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Dynamics observer for the longitudinal behavior of a wheelset on a roller rig

Schwarz, Christoph and Brembeck, Jonathan and Heckmann, Benjamin (2019) Dynamics observer for the longitudinal behavior of a wheelset on a roller rig. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 233 (10), pp. 1112-1119. SAGE Publications. DOI: 10.1177/0954409719828851 ISSN 0954-4097

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Official URL: https://journals.sagepub.com/doi/10.1177/0954409719828851

Abstract

The presented work illustrates the synthesis of a nonlinear model-based observer for the longitudinal dynamics estimation of a wheelset. This approach offers some significant improvements, such as an enhanced adherence to prescribed brake distances and an advanced usability of the condition-based maintenance of brake systems. The investigation of a single wheelset in a test rig environment enables, for example, the usage of an extended set of sensors to reliably validate the observers. The presented observer design process covers three main steps: identification of the characteristic system disturbances, implementation of the nonlinear observer dynamics, and parametrization of the observer via multicase optimization. With regard to the longitudinal dynamics, the variations of the friction conditions in the wheel–rail interface and in the interface between brake pads and brake disc have a crucial influence. Therefore, a parameter estimator and a disturbance observer are implemented, since these methods allow for a specific consideration of these disturbances. The obtained results prove that the observers accurately estimate the system behavior and provide reliable information on the longitudinal dynamics.

Item URL in elib:https://elib.dlr.de/127521/
Document Type:Article
Title:Dynamics observer for the longitudinal behavior of a wheelset on a roller rig
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schwarz, ChristophChristoph.Schwarz (at) dlr.dehttps://orcid.org/0000-0003-4882-0828
Brembeck, Jonathanjonathan.brembeck (at) dlr.deUNSPECIFIED
Heckmann, BenjaminKnorr-Bremse Systeme für Schienenfahrzeuge GmbHUNSPECIFIED
Date:12 February 2019
Journal or Publication Title:Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:233
DOI :10.1177/0954409719828851
Page Range:pp. 1112-1119
Publisher:SAGE Publications
ISSN:0954-4097
Status:Published
Keywords:Wheelset dynamics, railway modeling, observer design, laboratory testing
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:27 May 2019 17:22
Last Modified:23 Sep 2019 09:16

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