Development of New Measuring Method of Accurate Displacement and Surface Roughness by using Sound Signal

利用声音信号精确测量位移和表面粗糙度的新方法的开发

• 批准号: 01550089
• 负责人: ICHIMIYA Ryoichi
• 金额: $ 1.41万
• 依托单位: Niigata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01550089/
• 关键词: Sound frequency; Displacement; Resonance; Surface roughness; Accurate measurement; 精度測定

Sound generates when compressed air is blown onto an open-ended face of a small pipe whose one end is closed. The sound frequency generated in the pipe alter when the length of the air column of the pipe is changed. This phenomenon is applied in this research work as the displacement of the substance corresponds to the sound frequency generated in the pipe. The purpose of this research work is to develop and put to practical use a new method which is used to measure the displacement precisely.Theoretical analyses of the sound generation by suing compressed air were introduced and the sounding frequency was calculated from the theoretical equation.Experiments of the measuring displacement by using compressed air and a speaker were conducted under several sounding conditions. Experimental data were obtained to make practice of this method of the displacement.A new method described in this paper combines the features of high accuracy, low cost,simple directions ,etc. This method makes it possible to measure the displacement with a unit length under lmum.By using aboved mentioned principle, the surface roughness was measured by means of the sound frequency, however more research works are required to make practice of this method on the measuring roughness.

当压缩空气吹到一端封闭的小管的开口面上时，就会产生声音。当管道气柱长度改变时，管道内产生的声波频率也随之改变。这种现象被应用在这项研究工作中，因为物质的位移对应于管道中产生的声音频率。为了开发和应用一种新的精密位移测量方法，对压缩空气发声进行了理论分析，并根据理论公式计算了发声频率，在几种发声条件下进行了压缩空气和扬声器测量位移的实验。本文提出的新方法具有精度高、成本低、方向简单等特点，使测量单位长度位移量的精度达到1 μ m以下。利用该原理，利用声频法测量了表面粗糙度，但将该方法应用于粗糙度的测量，还需要进一步的研究。

项目成果

一宮 亮一: "音響信号を利用した体積測定の研究" 日本機械学会論文集. 57. 332-337 (1991)

Ryoichi Ichinomiya：“使用声学信号进行体积测量的研究”，日本机械工程师学会汇刊 57. 332-337 (1991)。

S. Sakamoto: "A New Measuring Method of Displacement by Means of Variations of Sound Frequency and the Length of Air Column in a Small Pipe (Theoretical Analysis by Means of Electrical Analogous Circuit and Velocity Distribution)" Transaction of JSME. vol

S. Sakamoto：“一种利用声频变化和小管内空气柱长度测量位移的新方法（通过模拟电路和速度分布进行理论分析）”JSME 交易。

坂本 秀一: "管内空気柱の音響周波数変化を利用した変位の精密測定(等価回路と流速分布による理論解析)" 日本機械学会論文集. 56. 435-441 (1990)

Shuichi Sakamoto：“利用管内空气柱的声频变化精确测量位移（使用等效电路和流速分布的理论分析）”日本机械工程师学会会刊 56. 435-441 (1990)。

S. Sakamoto: "A New Measuring Method of Displacement by Means of Variations of Sound Frequency and the Length of Air Volume in a Small Pipe (A Resonant Method by Using Speaker and Electric Feedback Loop)" Transaction of JSME. Vol. 56. 2562-2566 (1990)

S. Sakamoto：“一种通过改变声频和小管内空气体积长度来测量位移的新方法（使用扬声器和电反馈环路的谐振方法）”JSME 交易。

坂本 秀一: "管内空気柱の音響周波数変化を利用した変位の精密測定(スピ-カと電気的フィ-ドバックル-プによる共鳴法)" 日本機械学会論文集. 56. 2562-2566 (1990)

Shuichi Sakamoto：“利用管内空气柱的声频变化精确测量位移（使用扬声器和电反馈回路的共振方法）”日本机械工程师学会汇刊 56. 2562-2566 (1990)。