Fault Diagnosis of Wheel Flat Using Empirical Mode Decomposition-Hilbert Envelope Spectrum

<div>Hilbert envelope spectrum based on EMD with single flat having different speeds. (a) Hilbert envelope spectrum of IMF1 with different vehicle speeds. (b) The sum of Hilbert envelope spectrum of IMF1-IMF3 with different vehicle speeds.</div>

Mathematical Problems in Engineering

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Figure 7

Figure 7: Fault Diagnosis of Wheel Flat Using Empirical Mode Decomposition-Hilbert Envelope Spectrum 