Diagnosis of Overhead Contact Line based on Contact Force

Kusumi, Shunichi; Fukutani, Takahiro; Nezu, Kazuyoshi

doi:10.2219/rtriqr.47.39

Cited by 25 publications

(26 citation statements)

References 1 publication

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“…As expected, the periodicity of catenary structure can be observed. Since the pantograph-catenary sliding contact is partly depending on the geometric configuration of catenary, the PCCF should have a correlation with the static contact wire height especially under high speed [15]. From another perspective, by applying a static vertical force on each point of the contact wire, the elasticity of the contact wire can be calculated as the ratio of the force vs. the vertical displacement of the contact point.…”

Section: The Concept Of Cswmentioning

confidence: 99%

“…Consequently, in previous studies concerning pantograph-catenary interaction, the periodicity of catenary structure can be constantly identified in the PCCF signals from either simulation results or real-life measurements. In order to investigate the frequency-domain characteristics of PCCF, the Fourier transform and the power spectrum density are frequently adopted [10]- [15]. As a result, the frequency components that characterize the span and inter-dropper distance can be observed from the frequency domain of PCCF.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ensemble EMD-Based Automatic Extraction of the Catenary Structure Wavelength From the Pantograph–Catenary Contact Force

Liu

Wang

Dollevoet

et al. 2016

IEEE Trans. Instrum. Meas.

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. Ensemble EMD-based automatic extraction of the catenary structure wavelength from the pantograph-catenary contact corce. IEEE Transactions on Instrumentation and Measurement, 65(10), 2272-2283. https://doi.org/10.1109/TIM.2016.2579360 Important note To cite this publication, please use the final published version (if applicable). Please check the document version above. CopyrightOther than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons. Takedown policyPlease contact us and provide details if you believe this document breaches copyrights. We will remove access to the work immediately and investigate your claim.

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Section: The Concept Of Cswmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ensemble EMD-Based Automatic Extraction of the Catenary Structure Wavelength From the Pantograph–Catenary Contact Force

Liu

Wang

Dollevoet

et al. 2016

IEEE Trans. Instrum. Meas.

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“…It indicates that the frequency feature of PSDs has certain correlation with the increase in speed. Meanwhile, Kusumi et al [136] analyzed the waveform of the PSD of contact force and proposed that the PSD of contact force can be used for catenary state diagnosis. Rønnquist et al [137] employed the AR spectrum of the contact wire dynamic displacement to observe the frequency variation of contact wire vibration.…”

Section: Dynamic State Evaluation Based On Psdmentioning

confidence: 99%

Advances of research on high-speed railway catenary

Liu

Song

et al. 2017

J. Mod. Transport.

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The interaction between the catenary and pantograph is one of the most crucial factors that determine the train operation in high-speed railway. The bad state of catenary is able to directly influence the power supply safety of traction power system. In this paper, four aspects on the catenary research of high-speed railway are reviewed in detail, namely the solution methods for catenary equilibrium state, the dynamic modeling methods of catenary, non-contact detection methods of catenary, and the static and dynamic evaluation methods of catenary. In addition, their recent advances are described. For the low solution accuracy of the initial equilibrium state of catenary, the structure finding method with multi-objective constraint and nonlinear finite element procedure are introduced to solve the problem. For the catenary's dynamic modeling, considering the influence of environmental wind on the catenary, environmental wind simulations and wind tunnel tests are used to obtain the aerodynamic coefficients and build the wind field along the catenary for analysis of its wind vibration characteristics. In order to improve the detection accuracy of non-contact detection for the catenary, the deep learning theory and real-time detection algorithms should be adopted in the future. In view of the lack of dynamic assessment method for the catenary, the modern spectrum evaluation, timefrequency analysis, big data technology and their combinations will be the important means for future catenary evaluation.Keywords High-speed railway Á Modeling of catenary Á Simulation of catenary Á Detection of catenary Á Evaluation of catenary

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“…In order to obtain a stable contact force, parameter optimization and active control design are supposed to be effective counter measures. The past development of pantograph system was subjected to large-scale experimental facility with an actual size train (1) . It was constrained by cost and time.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Contact Force Variation between Contact Wire and Pantograph Based on Multibody Dynamics

Abdullah

Michitsuji

Nagai

et al. 2010

JMTL

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In recent years, high speed railway vehicle technologies have been studied and investigated in order to develop their performances with the objectives of improving riding comfort, noise reduction and high efficiency from environmental perspective. One of the essential performances is current collection stability. Operating at high speed conditions, the current collection system which consists of contact wire and pantograph suffers from contact force variation. In order to reduce such variation, pantograph design should be comprised by active control thus realizing stability. Numerical analysis can be applied to model the current collection and in particular simulate the contact force variation itself. In this study, Finite Element Method and Absolute Nodal Coordinate Formulation are used to model the wire. A free vibration experiment that focuses on the tension of wire is performed to validate the numerical models. The validated result from the experiment demonstrates the accuracy of the numerical analysis in modeling the wire. The techniques are then applied to model the contact wire for the contact force investigation. The result indicated the availability of pantograph design via simulation to achieve steady contact force.

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Diagnosis of Overhead Contact Line based on Contact Force

Cited by 25 publications

References 1 publication

Ensemble EMD-Based Automatic Extraction of the Catenary Structure Wavelength From the Pantograph–Catenary Contact Force

Ensemble EMD-Based Automatic Extraction of the Catenary Structure Wavelength From the Pantograph–Catenary Contact Force

Advances of research on high-speed railway catenary

Analysis of Contact Force Variation between Contact Wire and Pantograph Based on Multibody Dynamics

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