Fault Diagnosis of Piezoelectric Sensor Patches for Vibration Control Based on Multifeature Fusion and Improved SVM

<div>Hilbert marginal spectrum of three types of piezoelectric patch signals: (a) normal piezoelectric patch; (b) broken piezoelectric patch; (c) degummed piezoelectric patch.</div>

Shock and Vibration

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Figure 5

Figure 5: Fault Diagnosis of Piezoelectric Sensor Patches for Vibration Control Based on Multifeature Fusion and Improved SVM 