超导电动悬浮系统阻尼特性研究

Study on the Damping Characteristics of Superconducting Electrodynamic Suspension System

超导电动悬浮具有大悬浮间隙、节能、环保等优点,是未来高速磁悬浮列车系统的技术路线之一,阻尼特性是其实际应用中稳定悬浮的关键参数,然而针对电动悬浮系统阻尼特性的研究仍然处于起步阶段。该文以铰链零磁通线圈超导电动悬浮系统为研究对象,基于动态电路理论模型,开发场-路-运动耦合的超导电动悬浮振动分析模型,并提出基于移动区间的加速算法,通过与实测数据的比较,验证模型的有效性,揭示超导电动悬浮垂向与导向自由振动与强迫振动特性。最后,基于振动能量法的阻尼评价方法,阐述垂向与导向阻尼特性随列车运行速度、振动频率和振动幅值等参数之间的内在关系,所提方法为电动悬浮技术发展提供重要参考。

Superconducting electrodynamic suspension(EDS) has the advantages of large suspension gap, energy saving, environmental protection and so on, it is one of the technical routes for the high-speed maglev train system in the future. Damping parameters directly determine the stability of EDS. However, the research on damping is still in its infancy. This paper focuses on the damping characteristics of the null-flux EDS. First, based on the dynamic circuit theory, this paper proposed a field-circuit-motion coupled model and a moving interval acceleration algorithm. The validity of the model was verified by the comparison of the measured and simulated data. Then, this paper revealed the vertical and guiding vibration characteristics using this model. Finally, based on the proposed vibration energy method, this paper studied the influences of the speed, vibration amplitude and vibration frequency on the vertical and guiding damping characteristics. The results of this paper will promote the development of EDS.