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철도차량 차체/대차간 상대변위를 이용한 곡선구간 곡률반경 추정 방법

Curvature Estimation Method of Curve Section Using Relative Displacement Between Body and Bogie of Rolling-stock

  • 허현무 (한국철도기술연구원 고속철도연구본부) ;
  • 박준혁 (한국철도기술연구원 고속철도연구본부) ;
  • 유원희 (한국철도기술연구원 고속철도연구본부)
  • Hur, Hyun-Moo (High-speed Railroad Systems Research Center, Korea Railroad Research Center) ;
  • Park, Joon-Hyuk (High-speed Railroad Systems Research Center, Korea Railroad Research Center) ;
  • You, Won-Hee (High-speed Railroad Systems Research Center, Korea Railroad Research Center)
  • 투고 : 2012.04.27
  • 심사 : 2012.07.30
  • 발행 : 2012.11.01

초록

철도차량 곡선구간 주행 시 곡선주행성능을 향상시키기 위한 능동형 철도차량 개발 분야에서 곡선구간을 실시간으로 인식하기 위한 기술 확보는 매우 중요하다. 그러나 고가의 전용 검측차량을 이용하거나 여러 가지 센서를 복합적으로 이용하는 기존의 곡률반경 추정방법은 실차에 적용하기에는 실용성이 미흡하다. 따라서 본 논문에서는 실차에 적용이 용이하고 경제적인 곡률반경 추정방법을 제안하였다. 새로운 방법은 철도차량 곡선구간 주행 시 발행하는 차체와 대차간의 상대변위를 측정하여 곡률반경을 실시간으로 추정할 수 있는 방법이다. 본 제안 방법의 타당성을 검토하기 위하여 모사해석 및 실차시험을 수행하였으며 그 결과, 제안한 곡률반경 추정방법의 타당성을 확인하였다.

The development of a technique for the real-time sensing of a curve section is very important for active rolling-stocks in order to improve the curving performance. However, conventional methods using expensive track inspection equipment or various complex sensors are not practicable to be applied to commercial vehicles. Therefore, we have proposed a new method to estimate the curve radius of a curve section. This method uses the relative displacements occurring between the body and the bogie when the rolling-stock is running on a curve. To verify the validity of this method, we conducted a vehicle dynamics simulation and test using a real vehicle on a test line. The results confirmed the validity of the proposed method. We expect that this method will be effectively applied in studies of active rolling-stocks to increase the curving performance using active control technology.

키워드

참고문헌

  1. Hur, H. M., Lee, C. W., Kwon, S. T. and Yun, C. H., 2003, "Analysis on the Wear Patterns of Wheel Profiles for Conventional Line," Proc. of Korean Society for Railway Spring Conference, pp. 651-655.
  2. You, W. H., Hur, H. M., Ko, H. I., Park, H. H. and Choi, Y. W., 2009, "A Study on Relationship Between Curving Noise and Wheel Wear in Seoul Subway System," Trans. of Korean Society for Noise and Vibration Engineering, Vol. 19, No. 1, pp. 85-93. https://doi.org/10.5050/KSNVN.2009.19.1.085
  3. Hur, H. M., Park, J. H. and You, W. H., 2011, "Trend of the Active Technology for Railway Rolling-Stock," Proc. of the Korean Society for Precision Engineering Spring Conference, pp. 1559-1560.
  4. Ko, T. W., Lee, D. S., 2011, "Study for Prediction of Ride Comfort on the Curve Track by Predictive Curve Detection," Proc. of Korean Society for Railway Autumn Conference, pp. 69-74.
  5. Suh, S. B., 2001, Track Construction, Ulgoaal, pp. 329-330.
  6. Suh, S. B., 2000, Mechanized Track Maintenance, Ulgoaal, pp. 181-188.

피인용 문헌

  1. Study of the active radial steering of a railway vehicle using the curvature measuring method vol.28, pp.11, 2014, https://doi.org/10.1007/s12206-014-1026-1
  2. Wheelset Steering Angle of Railway Vehicle according to Primary Suspension Property vol.32, pp.7, 2015, https://doi.org/10.7736/KSPE.2015.32.7.597
  3. Analysis of the active control of steering bogies for the dynamic characteristics on real track conditions pp.2041-3017, 2017, https://doi.org/10.1177/0954409716687454