DEVELOPMENT OF ADVANCED METHODOLOGY OF EXPERIMENTAL RESEARCH ON OSCILLATION PROCESSES INTENSITY FOR MACHINE-TRACTOR UNITS

IF 0.6 Q4 AGRICULTURAL ENGINEERING

INMATEH-Agricultural Engineering Pub Date : 2023-08-17 DOI:10.35633/inmateh-70-34

V. Bulgakov, S. Ivanovs, Volodymyr Kuvachоv, Lucretia Popa, Igor Sivak, O. Trokhaniak, Y. Ihnatiev

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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.

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机耕机组振动过程强度实验研究先进方法的发展

农机拖拉机机组的一项重要运行指标是运行平稳性，它对农机拖拉机的牵引力和动力性能、生产效率、作业农艺质量、行车安全、耐久性和效率有重要影响。通常，通过振荡(平移垂直、横向、角纵向等)对这些指标的影响以及在实际生产条件下控制这些装置的操作人员的身体状况和健康状况来评估。本文提出了一种改进的模块化农业单元运动平稳性的实验评价方法和结果。对模块化单元平滑性的研究表明，我们所开发的模块化农具在固定技术轨迹运动过程中的垂直振荡归一化相关函数图，其特征是一个包含随随机分量谐波的函数，该函数用衰减周期振荡表示。农具框架的振荡频率范围集中在0 ~ 20 s−1，这与技术轨迹轮廓不等式振荡方差集中在0 ~ 0.3 s−1的频率范围一致。研究证实了基于Android操作系统、内置加速度计传感器和accelerometer Meter应用的平板电脑农业单元测量记录系统垂直振荡强度估算方法的有效性。发展起来的机械-拖拉机装置垂直振动的数学建模和实验测定技术，可用于其他农业机械和装置的动力学研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

INMATEH-Agricultural Engineering AGRICULTURAL ENGINEERING-

CiteScore

1.30

自引率

57.10%

发文量