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Title:

THEORY AND PRACTICE FOR RESTORING AN ORIGINAL WAVEFORM OF A RAILWAY TRACK IRREGULARITY

Accession Number:

00712831

Record Type:

Component

Availability:

Ken-yusha, Incorporated

1-45-6 Hikari-cho, Kokubunji-shi
Tokyo Japan

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Order URL: http://worldcat.org/oclc/3127232

Abstract:

The measurement of track irregularity has long been based on the principle of versed sine method. This paper describes a theory and practice of restoring an original waveform of a railway track irregularity from measured data. The digital inverse filter for a restoration is designed to have a complete linear phase characteristic and so a restored waveform usually has no distortions as derived from the phase characteristic. From the design of restoring digital inverse filter to the filtering operation, FFT (Fast Fourier Transform) algorithm is utilized. Data processing in the restoration can be executed very quickly and accurately. So far the effectiveness of restoring method has been proved successfully in some direct or indirect ways as compared with the results of experimental measurements and analysis.

Language:

English

Corporate Authors:

Railway Technical Research Institute

2-8-38, Hikari-cho, Kokubunji-shi
Tokyo 185 Japan

Authors:

Yoshimura, A

Pagination:

p. 85-94

Publication Date:

1995-6

Serial:

Railway Technical Research Institute, Quarterly Reports

Volume: 36
Issue Number: 2
Publisher: Railway Technical Research Institute/Tetsudo Gijutsu Kenkyujo
ISSN: 0033-9008
OCLC: 3127232
Serial URL: http://www.rtri.or.jp/infoce/qr_E.html

Features:

Figures (17) ; References (2)

Uncontrolled Terms:

Old TRIS Terms:

Subject Areas:

Maintenance and Preservation; Railroads

Files:

TRIS

Last Modified:

Nov 2 1995 12:00AM

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