초전도 EDS 시스템 캡슐열차의 동특성 연구

초록

The capsule train is a subsonic high-speed transportation system adopting electrodynamic suspension using a superconducting magnet. As the capsule train travels in a levitated state by using magnetic levitation force at a certain speed, the dynamic characteristics under those conditions must be considered. In this study, the running dynamic characteristics of a capsule train were studied in the speed range of 210km/h to 1080km/h. To analyze the dynamic characteristics of a capsule train comprising one carbody and two bogies, the equations with 15 degrees of freedom for vertical, lateral, roll, pitch, and yaw directions were derived. Based on the characteristics of a side wall EDS system, the effects of running speed, levitation coil pitch, and vertical and lateral displacement were taken into account for the levitation stiffness and guidance stiffness, which function as primary suspensions of capsule train. In addition, irregularities of the guideway in the vertical and lateral directions were considered in the analysis. Finally, the displacement and acceleration of capsule train were analyzed in terms of specific frequencies and those magnitudes.

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