2pSPb3. Acquisition of FM waveform parameters from vibration of rotational machine elements using FM wavelet template matching.

Session: Tuesday Afternoon, May 14

Time: 2:45

Author: Michael B. Van Dyke
Author: David C. Swanson
Author: Karl M. Reichard
Location: Appl. Res. Lab., Penn State Univ., P.O. Box 30, State College, PA 16801


Vibration signals obtained from rotating machinery exhibit frequency modulated components resulting from torque variations due to wear and irregularities in the elements. The characteristic shape of the FM signal and degree of modulation can be useful metrics for the determination of the nature and extent of element degradation. A nonorthogonal FM wavelet template matching technique is used to quantify these parameters. Results are compared with FM waveforms obtained by signal demodulation, demonstrating fairly good accuracy.

from ASA 131st Meeting, Indianapolis, May 1996