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Friction Estimation for Railway Brake Systems in Field Tests

Schwarz, Christoph and Lüdicke, Daniel and Heckmann, Benjamin (2019) Friction Estimation for Railway Brake Systems in Field Tests. In: Tagungsband 2. International Railway Symposium Aachen. 2. International Railway Symposium Aachen, 26.-28. Nov. 2019, Aachen.

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Condition based monitoring concepts for railway brake systems offer a row of promising advantages: improved safety, reduced noise emission, and economic benefits by an optimal utilization of every single brake unit. However, a reliable determination of the current state of the brake components is difficult due to the rough operating conditions and the economic effort of a direct, optical identification. To ease the conflict between the economic restrictions, the required accuracy of the information, and the robustness of the measurement equipment, the current work presents a model-based observer design. This observer estimates the friction coefficients between brake disc and brake calipers for every wheelset of a train. To enable a railway-compliant and economically reasonable implementation, the observer configuration relies on a set of robust sensors, which are mostly used in modern trains. Furthermore, the influence of the train resistance on the longitudinal dynamics is taken into account to minimize the disturbance in the evaluation of the actual brake friction coefficients. In a next step the information on these friction coefficients can be used to display a maintenance alarm for not properly working brake equipment.

Item URL in elib:https://elib.dlr.de/132710/
Document Type:Conference or Workshop Item (Speech)
Title:Friction Estimation for Railway Brake Systems in Field Tests
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schwarz, ChristophChristoph.Schwarz (at) dlr.dehttps://orcid.org/0000-0003-4882-0828
Lüdicke, DanielDaniel.Luedicke (at) dlr.dehttps://orcid.org/0000-0001-7682-1014
Heckmann, BenjaminKnorr-Bremse Systeme für Schienenfahrzeuge GmbHUNSPECIFIED
Journal or Publication Title:Tagungsband 2. International Railway Symposium Aachen
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Model-based estimation; brake monitoring; friction identification
Event Title:2. International Railway Symposium Aachen
Event Location:Aachen
Event Type:international Conference
Event Dates:26.-28. Nov. 2019
Organizer:Research Center Railways (RCR)
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:17 Dec 2019 15:06
Last Modified:18 Dec 2019 16:43

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