Data processing: structural design – modeling – simulation – and em – Modeling by mathematical expression
Reexamination Certificate
2008-05-13
2008-05-13
Rodriguez, Paul (Department: 2123)
Data processing: structural design, modeling, simulation, and em
Modeling by mathematical expression
Reexamination Certificate
active
09791046
ABSTRACT:
A method and apparatus for improved monitoring the operational state of instrumented systems is provided. An empirical model characterizes normal or desirable operation of the system, and real-time observations are provided to the model to generate estimates of expected sensor values. Comparison of the estimates with the real-time observations provides advanced warning of discrepancies in the operational state of the instrumented system. The invention provides for incipient failure detection, sensor failure detection and incipient process upset. An improved similarity operator provides for estimates that are not impaired by real-time observations at or beyond the limits of modeled data. The similarity operator comprises a difference function added to a constant, and the result is inverted.
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Herzog James P.
Wegerich Stephan W.
Fitch Even Tabin & Flannery
Guill Russ
Rodriguez Paul
Smartsignal Corporation
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