Continuous measurement of derailment quotient and wheel-rail contact position in railway vehicle using axially-asymmetric bridge circuits and orthogonal weighting functions
Instrumented wheelsets are widely used in the railway industry for the purpose of measurement of the wheel-rail interaction forces, which are crucial factors in a running safety assessment. Recently, the author proposed a new configuration of bridge circuit for measuring wheel-rail lateral force, wh...
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| Main Authors: | , |
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| Format: | Article |
| Language: | Japanese |
| Published: |
The Japan Society of Mechanical Engineers
2025-05-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/91/946/91_25-00059/_pdf/-char/en |
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| Summary: | Instrumented wheelsets are widely used in the railway industry for the purpose of measurement of the wheel-rail interaction forces, which are crucial factors in a running safety assessment. Recently, the author proposed a new configuration of bridge circuit for measuring wheel-rail lateral force, which are categorized as “axially-asymmetric bridge circuit.” The merit of this type of bridge circuit is to reduce the measurement error associated to the lateral contact point shift. In this study, we propose a highly accurate continuous measurement method of the derailment coefficient based on “orthogonal weighting functions” that utilizes the characteristics of an axially-asymmetric bridge circuits. A continuous measurement method for the lateral contact position is also proposed utilizing the concept of the orthogonal weighting functions. The validity of the proposed method was confirmed through roller-rig tests. |
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| ISSN: | 2187-9761 |