基于LS-SVM的恒定应力ALT非参数统计方法  

Nonparametric Approach of Constant Stress Accelerated Life Testing Based on LS-SVM

作　　者：谭源源[1] 张春华 陈循[1] 罗巍[1] 

机构地区：[1]国防科技大学机电工程与自动化学院机电工程研究所,长沙410073

出　　处：《宇航学报》2009年第4期1738-1743,共6页Journal of Astronautics

基　　金：国家部委资助项目(203020102)

摘　　要：针对某些产品寿命分布未知,无法采用参数方法对其加速寿命试验进行统计分析的问题,建立了基于LS-SVM的恒定应力ALT非参统计方法,实现了对产品可靠度的预测及相关可靠性特征量的统计。仿真对比和应用实例结果表明,该方法统计精度高,且易于编程实现,适用于寿命分布未知及截尾试验情况下的恒定应力ALT统计分析。Parametric methods can＇t be applied to analyze data from accelerated life testing, in the case of the life distributions of some products are unknown. Aiming at the deficiency, a nonparametrie approach of constant accelerated life testing based on LS-SVM is proposed, which can realize the prediction of products＇ reliability and the statistical analysis of life data. Simulation and case study shows that, the approach has the advantage of high precision and convenience for software realization. So it is suitable for statistical analysis in constant accelerated life testing, especially for the circumstances of life distribution is unknown and testing is censored.

关 键 词：加速寿命试验 非参数统计方法 支持向量机 最小二乘支持向量机 MONTE Carlo仿真 

分 类 号：TB114.3[理学—概率论与数理统计] TP181[理学—数学]