Application of Choi—Williams Reduced Interference Time Frequency Distribution to Machinery Diagnostics
Abstract
This article discusses time frequency analysis of machinery diagnostic vibration signals. The short time Fourier transform, the Wigner, and the Choi–Williams distributions are explained and illustrated with test cases. Examples of Choi—Williams analyses of machinery vibration signals are presented. The analyses detect discontinuities in the signals and their timing, amplitude and frequency modulation, and the presence of different components in a vibration signal.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 01, 1995
- Source ID
- 10.1155/1995/721969
Entities
People
- Howard A. Gaberson
Organizations
- Naval Facilities Engineering Service Center
- Office of Naval Research