【摘要】 本文首先分析了几种多参数故障诊断方法的特点，进而从故障诊断的角度，分析比较了多参数故障诊断的多数样本与灰色关联度原始定义的数据样本的特点差异，提出了模糊关联度的概念；实测数据检验结果表明：模糊关联度分析比灰色关联度分析诊断准确度高，具有很好的应用前景。更多还原

【Abstract】 his paper first analyses the features of several multi-parameter fault diagnostic methds,By comparms the differenee between paranieter samples for fault diagnosis and original defined datasamples of grey relational degree (GRD),the concept of fuzzy relational degree(FRD)is proposed.The tested results show that the fuzzy relational degree method is more efficient than that of grey rela-tional degree method and has great propects.更多还原