Summary This paper is focused on the rail irregularity estimation from axle-box vibration of an in-service high-speed train. Usually, the rail irregularity has been measured by a special railway inspection system during maintenance work. However, the procedure requires some mechanical or optical sensors that are sensitive to harsh railway environments, and it is too slow for in-service trains. Therefore, the procedure has to be performed in limited time and track sections. As a solution to this problem, measuring axle-box acceleration is proposed to estimate the lateral and vertical rail irregularities. For reliable estimation of displacement from the measurement, a method based on a Kalman filter and wavelength band-pass filters is proposed. The estimated results are compared with a railway inspection system. It is confirmed that the proposed method can provide useful rail estimates without any mechanical or optical sensors.


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    Title :

    Estimation of Rail Irregularity by Axle-Box Accelerometers on a High-Speed Train


    Contributors:
    Lee, J. S. (author) / Choi, S. (author) / Kim, S. S. (author) / Park, C. (author)


    Publication date :

    2012-01-01


    Size :

    8 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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