Modelling and adaptive control strategy in a lactic fermentation process

被引:28
作者
Ben Youssef, C
Guillou, V
Olmos-Dichara, A
机构
[1] Inst Politecn Nacl, Ctr Invest Computac, Unidad Profes Adolfo Lopez Mateos, Mexico City 07738, DF, Mexico
[2] CNRS, UMR 5504, Ctr Bioingn Gilbert Durand, F-31077 Toulouse 4, France
[3] INRA, Inst Natl Sci Appl, F-31077 Toulouse 4, France
[4] Univ Autonoma Metropolitana Iztapalapa, Dept Biotecnol, Mexico City 09340, DF, Mexico
关键词
process modelling; adaptive control; multivariable control; process parameter estimation; fermentation process;
D O I
10.1016/S0967-0661(00)00061-7
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
The modelling and design of an adaptive control strategy for lactic acid production in a continuous-flow two-stage reactor is reported. First, the medium enrichment effect, only recently investigated, is explicitly taken into account to derive an experimental model validated in batch cultures. Then, the control objective, which relies on a trade-off between total substrate depletion and optimal productivity, is stated according to economic imperatives of lactic acid production optimisation. A preliminary steady-state analysis allows the control objective to be formulated in terms of substrate supply regulation. Due to the practical importance of achieving applicable control, an adaptive-multivariable predictive-control law, where only the process output is needed and where the specific rate parameters are considered as time-varying, is proposed. Evaluation by simulation shows the efficiency and feasibility of such a control system. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1297 / 1307
页数:11
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