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A Study on Train Braking Performance Assessment Methods Using Braked Weight Percentage

제동중량비율을 이용한 도시철도차량 제동성능 평가방법 연구

  • Choi, Don-Bum (Future Strategy Center, Korea Railroad Research Institute) ;
  • Lee, Kang-Mi (Metropolitan Transportation Research Center, Korea Railroad Research Institute) ;
  • Yoon, Yong-Ki (Metropolitan Transportation Research Center, Korea Railroad Research Institute)
  • 최돈범 (한국철도기술연구원 미래전략센터) ;
  • 이강미 (한국철도기술연구원 광역도시교통연구본부) ;
  • 윤용기 (한국철도기술연구원 광역도시교통연구본부)
  • Received : 2016.10.06
  • Accepted : 2016.11.10
  • Published : 2016.11.30

Abstract

In this study, we evaluate the braking performance of an urban railway vehicle to verify its basic safety condition. The braking performance evaluation methods, deceleration measurement and braked weight percentage, were compared for trains with different numbers of cars, in order to assess the advantages of each method and their compatibility. With a probabilistic braking model, the effect of the adhesion coefficient distribution was analyzed in accordance with the train composition. A train with many cars has a narrower deceleration distribution width than one with few cars. The braked weight percentage method is expected to be useful in the design of train signal systems, because it allows the braking distance to be calculated for various initial brake velocities. The deceleration distribution model and its results are expected to be useful as a basis for precise train signal design.

Keywords

Braking Distance;Brake Performance;Brake System;Braked Weight Percentage;Deceleration

Acknowledgement

Supported by : 한국철도기술연구원

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