WO1995018420A3 - Method for monitoring multivariate processes - Google Patents

Method for monitoring multivariate processes Download PDF

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Publication number
WO1995018420A3
WO1995018420A3 PCT/SE1994/001208 SE9401208W WO9518420A3 WO 1995018420 A3 WO1995018420 A3 WO 1995018420A3 SE 9401208 W SE9401208 W SE 9401208W WO 9518420 A3 WO9518420 A3 WO 9518420A3
Authority
WO
WIPO (PCT)
Prior art keywords
pct
standard deviation
residual standard
variables
sec
Prior art date
Application number
PCT/SE1994/001208
Other languages
French (fr)
Other versions
WO1995018420A2 (en
Inventor
Svante Wold
Lasse Sundin
Original Assignee
Asea Brown Boveri Ab
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 Asea Brown Boveri Ab filed Critical Asea Brown Boveri Ab
Priority to JP51766495A priority Critical patent/JP3429769B2/en
Priority to EP95904723A priority patent/EP0775335B1/en
Priority to US08/666,346 priority patent/US5949678A/en
Priority to DE69412520T priority patent/DE69412520T2/en
Publication of WO1995018420A2 publication Critical patent/WO1995018420A2/en
Publication of WO1995018420A3 publication Critical patent/WO1995018420A3/en
Priority to FI962560A priority patent/FI962560A/en
Priority to NO19962626A priority patent/NO311818B1/en

Links

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
    • G05B23/024—Quantitative history assessment, e.g. mathematical relationships between available data; Functions therefor; Principal component analysis [PCA]; Partial least square [PLS]; Statistical classifiers, e.g. Bayesian networks, linear regression or correlation analysis; Neural networks
    • 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
    • G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
    • G05B23/0286—Modifications to the monitored process, e.g. stopping operation or adapting control
    • G05B23/0289—Reconfiguration to prevent failure, e.g. usually as a reaction to incipient failure detection

Abstract

PCT No. PCT/SE94/01208 Sec. 371 Date Oct. 16, 1996 Sec. 102(e) Date Oct. 16, 1996 PCT Filed Dec. 15, 1994 PCT Pub. No. WO95/18420 PCT Pub. Date Jul. 6, 1995Variables associated with a multivariate process are monitored on a periodic basis. As a result of an observation of the variables, a residual standard deviation between the monitored variable values and a predictive model can be determined. The residual standard deviation is plotted as a series of connected points. Through the use of an adaptive model, the observations of the variables, and in turn, the residual standard deviation and the predictive model are adapted to changes in the multivariate process.
PCT/SE1994/001208 1993-12-22 1994-12-15 Method for monitoring multivariate processes WO1995018420A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP51766495A JP3429769B2 (en) 1993-12-22 1994-12-15 Method for monitoring a variable number of processes
EP95904723A EP0775335B1 (en) 1993-12-22 1994-12-15 Method for monitoring multivariate processes
US08/666,346 US5949678A (en) 1993-12-22 1994-12-15 Method for monitoring multivariate processes
DE69412520T DE69412520T2 (en) 1993-12-22 1994-12-15 METHOD FOR DISPLAYING MULTI-DIMENSIONAL PROCESSES
FI962560A FI962560A (en) 1993-12-22 1996-06-19 Method for monitoring multivariate processes
NO19962626A NO311818B1 (en) 1993-12-22 1996-06-20 Procedure for monitoring multivariate processes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9304246-3 1993-12-22
SE9304246A SE9304246L (en) 1993-12-22 1993-12-22 Procedure for monitoring multivariate processes

Publications (2)

Publication Number Publication Date
WO1995018420A2 WO1995018420A2 (en) 1995-07-06
WO1995018420A3 true WO1995018420A3 (en) 1995-07-27

Family

ID=20392178

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1994/001208 WO1995018420A2 (en) 1993-12-22 1994-12-15 Method for monitoring multivariate processes

Country Status (10)

Country Link
US (1) US5949678A (en)
EP (1) EP0775335B1 (en)
JP (1) JP3429769B2 (en)
AT (1) ATE169746T1 (en)
CA (1) CA2179719A1 (en)
DE (1) DE69412520T2 (en)
FI (1) FI962560A (en)
NO (1) NO311818B1 (en)
SE (1) SE9304246L (en)
WO (1) WO1995018420A2 (en)

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Also Published As

Publication number Publication date
ATE169746T1 (en) 1998-08-15
US5949678A (en) 1999-09-07
NO311818B1 (en) 2002-01-28
EP0775335B1 (en) 1998-08-12
WO1995018420A2 (en) 1995-07-06
JPH11502609A (en) 1999-03-02
FI962560A (en) 1996-08-21
SE9304246L (en) 1995-06-23
NO962626D0 (en) 1996-06-20
EP0775335A2 (en) 1997-05-28
SE9304246D0 (en) 1993-12-22
JP3429769B2 (en) 2003-07-22
CA2179719A1 (en) 1995-07-06
NO962626L (en) 1996-07-25
DE69412520T2 (en) 1999-02-04
DE69412520D1 (en) 1998-09-17
FI962560A0 (en) 1996-06-19

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