Int J Performability Eng ›› 2020, Vol. 16 ›› Issue (11): 1826-1834.doi: 10.23940/ijpe.20.11.p14.18261834

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Reliability Analysis of a Metro Braking Control System based on Fuzzy GO Method

Zheng Lia,b, Jianwei Yanga,b,*, Dechen Yaoa,b, Jinhai Wanga,b and Qicheng Panga,b   

  1. aSchool of Mechanical-Electronic and Vehicle Engineering, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China;
    bBeijing Key Laboratory of Performance Guarantee on Urban Rail Transit Vehicle, Beijing University of Civil Engineering and Architecture Beijing, 100044, China
  • Submitted on ; Revised on ; Accepted on
  • Contact: *E-mail address: yangjianwei@bucea.edu.cn

Abstract: A braking control system is an essential part of urban rail vehicle braking systems. Due to the uncertainty of operational data, direct analysis can affect the authenticity of system reliability. To solve the deviation of system reliability analysis caused by uncertainty, GO Methodology is combined with fuzzy theory to establish the GO graph model of the system according to the characteristics of the braking control system. The membership function of the fuzzy success rate of the system is obtained by using the modified signal flow calculation method combined with the fuzzy number algebraic calculation method, and the system fuzzy success rate with high reliability is selected. The calculated results can provide guidance and suggestions for system maintenance, and they have strong engineering practicability.

Key words: braking system, fuzzy theory, GO method, reliability analysis, FTA method