Rolling Bearing Fault Diagnosis Method Based on Multisynchrosqueezing S Transform and Faster Dictionary Learning

Figure 5

Time-frequency images of different frequency analysis methods: (a) raw signal; (b) STFT; (c) ST; (d) WVT; (e) SSST; (f) MSST; (g) MSSST.

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(b)

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(e)

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(g)