CA2387929A1 - Method and apparatus for diagnosing difficult to diagnose faults in a complex system - Google Patents

Method and apparatus for diagnosing difficult to diagnose faults in a complex system Download PDF

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Publication number
CA2387929A1
CA2387929A1 CA002387929A CA2387929A CA2387929A1 CA 2387929 A1 CA2387929 A1 CA 2387929A1 CA 002387929 A CA002387929 A CA 002387929A CA 2387929 A CA2387929 A CA 2387929A CA 2387929 A1 CA2387929 A1 CA 2387929A1
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Canada
Prior art keywords
complex system
found
trouble
trouble found
diagnose faults
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
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CA002387929A
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French (fr)
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CA2387929C (en
Inventor
C. Richard Unkle
Nicholas Edward Roddy
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General Electric Co
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General Electric Company
C. Richard Unkle
Nicholas Edward Roddy
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Publication of CA2387929A1 publication Critical patent/CA2387929A1/en
Application granted granted Critical
Publication of CA2387929C publication Critical patent/CA2387929C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
    • G05B23/0227—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions
    • G05B23/0229—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions knowledge based, e.g. expert systems; genetic algorithms

Abstract

A method and apparatus for determining the root cause of no trouble found events in a machine is disclosed. The actual faults occurring during a predetermined time interval prior to the no trouble found event are analyzed and correlated with the no trouble found events in an effort to identify those actual faults that have a high correlation with each no trouble found event. If a high correlation is not found, then the no trouble found event is analyzed off-line to determine the root cause.
CA002387929A 1999-10-28 2000-10-25 Method and apparatus for diagnosing difficult to diagnose faults in a complex system Expired - Fee Related CA2387929C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US16204599P 1999-10-28 1999-10-28
US60/162,045 1999-10-28
US09/609,469 2000-07-03
US09/609,469 US6615367B1 (en) 1999-10-28 2000-07-03 Method and apparatus for diagnosing difficult to diagnose faults in a complex system
PCT/US2000/029406 WO2001031411A1 (en) 1999-10-28 2000-10-25 Method and apparatus for diagnosing difficult to diagnose faults in a complex system

Publications (2)

Publication Number Publication Date
CA2387929A1 true CA2387929A1 (en) 2001-05-03
CA2387929C CA2387929C (en) 2007-10-09

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CA002387929A Expired - Fee Related CA2387929C (en) 1999-10-28 2000-10-25 Method and apparatus for diagnosing difficult to diagnose faults in a complex system

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US (2) US6615367B1 (en)
AU (1) AU768166B2 (en)
CA (1) CA2387929C (en)
WO (1) WO2001031411A1 (en)

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AU1103401A (en) 2001-05-08
US7100084B2 (en) 2006-08-29
CA2387929C (en) 2007-10-09
AU768166B2 (en) 2003-12-04
US20040073844A1 (en) 2004-04-15
US6615367B1 (en) 2003-09-02

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