MULTI-CRITERIA EVALUATION OF LOGGING TRACTOR TECHNOLOGICAL EQUIPMENT

Mykola Deyneka; Borys Bakay

M. А. Deyneka Ukranian National Forestry University, Lviv https://orcid.org/0009-0005-4313-0889
B. Ya. Bakay Ukranian National Forestry University, Lviv https://orcid.org/0000-0002-8707-9895

Keywords: logging tractor, technological equipment, EDAS method, neutrosophic sets, selective cuttings, energy efficiency.

Abstract

The article addresses the scientific problem of substantiating the parameters of logging tractor technological equipment for selective thinning and forest health improvement cuttings in lowland conditions. The authors implemented the EDAS (Evaluation based on Distance from Average Solution) method in an interval neutrosophic representation, which accounts for the degrees of truth, indeterminacy, and falsity of expert data. Using a rank sum method, weight coefficients were determined for 20 operational parameters, with the traction force utilization coefficient and specific energy consumption identified as priorities. A comparative analysis of four technological equipment alternatives (A1-A4) was conducted. Simulation results and sensitivity analysis (weight variation ±20%) confirmed the stability of the ranking, identifying the electro-hydraulic drive with an adaptive cable tension control system as the most effective (AS = 0.872). Implementation of the proposed methodology allows for a reduction in specific fuel consumption by 12-17% and a decrease in soil disturbance by up to 20%.

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