Analysis of Wheel Speed Vibrations for Road Friction Classification

With higher level of vehicle automation, it becomes increasingly important to know the maximum possible tire forces during normal driving. An interesting method in this respect is estimating the tire–road friction from the resonance peak in the wheel speed signal, excited by road roughness. A simulation environment using the MF-Swift tire model is proposed, which gives insight in the correctness and functioning of this method. From implementing the estimation algorithm and considering the tire torsional vibration system, 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 like robustness of the estimation method to road roughness. Additionally, the tire modelling aspect of the estimation method is analyzed and improvements are proposed.

Language

  • English

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Filing Info

  • Accession Number: 01603937
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 7 2016 3:01PM