Validation for the Method Measuring Lateral Stability Angle Belonging Tractors and Agricultural Machines

A. Korobko
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Abstract

The article presents the results of validation for the method of mea­suring the lateral stability in tractors, trailers and agricultural machines. The method was developed in the testing laboratory of the State Scientific Institution «Leonid Pogorely Ukrainian Research Institute for Forecasting and Testing Equipment and Technologies for Agricultural Production», Kharkov branch. The method developed for measuring the angle of lateral stability is based on measuring the mass of the machine on boards in a horizontal and inclined position. Evaluation of lateral stability is carried out through an indirect indicator — the ratio of the mass of the machine bead in a horizontal position and inclined. The application of the develo­ped method does not require determination of the coordinates of the cen­ter of mass of the machine and the use of platform stands, but provides only for measuring the mass of the machine in a horizontal position and at an angle when lifting one of the sides. A method for calculating the metrological characteristics of the proposed method is given. The error in measuring the angle of transverse stability of the proposed method consists of the error in measuring the mass of the machine and the uncertainty in measuring the angle of elevation of the machine’s edge. These values are independent and uncorrelated. The measurement error of the lateral stability angle is determined for the range of the real values masses of the machines and the angle at which they can be lifted aboard in safety conditions. As a result, validation is established. The method of measuring the lateral stability of a machine by successively weighing its sides is sui­table for use. Its following characteristics. Requirements for the accuracy of measuring instruments: the measurement error of the angle of inclination of the machine — no more than ± 0,1°; measurement error of the mass of the machine — no more than ± 4 kg. The total absolute error of the me­thod: when the mass of the machine is (2000)—(2300) kg — not more than 1,5°; with a mass (2300)—(10000) kg — 1,0°; with a mass of 10,000 kg or more — 0,5°. The range of measured values of the lateral stability angle is (25—45)°. The angle at which the machine climbs is (5—15)°. The scope of application of the method: tractors, trailers, agricultural machines. Table — 4. Figure — 4. References — 10.
拖拉机和农业机械横向稳定角测量方法的验证
本文介绍了拖拉机、挂车和农业机械横向稳定性测量方法的验证结果。该方法是在国家科学机构“列昂尼德·波戈雷利乌克兰农业生产预测和测试设备与技术研究所”哈尔科夫分所的测试实验室开发的。所开发的测量横向稳定角的方法是基于测量机器在水平和倾斜位置上的质量。横向稳定性的评估是通过一个间接指标进行的-机器头在水平位置和倾斜位置的质量之比。该方法的应用不需要确定机器的质心坐标,也不需要使用台架,而只提供了在水平位置和抬起一侧时以一定角度测量机器的质量。给出了该方法计量特性的计算方法。该方法测量横向稳定角的误差包括测量机器质量的误差和测量机器边缘仰角的不确定度。这些值是独立且不相关的。横向稳定角的测量误差是在机器的实际质量和在安全条件下可以上船的角度范围内确定的。因此,建立了验证。这种通过连续称量机器侧面来测量机器横向稳定性的方法是适合使用的。其特点如下。对测量仪器精度的要求:机器倾斜角度的测量误差——不大于±0.1°;机器质量的测量误差-不大于±4kg。该方法的总绝对误差:当机器质量为(2000)- (2300)kg时-不大于1.5°;质量(2300)- (10000)kg - 1°;质量大于等于10,000公斤- 0.5°。横向稳定角的测量值范围为(25-45)°。机器爬升的角度为(5-15)°。本方法适用范围:拖拉机、挂车、农用机械。表4。图- 4。参考文献- 10。
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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