基于优化变分模态分解的磁瓦内部缺陷检测

冉茂霞,黄沁元,刘鑫,宋弘,吴浩

Internal defect detection of arc magnets based on optimized variational mode decomposition

Mao-xia RAN,Qin-yuan HUANG,Xin LIU,Hong SONG,Hao WU

表 3 4种样本的VMD模态平均能量归一化

Tab.3 Normalized mean energies of VMD modes from four types of arc magnet samples

样本 ENM 模态1 模态2 模态3 模态4 模态5 模态6 A 0.007 0.036 1.000 0.198 0.032 − B 0.009 0.032 1.000 0.516 0.046 − C 0.018 0.014 0.043 0.035 0.902 1.000 D 0.063 0.328 1.000 − − −