Abstract
Soil tillage is a very energy-intensive operation. A general expectation is to reduce energy consumption and reduce soil compaction with as few turns and interventions as possible. Thus, more and more attention is being paid to the use of active tillage machines. The aim of the present work is to test a new approach to optimize PTO-driven tilling machine operations regarding energy consumption. A real, active tillage machine, the MSS-140 type spading machine, was investigated in the Matlab® Simscape™ environment. The solid model of the spading machine was built using actual dimensions. The work done by a single spade is broken down into elementary processes. The acting forces on the implement, in each elementary process for different advancing speeds, were modelled and calculated. The model is suitable for illustrating the dynamics of loads and for calculating the mechanical work. The model was also tested in comparison with real fuel consumption. The consumed fuel quantity was measured and the energy requirement for the model calculated at three advancing speeds. A comparison between the measured and calculated energy consumption values was made: the calculated results are similar to the measured values; the mean difference is 9.91%, with a standard deviation 3.3%.
Highlights
Soil is an extremely important, renewable natural resource, a means of production, the place of production of plants, and the object of soil tillage
By applying the dynamic model, we propose in this work to calculate the energy consumption values and to compare them with the experimental results
This paper presents a model realized in the Matlab® SimscapeTM environment for the spading machine, introducing a methodology which will be used for driving torque determination
Summary
Soil is an extremely important, renewable natural resource, a means of production, the place of production of plants, and the object of soil tillage. Soil conservation is a global, multidisciplinary task in which machine-soil-plant-weather interactions play an important role. It is compromised by the use of heavy machinery, the increased number of passes, the increased tire air pressure, and the agricultural traffic performed over wet soil. Tillage tools can have a destructive effect on soil clumps, which are destroyed by deformation, fragmentation, and cutting, affecting the intensity of soil compaction [1]. Mechanization systems developed on this basis can offer perspectives for reducing soil destruction problems in crop production. The role of active tillage machines is becoming more important
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