Application of Adaptive Local Iterative Filtering and Permutation Entropy in Gear Fault Recognition

Figure 5

Decomposition results of medium-worn signal by adaptive local iterative filtering: (a) IMF1; (b) IMF2; (c) IMF3; (d) IMF4; (e) IMF5; (f) IMF6; (g) IMF7; (h) IMF8; (i) Ra.

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