Apparatus and a method for analyzing the vibration of a machine having a rotating part

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United States of America Patent

PATENT NO 9964430
APP PUB NO 20120072136A1
SERIAL NO

13258729

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Abstract

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An apparatus for analyzing the condition of a machine having a part rotatable with a speed of rotation, includes

    an input for receiving an analog measurement signal indicative of a vibration signal signature having a vibration frequency and a repetition frequency;an A/D converter for generating a digital measurement signal dependent on the analog measurement signal, the digital measurement signal having a first sample rate, which is at least twice the vibration frequency;an enveloper for generating an enveloped signal indicative of the repetition frequency;a decimator for generating a decimated first digital signal dependent on the enveloped signal such that the decimated first digital signal has a reduced sample rate;an enhancer having an input for receiving the decimated signal, wherein the enhancer operates in the time domain to perform discrete autocorrelation for the decimated first digital signal so as to generate an enhancer output signal sequence; andan analyzer for performing a condition monitoring function so as to analyze the condition of the machine dependent on the output signal sequence.

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Patent Owner(s)

Patent OwnerAddress
S P M INSTRUMENT ABBOX 504 645 25 STRÄNGNÄS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hedin, Lars-Olov Elis Hallstahammar, SE 24 272

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