Sequential compliance test method for lognormal distribution
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摘要: 借鉴指数分布寿命型序贯验证试验方案的思想,讨论了以平均寿命为指标的对数正态分布寿命型产品序贯验证试验的制定方法,给出了序贯试验的试验程序,研究了截尾状态下序贯试验的生产方风险和使用方风险的上限.基于工程实际的抽样方法,给出了计算机仿真评价方法,对给出的序贯试验方案进行评价.评价结果表明,在样本量和截尾数满足要求的前提下,所提出的序贯验证试验方法能够满足对双方风险的控制要求,且对使用方风险提供了更大的保护.Abstract: Using the experience of sequential verification test program in exponential distribution for reference, the method of making the sequential verification test program in lognormal distribution was discussed, which takes the average life as an indicator. The test procedure of sequential test was provided, and the upper limit value of the producer and consumer risks were studied under censoring. According to the sampling method in practical engineering, the simulation method was proposed to evaluate the above mentioned test program. Evaluation results indicate that the proposed sequential verification test program can meet the requirements of controlling both sides of risk on the premise of satisfying the requirement of sample and censored size. And the consumer’s risk is lower than the expected value.
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Key words:
- lognormal distribution /
- compliance test /
- sequential test /
- producer’ risk /
- consumer’s risk
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