| 考虑时变环境的基于设备退化的剩余寿命估计 |
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| 引用本文： | 禄晓飞,周东华,杨红兵.考虑时变环境的基于设备退化的剩余寿命估计[J].南京航空航天大学学报,2011(Z1). |
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| 作者姓名： | 禄晓飞 周东华 杨红兵 |
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| 作者单位： | 清华大学自动化系;中国酒泉卫星发射中心; |
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| 基金项目： | 国家自然科学基金(60931160440,61028010)资助项目 |
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| 摘 要： | 进行剩余寿命估计时,需要考虑设备运行环境的作用。退化率模型是刻画外部环境对设备退化影响的一种重要模型,退化率模型分为两种:第一种是设备退化率只由外部环境状态决定,第二种是设备退化率是运行时间和外部环境的函数。本文总结了基于退化率模型的剩余寿命估计方法;指出了当外部环境用马尔科夫跳变过程描述时,利用第一种退化率模型进行剩余寿命估计中存在的问题,并举例说明;最后给出了用蒙特卡洛仿真计算基于第二种退化率模型的剩余寿命估计的方法,结果合理。
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| 关 键 词： | 退化率 时变环境 外部协变量 剩余寿命分布 |
Residual Life Estimation Based on Degradation of Device in Time Variant Environment |
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| Lu Xiaofei,Zhou Donghua,Yang Hongbing.Residual Life Estimation Based on Degradation of Device in Time Variant Environment[J].Journal of Nanjing University of Aeronautics & Astronautics,2011(Z1). |
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| Authors: | Lu Xiaofei Zhou Donghua Yang Hongbing |
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| Institution: | Lu Xiaofei1,2,Zhou Donghua1,Yang Hongbing2(1.Department of Automation,Tsinghua University,Beijing,100084,China,2.Jiuquan Satellite Launch Center,Jiuquan,732750,China) |
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| Abstract: | It is necessary to consider the external environment when computing residual life distrubiton of device.Degradation rate model is one key method to show the relationship between environment and degradation.Degradation model can be classified into two kinds,the first is that the degradation rate is decided only by external environment;the second is that the degradation rate is decided by both the external environment and operation time.The methods of estimating the residual life distribution based on degrada... |
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| Keywords: | degradation rate time variant environment external covariate residual life distribution |
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