Track Condition Monitoring Based on Car-Body Acceleration Using Time-Frequency Analysis
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A track condition monitoring system that uses a compact on-board sensing device has developed and applied for track condition monitoring of regional railway lines in Japan. This study describes the application of time-frequency analysis for condition monitoring of railway tracks from car-body acceleration measured in in-service train. Simulation studies and field test results showed that Hilbert-Huang transform (HHT) gives good time-frequency resolution and intrinsic mode functions give the detail information of track faults.
KeywordsRailway Track Time-frequency analysis Wavelet Hilbert-Huang transform
This study was supported by JSPS KAKENHI Grant Number 17K06240. This paper is based on the collaborative research “Development of track monitoring system for regional railway” among Nihon University, Kyosan Electric Co. Ltd. and National Traffic Safety and Environmental Laboratory (NTSEL). We would like to thank R. Hirose (Graduate School of Nihon University), H. Takata (Kyosan) and H. Mori (NTSEL) for fruitful discussions.
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