Parameter characteristics of rail inspection measurement system of HSR-350x

Kim, Sang Soo; Park, Choon-Soo; Kim, Young-Guk; Park, Chan-Kyoung

doi:10.1007/s12206-009-0332-5

Cited by 18 publications

(9 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…There is some phase shift because of the necessary filtering of long waves (compensation curves). Similar systems are used by other railways [11,[38][39][40][41][42] and produced by a number of suppliers, see e.g. [22,[43][44][45][46][47].…”

Section: Inertial Measurement Systemsmentioning

confidence: 99%

Road and track irregularities: measurement, assessment and simulation

Haigermoser

Luber²,

Rauh

et al. 2015

Vehicle System Dynamics

107

View full text Add to dashboard Cite

Road and track irregularities have an important influence on the dynamic behaviour of vehicles.Knowledge of their characteristics and magnitude is essential for the design of the vehicle but also for comparable homologation and acceptance tests as well as for the planning and management of track maintenance. Irregularities of tracks and roads are regularly measured using various measurement technologies. All have advantages and weaknesses and require several processing steps. Characterisation of irregularities is done in the distance as well as in the wavelength domain. For rail irregularities, various distance domain description methods have been proposed and are in use. Methods have been analysed and compared with regard to their processing steps. Several methods have been analysed using measured irregularity and vehicle response data. Characterisation in the wavelength domain is done in a similar way for track and road irregularities. Here, an important issue is the estimation of the power spectral densities and the approximation by analytical formulas. For rail irregularities, periodic defects also play an important role. The use of irregularities in simulations requires various processing steps if measured irregularities are used, as well as if synthetic data are utilised. This paper gives a quite complete overview of rail irregularities and points out similarities and differences to the road.

show abstract

Section: Inertial Measurement Systemsmentioning

confidence: 99%

Road and track irregularities: measurement, assessment and simulation

Haigermoser

Luber²,

Rauh

et al. 2015

Vehicle System Dynamics

107

View full text Add to dashboard Cite

show abstract

“…, (17) is the Fourier transform of . Each window is piled up and can be represented in a contour plot.…”

Section: A Distance-wavelength Representationmentioning

confidence: 99%

Waveband Analysis of Track Irregularities in High-Speed Railway from On-Board Acceleration Measurement

Lee

Choi

Kim

et al. 2012

JMMP

Self Cite

View full text Add to dashboard Cite

This paper is focused on waveband analysis of the lateral and vertical track irregularities from the on-board acceleration measurement of in-service high-speed trains. The track irregularities play important roles to determine dynamic stability of vehicles and ride quality of passengers, so that their amplitude and wavelength should be monitored continuously and carefully. Measuring acceleration at the axle-box or bogie of the trains has been under consideration for low-cost implementation and robust to a harsh railway environment. To estimate the track irregularities, lateral and vertical vibration caused by the wheel/track interaction is measured by the axle-box and bogie mounted accelerometers of an in-service high-speed train. A Kalman filter is used to prevent unrealistic drifts in the estimation. By applying the waveband-pass and compensation filters to the estimated displacement, it is possible to estimate the track irregularities. A distance-wavelength representation is used to identify their waveband in an intuitive way. It is verified by comparing with a commercial track geometry measurement system. From their comparison, it confirms that the representation can produce a satisfactory result.

show abstract

“…Considerando que el nivel es uno de los parámetros más importantes en el momento de realizar el monitoreo [4], se ha encontrado que existen dos formas de hacer su medición: manual y automática [5]. En la primera se trata de herramientas manuales con las que no se registran continuamente los datos medidos.…”

Section: Introductionunclassified

“…En el 2008 se diseñó y construyó una unidad móvil para la detección de desnivel en líneas ferroviarias en Japón, compuesto por un ADC NI USB 6009 acelerómetros, un micro PC Sony VGN-UX50 y un GPS [9]. Posteriormente se elaboró un sistema de medición que utilizaba láseres, cámaras y herramientas inerciales ubicadas directamente en el tren [4]. También se construyó en Rusia un sistema de diagnóstico, que comprendía un sistema mecánico-estructural, sobre el cual se ubicaban elementos electrónicos, incluyendo una PC, para que el operario tuviese acceso a los datos medidos y pudiese generar reportes y alarmas en caso de ser necesario [3].…”

Section: Introductionunclassified