| 胡继文,钱盛友.一种强指向性基阵的设计及声场计算[J].,2009,28(1):47-52 |
| 一种强指向性基阵的设计及声场计算 |
| Design and sound field computation of an array with intense directivity |
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| 中文摘要: |
| 提出了一种新的基阵:将90个小圆环分布于半径不同的5个同心圆周上,对每个小圆环采用了抛物型的振速加权。通过改变阵元尺寸、间距等参数研究了声场特征的变化。计算结果表明,该基阵模型具有非常高的指向性和抑制旁瓣的能力。通过优化阵元组合方式和参数,可获得最佳的声压分布效果。 |
| 英文摘要: |
| A new kind of array is proposed:90 small rings are distributed at five concentric circles of different radii,where each small ring vibrates with parabolic velocity weighting. Variation of sound field is studied with parameters of the array size,spacing and others. The results show that this array has a very intensive directivity and an ability of suppressing side-slobs.An optimum distribution of sound field can be obtained by optimizing the array combination and parameters. |
| DOI：10.11684/j.issn.1000-310X.2009.01.008 |
| 中文关键词: 基阵 数值计算 声压分布 |
| 英文关键词: Array Numerical computation Sound pressure distribution |
| 基金项目:湖南省自然科学基金项目(02JJY2059) |
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