Modifier adaptation with guaranteed feasibility in the presence of gradient uncertainty
| Autor: | Dominique Bonvin, Martand Singhal, Alejandro Marchetti, Timm Faulwasser |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Gradient uncertainty
0209 industrial biotechnology Mathematical optimization Modifier adaptation General Chemical Engineering ComputerApplications_COMPUTERSINOTHERSYSTEMS Context (language use) INGENIERÍAS Y TECNOLOGÍAS 02 engineering and technology 020901 industrial engineering & automation 020401 chemical engineering GRADIENT UNCERTAINTY Control theory Convergence (routing) 0204 chemical engineering Adaptation (computer science) Ingeniería Eléctrica Ingeniería Electrónica e Ingeniería de la Información Mathematics Ingeniería de Sistemas y Comunicaciones Finite difference Constraint satisfaction FEASIBLE OPERATION Computer Science Applications REAL-TIME OPTIMIZATION Constraint (information theory) Iterated function Real-time optimization MODIFIER ADAPTATION Feasible operation |
| Zdroj: | Computers & Chemical Engineering. 98:61-69 |
| ISSN: | 0098-1354 |
| Popis: | In the context of real-time optimization, modifier-adaptation schemes use estimates of the plant gradients to achieve plant optimality despite plant-model mismatch. Plant feasibility is guaranteed upon convergence, but not at the successive operating points computed by the algorithm prior to convergence. This paper presents a strategy for guaranteeing rigorous constraint satisfaction of all iterates in the presence of plant-model mismatch and uncertainty in the gradient estimates. The proposed strategy relies on constructing constraint upper-bounding functions that are robust to the gradient uncertainty that results when the gradients are estimated by finite differences from noisy measurements. The performance of the approach is illustrated for the optimization of a continuous stirred-tank reactor. Fil: Marchetti, Alejandro Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ecole Polytechnique Federale de Lausanne; Suiza Fil: Singhal, M.. Ecole Polytechnique Federale de Lausanne; Suiza Fil: Faulwasser, T.. Ecole Polytechnique Federale de Lausanne; Suiza Fil: Bonvin, D.. Ecole Polytechnique Federale de Lausanne; Suiza |
| Databáze: | OpenAIRE |
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