| 彭海军,王刚,徐伟勤,吴永春.非均匀钹式换能器平面阵布阵设计[J].声学技术,2015,34(1):96~101 |
| 非均匀钹式换能器平面阵布阵设计 |
| Design of nonuniform planar cymbal array |
| 投稿时间：2013-11-08 修订日期：2014-02-01 |
| DOI：10.16300/j.cnki.1000-3630.2015.01.018 |
| 中文关键词: 钹式换能器 非均匀平面阵 互阻辐射抗 密排基阵 |
| 英文关键词: cymbal array nonuniform planar array mutual radiation impedance compact arranged array |
| 基金项目:光电控制技术重点实验室和航空科学基金联合资助项目(20115185003) |
|
| 摘要点击次数: 1410 |
| 全文下载次数: 1399 |
| 中文摘要: |
| 钹式换能器尺寸小,可以大规模组阵以提高声辐射性能,但是它的工作频段低,其组阵不宜遵循传统压电阵元布阵间距的规律。为提高基阵的空间利用率而降低阵元互干扰的不利影响,提出一种非均匀平面基阵的实现方法。考虑强度非均匀因素,建立了9元基阵的阵元互辐射阻抗模型和基阵的总辐射阻抗模型,分别研究了阵元间距、工作频率和中心阵元强度对阵元互阻抗和基阵总阻抗的影响。在提高基阵总辐射效率,并保证单个阵元能有效辐射声能的原则下,给出了不同工作频率下,阵元的合适间距。为改善基阵的辐射阻抗提供了阵元间距和阵元强度两种调整办法,为研制超多阵元钹式水声设备奠定了理论基础。 |
| 英文摘要: |
| The size of cymbal is so small that it needs to be integrated into an array to enhance sound transmitting performance. But its working frequency is very low, and the spacing of elements can't obey traditional law. In order to maximize the space availability and minimize the interference between elements, a nonuniform planar cymbal array is considered. The cymbal array and its 9 elements' radiation impedance models are developed and calculated. The effects of elements' spacing, working frequency and center element's strength on mutual radiation and the impedance of the array are studied. Proper spacing at different frequencies to insure maximal radiation efficiency is calculated. This article provides two approaches to optimize the array radiation impedance: the elements' spacing and strength. Results are useful for underwater sound equipments with massive cymbal array. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
