航空装备现场数据可靠性评估方法有效性分析
收稿日期: 2013-07-23
修回日期: 2013-08-26
网络出版日期: 2013-08-27
基金资助
国家自然科学基金（51201182）；陕西省软科学技术基金（2011KRM122）
Validity Analysis of Reliability Evaluation Method in Aviation Equipment Field Data
Received date: 2013-07-23
Revised date: 2013-08-26
Online published: 2013-08-27
Supported by
National Natural Science Foundation of China (51201182); Soft Science Technology Foundation of Shannxi (2011KRM122)
沈安慰 , 郭基联 , 王卓健 . 航空装备现场数据可靠性评估方法有效性分析[J]. 航空学报, 2014 , 35(5) : 1311 -1318 . DOI: 10.7527/S1000-6893.2013.0373
Application scope and validity of mean rank order method and expectation maximun (EM) algorithm are analyzed for the problem of high reliability aviation product of small sample sizes and random censoring. Considering the case of maintenance, a reliability assessment simulation method is designed based on the Monte Carlo method. Random censoring observations of aviation equipment are simulated through the dynamic changes of flight years, aircraft numbers, and daily utilization rate with the example of Weilbull distribution. Thus the validity of mean rank order method and EM algorithm are assessed through the changes of sample size and censoring rate. The simulation results show that EM algorithm should be preferred in parameter estimation of small sample and random censoring when the sample size is in the range of 10 to 30.
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