| 机载往复密封二元时变相关退化建模与可靠度评估 |
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| 引用本文： | 柏文峰,洪黎,张超,钱于杰. 机载往复密封二元时变相关退化建模与可靠度评估[J]. 液压与气动, 2022, 0(2): 31-38. DOI: 10.11832/j.issn.1000-4858.2022.02.005 |
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| 作者姓名： | 柏文峰 洪黎 张超 钱于杰 |
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| 作者单位： | 1.中国航发控制系统研究所, 江苏无锡 214100; 2.北京航空航天大学自动化科学与电气工程学院, 北京 100191 |
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| 基金项目： | 国家自然科学基金(51875015)。 |
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| 摘 要： | 往复密封件作为机载液压作动器的重要组成部分,对飞行安全有着重要的影响.机载往复密封件承受着高压、宽温、变载荷、强振动等机载工况,多场耦合作用下其失效机理复杂,现有数值模型难以完全揭示其失效机理.在基于自回归滑动平均(Auto-Regressive Moving Average,ARMA)模型的机载往复密封二元时变相关退...
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| 关 键 词： | 往复密封 维纳过程 Copula函数 ARMA 可靠度评估 |
| 收稿时间： | 2021-05-10 |
Dual Time-varying Correlation Degradation Modeling and Reliability Evaluation of Airborne Reciprocating Seals |
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| BAI Wen-feng,HONG Li,ZHANG Chao,QIAN Yu-jie. Dual Time-varying Correlation Degradation Modeling and Reliability Evaluation of Airborne Reciprocating Seals[J]. Chinese Hydraulics & Pneumatics, 2022, 0(2): 31-38. DOI: 10.11832/j.issn.1000-4858.2022.02.005 |
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| Authors: | BAI Wen-feng HONG Li ZHANG Chao QIAN Yu-jie |
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| Affiliation: | 1. AECC Aero-Engine Control System Institute, Wuxi, Jiangsu 214100; 2. School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191 |
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| Abstract: | Reciprocating seals are an important part of aircraft hydraulic actuators and have an important impact on flight safety.Airborne reciprocating seals have complex failure mechanisms under various working conditions such as high pressure,wide temperature,variable load,and strong vibration.The existing numerical models are difficult to fully reveal the failure mechanism.An ARMA-based dual time-waring correlation degradation model for airborne reciprocating seals is proposed.Firstly,the degradation processes of the reciprocating seal friction and leakage are described based on the Wiener process.The Copula function is used to link the correlation between the two performance degradation indicators.And the ARMA model is used to characterize the time-varying correlation coefficient.A two-stage Bayesian method is used to estimate the parameters in this model.Finally,the reciprocating seal test device is introduced and the test data verifies the accuracy of the proposed reciprocating seal degradation model. |
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| Keywords: | reciprocating seal Wiener process Copula function ARMA reliability evaluation |
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