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Paper 1.3

Inverse estimation of catenary geometry from pantograph-catenary contact force

M. Tur, N. Aldaz, J. Gil, S. Gregori, A.M. Pedrosa and F.J. Fuenmayor

Institute of Mechanical Engineering and Biomechanics, Universitat Politecnica de Valencia, Spain

doi:10.4203/ccc.15.1.3

M. Tur, N. Aldaz, J. Gil, S. Gregori, A.M. Pedrosa, F.J. Fuenmayor, "Inverse estimation of catenary geometry from pantograph-catenary contact force", in J. Pombo, (Editor), "Proceedings of the Seventh International Conference on Railway Technology: Research, Development and Maintenance ", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 15, Paper 1.3, 2026, doi:10.4203/ccc.15.1.3

Keywords: pantograph, inverse problem, catenary, twin contact wire, contact force, bayesian optimization.

Abstract

This work addresses the inverse reconstruction of a CA-220 twin contact wire catenary geometry from the measured contact force data. It analyses the impact of installation errors and proposes a Bayesian optimization framework to estimate geometric parameters. Five algorithms are proposed and the convergence is assessed using synthetically generated data with a known solution. Results show that dropper lengths can be accurately identified, while other variables have limited influence.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 15 PROCEEDINGS OF THE SEVENTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 1.3 Inverse estimation of catenary geometry from pantograph-catenary contact force M. Tur, N. Aldaz, J. Gil, S. Gregori, A.M. Pedrosa and F.J. Fuenmayor Institute of Mechanical Engineering and Biomechanics, Universitat Politecnica de Valencia, Spain doi:10.4203/ccc.15.1.3 Full Bibliographic Reference for this paper M. Tur, N. Aldaz, J. Gil, S. Gregori, A.M. Pedrosa, F.J. Fuenmayor, "Inverse estimation of catenary geometry from pantograph-catenary contact force", in J. Pombo, (Editor), "Proceedings of the Seventh International Conference on Railway Technology: Research, Development and Maintenance ", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 15, Paper 1.3, 2026, doi:10.4203/ccc.15.1.3 Keywords: pantograph, inverse problem, catenary, twin contact wire, contact force, bayesian optimization. Abstract This work addresses the inverse reconstruction of a CA-220 twin contact wire catenary geometry from the measured contact force data. It analyses the impact of installation errors and proposes a Bayesian optimization framework to estimate geometric parameters. Five algorithms are proposed and the convergence is assessed using synthetically generated data with a known solution. Results show that dropper lengths can be accurately identified, while other variables have limited influence. download the full-text of this paper (PDF, 10 pages, 962 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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