Title:
COMPUTER METHOD AND APPARATUS FOR CONSTRAINING A NON-LINEAR APPROXIMATOR OF AN EMPIRICAL PROCESS
Document Type and Number:
WIPO Patent Application WO2002003152
Kind Code:
A3
Abstract:
A constrained non-linear approximator for empirical process control is disclosed. The approximator contains the behavior of the derivative of a subject empriical model without adversely affexting the ability of the model to represent generic non-linear relationships. There are threee stages to developing the constrained non-linear approximator. The first stage is the specification of the general shape of the gain trajectory or base non-linear function which is specified graphically, algebraically or generaiclly and is used as the basis for transfer functions used in the second stage. The second stage of the invention is the interconnection of the transfer functions to allow non-linear approxiamtion. The final stage of the invention is the constrained optimization of the model coefficients such that the general shape of the input/output mappings (and their corresponding derivatives) are conserved.
Inventors:
TURNER PAUL
GUIVER JOHN P
LINES BRIAN
TREIBER S STEVEN
GUIVER JOHN P
LINES BRIAN
TREIBER S STEVEN
Application Number:
PCT/US2001/020218
Publication Date:
July 25, 2002
Filing Date:
June 27, 2001
Export Citation:
Assignee:
ASPEN TECHNOLOGY INC (US)
International Classes:
G05B13/02; G06N3/00; G05B13/04; G05B17/02; (IPC1-7): G05B17/02
Domestic Patent References:
| WO1997012300A1 | 1997-04-03 | |||
| WO1999014642A1 | 1999-03-25 |
Foreign References:
| US5740033A | 1998-04-14 | |||
| DE19824433A1 | 1999-12-02 | |||
| US5687090A | 1997-11-11 | |||
| US6047221A | 2000-04-04 | |||
| US5675253A | 1997-10-07 |
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