飞机结构强度试验中声源定位技术的研究与验证

Science Technology and Engineering(2017)

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Abstract
针对飞机结构强度试验中飞机结构损伤位置定位困难这一问题,采用基于时差(time difference of arrival,TDOA)的定位方法,比较了最小二乘法和最优化方法的定位精度;并对影响定位精度的因素进行了分析讨论.然后采用十六元八边形声阵列建立了定位系统,在试验现场对机翼盒段的敲击声进行定位.结果表明声阵列能够消除混响及低频噪声的影响,具有良好的定位精度,适用于飞机结构强度试验.
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Key words
time difference of arrival,acoustic array,least square method,optimization method,aircraft structure strength test
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