US 11,884,114 B2
Method for determining the load applied to a tire
Pierre Nizet, Clermont-Ferrand (FR); and Antoine Paturle, Clermont-Ferrand (FR)
Assigned to COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand (FR)
Appl. No. 17/293,779
Filed by COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand (FR)
PCT Filed Nov. 11, 2019, PCT No. PCT/FR2019/052697
§ 371(c)(1), (2) Date May 13, 2021,
PCT Pub. No. WO2020/099784, PCT Pub. Date May 22, 2020.
Claims priority of application No. 1860478 (FR), filed on Nov. 14, 2018.
Prior Publication US 2022/0274449 A1, Sep. 1, 2022
Int. Cl. B60C 23/04 (2006.01); B60C 23/00 (2006.01); G01M 17/02 (2006.01); B60C 19/00 (2006.01); G01G 19/08 (2006.01)
CPC B60C 23/0486 (2013.01) [B60C 23/002 (2013.01); G01G 19/08 (2013.01); G01M 17/02 (2013.01); B60C 2019/004 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for determining a load of a tire mounted on a wheel of a vehicle and running along a ground, the tire being equipped with a sensor configured to acquire a measurement signal representative of a change in curvature of the tire as the tire runs along the ground, the method comprising the following steps:
acquiring, by the sensor, a measurement signal representative of the change in curvature of the tire during running;
obtaining a measurement of an internal pressure of the tire;
determining, from the measurement signal, measurement data comprising a first parameter representative of a length of a contact patch in contact with the ground during a revolution of the wheel bearing the tire;
obtaining a firmness factor representative of a condition of firmness of the ground, which is derived from measurements taken while the tire is rolling over the ground; and
determining the load of the tire as a function of the first parameter, of the firmness factor, and of the internal pressure of the tire.