Life prediction and test period optimization research based on small sample reliability test of hydraulic pumps

作     者：郭锐 Ning Chao Zhao Jingyi Wang Ping Shi Yu Zhou Jinsheng Luo Jing 

作者机构：Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and ControlYanshan UniversityKey Laboratory of Advanced Forging&Stamping Technology and Science(Yanshan University)Qinhuangdao 066004P.R.China Huachuang Tianyuan Industrial Developing Co.LtdLangfang 065000P.R.China College of Art and DesignYanshan UniversityQinhuangdao 066004P.R.China Beijing Research Institute of Automation for Machinery IndustryBeijing 100120P.R.China 

出 版 物：《High Technology Letters》 (高技术通讯（英文版）)

年 卷 期：2017年第23卷第1期

页      面：63-70页

核心收录：

学科分类：08[工学] 0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 0810[工学-信息与通信工程] 1205[管理学-图书情报与档案管理] 080401[工学-精密仪器及机械] 0807[工学-动力工程及工程热物理] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0836[工学-生物工程] 0811[工学-控制科学与工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China(No.51405424,11673040) the Special Scientific Research Fund of Public Welfare for Quality Inspection(No.201510202) 

主　　题：可靠性试验台 试验周期 约束优化 寿命预测 液压泵 小样本 非参数假设检验 采样周期 

摘      要：Hydraulic pumps belong to reliable long-life hydraulic components. The reliability evaluation includes characters such as long test period,high cost,and high power loss and so on. Based on the principle of energy-saving and power recovery,a small sample hydraulic pump reliability test rig is built,and the service life of hydraulic pump is predicted,and then the sampling period of reliability test is optimized. On the basis of considering the performance degradation mechanism of hydraulic pump,the feature information of degradation distribution of hydraulic pump volumetric efficiency during the test is collected,so an optimal degradation path model of feature information is selected from the aspect of fitting accuracy,and pseudo life data are obtained. Then a small sample reliability test of period constrained optimization search strategy for hydraulic pump is constructed to solve the optimization problem of the test sampling period and tightening end threshold,and it is verified that the accuracy of the minimum sampling period by the non-parametric hypothes is tested. Simulation result shows it could possess instructional significance and referenced value for hydraulic pump reliability life evaluation and the test s research and design.