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Mechanisms of active control of noise transmission through triple-panel system using single control force on the middle plate

机译：中间板上单控制力主动控制三板系统传播噪声的机理

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摘要

This paper presents an active triple-panel sound insulation structure with an idealized controllable point force acting on the middle plate. A novel analytical approach based on sound energy transmission rule is proposed to achieve the physical mechanism study. The transfer impedance matrix of the incident and middle plate is calculated using numerical approach. And the rule of sound energy transmission through the triple-panel structure is concluded by indirectly analyzing the radiated sound power of the three plates. Finally the physical mechanism of noise insulation is investigated from the point of view of the change in behaviors of energy transmission in controlled and uncontrolled conditions. Results obtained demonstrate that there exist four different energy transmission paths for four panel mode groups. The energy transmission is independent in each path and they are all of band-pass characteristic. The role of the middle plate and two cavities is very similar to the band-pass filter whose pass-band is different for different mode groups. The essence of active noise insulation lies in the fact that the energy transmission in each path is suppressed in its pass-band after control. This greatly improves sound insulation capability of the triple-panel structure and leads to sound propagation being blocked.
机译：本文提出了一种主动式三面板隔音结构，其中理想的可控点力作用在中间板上。为了实现物理机理的研究，提出了一种基于声能传递规律的解析方法。使用数值方法计算入射板和中间板的传输阻抗矩阵。并通过间接分析三块板的辐射声功率，得出声能通过三板结构的传递规律。最后，从受控和非受控条件下能量传输行为的变化角度研究了隔音的物理机理。获得的结果表明，对于四个面板模式组，存在四种不同的能量传输路径。能量传输在每个路径中都是独立的，并且都是带通特性。中间板和两个腔的作用与带通滤波器非常相似，后者的通带对于不同的模式组是不同的。主动噪声隔离的实质在于以下事实：控制后，每个路径中的能量传输在其通带中得到抑制。这大大提高了三面板结构的隔音能力，并导致声音传播受到阻碍。

著录项

  • 来源
    《Applied Acoustics》 |2014年第11期|111-122|共12页
  • 作者

    Xiyue Ma; Kean Chen; Shaohu Ding; Haoxin Yu; Jue Chen;

  • 作者单位

    School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, PR China;

    School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, PR China;

    School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, PR China;

    School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, PR China;

    School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Triple-panel structure; Active control; Sound energy transmission; Pass- and stop-band; Physical mechanisms;

    机译：三面板结构;主动控制;声能传输;通带和阻带;物理机制;

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