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针对产品研制过程中存在多阶段的试验数据和产品性能参数呈现可靠性增长的特点,提出了一种变总体可靠性试验鉴定方法,该方法依据产品研制过程中不同总体的试验数据,利用可靠性增长模型,给出变总体试验信息似然比的定义和判决准则,进而给出变总体可靠性试验鉴定方法.通过实例对比分析,该方法可较好地解决小子样产品可靠性指标的假设检验问题.
Aiming at the existence of multi-stage test data in product development process and the fact that product performance parameters exhibit reliability growth, a method of overall reliability test identification is proposed. According to the different overall test data during product development, the method utilizes reliability Growth model to give the definition and judgment criteria of the likelihood ratio of the overall test information, and then give the method of changing the overall reliability test. By comparative analysis of examples, this method can better solve the hypothesis test of the reliability index of small sample products problem.