Abstract:
Many technological systems are characterized by fuzzy initial information, necessary for the
development of their models, optimization and control of operating modes. Therefore, the purpose
of this study is to formulate decision making problems for optimizing and controlling operating
modes of such systems in a fuzzy environment and to develop methods for solving them. The
developed heuristic methods of fuzzy multi-criteria decision making are based on the modification
and combination of different principles of optimality. The proposed methods based on system models,
knowledge and experience of the decision maker allow iterative improvement and effective decision
making. On the basis of experimental–statistical methods, methods of expert evaluation, statistical
and fuzzy models of the stabilization column have been developed. The conditions for judging
the fuzzy model’s effectiveness are determined and investigated. Using the proposed heuristic
method based on the main criterion and maximin, the problem of two-criterion optimization of the
stabilization column parameters in a fuzzy environment is solved. The results obtained confirm the
advantages of the proposed method of fuzzy decision making in comparison with the results of known
methods. The developed heuristic methods differ from known ones because they allow making
adequate decisions in a fuzzy environment by maximizing the use of the collected fuzzy information.
