T.A. Aliev, T.A. Babayev, T.A. Alizada, N.E. Rzayeva, H. Ahmedov, E. Manafov
Technology for vibration noise monitoring of the technical condition of railroad tracks
It is shown that modern geometry cars, flaw detector cars and other track test cars provide reliable control of the technical condition of all hauls of the track at “certain intervals of time”. Their number is limited and therefore “continuous monitoring” of all stages is almost impossible. One of the possible options for monitoring the technical condition of the track in these “intervals of time” is considered, and while analyzing the soil vibrations arising from the impact of the rolling stock, informative attributes are formed. The application of traditional technologies of correlation and spectral analysis for this purpose proved ineffective, since significant errors arise from the effects of the noise of vibration signals, and the adequacy of the results of track control decreases. For this reason, the authors use the technology of noise analysis of the useful vibration signal, the noise of vibration signals, and the relationship between them. Noise here is used as a carrier of diagnostic information. On their basis, one of the possible options for a technical monitoring tool is proposed, which can be used in one of the cars of all rolling stocks to monitor the beginning of changes in the technical condition of the track during their movement in all hauls.
Keywords: Railroad tracks, Geometry cars, Flaw detector cars, Haul, Vibration, Noise monitoring, Useful signal, Noisy signal, Equivalent signal, Correlation analysis, Spectral analysis, Intelligent systems
Technology for vibration noise monitoring of the technical condition of railroad tracks
It is shown that modern geometry cars, flaw detector cars and other track test cars provide reliable control of the technical condition of all hauls of the track at “certain intervals of time”. Their number is limited and therefore “continuous monitoring” of all stages is almost impossible. One of the possible options for monitoring the technical condition of the track in these “intervals of time” is considered, and while analyzing the soil vibrations arising from the impact of the rolling stock, informative attributes are formed. The application of traditional technologies of correlation and spectral analysis for this purpose proved ineffective, since significant errors arise from the effects of the noise of vibration signals, and the adequacy of the results of track control decreases. For this reason, the authors use the technology of noise analysis of the useful vibration signal, the noise of vibration signals, and the relationship between them. Noise here is used as a carrier of diagnostic information. On their basis, one of the possible options for a technical monitoring tool is proposed, which can be used in one of the cars of all rolling stocks to monitor the beginning of changes in the technical condition of the track during their movement in all hauls.
Keywords: Railroad tracks, Geometry cars, Flaw detector cars, Haul, Vibration, Noise monitoring, Useful signal, Noisy signal, Equivalent signal, Correlation analysis, Spectral analysis, Intelligent systems