Indendification of Noise and Vibration Source Using Acoustic Double Holography Method

声学双全息法噪声和振动源识别

• 批准号: 07455105
• 负责人: SUZUKI Kohei
• 金额: $ 4.03万
• 依托单位: TOKYO METROPOLITAN UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07455105/
• 关键词: Noise; Vibration; Identification; Holography; Engine Noise; 音響二重ホログラフィ法; 騒音源同定

Several kinds of the sound noise source identification techniques have been so far proposed in the noise control and noise reduction technologies, in particular, in the field of transport and vehicle engineering. Among those, acoustic holography methods based on the backward propagation of sound have been investigated for getting high ad accurate resolutionability in the noise source identification. For example, the nearfield acoustic holography (NAH) method was proposed for this purpose utilizing the detection of evanescent wave components in nearfield of the source^<(1)>. However, the detection of the evanescent wave in this method requires nearfield setting of the measuring devices and also somehow complicated analytical instruments for measured data.The acoustic double holography (ADH) method proposed in this paper is a further developed and simplified approach which could vealize higher resolution of the identified noise source plane over conventional acoustic holography (AH) methods. The ADH method basically makes use of dual measuring planes and dose not require nearfield measuring devices and complex analysis such as NAH methods. This Method can be applied to the sound noise identification of various types of transport systems including engine noise detection under operating condition without specific test-treatment for the measuring devices.Thorough these works, following conclusions are obtained.(1) The acoustic double holography (ADH) method can provide higher resolutionability in the noise source identification compared with the conventional AH method.(2) The ADH measurement can be realized in far distant area from unit wave length and measuring time can be determined as same as that in the conventional method.(3) Simple instrumentation of the ADH measuring system can be given in the ADH approach.

在噪声控制和降噪技术中，特别是在交通和车辆工程领域，迄今为止已经提出了几种噪声源识别技术。其中，基于声后向传播的声全息方法在噪声源识别中具有较高的分辨能力。例如，为此目的提出了近场声全息（NAH）方法，该方法利用在源的近场中的倏逝波分量的检测^<（1）>。然而，该方法中的倏逝波检测需要近场设置测量装置和复杂的测量数据分析仪器，本文提出的声双全息（ADH）方法是一种进一步发展和简化的方法，与传统的声全息（AH）方法相比，它可以实现更高的噪声源识别分辨率。ADH方法基本上利用双测量平面，不需要近场测量设备和复杂的分析，如NAH方法。该方法可应用于各种运输系统的噪声识别，包括发动机噪声的工况检测，无需对测量设备进行特殊的试验处理。(1)声双全息（ADH）方法在噪声源识别中具有比传统AH方法更高的分辨率。(2)该方法可实现单位波长范围内的远距离ADH测量，测量时间与传统方法相同。(3)ADH测量系统的简单仪器可以在ADH方法中给出。

项目成果

K.Suzuki, M.Nagamatsu, T.Yoshimura and M.Nakao: "A Study on Subsidiary Source Image Reduction in Acoustic Double Holography Method" Transaction of JSME,Ser.C. Vol.62, No.601. 3452-3457 (1996)

K.Suzuki、M.Nagamatsu、T.Yoshimura 和 M.Nakao：“声学双全息法中辅助源图像缩减的研究”，JSME 期刊，Ser.C。

鈴木・中野・吉村・長松: "時系列音響ホログラフィ法の開発に関する研究" 日本機械学会講演論文集. 95-1. 559-563 (1995)

Suzuki，Nakano，Yoshimura，Nagamatsu：“时间序列声全息方法的发展研究”日本机械工程师学会会议记录 95-1（1995）。

中野・長松・鈴木: "音響二重ホログラフィ法によるエンジン騒音調査" 自動車技術会論文集. 27-1. 104-109 (1996)

Nakano、Nagamatsu 和 Suzuki：“使用声学双全息法进行发动机噪声研究”，日本汽车工程师学会会刊 27-1（1996 年）。

鈴木・長松・吉村・中野: "リファレンスを用いた時間領域音響ホログラフィ法の開発" 日本機械学会講演論文集. 95-8. 445-448 (1995)

Suzuki、Nagamatsu、Yoshimura、Nakano：“使用参考的时域声全息方法的开发”日本机械工程师学会会议记录 95-8 (1995)。

M.Nakano, M.Nagamatsu and K.Suzuki: "Identification of Engine Noise Source Using Acoustic Double Holography Method" Journal of Japanese Society of Automobile Engineering. Vol.27, No.1. 104-109 (1996)

M.Nakano、M.Nagamatsu 和 K.Suzuki：“利用声学双全息法识别发动机噪声源”日本汽车工程学会杂志。