A mixed train, where trains with different speeds run on the same railway, is a common practice. This paper focuses on optimising a catenary system for mixed trains with varying speeds. The objective function used to achieve this optimisation is the total standard deviation of the contact force. The goal is to enhance the current collection quality and minimise contact wear. To optimise the catenary system, the particle swarm-simulated annealing (PSSA) algorithm was applied. Several improvements were made to the algorithm. Firstly, it avoided redundant finite element method (FEM) simulations by eliminating duplicated input parameters. Additionally, before lowering the simulated annealing temperature, the model with the worst performance was removed, allowing for greater chances of discovering the global optimal solution. To evaluate the effectiveness of the structurally optimised design, a comparison was conducted between the contact force standard deviation of the optimised system and that of the original unoptimised system. The results of the optimisation showed a significant reduction of 69.8% in the standard deviation of the contact force compared to the benchmark system.
Design Optimisation of Mixed Trains Catenary Systems at Different Speeds
Lect.Notes Mechanical Engineering
The IAVSD International Symposium on Dynamics of Vehicles on Roads and Tracks ; 2023 ; Ottawa, ON, Canada August 21, 2023 - August 25, 2023
01.11.2024
7 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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