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

<div>Piezoelectric wafer distribution: (a) normal piezoelectric patch 1 on the front; (b) broken piezoelectric patch 2 on the reverse side; (c) normal piezoelectric patch 3 on the front; (d) degummed piezoelectric patch 4 on the reverse side.</div>

Shock and Vibration

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Figure 3

Figure 3: Fault Diagnosis of Piezoelectric Sensor Patches for Vibration Control Based on Multifeature Fusion and Improved SVM 