ITSC 2025 Paper Abstract

Paper FR-LA-T35.1

Wang, Shan (Tongji University), Xu, Junqi (Tongji University), Gao, Dinggang (Tongji University), Rong, Lijun (Tongji University), Liu, Xiang (Tongji University)

Multi-Physics Coupled Dynamic Model for High-Speed Maglev Vehicles Considering Aerodynamic Characteristics of Air Springs

Scheduled for presentation during the Regular Session "S35c-Optimization, Control, and Learning for Efficient and Resilient ITS" (FR-LA-T35), Friday, November 21, 2025, 16:00−16:20, Surfers Paradise 2

2025 IEEE 28th International Conference on Intelligent Transportation Systems (ITSC), November 18-21, 2025, Gold Coast, Australia

This information is tentative and subject to change. Compiled on October 18, 2025

Keywords Transportation Optimization Techniques and Multi-modal Urban Mobility, Autonomous Rail Systems and Advanced Train Control Technologies, Demand-Responsive Transit Systems for Smart Cities

Abstract

This study establishes a multi-physics field coupling dynamics model for high-speed magnetic levitation(maglev) vehicles based on engineering thermodynamics, fluid mechanics, and structural dynamics theories. The model integrates critical subsystems, including air springs, height control valves, auxiliary air chambers, storage tanks, compressors, and vehicle control systems, providing a theoretical foundation for analyzing dynamic responses under complex operating conditions. Key findings include: The model accurately characterizes dynamic responses in critical operational scenarios, such as adaptive load regulation of height control valves and fault-tolerant mechanisms for single suspension point failures. Simulations reveal that increasing the poly-tropic index of air, shortening pipeline length, or enlarging inner diameter reduces system rise time but significantly increases overshoot. Pressure stabilization at rigid chamber ends remains unaffected by parameter variations. Air spring stiffness exhibits marked height-dependent variations: reaching 0.68 M·N/m at 0.185 m (vibration suppression), 0.145 M·N/m at 0.31 m (large displacement adaptability), and balancing performance at 0.31 M·N/m under working height. This research offers essential theoretical support for optimizing high-speed maglev system design and enhancing fault-tolerant mechanisms.