复三阶累积量耦合性质对故障诊断结果的影响  

The Impact of Complex Cumulants'conpling Properties on the Results of Fault Diagnosis

作　　者：吴文兵[1,2] 黄宜坚[3] 陈文芗[2] 

机构地区：[1]福州外语外贸学院,福州350202 [2]厦门大学信息科技学院,福建厦门361000 [3]华侨大学机电及自动化学院,福建泉州362021

出　　处：《机械设计与研究》2013年第3期14-17,共4页Machine Design And Research

基　　金：国家自然科学基金资助项目(50975098);厦门市科技计划资助项目(3502Z20123013)

摘　　要：复数三阶累积量具有不同的定义形式,定义形式不同,其包含的耦合信息也不相同。在复数累积量切片以及三阶对角累积量的基础上,定义了三阶累积量切片谱以及三阶对角累积量谱,实验中利用这两种谱的不同的耦合方式,通过计算容量维,对采集的故障信号和正常信号进行故障判别。实验结果表明,两种定义方式的谱,在不同的耦合方式下,对同一故障的诊断正确率结果类似,表明了影响故障诊断结果的不是谱的形式,而是其中包含的不同的耦合信息。Complex third-order cumulant has different definition forms. Different forms conclude different informa- tion. Based on three order cumulant slices and diagonal cumulants, complex third - order cumulgant slices spectrum and diagonal cumulant spectrum are defined. In experiments,using the different coupling modes,the capacity dimensions are caculated to diagnose faults. Experiments indicate, the two kinds of spectrum in different modes, the detection accuracy rates on the same fault are similar, thus, the experiments proved that the diagnosis result is not effected by different kinds of spectrum forms, but by the different coupling information included in the spectrum.

关 键 词：复数三阶累积量 耦合 容量维 故障诊断 

分 类 号：TH161[机械工程—机械制造及自动化]