Analysis of periodic information in a signal

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United States of America Patent

PATENT NO 9791422
APP PUB NO 20150012247A1
SERIAL NO

14316883

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A “periodic signal parameter” (PSP) indicates periodic patterns in an autocorrelated vibration waveform and potential faults in a monitored machine. The PSP is calculated based on statistical measures derived from an autocorrelation waveform and characteristics of an associated vibration waveform. The PSP provides an indication of periodicity and a generalization of potential fault, whereas characteristics of the associated waveform indicate severity. A “periodic information plot” (PIP) is derived from a vibration signal processed using two analysis techniques to produce two X-Y graphs of the signal data that share a common X-axis. The PIP is created by correlating the Y-values on the two graphs based on the corresponding X-value. The amplitudes of Y-values in the PIP is derived from the two source graphs by multiplication, taking a ratio, averaging, or keeping the maximum value.

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Patent Owner(s)

  • COMPUTATIONAL SYSTEMS, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bowers,, III Stewart V Knoxville, US 22 196
Skeirik, Robert D Knoxville, US 6 205

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