ABSTRACTS OF ARTICLES OF THE JOURNAL "INFORMATION TECHNOLOGIES".
No. 3. Vol. 26. 2020

DOI: 10.17587/it.26.131-137

V. N. Gridin¹, Scientific Director, D. Sc., Professor, e-mail: info@ditc.ras.ru, V. I. Anisimov^1,2, Chief Researcher, D. Sc., Professor, e-mail: vianisimov@inbox.ru,
¹ Design information technologie sCenter Russian Academy of Sciences, Odintsovo, Russian Federation,
²Saint-Petersburg Electrotechnical University, Saint-Petersburg, Russian Federation

Modeling Non-Linear Systems Based on Decomposition Methods

Methods of increasing the efficiency of nonlinear systems modeling on the basis of their mathematical description in the form of a block-diagonal bordered structure are considered. The method of organization of computational process based on the technology of calculation of loosely coupled circuits by parts is established. The comparative estimation of possible approaches to the organization of iterative computational processes at modelling of the big weakly connected systems on the basis of methods of decomposition is carried out. It is shown that by moving from a through iterative process to autonomous iterative processes and further refinement of communication variables, it is possible to reduce the total number of performed computational operations several times.
Keywords: decomposition, modeling, nonlinear system, bordered structure, iterative processes, through and autonomous iteration processes

P. 131–137

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