Method of determining the forces in wheel-rail contact in rail vehicles

摘要

Method of determining the forces in the wheel-rail contact in rail vehicles, comprising the placement of strain gauges (3) forming two Wheatstone bridges over positions of the wheel veil (1), providing deformation signals of the veil according to the radial direction, so that two measurement channels are obtained that provide two signals depending on the angular position of the wheel (1) with respect to the wheel-rail contact, with the following steps for determining the positions of the strain gauges (3): # - Deduction of a function that provides the value of the deformation. # - Construction of a function that theoretically provides the value of the output channel of the bridges. # - Definition of objective function for an optimization problem. # - Selection on two pairs of opposite quadrants of two sets of points. # - Obtaining the positions of the extensometric bands (3) by mat optimization Ematic