基于研制试验数据的可靠性综合评估方法

Method on Integrated Evaluation of Reliability Based on Development Test Data

针对产品在研制阶段的试验项目多、时间短、样本少等特点,在可靠性增长Duane模型的基础上,提出一种基于研制阶段变母体变环境试验数据的可靠性综合评估方法与模型。考虑不同试验应力环境对产品的影响,引入环境折合系数,根据相似产品试验数据,采用综合考虑了增长趋势检验约束和增长模型检验约束的寻优方法求解环境折合系数,利用折合后的数据进行可靠综合评估。通过实例证明了该方法的工程实用性。

Aim at the feature of more items,shorter time and fewer stylebooks in the test of development stage,the paper puts forward a method on integrated evaluation of reliability based on the reliability growth model of Duane and the test data of various population-environment. Given the affect of the different test stress environment to the product,the environment conversion factors is introduced and is seek out through seeking optimization method which take the restriction of growth trend test and growth model test into consideration. The conversion data is used to evaluate the reliability. The engineering practicability of the method is verified by an example.