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Reliability modeling of a jet pipe electrohydraulic servo valve

  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The hydraulic system and its components can accumulate a significant amount of contaminant after running for a period of time. The accumulated contaminant in the component will degrade its performance and even cause catastrophic failure. Traditional models are distinctly deficient when applied to analyze the performance degradation. In this paper, an improved method is proposed to trace the performance degradation during a long time operation. By means of a novel failure injection performance degradation simulation framework (FIPDS) to inject failure mechanisms into the performance model, we develop a complete reliability model of a jet pipe electrohydraulic servo valve considering multiple failure modes and mechanisms based on failure modes, mechanisms, and effects analysis (FMMEA). The performance indexes rated flow and null bias are obtained from the model simulation to evaluate the performance degradation. Simulation results demonstrate the feasibility of the method in this research.

Original languageEnglish
Title of host publicationRAMS 2014 - Proceedings 2014
Subtitle of host publicationThe 60th Annual Reliability and Maintainability Symposium
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479928477
DOIs
StatePublished - 2014
Event60th Annual Reliability and Maintainability Symposium, RAMS 2014 - Colorado Springs, CO, United States
Duration: 27 Jan 201430 Jan 2014

Publication series

NameProceedings - Annual Reliability and Maintainability Symposium
ISSN (Print)0149-144X

Conference

Conference60th Annual Reliability and Maintainability Symposium, RAMS 2014
Country/TerritoryUnited States
CityColorado Springs, CO
Period27/01/1430/01/14

Keywords

  • Degradation
  • Failure mechanism
  • Jet pipe electrohydraulic servo valve
  • Reliability
  • modeling and simulation

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