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Estimating the wheel lateral position of a mechatronic railway running gear with nonlinear wheel–rail geometry

Keck, Alexander and Schwarz, Christoph and Meurer, Thomas and Heckmann, Andreas and Grether, Gustav (2020) Estimating the wheel lateral position of a mechatronic railway running gear with nonlinear wheel–rail geometry. Mechatronics, 73, p. 102457. Elsevier. doi: 10.1016/j.mechatronics.2020.102457. ISSN 0957-4158.

[img] PDF - Only accessible within DLR bis December 2022 - Postprint version (accepted manuscript)

Official URL: http://www.sciencedirect.com/science/article/pii/S0957415820301227


The “Next Generation Train” (NGT) is a double-deck high speed train concept in light-weight design that has been established as a technical and project framework in which the German Aerospace Center gathers its long-term railway vehicle research. To reduce wheel and rail wear and to enhance the passenger capacity, a mechatronic running gear with independently rotating wheels (IRW) is a key vehicle component under research. This running gear requires an advanced control of the lateral dynamics in order to fully exploit its potential in minimizing wear and noise, but this relies on information on its lateral position relative to the track. In daily railway operation it is difficult to directly measure this displacement of the wheel-pair. However, according to previous work it is possible to design an appropriate observer to estimate the lateral position, but its estimation accuracy highly depends on the chosen sensor configuration. Nevertheless, it was shown that the lateral dynamics of the running were not completely reproduced by the system description especially at suddenly changing directions in the movement of the IRW. In this work the system description is complemented by a nonlinear description of the wheel–rail geometry. Therefore, an observability analysis and an observer synthesis to estimate the lateral position for the nonlinear system of the 1:5 scaled hardware running gear is carried out. For validation purposes an extended Kalman filter with the U-D formalism is implemented at the real-time environment of the testbed and the estimation accuracy of the observer configurations is compared.

Item URL in elib:https://elib.dlr.de/139660/
Document Type:Article
Title:Estimating the wheel lateral position of a mechatronic railway running gear with nonlinear wheel–rail geometry
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Keck, AlexanderAlexander.Keck (at) dlr.dehttps://orcid.org/0000-0002-2956-8340
Schwarz, ChristophChristoph.Schwarz (at) dlr.dehttps://orcid.org/0000-0003-4882-0828
Meurer, Thomastm (at) tf.uni-kiel.dehttps://orcid.org/0000-0002-9175-2157
Heckmann, AndreasAndreas.Heckmann (at) dlr.deUNSPECIFIED
Grether, GustavGustav.Grether (at) dlr.deUNSPECIFIED
Date:10 December 2020
Journal or Publication Title:Mechatronics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.mechatronics.2020.102457
Page Range:p. 102457
Keywords:Observability analysis, Observer design, Extended Kalman filter, Nonlinear systems, Railway, Running gear, Train
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
Institute of System Dynamics and Control
Deposited By: Keck, M.Eng. Alexander
Deposited On:16 Dec 2020 16:42
Last Modified:03 Feb 2021 09:29

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