Development of an Active Noise Reduction System to Improve the Residential Sound Environment around a portal of High Speed Train Tunnel

开发主动降噪系统改善高铁隧道出入口周边住宅声环境

基本信息

批准号：
16510070
负责人：
MATSUBAYASHI Katsushi
金额：
$ 1.73万
依托单位：
Tokyo National College of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2005
项目状态：
已结题

项目摘要

Because of the increase of cross-sectional area of the train like double decker Shinkansen and the speed-up of it, noises are emitted from the portals of tunnels. One is MPW (Micro-Pressure Wave) and the other is LFN (Low Frequency Noise). The big MPW has a sound of "Don" like distant thump of a cannon and annoys people. LFN vibrates windows or doors of residents around the tunnel exit. They worsen residential sound environment.In this study, active noise control system for MPW and LFN was developed. The system can adapt to the various conditions, i.e., shape and speed of the train, inner structure of the tunnel and so on. In order to reduce the level of MPW or LFN, a control wave, that is positive pressure, is generated at a side-branch and is superposed on the incident wave front of a compression wave or LFN propagating through the tunnel.The active noise control with positive pressure described in this study is novel method and has higher control stability and feasibly rating compared with existing method. In addition, this technique reduces the dimension of the system as well as the cost of it.By the year of 2004, numerical analysis of this active noise control was done and the scale model experiments were carried out and both results agreed well.In the year of 2005, the practical use of this active control system for MPW was discussed and the system was applied to the reduction of LFN. To generate a control wave to superpose on LFN in a model tunnel, the software to control servo-valve was improved and the air tank capacity was increased. The generation of LFN was succeeded and it was proved that LFN can be reduced technically by the superposition of control wave which has opposite phase.

由于火车的横截面区域的增加，例如双层甲板新干线及其加速，因此从隧道的门户中发出了噪音。一个是MPW（微压波），另一个是LFN（低频噪声）。大MPW的声音像遥远的大炮一样，烦恼人们。 LFN振动隧道出口周围的窗户或居民门。他们恶化了住宅声音环境。在这项研究中，开发了MPW和LFN的主动噪声控制系统。系统可以适应各种条件，即火车的形状和速度，隧道的内部结构等。为了降低MPW或LFN的水平，在侧分支处产生的对照波（即正压），并在压缩波或LFN通过隧道传播的入射波前面进行了超级实力。本研究中描述的正压的主动噪声控制是新颖的方法，并且与现有方法相比具有较高的控制稳定性，并且具有更高的控制稳定性。此外，这项技术降低了系统的维度以及成本。2004年，对这种主动噪声控制进行了数值分析，并进行了比例模型实验，并且两个结果都很好地达成了同意。在2005年，讨论了该系统的实际使用MPW，并将其应用于LFN的降低。为了在模型隧道中产生控制波以在LFN上超级斑点，改善了控制伺服阀的软件，并增加了空气储罐的容量。 LFN的产生得到了成功，并证明可以通过相反阶段的控制波的叠加来从技术上减少LFN。

项目成果

期刊论文数量（15）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Reduction of Micro-Pressure Wave by Active Control of Propagating Compression Wave in Tunnel

主动控制隧道内压缩波传播减少微压力波

DOI：
发表时间：
2005
期刊：
Journal of Institute of Noise Control Engineering of JAPAN 2-1
影响因子：
0
作者：
Katsushi Matsubayashi;Toshifumi Kosaka;Toshiya Kitamura;Shinji Yamada;Alan Vardy;Jim Brown
通讯作者：
Jim Brown

Reduction of Micro-Pressure Wave by Active Control of Propagating Compression Wave in Shinkansen Tunnel

新干线隧道压缩波传播主动控制减少微压力波