Robust system and method for auto-location of tire-based sensors

摘要

A tire sensor locating system for auto-location of a tire-based air pressure sensor at any tire location on a vehicle includes a hub acceleration sensor mounted to make a hub vertical acceleration measurement at a preset and known location on the vehicle for a respective one of the wheel hubs and a chassis acceleration sensor mounted to a chassis of the vehicle to make a chassis vertical acceleration measurement for the vehicle chassis. An estimator model is employed to derive a tire vertical stiffness estimation from the hub vertical acceleration measurements and the chassis vertical acceleration measurement. A look-up table correlates tire vertical stiffness estimation against measured tire air pressure and from the look-up table an assigned location of the tire sensor is made through a correlation between the tire measured air pressure and the tire vertical stiffness estimation.

主权项

1. A tire sensor locating system for auto-location of tire-based sensors comprising:
a vehicle supported by a plurality of vehicle tires, each of the tires mounted to a wheel hub and each of the tires having a respective tire-based sensor operable to measure a tire air pressure; a receiver for receiving from one of the tire sensors a measured tire air pressure at an un-identified sensor location on the vehicle; a plurality of hub acceleration sensors mounted to the vehicle, each hub acceleration sensor operable to make a hub vertical acceleration measurement at a preset and known location on the vehicle for a respective one of the wheel hubs; a chassis acceleration sensor mounted to a chassis of the vehicle operable to make a chassis vertical acceleration measurement for the vehicle chassis; an estimator model for deriving a tire vertical stiffness estimation from the hub vertical acceleration measurements and the chassis vertical acceleration measurement; a look-up table correlating tire vertical stiffness estimation against measured air pressure; a processor operable to consult the look-up table and identify an assigned location of the one tire sensor from a correlation between the tire measured air pressure of the one tire and the tire vertical stiffness estimation of the one tire.