Zhejiang Daxue xuebao. Lixue ban (Nov 2017)

Statistical analysis of two-parameter Birnbaum-Saunders fatigue life distribution under full sample(全样本场合下两参数Birnbaum-Saunders疲劳寿命分布的统计分析)

  • XUXiaoling(徐晓岭),
  • WANGRonghua(王蓉华),
  • GUBeiqing(顾蓓青)

DOI
https://doi.org/10.3785/j.issn.1008-9497.2017.06.008
Journal volume & issue
Vol. 44, no. 6
pp. 692 – 704

Abstract

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通过对数变换给出了求两参数Birnbaum-Saunders(BS)疲劳寿命分布BS(α,β)在全样本场合下参数的对数矩估计,并通过大量Monte-Carlo模拟比较了各种点估计方法的精度.基于对数变换通过一阶泰勒展开,将两参数BS疲劳寿命分布BS(α,β)近似看作两参数对数正态分布,由此得到了2个参数α,β的近似区间估计,通过Monte-Carlo模拟发现,所给出的近似方法比原有方法更精确.最后通过若干实例说明了方法的可行性.

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