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Simultaneous Estimation of Wheel-Rail Adhesion and Brake Friction Behaviour

Schwarz, Christoph and Keck, Alexander (2020) Simultaneous Estimation of Wheel-Rail Adhesion and Brake Friction Behaviour. IFAC-PapersOnLine, 53 (2), pp. 8470-8475. IFAC Secretariat. doi: 10.1016/j.ifacol.2020.12.1430. ISSN 2405-8963.

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Official URL: https://www.sciencedirect.com/science/article/pii/S2405896320318401


In the field of longitudinal train dynamics the brake process is not only a safety critical aspect but it also determines the capacity of the rail network. Therefore, a reduction of the brake distance increases the safety level and the network capacity at the same time. However, to implement an advanced brake control set-up, the knowledge of the wheel-rail adhesion and the brake pad-disc friction is usually necessary. Since the direct measurement of these determining parameters is not reasonable due to technical and economic reasons, the present work presents an estimator framework for their online identification. To ensure a robust and reliable performance of the estimator, a generic wagon model is designed and the observability of the nonlinear system is evaluated. Furthermore, a reasonable synthesis of an extended Kalman filter is discussed that takes account of the system characteristics. In the end, the test results from a roller rig verify the accurate and robust performance of the developed estimator and confirm the great potential of such a concept in the context of mechatronic railway systems.

Item URL in elib:https://elib.dlr.de/136872/
Document Type:Article
Title:Simultaneous Estimation of Wheel-Rail Adhesion and Brake Friction Behaviour
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schwarz, ChristophChristoph.Schwarz (at) dlr.deUNSPECIFIED
Keck, AlexanderAlexander.Keck (at) dlr.deUNSPECIFIED
Journal or Publication Title:IFAC-PapersOnLine
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1016/j.ifacol.2020.12.1430
Page Range:pp. 8470-8475
Publisher:IFAC Secretariat
Keywords:Rail traffic, nonlinear systems, friction estimation, extended Kalman filter
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Rail Transport
DLR - Research area:Transport
DLR - Program:V SC Schienenverkehr
DLR - Research theme (Project):V - NGT BIT
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Vehicle System Dynamics
Deposited By: Schwarz, Christoph
Deposited On:29 Oct 2020 15:33
Last Modified:05 May 2021 10:50

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