Failures of railway vehicles measurable on track

Abstract

This paper describes system for diagnostics of passing vehicles with help of measurements carried out at the track. There are the signals of vibration measured on rail foot and noise signals measured near to underside of vehicle. Further failures which could be measured by this method and estimation of their dominant frequencies are described too. The system has been tested on vehicles in metro and several methods of evaluation have been proposed. Signals are assessed in the time domain and in the frequency domain. Evaluation of results is carried out using neural networks.