書誌事項
- タイトル別名
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- New Displacement Measuring Method Using Variations in Sound Frequency of Air Columu in a Small Pipe. Electric Acoustic Noncontact Displacement Sensor.
- カンナイ クウキチュウ ノ オンキョウ シュウハスウ ヘンカ オ リヨウシタ
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抄録
A new displacement measuring method using variations in sound frequency and length of an air column in a closed resonant pipe has been investigated. This noncontact displacement sensor is oscillated by the feedback loop, which is composed of a speaker, microphone and phase-locked loop. The sound pressure takes the largest value at the resonant frequency. The displacement of the measuring object corresponds to the impedance of one end of the air column. Thus the displacement of the measuring object has good correspondence to the resonant frequency of the acoustic system. The original resonant point is measured by transfer function from the FFT analyzer. An electrical analogy is adopted for theoretical analysis of the acoustic system. The results of the calculation and experiments coincide significantly.
収録刊行物
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- 日本機械学会論文集C編
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日本機械学会論文集C編 58 (555), 3259-3264, 1992
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390001206294601216
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- NII論文ID
- 110002380566
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- NII書誌ID
- AN00187463
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- ISSN
- 18848354
- 03875024
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- HANDLE
- 10191/5795
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- NDL書誌ID
- 3791142
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可