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G. Aschauer, A. Schirrer, S. Jakubek:
"Realtime-capable finite element model of railway catenary dynamics in moving coordinates";
Talk: IEEE Multi-Conference on Systems and Control 2016, Buenos Aires; 09-19-2016 - 09-22-2016; in: "2016 IEEE Conference on Control Applications (CCA)", (2016), 1078 - 1083.

State-of-the-art hardware-in-the-loop testing exposes the unit-under-test to emulated virtual system environment dynamics already in the laboratory. Thus the designated environment model has to be simulated in real-time. In this work a real-time-capable high-fidelity model of the complex dynamics of railway catenaries is presented to be utilized in a high-dynamic, high-speed pantograph test rig. The complex distributed-parameter catenary dynamics modeled by two coupled Euler-Bernoulli bending beams under axial tension is described by utilizing a finite-element modeling approach with absorbing boundaries in a moving coordinate system. By exploiting sparsity, the obtained catenary model allows to simulate the coupled catenary/pantograph interaction in real time on an arbitrary large domain and thus is applicable in pantograph hardware-in-the-loop testing. An extension by nonlinear effects due to dropper slackening is efficiently incorporated in the simulation, and measures to retain real-time capability via the applied Newmark integration scheme are outlined. Promising results of implementations on PC and real-time platforms demonstrate the high performance of the proposed model structures and methods.

finite element analysis, catenary-pantograph interaction, pantograph testingt

http://dx.doi.org/10.1109/CCA.2016.7587950

http://publik.tuwien.ac.at/files/publik_257656.pdf