Reliability analysis of electrohydraulic servo valve suffering common cause failures

• Autorzy: Yang Y.-J. , Huang H.-Z. , Liu Y. , Zhu S.-P. , Peng W.

Warianty tytułu

PL

Analiza niezawodności serwozaworu elektrohydraulicznego narażonego na uszkodzenia spowodowane wspólną przyczyną

• Języki publikacji: EN

Abstrakty

EN

The electrohydraulic servo valve (EHSV) is widely used in many engineering fields. Its reliability is of great importance to the reliability and safety of entire servo control systems. With the aim of analyzing and evaluating reliability of EHSV, this paper firstly presents the physical structure and functional principle of EHSV. It is followed by the Failure Mode, Effects and Criticality Analysis (FMECA). From the analysis, the common cause failures (CCF) in the studied EHSV are identified. Lastly, a method that can quantitatively analyze reliability and failure rate of EHSV with considering the common cause failures is proposed. It is observed from the study that the failure rate of the EHSV with CCF is lower than the failure rate without considering CCF.

PL

Serwozawory elektrohydrauliczne (EHSV) mają szerokie zastosowanie w wielu dziedzinach inżynierii. Ich niezawodność ma decydujące znaczenie dla niezawodności i bezpieczeństwa całych układów sterowania serwomechanizmami. W celu analizy i oceny niezawodności zaworów EHSV, w pracy przedstawiono najpierw ich budowę fizyczną i zasadę działania. Następnie przeprowadzono analizę przyczyn, skutków i krytyczności uszkodzeń (FMECA). Na podstawie tej analizy określono uszkodzenia zaworu EHSV spowodowane wspólną przyczyną (CCF). Wreszcie, zaproponowano metodę, za pomocą której można ilościowo analizować niezawodność i awaryjność EHSV z uwzględnieniem uszkodzeń spowodowanych wspólną przyczyną. Badania wykazały, że awaryjność EHSV przy uwzględnieniu CCF jest niższa niż w wypadku nieuwzględnienia CCF.

Słowa kluczowe

EN

EHSV; common cause failures CCF; FMECA; β-factor model

PL

serwozawór elektrohydrauliczny (EHSV); uszkodzenia spowodowane wspólną przyczyną CCF; analiza przyczyn; skutków i krytyczności uszkodzeń (FMECA); model współczynnika β

• Wydawca: Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne
• Czasopismo: Eksploatacja i Niezawodność
• Rocznik: 2014
• Tom: Vol. 16, no. 3
• Strony: 354--359
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Yang Y.-J.

• School of Mechanical, Electronic, and Industrial Engineering, University of Electronic Science and Technology of China No. 2006, Xiyuan Avenue, West Hi-Tech Zone, Chengdu Sichuan, 611731 P. R. China

autor

Huang H.-Z.

• School of Mechanical, Electronic, and Industrial Engineering, University of Electronic Science and Technology of China No. 2006, Xiyuan Avenue, West Hi-Tech Zone, Chengdu Sichuan, 611731 P. R. China

autor

Liu Y.

• School of Mechanical, Electronic, and Industrial Engineering, University of Electronic Science and Technology of China No. 2006, Xiyuan Avenue, West Hi-Tech Zone, Chengdu Sichuan, 611731 P. R. China

autor

Zhu S.-P.

• School of Mechanical, Electronic, and Industrial Engineering, University of Electronic Science and Technology of China No. 2006, Xiyuan Avenue, West Hi-Tech Zone, Chengdu Sichuan, 611731 P. R. China

autor

Peng W.

• School of Mechanical, Electronic, and Industrial Engineering, University of Electronic Science and Technology of China No. 2006, Xiyuan Avenue, West Hi-Tech Zone, Chengdu Sichuan, 611731 P. R. China

Bibliografia

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