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System and method for monitoring rotating and reciprocating machinery

  • US 8,958,995 B2
  • Filed: 02/21/2012
  • Issued: 02/17/2015
  • Est. Priority Date: 04/02/2009
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • an input interface configured to receive multiple input signals, each input signal associated with a respective stage of a rotating or reciprocating system;

    a processing unit configured to identify a fault in the rotating or reciprocating system using the input signals, wherein the processing unit is configured to identify the fault by;

    generating a first pressure-volume diagram associated with a first stage of the rotating or reciprocating system and a second pressure-volume diagram associated with a second stage of the rotating or reciprocating system from a fusion of the input signals; and

    comparing the first and second pressure-volume diagrams to determine whether a problem exists in at least one of the stages;

    an output interface configured to provide an indicator identifying the fault.

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