Fault risk assessment of sliding plug door of EMU based on fuzzy interval TOPSIS

doi:10.16265/j.cnki.issn1003-3033.2021.04.024

Abstract

Abstract: In order to improve operation reliability of sliding plug door of EMU, fuzzy analytic hierarchy process (AHP) was used to calculate seven main fault modes and weight of fault causes.Fuzzy theory was introduced to evaluate cause of failure from three risk indexes, failure incidence, maintenance cost and failure operation delay. Multi-attribute risk indexes of each fault cause were evaluated and weighted risk evaluation matrix was obtained. TOPSIS was used to calculate relative nearness of fault mode, and result of risk assessment was obtained. The results show that calculated results are consistent with field maintenance records of plug door in recent 2 years. Failure of lock device, limit switch and sensitive edge fault have great harm to operation reliability of plug door of EMUS, need key overhaul and maintenance.

Key words: fuzzy interval, technique for order preference by similarity to an ideal solution(TOPSIS), electric multiple unit(EMU), sliding plug door fault, risk assessment, reliability

CLC Number:

X913.4

MA Run, QIU Weibin, QIN Yun, OU Hongxiang. Fault risk assessment of sliding plug door of EMU based on fuzzy interval TOPSIS[J]. China Safety Science Journal, 2021, 31(4): 177-183.

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