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Cascade closed-loop optimization and control of batch reactors
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DOI：10.1016/j.ces.2004.04.002.png)
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摘要
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In this paper, a cascade closed-loop optimization and control strategy for batch reactors is proposed. Based on the reduction of a physical conservation model a cascade system is developed, which can effectively combine optimization and control to achieve good on-line optimization and tracking performance under the common condition where incomplete knowledge of the reaction system exists. A two-tier estimation scheme using a nonlinear observer for heat production rate and reaction rates is also developed. In the reaction rate estimation, calorimetric information is used. The on-line closed-loop optimization strategy uses a descending horizon dynamic optimization algorithm based on nonlinear programming and an additive unknown disturbance for feedback. A simple adaptive nonlinear tracking system is designed based on the generic model control concept. The efficiency of this strategy is demonstrated through simulations on a batch reactor under various operation conditions, such as noisy measurements, varying initial states and model mismatch. (C) 2004 Published by Elsevier Ltd.
Keyword:
closed-loop dynamic optimization
adaptive nonlinear control
calorimetric state estimation
nonlinear observer
batch reactors
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IF:
4.3
论文数:
2.2W
被引数:
5.5W
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