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

<div>EMD results of response signals of three types of piezoelectric patches when noise signals are added: (a) normal piezoelectric patch; (b) broken piezoelectric patch; (c) degummed piezoelectric patch.</div>

Shock and Vibration

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Figure 9

Figure 9: Fault Diagnosis of Piezoelectric Sensor Patches for Vibration Control Based on Multifeature Fusion and Improved SVM 