Vibration Fault Diagnostics for Quality Control and Component Reuse

Vibration Fault Diagnostics for Quality Control and Component Reuse

Diagnostics of Electric Motors and Household Appliances using Laser Doppler Vibrometer

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Quality control of household appliances can be improved by replacing human inspection with automated analysis of vibration signals. This book presents vibration methods for diagnosing and prognosing mechanical faults in electric motors and washing machines. This includes pre-processing of raw vibration data for reducing measurement noise, such as speckle noise occurring when optically rough surfaces are measured by Laser Doppler Vibrometer (LDV). New algorithms for speckle noise reduction are presented, including kurtosis ratio and optical level thresholding. Application to real LDV data (meas...