多元判别分析在事物的分类判别中应用很广泛,该文提出了一种以密闭爆发器试验数据为基础,应用多元判别法判定国储发射药的质量等级的方法。对8批不同储存期11/7火药的质量判定结果与实际完全一致。这种方法可用于库存发射药的质量跟踪监测、考察其弹道性能随贮存期的变化规律、判定发射药质量等级的变化。 Multivariate discriminant analysis is widely used in the classification and identification of things. This paper presents a method to determine the quality level of the national drug propellant using the multiple discriminant method based on the experimental data of the closed bomb. The quality judgment results of 8 batches of 11/7 gunpowder with different storage periods are exactly the same with the actual ones. This method can be used to track the quality of the propellant in stock and examine the variation of its trajectory with the storage period to determine the change of the propellant quality level.