| Autor: |
Boaz, Ettedgui, Michel, Cabassud, Marie-Véronique, Le Lann, Gilbert, Casamatta, Lawrence, Ricker Neil |
| Zdroj: |
IFAC-PapersOnLine; June 1997, Vol. 30 Issue: 9 p407-412, 6p |
| Abstrakt: |
This paper presents the application of nonlinear model predictive control to the thermal control of a batch or semi-batch chemical reactor fitted with an alternative-fluid heating-cooling system (i.e. different fluids at a constant temperature can be delivered alternatively to the jacket). The strategy of the nonlinear control system is based on an open-loop constrained optimisation problem which is solved repeatedly on-line by a sequential optimisation and solution strategy on a PC for a typical temperature sampling rate. Feedback from measurements is used to reduce plant/model mismatch. Results using a rigorous simulator of a typical fed-batch chemical reaction vessel are presented. Two feedback schemes are compared (an output disturbance estimator and a deterministic parameter estimator) showing the limitation of the former and illustrating the advantages of the latter. Potential shortcomings of the proposed approach are pointed out. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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