Acoustic Beam Scanning Using Annular Transducer Array Introducing Decentering Operation(<Special Issue>Advanced Technology of Vibration and Sound)
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概要
- 論文の詳細を見る
A method for scanning a radiated acoustic beam is described, by introducing a concise decentering operation in an annular transducer array sound source. For generating a narrow acoustic beam, we have proposed the simple method of using a concentric annular array in which the width of each element is weighed by the J_0 function. Additionally, by applying a clearance that exists between each neighboring element of the array to decenter the array elements, we have shown that the direction of the radiated acoustic beam is made to be variable. Even when this decentering procedure is optimally, the shifting of the propagation path of the beam still occurs, and it is possible to scan the beam precisely. Using numerical calculations, we show the scanned aspect of the narrow beam generated by this method. The validity and applicability of this method are then examined.
- 2006-09-15
著者
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MASUYAMA Hiroyuki
Electronic Mechanical Engineering Department, Toba National College of Maritime Technology
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Masuyama Hiroyuki
Electronic Mechanical Engineering Department Toba National College Of Maritime Technology
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Mizutani Koichi
Graduate School Of Systems And Information Engineering University Of Tsukuba
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Mizutani Koichi
Graduate School Of Systems And Information Engineering Univ. Of Tsukuba
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Mizutani Koichi
Graduate School of System and Information Engineering, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
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