APPARATUS AND METHOD FOR IDENTIFYING HEALTH INDICATORS FOR ROLLING ELEMENT BEARINGS
First Claim
1. A method comprising:
- receiving an input signal comprising information associated with at least one of;
a rolling element bearing and a piece of equipment containing the rolling element bearing;
decomposing the input signal into a frequency-domain signal;
determining at least one family of frequencies corresponding to at least one failure mode of the rolling element bearing;
generating a reconstructed input signal using the at least one family of frequencies and the frequency-domain signal; and
determining, using the reconstructed input signal, an indicator identifying an overall health of the rolling element bearing.
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Abstract
A method includes receiving an input signal containing information associated with a rolling element bearing and/or a piece of equipment containing the rolling element bearing. The method also includes decomposing the input signal into a frequency-domain signal and determining at least one family of frequencies corresponding to at least one failure mode of the rolling element bearing. The method further includes generating a reconstructed input signal using the at least one family of frequencies and the frequency-domain signal. In addition, the method includes determining, using the reconstructed input signal, an indicator identifying an overall health of the rolling element bearing. The indicator could be determined using a baseline signal associated with either (i) normal operation of the rolling element bearing and/or the piece of equipment or (ii) defective operation of the rolling element bearing and/or the piece of equipment (where a severity of the defective operation will increase over time).
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Citations
20 Claims
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1. A method comprising:
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receiving an input signal comprising information associated with at least one of;
a rolling element bearing and a piece of equipment containing the rolling element bearing;decomposing the input signal into a frequency-domain signal; determining at least one family of frequencies corresponding to at least one failure mode of the rolling element bearing; generating a reconstructed input signal using the at least one family of frequencies and the frequency-domain signal; and determining, using the reconstructed input signal, an indicator identifying an overall health of the rolling element bearing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus comprising:
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at least one interface configured to receive an input signal comprising information associated with at least one of;
a rolling element bearing and a piece of equipment containing the rolling element bearing; andat least one processing device configured to; decompose the input signal into a frequency-domain signal; determine a family of frequencies corresponding to a failure mode of the rolling element bearing; generate a reconstructed input signal using the family of frequencies and the frequency-domain signal; and determine, using the reconstructed input signal, a value identifying a likelihood that the rolling element bearing is suffering from a defect associated with the failure mode. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A computer readable medium embodying a computer program, the computer program comprising:
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computer readable program code for decomposing an input signal to produce a frequency-domain signal, the input signal comprising information associated with at least one of;
a rolling element bearing and a piece of equipment containing the rolling element bearing;computer readable program code for determining multiple families of frequencies corresponding to multiple failure modes of the rolling element bearing; computer readable program code for generating multiple reconstructed input signals, each reconstructed input signal generated using at least one family of frequencies and the frequency-domain signal; and computer readable program code for determining, using the reconstructed input signals, (i) an indicator identifying an overall health of the rolling element bearing and (ii) values identifying likelihoods that the rolling element bearing is suffering from defects associated with the failure modes. - View Dependent Claims (18, 19, 20)
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Specification