Life Evaluation of Electro-Hydraulic Servo Valve Based on Wear Mechanism

Xiao Hong Wang; Qiu Xi Li; Ya Li Feng

doi:10.4028/www.scientific.net/AMM.494-495.739

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 494-495Life Evaluation of Electro-Hydraulic Servo Valve...

Life Evaluation of Electro-Hydraulic Servo Valve Based on Wear Mechanism

Abstract:

Electro-hydraulic servo valve is the key component in electro-hydraulic servo control system, it has high reliable assemblies over a long period of time. This paper utilizes the accelerated degradation testing to evaluate their reliability and life. Firstly, the wear failure mechanism of electro-hydraulic servo valve is analyzed to determine. Then, by modeling the degradation process as a drift Brown Motion, this paper generated the reliability model of the electro-hydraulic servo valve. Finally, the maximum likelihood is used to estimate the degradation data of leakage from the test. The methodology in this paper is demonstrated and validated by reasonability of estimation of electro-hydraulic servo valve.

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Periodical:

Applied Mechanics and Materials (Volumes 494-495)

Pages:

739-742

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.494-495.739

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Online since:

February 2014

Authors:

Xiao Hong Wang, Qiu Xi Li*, Ya Li Feng

Keywords:

Electro-Hydraulic Servo Valve, Life Evaluation, Reliability Analysis, SSADT

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* - Corresponding Author

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