MULTICRITERIAL CHOICE OF THE OPTIMAL VARIANT OF A COMPLEX TECHNICAL SYSTEM
BASED ON THE INTERVAL ANALYSIS OF WEAKLY STRUCTURED INFORMATION 

Grishko Aleksey Konstantinovich, candidate of technical sciences, associate professor, sub-department of radio equipment design and production,  Penza State University (40 Krasnaya street, Penza, Russia), alexey-grishko@rambler.ru
Kochegarov Igor' Ivanovich, candidate of technical sciences, associate professor, sub-department of radio equipment design and production, Penza State University (40 Krasnaya street, Penza, Russia), alexey-grishko@rambler.ru
Lysenko Aleksey Vladimirovich, candidate of technical sciences, associate professor, sub-department of radio equipment design and production, Penza State University (40 Krasnaya street, Penza, Russia), lysenko_av@bk.ru

075.8: 007: 004.3: 518.81

10.21685/2307-5538-2017-3-14

Background. The object of the research is complex technical systems that are characterized by heterogeneous quality criteria and parameters set by the ranges of their changes. The subject of the study are multifunctional models for the formation and ranking of system variants. The aim of the work is to develop a methodology for selecting the preferred system variant for a set of heterogeneous quality criteria specified in interval form. Materials and methods. The proposed approach is based on the complex application of methods of interval analysis, fuzzy sets theory and decision theory. Analysis of tabular data is based on the application of the theory of matrices.
Results. A method for normalizing heterogeneous quality criteria is developed based on the construction of preferences relations of interval type. The construction of a complex vector of quality criteria allows one to obtain a methodology for multi- criteria choice of a variant of a complex radio electronic system on a set of possible alternatives.
Conclusions. Unlike well-known methods with rigid ranking, the method of constructing interval-type preferences on a set of alternative variants of systems based on vector heterogeneous quality criteria suggests using membership functions that instead of factors taking into account the importance of criteria that show the degree of proximity of the implementation of systems to the effective or Pareto-optimal variants . An example of the optimal construction of a radio electronic system is considered in the article, but the proposed method can find application not only in engineering, but also in solving other applied optimization problems in the economy or social sphere.

complex technical system, quality criteria, interval analysis, vector optimization