航空学报 > 2012, Vol. Issue (5): 848-854   doi: CNKI:11-1929/V.20120201.0944.010

部分可观测信息条件下装备剩余寿命预测

尚永爽1,2, 李文海1, 刘长捷3, 盛沛1   

  1. 1. 海军航空工程学院 科研部, 山东 烟台 264001;
    2. 中国人民解放军 95992部队, 北京 100162;
    3. 空军航空大学 基础部, 吉林 长春 130022
  • 收稿日期:2011-06-22 修回日期:2011-12-16 出版日期:2012-05-25 发布日期:2012-05-24
  • 通讯作者: 李文海,Tel.: 0535-6635836 E-mail: ythylwh@vip.163.com E-mail:ythylwh@vip.163.com
  • 基金资助:
    武器装备预研基金(9140A25070208JB1402)

Prediction of Remaining Useful Life for Equipment with Partially Observed Information

SHANG Yongshuang1,2, LI Wenhai1, LIU Changjie3, SHENG Pei1   

  1. 1. Department of Scientific Research, Naval Aeronautical and Astronautical University, Yantai 264001, China;
    2. No.95992 Unit, The Chinese People’s Liberation Army of China, Beijing 100162, China;
    3. Department of Basic Sciences, Aviation University of Air Force, Changchun 130022, China
  • Received:2011-06-22 Revised:2011-12-16 Online:2012-05-25 Published:2012-05-24
  • Supported by:
    Weapon Equipment Advanced Research Foundation of PLA (9140A25070208JB1402)

摘要: 针对部分可观测信息条件下退化系统的剩余寿命(RUL)预测问题,综合利用装备的历史寿命信息和性能退化信息,采用隐马尔可夫模型(HMM)对系统进行状态评估,得到系统的转移概率矩阵和观测概率矩阵;采用Bayes方法不断更新系统状态空间的条件概率分布;利用比例故障率模型(PHM)对系统进行可靠性分析,得到系统的故障率和可靠度函数,进而得到装备的剩余寿命分布。研究表明,该方法可较准确地预测装备的剩余寿命,为保障人员提供科学的维修决策依据。

关键词: 视情维修, 剩余寿命, 隐马尔可夫模型, 比例故障率模型, 预测

Abstract: In order to predict the remaining useful life (RUL) for a degraded system with partially observed information, the historical lifetime data and performance degradation data are fused together. Firstly, the hidden Markov model (HHM) is used for state evaluation to get the transition probability matrix and observation probability matrix of the system. Secondly, the Bayesian method is used to renew continually the conditional probability distribution of the equipment’s state. Then, a proportional hazards model (PHM) is used for reliability analysis to get the failure rate and reliability functions of the system. The remaining useful life distribution for the equipment is thus obtained. Case study indicates that the method can improve prediction precision effectively, which can help provide logistics personnel with a scientific basis for maintenance decision making.

Key words: condition based maintenance, remaining useful life, hidden Markov model, proportional hazards model, prediction

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