| 飞机结构强度试验中声源定位技术的研究与验证 |
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| 引用本文： | 韩 凯,孙志强,冯建民,贺 谦.飞机结构强度试验中声源定位技术的研究与验证[J].科学技术与工程,2017,17(19). |
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| 作者姓名： | 韩 凯 孙志强 冯建民 贺 谦 |
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| 作者单位： | 中国飞机强度研究所,国防科技大学机电工程与自动化学院,中国飞机强度研究所,中国飞机强度研究所 |
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| 基金项目： | 航空基金（20150981006,20140937001） |
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| 摘 要： | 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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| 关 键 词： | 时差定位方法 声阵列 最小二乘法 最优化方法 飞机结构强度试验 |
| 收稿时间： | 2016/12/28 0:00:00 |
| 修稿时间： | 2016/12/28 0:00:00 |
Research and Verification of Sound Localization Technology in Aircraft Structure Strength Test |
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| hankai,and.Research and Verification of Sound Localization Technology in Aircraft Structure Strength Test[J].Science Technology and Engineering,2017,17(19). |
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| Authors: | hankai and |
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| Institution: | Aircraft Strength Research Institute Aviation Technology,,, |
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| Abstract: | Aiming at the difficulty to obtain aircraft structural damage localization in airplane structure strength test and a location method based on time difference of arrival (TDOA) was proposed. Effects of location by Least square method and Optimization method were compared. Factors affecting the accuracy of the location were discussed, that a sixteen-element octagon array system was built for knock localization in the wing box. Practical examples showed that the acoustic array is suitable for aircraft structure strength test,which have fine localization precision in spite of influence of reverberation and noise on the precision. |
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| Keywords: | Time difference of arrival Acoustic array Least square method Optimization method Aircraft structure strength test |
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