ADAPTIVE MODELING OF CHANGED STATES IN PREDICTIVE CONDITION MONITORING

Title:

ADAPTIVE MODELING OF CHANGED STATES IN PREDICTIVE CONDITION MONITORING

Document Type and Number:

WIPO Patent Application WO2002057856

Kind Code:

A3

Abstract:

An improved empirical model-based surveillance or control system for monitoring or controlling a process or machine (105) provides adaptation of the empirical model (117) in response to new operational states that are deemed normal or non-exceptional for the process or machine. An adaptation decision module (125) differentiates process or sensor upset requiring alerts from new operational states not yet modeled. A retraining module (128) updates the empirical model (117) to incorporate the new states, and a pruning technique optionally maintains the empirical model by removing older states in favor of the added new states recognized by the model.

Inventors:

WEGERICH STEPHAN W (US)
BELL DAVID R (US)
XU XIAO (US)

Application Number:

PCT/US2002/001267

Publication Date:

September 12, 2002

Filing Date:

January 18, 2002

Export Citation:

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Assignee:

SMARTSIGNAL CORP (US)
WEGERICH STEPHAN W (US)
BELL DAVID R (US)
XU XIAO (US)

International Classes:

G05B13/04; G05B17/02; G05B23/02; (IPC1-7): G05B13/02

Foreign References:

US6064916A	2000-05-16
US5949678A	1999-09-07
US5166873A	1992-11-24
US6049738A	2000-04-11
US5682317A	1997-10-28
US5414619A	1995-05-09
US5402333A	1995-03-28
US5088058A	1992-02-11
US4975827A	1990-12-04
US4368510A	1983-01-11
US3767900A	1973-10-23

Other References: