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Indexed by:期刊论文

Date of Publication:2008-02-01

Journal:CHINESE JOURNAL OF CHEMICAL ENGINEERING

Included Journals:SCIE、ISTIC

Volume:16

Issue:1

Page Number:128-134

ISSN No.:1004-9541

Key Words:steady state optimizing control; iterative optimization; bio-dissimilation process; 1,3-propanediol; penalty coefficient; model mismatch

Abstract:An iterative optimization strategy is proposed and applied to the steady state optimizing control of the bio-dissimilation process of glycerol to 1,3-propanediol in the presence of model-plant mismatch and input constraints. The scheme is based on the Augmented Integrated System Optimization and Parameter Estimation (AISOPE) technique, but a linearization of some performance function in the modified model-based optimization problem of AISOPE is introduced to overcome the difficulty of determining an appropriate penalty parameter. When carrying out the iterative optimization, the penalty coefficient is set to a larger value at the current iteration than at the previous iteration, which can promote the evolution rate of the iterative optimization. Simulation studies illustrate the potential of the approach presented for the optimizing control of the bio-dissimilation process of glycerol to 1,3-propanediol. The effects of measurement noise, measured and unmeasured disturbances on the proposed algorithm are also investigated.