한국철도학회논문집 (Journal of the Korean Society for Railway)

  • 제20권1호
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  • Pages.111-119
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  • 2017
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  • 1738-6225(pISSN)
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  • 2288-2235(eISSN)
한국철도학회 (The Korean Society for Railway)
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자기부상열차와 가이드웨이 상호작용을 고려한 가이드웨이 구조물의 진동사용성 처짐 한계

Deflection Limits based on the Vibration Serviceability of Guideway Structures Considering Maglev Train-Guideway Interaction

  • 투고 : 2017.01.05
  • 심사 : 2017.02.10
  • 발행 : 2017.02.28
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초록

이 연구에서는 자기부상열차-가이드웨이 상호작용을 고려하여 자기부상철도 가이드웨이 구조물의 진동사용성을 고려한 처짐한계를 제안한다. 간략화된 자기부상철도 시스템의 운동방정식을 유도하고, 자기부상력 제어를 위한 되먹임 상수가 부상공극의 변동량이 최소가 되도록 최적화한다. 이 시스템에 대하여 자기부상열차의 운행속도, 가이드웨이 경간장, 2차 현가장치의 고유진동수와 감쇠비를 변화시켜 가며, 부상공극의 크기와 차체의 연직가속도에 대한 사용성 기준을 만족하는 가이드웨이의 처짐한계를 조사한다. 해석 결과로부터 자기부상열차의 2차 현가장치에 대한 요구 조건과 가이드웨이 구조물이 만족시켜야 하는 처짐한계를 제안한다.

In this study, deflection limits based on the vibration serviceability of guideway structures are proposed considering maglev train-guideway interaction. Equations of motion are derived for a simplified maglev railway. Feedback constants for the control of the electromagnetic force for levitation are optimized in order to minimize the airgap fluctuations. Deflection limits for a guideway are calculated for various operating speeds of a maglev train, span lengths of a guideway, and natural frequencies and damping ratios of the second suspension in order to satisfy the serviceability criteria for airgaps and for the vertical acceleration of a cabin. From the analysis results, proposed are requirements for the second suspension of maglev trains and deflection limits for guideway structures.

키워드

참고문헌

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