SYSTEM AND METHOD FOR DETERMINING TIRE UNIFORMITY PARAMETERS FROM PIEZOELECTRIC MEASUREMENTS IN THE TIRE COUNTER-DEFLECTION ZONE

摘要

Systems and methods of determining tire uniformity parameters from piezoelectric tire sensor output signals obtained while operating in the counter-deflection zone include establishing a transfer function that relates a tire uniformity parameter to the piezoelectric output signals. Piezoelectric output signals from two or more piezoelectric tire sensors are then monitored to measure the voltage change from each piezoelectric tire sensor while it is operating in the counter-deflection zone. These output signals are correlated, and an actual tire uniformity parameter value is determined by applying the measured and correlated piezoelectric output signal voltage change levels to the established transfer function. Actual tire uniformity values are ultimately provided as electronic output to a user.

主权项

1. A method, comprising:
electronically establishing a transfer function relating a tire uniformity parameter to a piezoelectric output signal for a given tire; monitoring the piezoelectric output signal from two or more piezoelectric tire sensors to measure the voltage change from each piezoelectric tire sensor while it is operating in the counter-deflection zone, wherein the counter-deflection zone comprises an area of the tire that is not in contact with a ground surface; correlating the piezoelectric output signals from each one of the two or more piezoelectric tire sensors; electronically determining the actual tire uniformity parameter value by applying the measured and correlated piezoelectric output signal voltage change levels to the established transfer function; and providing the actual tire uniformity parameter value as electronic output.