Reconstruction of Wheel Forces Using an Intelligent Bearing

Paper #:
  • 2016-01-0092

Published:
  • 2016-04-05
DOI:
  • 10.4271/2016-01-0092
Citation:
Kerst, S., Shyrokau, B., and Holweg, E., "Reconstruction of Wheel Forces Using an Intelligent Bearing," SAE Int. J. Passeng. Cars – Electron. Electr. Syst. 9(1):196-203, 2016, doi:10.4271/2016-01-0092.
Pages:
8
Abstract:
Active vehicle safety and driving assistance systems can be made more efficient, more robust and less complex if wheel load information would be available. Although this information could be determined via numerous different methods, due to various reasons, no commercially feasible approach has yet been introduced. In this paper the approach of bearing load estimation is topic of interest. Using the bearing for load measurement has considerable advantages making it commercially attractive as: i) it can be performed on a non-rotating part, ii) all wheel loads can be measured and iii) usually the bearing serves the entire lifetime of the vehicle. This paper proposes a novel approach for the determination of wheel loading. This new approach, based on the strain variance on the surface of the bearing outer ring, is tested on a dedicated bearing test setup. The experimental results show that the approach allows for the determination of all three force vectors and two moments in different load conditions with sufficient accuracy and bandwidth suitable for the application in vehicle dynamics control.
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