Application of a novel optimal control algorithm to a benchmark fed-batch fermentation process
Becerra, V. M. and Roberts, P.D. (1998) Application of a novel optimal control algorithm to a benchmark fed-batch fermentation process. Transactions of the Institute of Measurement and Control, 20 (1). pp. 11-18. ISSN 1477-0369
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To link to this article DOI: 10.1177/014233129802000103
A novel algorithm for solving nonlinear discrete time optimal control problems with model-reality differences is presented. The technique uses Dynamic Integrated System Optimisation and Parameter Estimation (DISOPE) which has been designed to achieve the correct optimal solution in spite of deficiencies in the mathematical model employed in the optimisation procedure. A method based on Broyden's ideas is used for approximating some derivative trajectories required. Ways for handling con straints on both manipulated and state variables are described. Further, a method for coping with batch-to- batch dynamic variations in the process, which are common in practice, is introduced. It is shown that the iterative procedure associated with the algorithm naturally suits applications to batch processes. The algorithm is success fully applied to a benchmark problem consisting of the input profile optimisation of a fed-batch fermentation process.
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