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Fault Criticality Evaluation of Metro Door Based on WLSM and FWGM

  • Jin Bao Ren
  • Jing Long
  • Yong Qin
  • Zong Yi Xing
  • Jun Xia
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 288)

Abstract

The reliability of metro door is directly related to the safety of passengers. The failure mode and effects analysis (FMEA) method based on the weighted least squares model (WLSM) and the fuzzy weighted geometric mean (FWGM) is proposed to evaluate metro door fault criticality. First, WLSM is used to collect individual judgments to form the final aggregated judgment. Then, fuzzy risk priority numbers (FRPNs) are defined as FWGM of the fuzzy ratings for the three risk factors for prioritization of failure modes. Finally, the FRPNs are defuzzified using the centroid defuzzification method. The experiment results show that three failure modes including ‘‘EDCU function is broken,’’ “Limit switch S1wears out,” and “Nut component wears out” have greater damage on door than other failure modes.

Keywords

Metro door FMEA FRPN Weighted least squares model Fuzzy weighted geometric mean 

Notes

Acknowledgments

This research was sponsored by National High-tech R&D Program of China (863 Program, No.2011AA110501) and National Key Technology R&D Program of China (No. 2011BAG01B05). The supports are gratefully acknowledged.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Jin Bao Ren
    • 1
  • Jing Long
    • 2
  • Yong Qin
    • 3
  • Zong Yi Xing
    • 1
  • Jun Xia
    • 1
  1. 1.School of Mechanical EngineeringNanjing University of Science and TechnologyNanjingChina
  2. 2.Engineering Technology Research CenterGuangzhou Metro CorporationGuangzhouChina
  3. 3.State Key Laboratory of Rail Traffic Control and SafetyBeijing Jiao Tong UniversityBeijingChina

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