A classical quantitative (analytical and/or statistical) analysis is not appropriate for some ill-defined and/or very complex bioengineering problems. Therefore, a new form of analysis using fuzzy mathematics has been developed. The fuzzy model can utilize semiqualitative and linguistic data which are to a certain level inconsistent. Bioengineering interpretation of the basic concept of fuzzy mathematics is given together with a numerical algorithm for a fuzzy evaluation of a model. A simple fuzzy model of a fermentor is studied in detail.

Department of Chemical and Food Engineering Technical University of Brno Kravi Hora 2 602 00 Brno Czechoslovakia

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