Multiobjective dynamic optimization of a semibatch free-radical copolymerization process with interactive cad tools

Abstract Optimal open-loop control strategies are developed for batch and semibatch free-radical copolymerization of styrene and acrylonitrile using the interactive computer-aided design (CAD) tool, CONSOLE, which was developed at the University of Maryland in 1987. CONSOLE emphasizes control engineer's intuition and man—machine interaction and includes a classification of various design specifications. Conflict resolution among the different objectives is made by scaling of specification space based on designer's knowledge of the polymerization process. A feasible direction algorithm is used to obtain optimal monomer addition and reactor temperature policies. Both the monomer addition policy and the reactor temperature program have been computed to produce a copolymer of uniform molecular weight and copolymer composition.

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