Abstract
Smart tyres are an emerging technology able to turn tyres into sensors able to provide information about tyre-road contact. It is straightforward to understand how this technology can promote the development of new active control strategies and/or improve the present ones through the enhancement of estimation of unknown quantities, such as tyre-road friction coefficient and vehicle sideslip angle which are crucial for stability and safety control systems (ABS, ESP, etc.). Specifically the present paper investigates how smart tyres can improve sideslip angle and friction coefficient estimation and evaluates robustness of estimation to road bank angle. The considered smart tyre is based on three tri-axial accelerometers glued on the inner liner. The adopted sensor presents the advantages of tiny dimensions, low weight, minimal impact on the production process, wide bandwidth, high reliability and the robustness required to withstand the impulses occurring when the sensors enter and exit the footprint. Available measurements, which are provided once per wheel turn by the smart tyre, are the longitudinal, lateral and vertical contact forces.
To evaluate the effect of these additional measurements on sideslip angle and friction coefficient estimation, an Extended Kalman Filter based on a single-track vehicle model was implemented.
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Authors greatly acknowledge Pirelli Tyres for the support in this research.
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Cheli, F., Ivone, D., Sabbioni, E. (2015). Smart Tyre Induced Benefits in Sideslip Angle and Friction Coefficient Estimation. In: Wee Sit, E. (eds) Sensors and Instrumentation, Volume 5. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-15212-7_9
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DOI: https://doi.org/10.1007/978-3-319-15212-7_9
Publisher Name: Springer, Cham
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