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Estimation of Road Surface Conditions From Tire Vibration

[+] Author Affiliations
Yoshihiro Suda, Kimihiko Nakano, Shigeyuki Yamabe

The University of Tokyo, Tokyo, Japan

Hiroyuki Sugiyama

Tokyo University of Science, Tokyo, Japan

Ryuzo Hayashi

Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan

Paper No. IMECE2010-38491, pp. 741-746; 6 pages
doi:10.1115/IMECE2010-38491
From:
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 11: New Developments in Simulation Methods and Software for Engineering Applications; Safety Engineering, Risk Analysis and Reliability Methods; Transportation Systems
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4448-9
  • Copyright © 2010 by ASME

abstract

This paper proposes the estimation algorithm of road conditions from tire vibration. The basic concept of estimation is that the tire vibration is determined by road irregularity and road friction condition. Because of difficulty of direct measurement of tire vibration, it is estimated from body acceleration using known tire model and vehicle properties between tire and body. To estimate the road irregularity, the Independent Component Analysis (ICA) method is used. The elastic deformation of the tire belt is modeled using the finite element absolute nodal coordinate formulation which allows for modeling large rotational motion and the nonlinear inertia effects. With comparison between estimated tire vibration from road irregularity with ICA and tire model and actual tire vibration from road irregularity and road surface condition with known vehicle properties, road surface condition could be estimated. So, tire vibration power spectral density (PSD) calculated by using the transmission characteristics becomes the function of the road surface, the road ruggedness, and the tire characteristic. These are clarified by the PSD ratio, ICA and the tire model, and road surface condition become able to estimate.

Copyright © 2010 by ASME
Topics: Vibration , Roads , Tires

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