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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.

由于新干线等双层列车截面积的增大和提速，隧道入口会产生噪声。一种是微压力波（MPW），另一种是低频噪声（LFN）。大的MPW发出“Don”的声音，就像远处大炮的砰砰声，让人恼火。LFN会震动隧道出口附近居民的门窗。使居住声环境恶化。在本研究中，开发了MPW和LFN的主动噪声控制系统。该系统可以适应各种条件，如列车的形状和速度，隧道的内部结构等。为了降低MPW或LFN的电平，在侧分支处产生一个控制波，即正压波，并叠加在通过隧道传播的压缩波或LFN的入射波前。本研究提出的正压主动噪声控制方法是一种新颖的方法，与现有方法相比，具有更高的控制稳定性和可行性。此外，这种技术减少了系统的维度以及系统的成本。到2004年，对该方法进行了数值分析，并进行了比例模型试验，结果吻合较好。在2005年，讨论了该主动控制系统在MPW中的实际应用，并将其应用于LFN的降低。为了产生控制波叠加在模型隧道的LFN上，改进了伺服阀控制软件，增加了储气罐容量。成功地产生了LFN，并证明了通过对相相反的控制波进行叠加可以从技术上减小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