Scale Transform Signal Processing for Optimal Ultrasonic Temperature Compensation
Scale Transform Signal Processing for Optimal Ultrasonic Temperature Compensation
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DOI：
10.1109/tuffc.2012.2448
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发表时间：
2012-10-01
影响因子：
3.6
通讯作者：
Moura, Jose M. F.
中科院分区：
文献类型：
--
作者：
Harley, Joel B.;Moura, Jose M. F.
在结构健康监测中，温度补偿是减少系统误差、避免误报的重要环节。已经开发了几种方法来实现导波系统中的温度补偿，但这些技术通常在计算速度上受到限制。在本文中，我们提出了一种新的方法，用于最佳的，基于拉伸的温度补偿，在拉伸因子和尺度变换域的信号上操作。使用这些工具，我们展示了三种算法的温度补偿，显示相对于其他最佳方法提高计算速度。我们使用实验导波数据测试这些算法的性能。
In structural health monitoring, temperature compensation is an important step to reduce systemic errors and avoid false-positive results. Several methods have been developed to accomplish temperature compensation in guided wave systems, but these techniques are often limited in computational speed. In this paper, we present a new methodology for optimal, stretch-based temperature compensation that operates on signals in the stretch factor and scale-transform domains. Using these tools, we demonstrate three algorithms for temperature compensation that show improved computational speed relative to other optimal methods. We test the performance of these algorithms using experimental guided wave data.