论文标题
耦合波管中多模的行进波的实验鉴定
Experimental identification of multimode traveling waves in a coupled wave-tube
论文作者
论文摘要
波导的无损测试和实验建模的重要组成部分是传播波模式的分解。波动波比是部分反射的量度，有助于从功率流的角度量化单个行进波的纯度。本文扩展了多模系统的波动比率的概念，并概述了几个能够将波浪分解为不同行进模式的方案，同时量化了它们的行进和站立比例。提出了一种在增加模型顺序和保持低不确定性之间达到最佳平衡的方法。据报道，一项对声波管进行的实验研究，该研究在评估其准确性和性能的同时利用各种方法。此处描述的结果强调了包括其他传播模式的重要性。此外，结果说明了使用递归多通道最小值平方法进行快速分解的能力，也可以作为制定控制波浪传播模式的闭环方案的基础。
An essential part of nondestructive testing and experimental modeling of waveguides is the decomposition of propagating wave patterns. The traveling wave ratio is a measure of partial reflections assisting in quantifying the pureness of a single traveling wave from a power flow perspective. This paper expands the notion of traveling wave ratio for multimode systems and outlines several schemes capable of decomposing the waves into their different traveling modes while quantifying their traveling and standing proportions individually. A method to strike an optimal balance between increasing model order and to maintain low uncertainty is proposed. An experimental study performed on an acoustic wave tube, which utilizes the various methods while assessing their accuracy and performance, is reported. The results described here emphasize the importance of including additional propagating modes. In addition, the results illustrate the capability of using the recursive multichannel least-mean-squares method for both a fast decomposition and as a basis to formulate closed-loop schemes controlling the wave's propagation patterns.
