Study on the Hybrid Damping Semi-active Control of Secondary Suspension of Superconducting Electrodynamic Suspension Train

doi:10.3901/JME.2023.10.236

Abstract

Abstract: Superconducting electrodynamic suspension(EDS) train is one of the main development directions of high-speed rail transit in next generation, and the dynamic problem is an important aspect affecting its application performance. In order to improve the running safety and ride comfort of superconducting EDS train, a semi-active control method for superconducting EDS train with hybrid damping of skyhook and groundhook is proposed. Based on the dynamic circuit theory, the vehicle-guideway electromagnetic force is calculated, and the Simulink and SIMPACK platform are used to co-simulate the electromagnetic force calculation, electromagnetic force calculation and control method. The optimal maximum damping coefficient and proportional coefficient of the control method are determined, and the vibration control effects of the carbody and bogie with passive suspension and hybrid damping semi-active suspension are compared and analyzed. The results show that the lateral dynamic performance of the superconducting EDS train is worse than that of the vertical one; When the vertical proportional coefficient is 1, the best vibration reduction effect can be obtained when the lateral hybrid damping proportion coefficient of articulated bogie and non-articulated bogie is 1 and 0.4 respectively. Compared with the passive suspension, the vertical and lateral Sperling ride quality indexes of the head car under the hybrid damping semi-active control are reduced by 20.9% and 8.8% respectively, and the lateral ride quality level is upgraded from good to excellent. The vertical and lateral ride quality indexes of the intermediate car are reduced by 7.4% and 17.3% respectively, and the root mean square (RMS) of lateral acceleration of the articulated bogie and the non-articulated bogie are reduced by 12.5% and 15.9% respectively. In frequency domain, the low frequency vibration of carbody and bogie less than 5 Hz is effectively suppressed. The above research results verify that the hybrid damping semi-active control can effectively improve the running safety and ride comfort of the superconducting EDS train.

Key words: superconducting electrodynamic suspension, dynamics model, semi-active control, dynamic circuit, Co-simulation

CLC Number:

U237

MA Guangtong, ZENG Jingsong, FENG Piji, YAN Zhaoying, ZHANG Weihai. Study on the Hybrid Damping Semi-active Control of Secondary Suspension of Superconducting Electrodynamic Suspension Train[J]. Journal of Mechanical Engineering, 2023, 59(10): 236-249.

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