Passive Impact Location Estimation Using Piezoelectric Sensors
Passive Impact Location Estimation Using Piezoelectric Sensors
复制标题
使用压电传感器进行被动撞击位置估计
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
L. Petit
中科院分区：
文献类型：
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作者：
D. Guyomar;M. Lallart;T. Monnier;Xingjun Wang;L. Petit
作为结构健康监测（SHM）的一部分，结构的历史已成为一个关键因素考虑。例如，在夏威夷附近发生的阿罗哈243号航班的重大事故就表明了这一点，当时一架波音737飞机的整个机身被扯掉。因此，监测影响变得特别有趣，以全面了解结构损坏的发生。典型的撞击位置估计技术使用结构的结构频率漂移。因此，这种方法需要结构的外部激励，这在大多数情况下是不现实的。此外，这些技术还需要进行大量和可能很长的计算，如遗传算法或人工神经网络，以便检索撞击位置。本文的范围是提出一个被动的影响位置估计使用压电元件的一维无限梁。所提出的技术的原理是比较每个传感器提取的振动能量。通过这种比较，对撞击位置进行了具有成本效益的估计。理论发展和实验结果表明，这种基于提取的力位置估计方法性能良好，同时非常简单。
As part of Structural Health Monitoring (SHM), the history of a structure has become a crucial element to take into account. This has been shown, for example, by the spectacular accident of the flight Aloha 243 near Hawaï, when a whole part of the fuselage of a Boeing 737 had been torn off. Thus, monitoring impacts has become particularly interesting to give a comprehensive view of the occurrence of structural damage. Typical impact location estimation techniques use structural frequency drifts of a structure. Thus, such methods need an external excitation of the structure, which is unrealistic in most of the cases. As well, huge and possibly long computations, as genetic algorithms or artificial neural networks, are required for such techniques in order to retrieve the impact location. The scope of the this article was to present a passive impact location estimation using piezoelectric elements for a 1D infinite beam. The principles of the proposed technique was the comparison of the vibrational energy extracted by each sensor. From this comparison, the impact location was cost-efficiently estimated. Theoretical development and experimental results showed that this extraction-based force location estimation method performed well, while being very simple.