · Friction · Mobility · Fluid & Solid Mechanics · IVS - Integrated Vehicle Safety · TS - Technical Sciences


With higher level of vehicle automation, it becomes increasingly important to know the maximum possible tyre forces during normal driving. An interesting method in this respect is estimating the tyre-road friction from the resonance in the wheel speed signal, excited by road roughness. A simulation environment using the MF-Swift tyre model is proposed, which gives insight in the correctness and functioning of this method. It is concluded that frequencies and damping ratios can be estimated with reasonable accuracy and that the trends observed with changing road friction are consistent. Furthermore, the proposed simulation environment gives opportunity to investigate other issues.