DOI QR코드

DOI QR Code

Reliability Improvement Method of the Electrical Door System for the Railway Vehicles

철도차량의 전기식 출입문 시스템의 신뢰도 개선 방안

Yang, Yong Joon;Lee, Hi Sung
양용준;이희성

  • Received : 2015.01.27
  • Accepted : 2015.03.17
  • Published : 2015.03.31

Abstract

Electrical door system is one of the most essential items for the successful commercial operation of the railway vehicles. Nowadays, reliability values of electrical door system have a tendency to be included in technical requirements for design and manufacturing of rolling stocks. Manufacturer shall meet the reliability target values of electrical door system which is proposed by railway operator in procurement contract book. Railway operator shall approve the supplier's the reliability target values based on maintenance operation data. Railway operators are in the transition stage from the framework of maintenance interval based on time to the framework of maintenance interval based on distance. In this study, failure rates of the electrical door system currently used in railway vehicles are collected from maintenance field data. Failure rates are analyzed by using Minitab. Several kinds of plan for improving reliability are also suggested. It is necessary to keep studying on reliability prediction methodology, applying it in the field and implementing on improvement of reliability through feedback as well. Further, it will be useful for determining new maintenance policies or changing maintenance intervals for existing railway vehicles.

Keywords

Reliability;Railway Vehicle;Electrical Door System;Failure Rate

References

  1. M.A.Yoon, B.C.Koo, Y.J.Son, H.S.Lee "A Study on Reliability of Electric Door System for Rolling Stock", Journal of the Korean Society for Railway the spring symposium, pp. 998-1003, 2012
  2. "KORAIL general electric vehicle inspection procedures Side Entrance Door Unit", KORAIL
  3. D.S.Lee, "A Study for Reliability Improvement of Belt Type Door System using FMECA", Seoul National University of Science and Technology, 2009
  4. D.G.Lee, Y.J.Son and H.S.Lee "A Study on Determining Maintenance Intervals Considering the Maintenance Effect for the PDS in Metro EMU", Journal of the Korean Society for Railway, vol. 14, no. 3, pp. 216-221, 2011 https://doi.org/10.7782/JKSR.2011.14.3.216
  5. C.S.Kim, H.S.Lee "Reliability Analysis of Electric Door System for EMU", Journal of the Korean Society of Safety, vol. 28, no. 8, pp.52-56, 2013 https://doi.org/10.14346/JKOSOS.2013.28.1.052
  6. S.G.Seo, "Analysis of minitab reliability", Eretech, 2013

Acknowledgement

Supported by : 서울과학기술대학교