TIRE SLIP ANGLE ESTIMATION SYSTEM AND METHOD

摘要

A slip angle estimation includes a tire having one or more first and second strain sensor(s) affixed to opposite respective first and second tire sidewalls. The sensors measure a tire strain in their respective sidewalls and generate a sidewall strain signal indicative of strain present within the tire sidewalls. A slip angle estimation is made by estimating the difference in the signal slope of the sensors in the opposite sidewalls. A load estimation is further made for the tire from the inner and outer sidewall strain signals and the load estimation is used in the slip angle estimation.

主权项

1. A slip angle estimation system for estimating a vehicle tire slip angle comprising:
at least one tire supporting a vehicle; first and second strain sensing means affixed to opposite respective first and second tire sidewalls of the tire to operably measure a tire strain in the respective first and second sidewalls, the first and the second strain sensing means each generating a sidewall strain signal indicative of strain present within the respective tire sidewalls; tire slip angle estimation means for calculating a tire slip angle based upon a comparison of the sidewall strain signals from the first and the second strain sensing means.