Study on the Vibration Characteristics of Suspension Frame System for Maglev Train Under Track Irregularity Harmonic Excitation

IF 1.7 3区物理与天体物理 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Applied Superconductivity Pub Date : 2025-04-03 DOI:10.1109/TASC.2025.3557764

Mingliang Zhang;Liru Liu;Yongjun Shen;Kai Cui

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引用次数: 0

Abstract

In order to avoid the abnormal vibration behavior of the high-temperature superconducting (HTS) flux-pinned magnetic levitation (maglev) train at high velocity (reach up to more than 500 km/h) due to the external interference from the suspension frame system, the vibration characteristics of suspension frame system are studied. First, the levitation force between the HTS combination and the permanent magnet guideway (PMG) is measured by way of the quasi-static test platform, and the empirical formula of levitation force is obtained. Then, the nonlinear vibration differential equation of the suspension frame system under the track irregularity harmonic excitation is established. The first approximate solution is obtained based on the multiscale method, which is verified by way of the numerical solution. Finally, the amplitude–frequency response equation of the suspension frame system under the primary resonance is derived; thus, the influence of running velocity, track irregularity wavelength, and amplitude on the steady-state amplitude is studied. An analytical method for determining the feasible domain of track irregularity parameters under different running velocity is proposed based on the safety standard of the maglev train. The effective domain of track irregularity parameters can be obtained. The methodology and results of this article provide a theoretical foundation for constructing PMG of the HTS flux-pinned maglev train.

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来源期刊

IEEE Transactions on Applied Superconductivity 工程技术-工程：电子与电气

CiteScore

3.50

自引率

33.30%

发文量

650

审稿时长

2.3 months

期刊介绍： IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Large scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.