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讨论了灰色关联度分析法在全封闭小型压缩机状态检测中应用的有关问题；提出了灰色关联度法在多参数故障诊断中应用时特征参数的选择及处理方法．通过压缩机诊断实例说明了灰色关联度法的使用效果，并在与其它诊断方法比较的基础上，总结了灰色关联度法的特点．
The relevant problems of the application of gray relational analysis in the state detection of fully enclosed small compressors are discussed. The selection and processing method of the characteristic parameters when applying the gray relational degree method to multi-parameter fault diagnosis are proposed. The compressor diagnosis example is used to illustrate the effect of using the gray relational degree method. Based on the comparison with other diagnostic methods, the characteristics of the gray relational degree method are summarized.