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复数三阶累量具有不同的定义形式,定义形式不同,其耦合性质也不相同,则由其产生的复数累量切片也包含了信号间不同的耦合信息,实验中利用这些不同的定义方式,对特定的故障信号和正常信号同时采用相同的耦合方式进行故障判别。同时定义了复数三阶累量切片谱,通过切片谱对正常信号和故障信号的耦合特征进行了分析。实验结果表明,随着耦合方式的不同,同一故障的诊断正确率也不相同,从而为特定的故障判别提供了一种可供选择的方法。
The complex third-order cumulants have different definition forms, different definition forms and different coupling properties, and the complex quantitative slices generated by them also contain different coupling information between signals. In the experiment, these different definitions , The same fault signal and normal signal using the same coupling method for fault identification. At the same time, the complex third-order cumulant slice spectrum is defined, and the coupling characteristics of normal signal and fault signal are analyzed through the slice spectrum. Experimental results show that with the different coupling methods, the same fault diagnosis accuracy is not the same, which provides an alternative method for the specific fault identification.