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arXiv 2103.16935cs.SDcs.LGeess.AS
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基于卷积神经网络的任意形状近场声全息

Near field Acoustic Holography on arbitrary shapes using Convolutional Neural Network

Politecnico di Milano(米兰理工大学)

Marco Olivieri, Mirco Pezzoli, Fabio Antonacci, Augusto Sarti

摘要:

近场声全息(NAH)是一个众所周知的问题,旨在通过声学测量来估计结构的振动速度场。本文提出了一种基于卷积神经网络(CNN)的NAH技术。设计的CNN预测的振动场的任意形状的板(小提琴板)的正交各向异性材料的性能从有限数量的测量表面上。特别地,被称为超分辨率CNN(SR CNN)的架构能够以与输入压力相比更高的空间分辨率来估计振动场。压力和速度数据集已通过有限元法模拟生成。我们验证所提出的方法,通过比较合成地面实况的估计,并与一个国家的最先进的技术。此外,我们评估了设计的网络对噪声输入数据的鲁棒性。

英文摘要:

Near-field Acoustic Holography (NAH) is a well-known problem aimed at estimating the vibrational velocity field of a structure by means of acoustic measurements. In this paper, we propose a NAH technique based on Convolutional Neural Network (CNN). The devised CNN predicts the vibrational field on the surface of arbitrary shaped plates (violin plates) with orthotropic material properties from a limited number of measurements. In particular, the architecture, named Super Resolution CNN (SRCNN), is able to estimate the vibrational field with a higher spatial resolution compared to the input pressure. The pressure and velocity datasets have been generated through Finite Element Method simulations. We validate the proposed method by comparing the estimates with the synthesized ground truth and with a state-of-the-art technique. Moreover, we evaluate the robustness of the devised network against noisy input data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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