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Iterative learning control of a crystallisation process using batch wise updated linearised models

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4 Author(s)
Jie Zhang ; Sch. of Chem. Eng. & Adv. Mater., Newcastle Univ., Newcastle upon Tyne, UK ; Nguyan, J. ; Zhihua Xiong ; Morris, J.

An iterative learning control strategy with batch wise updated linearised models identified using principal component regression (PCR) is proposed in this paper for the supersaturation control of a batch crystallization process. Taking the immediate previous batch as the reference batch, the linearised model relates the deviations in the control profiles with the deviations in the quality variable trajectories between the current and the reference batches. The linearised model is used in calculating the control policy updating for the current batch. Simulation results show that the proposed method can overcome the effect of disturbance and improve the process operation from batch to batch.

Published in:

Control and Decision Conference, 2009. CCDC '09. Chinese

Date of Conference:

17-19 June 2009

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