CA2234452A1 - An expert system for testing industrial processes and determining sensor status - Google Patents

An expert system for testing industrial processes and determining sensor status

Info

Publication number
CA2234452A1
CA2234452A1 CA002234452A CA2234452A CA2234452A1 CA 2234452 A1 CA2234452 A1 CA 2234452A1 CA 002234452 A CA002234452 A CA 002234452A CA 2234452 A CA2234452 A CA 2234452A CA 2234452 A1 CA2234452 A1 CA 2234452A1
Authority
CA
Canada
Prior art keywords
function
difference
sensor
expert system
industrial processes
Prior art date
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
Application number
CA002234452A
Other languages
French (fr)
Other versions
CA2234452C (en
Inventor
Kenneth C. Gross
Ralph M. Singer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arch Development Corp
Original Assignee
Arch Development Corporation
Kenneth C. Gross
Ralph M. Singer
University Of Chicago
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Arch Development Corporation, Kenneth C. Gross, Ralph M. Singer, University Of Chicago filed Critical Arch Development Corporation
Publication of CA2234452A1 publication Critical patent/CA2234452A1/en
Application granted granted Critical
Publication of CA2234452C publication Critical patent/CA2234452C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/418Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
    • G05B19/4184Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by fault tolerance, reliability of production system
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/30Nc systems
    • G05B2219/34Director, elements to supervisory
    • G05B2219/34048Fourier transformation, analysis, fft
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/30Nc systems
    • G05B2219/37Measurements
    • G05B2219/37325Multisensor integration, fusion, redundant
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/30Nc systems
    • G05B2219/37Measurements
    • G05B2219/37326Automatic configuration of multisensor, adaptive, active sensing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S706/00Data processing: artificial intelligence
    • Y10S706/902Application using ai with detail of the ai system
    • Y10S706/903Control
    • Y10S706/906Process plant

Abstract

A method and system (110) for monitoring both an industrial process and a sensor (104). The method and system include determining a minimum number of sensor pairs needed to test the industrial process as well as the sensor (104) for evaluating the state of operation of both. After obtaining two signals associated with one physical variable, a difference function is obtained by determining the arithmetic difference between the pair of signals over time. A frequency domain transformation is made of the difference function to obtain Fourier modes describing a composite function. A residual function is obtained by subtracting the composite function from the difference function and the residual function (free of nonwhite noise) is analyzed by a statistical probability ratio test.
CA002234452A 1995-10-10 1996-10-08 An expert system for testing industrial processes and determining sensor status Expired - Fee Related CA2234452C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/541,602 1995-10-10
US08/541,602 US5761090A (en) 1995-10-10 1995-10-10 Expert system for testing industrial processes and determining sensor status
PCT/US1996/016092 WO1997014105A1 (en) 1995-10-10 1996-10-08 An expert system for testing industrial processes and determining sensor status

Publications (2)

Publication Number Publication Date
CA2234452A1 true CA2234452A1 (en) 1997-04-17
CA2234452C CA2234452C (en) 2004-02-24

Family

ID=24160272

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002234452A Expired - Fee Related CA2234452C (en) 1995-10-10 1996-10-08 An expert system for testing industrial processes and determining sensor status

Country Status (6)

Country Link
US (1) US5761090A (en)
EP (1) EP0855061B1 (en)
AU (1) AU707304B2 (en)
CA (1) CA2234452C (en)
DE (1) DE69631594D1 (en)
WO (1) WO1997014105A1 (en)

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Also Published As

Publication number Publication date
EP0855061A1 (en) 1998-07-29
AU707304B2 (en) 1999-07-08
DE69631594D1 (en) 2004-03-25
US5761090A (en) 1998-06-02
AU7395596A (en) 1997-04-30
EP0855061B1 (en) 2004-02-18
CA2234452C (en) 2004-02-24
WO1997014105A1 (en) 1997-04-17
EP0855061A4 (en) 1999-01-13

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