Due to the dimensions of the tyre-road contact area, transients in a tyre last approximately 0.1s. Thus, in the case of abrupt maneuvers such as ABS braking, the use of a steady-state tyre model to predict the vehicle's behavior would lead to significant errors. Available dynamic tyre models, such as Pacejka's MF-Tyre model, are based on steady-state formulations and the transient behavior of the tyre is included by introducing a first order differential equation of relevant quantities such as the slip angle and the slippage. In these differential equations the most significant parameter used to describe the transient behavior is the so-called relaxation length, i.e. the distance traveled by the tyre to settle to a new steady–state condition once perturbated. Usually this parameter is assumed to be constant.

A Fast and Reliable Dynamic Tyre-Road Contact Model for ABS Braking Manoeuvre Simulations

BRAGHIN, FRANCESCO;CHELI, FEDERICO;
2006

Abstract

Due to the dimensions of the tyre-road contact area, transients in a tyre last approximately 0.1s. Thus, in the case of abrupt maneuvers such as ABS braking, the use of a steady-state tyre model to predict the vehicle's behavior would lead to significant errors. Available dynamic tyre models, such as Pacejka's MF-Tyre model, are based on steady-state formulations and the transient behavior of the tyre is included by introducing a first order differential equation of relevant quantities such as the slip angle and the slippage. In these differential equations the most significant parameter used to describe the transient behavior is the so-called relaxation length, i.e. the distance traveled by the tyre to settle to a new steady–state condition once perturbated. Usually this parameter is assumed to be constant.
Proceedings of 8th Biennial ASME Conference on Engineering Systems Design and Analysis, ESDA2006
9780791837795
Dynamic tyre models, First order differential equation, Steady state formulations, Tire road contact model; Braking, Computer simulation, Differential equations, Error analysis, Roads and streets, Tires; Interfaces (materials)
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/542685
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