环境技术

本文研究机电产品与火工品组成的复杂系统可靠性综合评估方法。提出可靠度服从指数分布的机电产品平均无故障工作时间（MTBF）转换为二项分布试验数的单侧置信下限等效方法。分析5种经典的成败型串联系统可靠性综合评估方法，尤其是在小子样零失效情况下，比较其优劣势。以某机电引信为例，分别构造机电引信每个分系统大子样和小子样可靠性成败型数据，应用5种经典的成败型串联系统可靠性综合评估方法进行评估计算。机电产品与火工品组成的复杂系统的可靠性综合评估方法中，尤其对于小子样零失效的成败型串联系统，CMSR法的评估精度更高。

This paper studies the comprehensive reliability evaluation method for complex systems composed of electromechanical products and pyrotechnic devices. This paper proposes an equivalent method for converting the MTBF(Mean Time Between Failure) of electromechanical products, whose reliability follows an exponential distribution, into a one-sided confidence lower bound for binomial distribution test counts. Analyze five classic comprehensive evaluation methods for the reliability of series systems with success-failure types, especially under the condition of small sample size and zero failure, and compare their advantages and disadvantages. Taking a certain electromechanical fuse as an example, construct reliability pass-fail data for each subsystem of the electromechanical fuse with large and small samples, and apply five classic pass-fail series system reliability comprehensive evaluation methods for evaluation and calculation. In the comprehensive reliability evaluation method for complex systems composed of electromechanical products and pyrotechnic devices, especially for small-sample zero-failure pass-fail series systems, the CMSR method has higher evaluation accuracy.