Life Evaluation Of Electro-hydraulic Servo Valve Based On Wear Mechanism

被引：3
|
作者：
Wang Xiaohong [1 ]
Li Qiuxi [1 ]
Feng Yali [1 ]
机构：
[1] Beihang Univ, Sch Reliabil & Syst Engn, Beijing 100191, Peoples R China
来源：
CURRENT DEVELOPMENT OF MECHANICAL ENGINEERING AND ENERGY, PTS 1 AND 2 | 2014年 / 494-495卷
关键词：
Electra-hydraulic servo valve; SSADT; Life evaluation; Reliability analysis;
D O I：
10.4028/www.scientific.net/AMM.494-495.739
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
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.
引用
收藏
页码：739 / 742
页数：4
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