G - Physics – 01 – M
Patent
G - Physics
01
M
G01M 17/02 (2006.01) B60C 23/06 (2006.01) B60T 8/00 (2006.01)
Patent
CA 2543437
Disclosed is a method and a system for determining a cornering angle (.alpha.) of a tyre (11) fitted on a vehicle during a running of said vehicle on a rolling surface, the tyre comprising an equatorial plane, the method comprising the steps of: estimating a length (Pli/e) of a contact region between said tyre and said rolling surface, said length being measured at a distance from the equatorial plane; estimating a load (Fz) exerted on said tyre; estimating a camber angle (.gamma.) to which said tyre is subjected; and deriving such cornering angle (.alpha.) from said camber angle (.gamma.), tyre load (Fz) and contact region length (PLi/e).
L'invention concerne un procédé et un système permettant de déterminer un angle de dérive (.alpha.) d'un pneu (11) d'un véhicule lors de la marche dudit véhicule sur une surface de roulement, le pneu comprenant un plan équatorial. Le procédé selon l'invention comprend les étapes suivantes : estimation d'une longueur (PL¿i/e?) d'une région de contact entre le pneu et la surface de roulement, ladite longueur étant mesurée à une certaine distance du plan équatorial ; estimation d'une charge (F¿z?) exercée sur le pneu ; estimation d'un angle de carrossage (.gamma.) auquel le pneu est soumis ; détermination de l'angle de dérive (.alpha.) à partir de l'angle de carrossage (.gamma.), de la charge du pneu (F¿z?) et de la longueur (PL¿i/e?) de la région de contact ainsi estimés.
Arosio Daniele
Brusarosco Massimo
Mancosu Federico
Kirby Eades Gale Baker
Pirelli Pneumatici S.p.a.
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