电动固定翼无人飞行器系统(UAS)的磁干扰测试方法

IF 1.3 Q3 REMOTE SENSING
L. Tuck, C. Samson, J. Laliberté, M. Wells, F. Belanger
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引用次数: 21

摘要

阻碍无人机系统(UASs)在地球物理磁测量行业中发挥更大作用的障碍之一是UAS产生的磁干扰及其对记录数据质量的影响。因此,在提出补救方案之前,需要详细描述干扰效应。本文演示了一种表征磁干扰的方法,用于专门用于磁测量的21公斤、3.7米翼展、6千瓦电动固定翼无人机。它涉及映射的空间变化总磁场强度产生的干扰源对无人机。动态测试表明,在测绘之前,电机应该被接合,飞机控制面应该被调平。实验结果表明,两个最强的磁干扰源是连接电机与电池的电缆和伺服器。结合三个因素来评估磁干扰水平——总磁强度、第四差和垂直磁梯度——一个指数叠加显示,磁传感器应位于距离翼尖或尾翼至少50厘米的地方,以确保干扰水平<2 nT,第四差<0.05 nT,梯度<10 nT/m。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Magnetic interference testing method for an electric fixed-wing unmanned aircraft system (UAS)
One of the barriers preventing unmanned aircraft systems (UASs) from having a larger presence in the geophysical magnetic surveying industry is the magnetic interference generated by the UAS and its impact on the quality of the recorded data. Detailed characterization of interference effects is therefore needed before remedial solutions can be proposed. A method for characterizing magnetic interference is demonstrated for a 21 kg, 3.7 m wingspan, 6 kW electric fixed-wing UAS purposely built for magnetic surveying. It involves mapping the spatial variations of the total magnetic intensity resulting from the interference sources on the UAS. Dynamic tests showed that the motor should be engaged and the aircraft control surfaces levelled prior to mapping. Experimental results reveal that the two strongest sources of magnetic interference are the cables connecting the motor to the batteries, and the servos. Combining three factors to assess the level of magnetic interference — the total magnetic intensity, 4th difference and vertical magnetic gradient — an index overlay shows that the magnetic sensor(s) should be located at least 50 cm away from the wingtips or tail to ensure an interference level of <2 nT, a 4th difference of <0.05 nT, and a gradient of <10 nT/m.
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来源期刊
CiteScore
5.30
自引率
0.00%
发文量
2
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