Method for monitoring the state of a bogie of a railway vehicle comprising at least one wheel set

摘要

A method for monitoring the state of a bogie of a railway vehicle having at least one wheel set, wherein the wheels of the wheel set are rigidly connected by an axle and have an approximately conical wheel profile, and signals corresponding to a sinusoidal run of the wheel set of the bogie based on the conical wheel profile of the wheels are filtered out of signals provided by sensors disposed on the bogie. The frequency of the sinusoidal run is determined relative to boundary conditions, such as the prevailing vehicle speed, and compared to a save value or range of values for the frequency of the sinusoidal run typical for the prevailing boundary conditions, wherein the deviation of the measured frequency from the saved value or range of values for the frequency is monitored.

主权项

1. A method for monitoring the state of a bogie of a rail vehicle, comprising at least one wheel set, wherein the wheels of the at least one wheel set are rigidly connected by an axle and have an approximately conical wheel profile, the method comprising:
filtering out signals which correspond to a sinusoidal motion of the at least one wheel set of the bogie based on the conical wheel profile of the wheels so that the sinusoidal motion signals are filtered out of the signals supplied by at least one sensor arranged on the bogie, wherein the sinusoidal motion indicates motion behavior of the at least one wheel set with the approximately conical wheel profile; determining, using a microprocessor-based evaluation device, a frequency (f) of the sinusoidal motion with respect to peripheral conditions including a respectively present vehicle speed; comparing, using a microprocessor-based evaluation device, the determined frequency with a stored value or value range indicative of present peripheral conditions, for the frequency (f) of the sinusoidal motion; and monitoring a deviation of the measured frequency (f) from the stored value or value range, wherein, the frequency of the sinusoidal motion is determined using a Fourier transformation from a measured time signal and a filtered time signal of a lateral acceleration signal, and, a determination of an unacceptable state of wear has occurred if the frequency of the sinusoidal motion deviates by more than a predefined value from a frequency value which is anticipated for peripheral conditions, wherein a damping characteristic value of the wheel set of the bogie is determined as a function of the determined frequency of the sinusoidal motion and the speed which is present.