DEVELOPMENT OF ADVANCED METHODOLOGY OF EXPERIMENTAL RESEARCH ON OSCILLATION PROCESSES INTENSITY FOR MACHINE-TRACTOR UNITS
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Published:2023-08-17
Issue:
Volume:
Page:350-358
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ISSN:2068-2239
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Container-title:INMATEH Agricultural Engineering
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language:en
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Short-container-title:INMATEH
Author:
BULGAKOV Volodymyr1, IVANOVS Semjons2, KUVACHОV Volodymyr3, POPA Lucretia4, SIVAK Igor1, TROKHANIAK Oleksandra1, IHNATIEV Yevhen3
Affiliation:
1. Department of Mechanics, Faculty of Construction and Design, National University of Life and Environmental Sciences of Ukraine 2. Faculty of Engineering, Latvia University of Life Sciences and Technologies, Jelgava / Latvia 3. Department of Machine Operation and Technical Service, Dmytro Motornyi Tavria State Agrotechnological University, Melitopol, Ukraine 4. National Institute of Research—Development for Machines and Installations Designed for Agriculture and Food Industry—INMA, Bucharest / Romania
Abstract
An important operational indicator of agricultural machine-tractor units is the smoothness of movement, which significantly affects the traction and dynamic performance of their work, productivity, agronomic qualities of the operation, traffic safety, durability and efficiency. As a rule, it is evaluated by the influence of oscillations (translational vertical, transverse, angular longitudinal, etc.), on these indicators, as well as on the physical condition and health of operators who control these units in real production conditions. This article presents an improved method and results of experimental assessment of the smoothness of the movement of the modular agricultural unit, which moves in the footsteps of a constant technological track. Studies of the smoothness of the modular unit showed that the graphs of normalized correlation functions of vertical oscillations of the modular agricultural tool developed by us in its motion in the wake of a constant techno-logical track is characterized by a function containing along with random components harmonic, which are expressed by attenuating periodic oscillations. The range of frequencies of oscillations of the frame of the agricultural tool is concentrated in the range from 0 tо 20 s−1, which is consistent with the frequency range 0…0.3 s−1 in which the variances of oscillations of inequalities of a profile of traces of a technological track are concentrated. Studies have confirmed the effectiveness of the method of estimating the intensity of vertical oscillations of the agricultural unit measuring and recording system based on a tablet computer with Android operating system with built-in accelerometer sensors and Accelerometer Meter application. The developed technique of mathematical modelling and experimental determination of vertical oscillations of the machine-tractor unit can be used in the study of the dynamics of other agricultural machines and units.
Publisher
INMA Bucharest-Romania
Subject
Industrial and Manufacturing Engineering,Mechanical Engineering,Food Science
Reference29 articles.
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