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Frequency-Tracking-Error DetectorFrequency-tracking-error detector compares average period of output signal from band-pass tracking filter with average period of signal of frequency 100 f(sub 0) that controls center frequency f(sub 0) of tracking filter. Measures difference between f(sub 0) and frequency of one of periodic components in output of bearing sensor. Bearing sensor is accelerometer, strain gauge, or deflectometer mounted on bearing housing. Detector part of system of electronic equipment used to measure vibrations in bearings in rotating machinery.
Document ID
19900000391
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Randall, Richard L.
(Rockwell International Corp.)
Date Acquired
August 14, 2013
Publication Date
August 1, 1990
Publication Information
Publication: NASA Tech Briefs
Volume: 14
Issue: 8
ISSN: 0145-319X
Subject Category
Electronic Systems
Report/Patent Number
MFS-29538
Accession Number
90B10391
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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