Applied Mathematics & Information Sciences

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Method on development of mathematical models for chemical and engineering system (CES) in the conditions of deficit and illegible initial information is presented based on system approach and use of the available information sources. The method is implemented when developing models of chemical and engineering system of reforming block used for the production of high-quality gasoline. Mathematical problem definitions for control and selection of effective operating modes for chemical and engineering system are formalized and obtained on the basis of mathematical modeling. Based on principles of relative assumption and equality principles, heuristic algorithm is developed for the solution of formulated problem related to making decisions on operating modes of reactors of reforming block. Setting problems on control in the indefinite environment and heuristic algorithms for their solving are obtained by modification of various optimality principles based on theories of fuzzy sets.

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