Determination of railway track longitudinal profile using measured inertial response of an in-service railway vehicle
| Autor: | Daniel Cantero, Cathal Bowe, Eugene J. O'Brien, Paraic Quirke |
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| Rok vydání: | 2017 |
| Předmět: |
Service (business)
Inertial response Computer science Mechanical Engineering 020208 electrical & electronic engineering Biophysics Condition monitoring 02 engineering and technology Track (rail transport) Maintenance planning Vehicle dynamics Transport engineering 020303 mechanical engineering & transports Cross entropy 0203 mechanical engineering 0202 electrical engineering electronic engineering information engineering Train |
| Zdroj: | Structural Health Monitoring |
| ISSN: | 1741-3168 1475-9217 |
| Popis: | The use of sensors fixed to in-service trains has the potential to provide real-time track condition monitoring to inform maintenance planning. An Irish Rail intercity train was instrumented for a period of 1 month so that a numerical method developed to find track longitudinal profile from measured vehicle inertial responses could be experimentally tested. A bogie-mounted accelerometer and gyrometer measured vertical acceleration and angular velocity as the train made regular service operations between Dublin and Belfast on the island of Ireland. Cross entropy optimisation is used to find a track longitudinal profile that generates a numerical inertial response that best fits the measured response. Tolerance limits are used to inject variance where required to ensure a good match between measured and modelled signals. A section of track with known track settlement history is selected as a case study. A level survey was undertaken during the measurement campaign to characterise the longitudinal profile through the test section. Bandpass filters are used to compare inferred profiles and the surveyed profile. Good agreement is found between the two profiles although improvements in accuracy and reproducibility are required before conformance with current standards is achieved. © 2017. This is the authors' accepted and refereed manuscript to the article. Locked until 4.12.2018 due to copyright restrictions. The final authenticated version is available online at: http://journals.sagepub.com/doi/10.1177/1475921717744479 |
| Databáze: | OpenAIRE |
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