System and method for determining a wheel-rail adhesion value for a railway vehicle
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United States of America Patent
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Oct 11, 2022
Grant Date -
Dec 3, 2020
app pub date -
Dec 3, 2018
filing date -
Dec 4, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A system for determining a wheel-rail adhesion value for a railway vehicle including at least one axle to which two wheels having a radius are coupled is provided. The system includes a deformation detection circuit coupled to an axle arranged to detect a torsional deformation of the axle due to a longitudinal adhesion force transferred from the axle to the rail, and a controller arranged to estimate a torque value as a function of the torsional deformation detected to convert the estimated torque value into the longitudinal adhesion force value as a function of the radius of the wheels, and to calculate the wheel-rail adhesion value through the ratio between the longitudinal adhesion force value and a normal load value that the axle exerts on the rail. A method for determining a wheel-rail adhesion value for a railway vehicle is also provided.
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