|Table of Contents|

Optimization on multi-stage suspension scheme and dynamics performance of superconducting EDS maglev train(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2023年06期
Page:
168-179
Research Field:
载运工具运用工程
Publishing date:
2023-12-30

Info

Title:
Optimization on multi-stage suspension scheme and dynamics performance of superconducting EDS maglev train
Author(s):
MA Wei-hua1;  LI Teng-fei1;  HU Jun-xiong1;  ZHANG Sai2;  LUO Shi-hui1
(1. State Key Laboratory of Rail Transit Vehicle System, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; 2. CRRC Changchun Railway Vehicles Co., Ltd., Changchun 130062, Jilin, China)
Keywords:
vehicle engineering;  superconducting EDS maglev train;  levitation bogie;  multi-stage suspension;  co-simulation;  dynamics
PACS:
U266.4
DOI:
10.19818/j.cnki.1671-1637.2023.06.010
Abstract:
The suspension scheme of the superconducting electrodynamic suspension(EDS)maglev train levitation bogie was studied. The working principles of the superconducting EDS maglev train and the technical characteristics of the suspension system of existing levitation bogie were analyzed, and a multi-stage suspension system optimization scheme was proposed. The dynamics differential equation of the multi-stage suspension vehicle was theoretically derived. A co-simulation framework of superconducting EDS maglev train dynamics was established based on the multi-body dynamics software SIMPACK and the mathematical tool MATLAB/Simulink, and the magnetic properties of the superconducting EDS system were analyzed. The calculated electromagnetic forces were formed into a search table, and the mechanical models of three train bodies and four levitation bogies of the three-group superconducting EDS maglev train were constructed under the existing suspension scheme and multi-stage suspension scheme by SIMPACK. The electromagnetic force search model was established though MATLAB/Simulink. The search table was coupled with the mechanical dynamics model through the SIMAT module, and the dynamics responses of the superconducting EDS maglev trains under different suspension schemes in the condition of random track irregularity were compared though the co-simulation. Research results show that compared with the existing scheme, the vibration responses of the train levitation bogie and train body significantly reduce when the multi-stage suspension scheme is adopted, and the peak vibration acceleration amplitudes of both reduce by more than 50%. The vibration accelerations of the train bodies are both less than 1 m?s-2, and the stability indexes are basically maintained at an excellent level below 2.5. It is proved that the multi-stage suspension scheme can improve the dynamic response of the train and enhance the overall ride comfort of the vehicle. The research can provide a theoretical basis and reference for the optimization design of the levitation bogie scheme and dynamics research of the superconducting EDS maglev train. 1 tab, 11 figs, 31 refs.

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Last Update: 2023-12-30