Theoretical research into the motion of combined fertilising and sowing tractor-implement unit
Laen...
Kuupäev
2017
Kättesaadav alates
Autorid
Bulgakov, V.
Adamchuk, V.
Arak, Margus
Petrychenko, I.
Olt, Jüri
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
A mathematical model has been developed representing the motion of a seed drill
combination simultaneously performing the preceding banded placement of mineral fertilisers.
Such a combined unit comprises the gang-up wheeled tractor, the fertiliser distribution module
behind the tractor attached to it with the use of a hitch and intended for the banded placement of
mineral fertilisers and the grain drill behind the fertiliser distribution module attached to it also
with the use of a hitch. For the components of this dynamic system the coordinates of their
centres, their masses as well as the external forces and the reactions of the soil surface applied to
them have been determined. In order to use the original dynamic equations in the form of the
Lagrange equations of the second kind, the generalised coordinates and kinetic energy relations
have been determined. Following the necessary transformations, a system of six differential
equations of motion has been generated, which characterises the behaviour of the combined
machine unit during its plane-parallel motion. In this system, two line coordinates and one angular
coordinate characterise the behaviour of the propulsion and power unit (wheeled tractor), while
three angular coordinates characterise the rotations of the draft gear and the centres of the
machines integrated with its use.
Kirjeldus
Article
Märksõnad
tractor, generalised force, kinetic energy, plane-parallel motion, modelling, articles