针对目前小子样产品可靠性评价中存在的问题，本文提出了符合工程实际的多指标综合评价方法。针对评价中存在大量的小子样试验数据、模糊现象和模糊概念，本文采用基于熵权理论的模糊综合评价方法进行定量处理，利用专家评价的主观权值和熵权客观权值相结合的综合度量值，确定各指标权重。本文以国产两种型号电磁流量计为研究对象，对使用期获得的定时截尾数据进行了系统分析，采用基于熵权理论的模糊综合评价法分别对2种产品水平做了可靠性评价。结果表明，该方法正确有效且与工程实际相符，能有助于解决当前产品可靠性建模和评估工作中的问题，具有广泛的工程应用价值。%With regard to the problem in reliability evaluation of sub - sample products, a suitable comprehensive evaluation method was presented in this paper. Because many evaluation elements involved and failure information and e-valuation indexes are fuzzy, the fuzzy comprehensive evaluation method based on entropy - weight theory was introduced to quantify the qualitative evaluation indexes, and indexes weight were determined scientifically by using comprehensive evaluation obtained from combining a subjective expert' s evaluation weight with objective entropy weight. Two kinds of the domestically produced electromagnetic flowmeter were studied, the censored data obtained from the process of consumers' s use were analyzed, and fuzzy comprehensive evaluation method based on entropy weight was used to evaluate the indexes of reliability in two kinds of electromagnetic flowmeter comprehensively. The result shows that the conclusion is consistent with the fact, in addition the method can effectively solve the problem existed in current modeling, and is effective for engineering application.
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