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Fuzzy comprehensive evaluation in FMECA of electro-hydraulic servo valve

  • Beihang University

Research output: Contribution to journalArticlepeer-review

Abstract

According to the limited analysis of the whole system or product and the unreasonable weight distribution of the failure risk, occurrence probability and detective difficulty, the fuzzy comprehensive evaluation was proposed to optimize the failure modes, effect and criticality analysis(FMECA) of the electro-hydraulic servo valve. The evaluation result was obtained after the factor set, the evaluation set, the weight set and other parameters determined. The level of the risk degree of every single failure mode to the whole servo valve system was also given. In the application of the fuzzy evaluation results, the order of the failure modes was determined by the relative risk level. And the risk level of the whole electro-hydraulic servo valve would be obtained. These results have a positive meaning to the further improvement of reliability and the maintenance of the electro-hydraulic servo valve and other products.

Original languageEnglish
Pages (from-to)1575-1578
Number of pages4
JournalBeijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics
Volume37
Issue number12
StatePublished - Dec 2011

Keywords

  • Effect and criticality analysis (FMECA)
  • Electro-hydraulic servo valve
  • Failure modes
  • Fuzzy comprehensive evaluation

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