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Open AccessArticle

# A Mathematical Model of the Plane-Parallel Movement of an Asymmetric Machine-and-Tractor Aggregate

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Department of Mechanics, Faculty of Construction and Design, National University of Life and Environmental Sciences of Ukraine, 03041 Kyiv, Ukraine
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Department of Agricultural and Environmental Science, University of Bari Aldo Moro, 70124 Bari, Italy
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Department of Machine Use in Agriculture, Mechanical Engineering Faculty, Tavria State Agrotechnological University of Ukraine, 72310 Melitopol, Ukraine
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Faculty of Engineering, Latvia University of Agriculture, LV2130 Jelgava, Latvia
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Author to whom correspondence should be addressed.
Agriculture 2018, 8(10), 151; https://doi.org/10.3390/agriculture8100151
Received: 26 July 2018 / Revised: 12 September 2018 / Accepted: 25 September 2018 / Published: 1 October 2018
(This article belongs to the Special Issue Advances in Agriculture Mechanization)
Technological peculiarities of cultivation and harvesting of some agricultural crops make it necessary to use asymmetric machine-and-tractor aggregates. However, for the time being there is no sufficiently complete, analytical study of the steady movement of such machine-and-tractor aggregates. This necessitates the development of a theory of stable movement of the aggregates which would allow choosing their optimal kinematic and design parameters. On the basis of the results of mathematical simulation, a system of linear differential equations of the second order is obtained describing transverse displacement of the center of masses of the aggregating wheeled tractor and turning of its longitudinal axis of symmetry by some angle around the indicated center of mass, as well as the deviation angle of the rear-trailed harvester from the longitudinal axis of the tractor at any arbitrary moment of time. This system of differential equations can be applied for numerical calculations on the PC, which will make it possible to evaluate the stability of the movement of the asymmetric machine-and-tractor aggregate when it performs the technological process. View Full-Text
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Bulgakov, V.; Pascuzzi, S.; Nadykto, V.; Ivanovs, S. A Mathematical Model of the Plane-Parallel Movement of an Asymmetric Machine-and-Tractor Aggregate. Agriculture 2018, 8, 151.

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