Multi-objective optimization calculations to improve the efficiency of the fleet of agricultural moving power units

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BACKGROUND: Due to the fact that the development of one objective function for separate assessment of each agricultural machine used in the fleet seems insufficient to fully assess the efficiency of agricultural moving power units (MPU) in fleet, a multi-objective formulation of the problem was applied using the previously developed MOVI 1.4 hardware and software system and the development of computer programs to carry out the optimization calculations of the efficiency of the agricultural moving power units in fleet with the example of a specific farm.

AIM: Development of software tools for carrying out multi-objective optimization calculations in order to increase the efficiency of the MPU fleet in the context of digitalization of agriculture.

METHODS: The analysis is based on the search of scientific publications, scientific papers and other sources of information on the development of research and experimental design work on the creation of intelligent transport and technical means and the improvement of methodology and software for multi-objective optimization calculations of the efficiency of the MPU fleet. Methods of scientific generalization and statistical processing of available information and analytical materials from domestic and foreign sources were also used.

RESULTS: To calculate the values of quality criteria for the MPU fleet, the Pascal-based interface subprogram for the MOVI 1.4, adequate for carrying out calculations based on mathematical models of objectives at trial points, was developed. After introducing the functional and criterion limits, the admissible set and the set of Pareto-optimal solutions were obtained, and correlation graphs between quality criteria were constructed. The scientific novelty lies in the development of computer programs for multi-objective justification of the efficiency of the MPU fleet.

CONCLUSION: The practical value lies in the fact that the developed mathematical and software tools can be successfully used for multi-objective optimization of the efficiency of the MPU fleet using the example of specific agricultural organizations, regions or the country as a whole.

About the authors

Valeria A. Zubina

Federal Scientific Agroengineering Center VIM

Email: lera_zubina@mail.ru
ORCID iD: 0000-0002-6657-1899
SPIN-code: 3410-5062

Cand. Sci. (Engineering), Senior Researcher of the Laboratory of Moving Power Units

Russian Federation, Moscow

Teymur Z. Godzhaev

Federal Scientific Agroengineering Center VIM

Author for correspondence.
Email: tgodzhaev95@yandex.ru
ORCID iD: 0000-0002-4496-0711
SPIN-code: 1892-8405

Head of the Modelling and Optimization of MPUs Sector

Russian Federation, Moscow

Ivan S. Malakhov

Federal Scientific Agroengineering Center VIM

Email: malakhovivan2008@mail.ru
ORCID iD: 0000-0001-8162-7718
SPIN-code: 7067-6972

Junior Researcher of the Modelling and Optimization of MPUs Sector

Russian Federation, Moscow

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Supplementary files

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2. Fig. 1. Formulation of the multi-objective optimization problem of the efficiency of the MPU fleet according to the chosen mathematical models.

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3. Fig. 2. The block diagram of the algorithm of multi-objective justification of the MPU fleet efficiency.

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4. Fig. 3. The part of initial table of tests.

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5. Fig. 4. The table of objectives’ values in the admissible points (vectors).

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6. Fig. 5. The table of values of the Pareto-optimal points (vectors).

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7. Fig. 6. Correlation between specific investments and overall performance of all tractors in the fleet.

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8. Fig. 7. Correlation between losses of agricultural products and overall service costs for a tractor per year.

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