SYSTEM FOR DETERMINING A WHEEL-RAIL ADHESION VALUE FOR A RAILWAY VEHICLE AND THE CORRESPONDING METHOD THEREOF

摘要

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 (R) are coupled, comprising: - a deformation detection circuit (10) coupled to an axle (1) which is arranged to detect a torsional deformation of the axle due to a longitudinal adhesion force (F_long) transferred from the axle to the rail; - a control means arranged to estimate a torque value as a function of the torsional deformation detected to convert the estimated torque value into a longitudinal adhesion force value (F_long) as a function of the radius (R) of the wheels, and to calculate a wheel- rail adhesion value through the ratio between the longitudinal adhesion force value (F_long) and a normal load value that the axle exerts on the rail. A method is also described for the determination of a wheel-rail adhesion value for a railway vehicle.