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Proceedings Paper

Digital Demodulation Of Noise Contaminated Rotational Speed Variations
Author(s): Cheng-Yuan Liou; Chih-Chiang Chang
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Paper Abstract

Since the variations of rotational speeds can provide significant information in diagnosing a rotating machine. Substantial effort has been expended in attempts to find the detailed variations of speeds. Speed variations have been estimated with varying degrees of success. A portion of the effort has been motivated by active research and development of monitoring systems for turbines and oil-drilling rods. The viability to accurately estimate small variations using noise contaminated records can be done by constructing a modified digital demodulation scheme.

Paper Details

Date Published: 1 January 1987
PDF: 5 pages
Proc. SPIE 0858, Signal Acquisition and Processing, (1 January 1987); doi: 10.1117/12.968271
Show Author Affiliations
Cheng-Yuan Liou, National Taiwan University (Taiwan)
Chih-Chiang Chang, National Taiwan University (Taiwan)


Published in SPIE Proceedings Vol. 0858:
Signal Acquisition and Processing
Russell J. Niederjohn, Editor(s)

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