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论文类型：期刊论文

发表时间：2020-06-01

发表刊物：DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES S

收录刊物：SCIE

卷号：13

期号：6,SI

页面范围：1623-1635

ISSN号：1937-1632

关键字：Nonlinear dynamic system; optimal control; feedback control; adaptive algorithm

摘要：In this paper, we consider a multistage feedback control strategy for the production of 1,3-propanediol(1,3-PD) in microbial fermentation. The feedback control strategy is widely used in industry, and to the best of our knowledge, this is the first time it is applied to 1,3-PD. The feedback control law is assumed to be linear of the concentrations of biomass and glycerol, and the coefficients in the controller are continuous. A multistage feedback control law is obtained by using the control parameterization method on the coefficient functions. Then, the optimal control problem can be transformed into an optimal parameter selection problem. The time horizon is partitioned adaptively. The corresponding gradients are derived, and finally, our numerical results indicate that the strategy is flexible and efficient.