基于加速寿命试验方法的伺服阀污染卡滞寿命分析  

Analysis of Fouling and Sticking Life of Servo Valve Based on Accelerated Life Test Method

作　　者：王洪波 黄智鹏 张向英 曹瑞康 徐悦鹏 孔祥东[2] WANG Hong-bo;HUANG Zhi-peng;ZHANG Xiang-ying;CAO Rui-kang;XU Yue-peng;KONG Xiang-dong(Qing'an Group Co. , Ltd. , Shaanxi, Xi'an 710077;School of Mechanical Engineering, Yanshan University, Qinhuangdao, Hebei 066004)

机构地区：[1]庆安集团有限公司,陕西西安710077 [2]燕山大学机械工程学院,河北秦皇岛066004

出　　处：《液压与气动》2022年第7期131-135,共5页Chinese Hydraulics & Pneumatics

基　　金：国防科工局军用基础机电产品科研项目(5140095)。

摘　　要：电液伺服阀因具有可靠性高、寿命长等特点而被广泛应用在飞机液压系统中,作为核心控制元件在系统中起电液转换和功率放大作用。在电液伺服阀服役期间油液污染会对整个阀的性能造成影响并大大降低使用寿命。针对此问题,分析了电液伺服阀的卡滞失效模式,得到不同尺寸颗粒的污染卡滞敏感度,利用加速试验方法,确定加速因子,采用污染卡滞加速寿命模型对不同污染度等级下电液伺服阀进行寿命评估。Electro-hydraulic servo valve is widely used in aircraft hydraulic system because of its high reliability and long service life.As the core control element,it plays the role of electro-hydraulic conversion and power amplification in the system.During the service of electro-hydraulic servo valve,oil pollution will affect the performance of the whole valve and greatly.To solve this problem,the stuck failure mode of electro-hydraulic servo valve is analyzed,and the pollution stuck sensitivity of particles with different sizes is obtained in this paper.The acceleration factor is determined by using the accelerated test method,and the pollution stuck accelerated life model is used to evaluate the life of electro-hydraulic servo valve under different pollution levels.

关 键 词：电液伺服阀 加速寿命试验 污染卡滞 

分 类 号：TH137[机械工程—机械制造及自动化] TH134