METHOD FOR ESTIMATING AND REDUCING UNCERTAINTIES IN PROCESS MEASUREMENTS

WIPO Patent Application WO2002035299

A3

A reference matrix contains valid measurements characterizing operation of a multivariate process (220). Modeling parameters of the reference matrix are derived (222-232). The final model parameters, balanced with respect to measuring and modeling uncertainties (234, 202), are applied to model (204) a new set of measurements (200). If the new set has no faults (206) then all modeled values and modeling uncertainties (208) can be used to control the process (218). If the new set has only one fault (210) then the modeled value and modeling uncertainty of the faulted measurement plus the measured values and measuring uncertainties of the unfaulted measurements (212) can be used to control the process (218) while repair procedures are implemented for the identified fault (216). If the new set has more than one fault (214) then the process (218) should be shut down, and repair procedures should be implemented (216) for all identified faults.

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MOTT JACK EDWARD (US)

PCT/CA2001/001507

December 27, 2002

October 25, 2001

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TRIANT TECHNOLOGIES INC (CA)
MOTT JACK EDWARD (US)

G05B17/02; (IPC1-7): G05B17/02

WO2000060423A1

2000-10-12

US5764509A	1998-06-09
US4937763A	1990-06-26
US5949678A	1999-09-07

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