Title :
An approach to ultrasonic fault machinery monitoring by using the wigner-ville and choi-williams distributions
Author :
Escobar-Moreira, Leon A.
Author_Institution :
Norbert Wiener Center of Harmonic Anal. & Applic., Univ. of Maryland, College Park, MD
Abstract :
The present work shows that the Wigner-Ville and Choi-Williams distributions are useful to determine the proper operation of rotating axes driven by motors and speed controllers. The bearing diagnosis obtained by analyzing real sound samples using phase-array ultrasonic technology will be discussed to highlight the importance of the proposed tools for industrial machinery monitoring.
Keywords :
fault diagnosis; machine testing; ultrasonic measurement; Choi-Williams distributions; Wigner-Ville distributions; bearing diagnosis; industrial machinery monitoring; motors; phase-array ultrasonic technology; speed controllers; ultrasonic fault machinery monitoring; Condition monitoring; Costs; Distributed computing; Educational institutions; Energy resolution; Fourier transforms; Harmonic analysis; Machinery; Signal resolution; Time frequency analysis;
Conference_Titel :
Electrical Machines, 2008. ICEM 2008. 18th International Conference on
Conference_Location :
Vilamoura
Print_ISBN :
978-1-4244-1735-3
Electronic_ISBN :
978-1-4244-1736-0
DOI :
10.1109/ICELMACH.2008.4800101
