摘要
针对液体火箭发动机热试车过程中可能出现的无失效情况,在对寿命分布进行分析的基础上,确定了失效概率的多层先验分布,并给出了其Bayes估计。然后用最小二乘法给出寿命分布的参数估计,进而得到可靠度估计。最后通过随机模拟,讨论了文中c值的选取问题,证明了方法的可行性。
In the progress of the trial run of liquid rocket engine, the situation of zero-failure data may happen. For zero-failure data, the hierarchical prior distributions and Bayes estimates of various failure probabilities are presented based on the analysis of the life distribution. Then the LS method is used to estimate the parameters of the life distribution and reliability of life distribution is given. Finally, the choice of c values is discussed in the paper by an actual example and simulation, and the results show the method given in the paper is feasible.
出处
《航天控制》
CSCD
北大核心
2008年第3期88-91,共4页
Aerospace Control
基金
国家自然科学基金资助项目(70471057)
