文章摘要
李道江,陈航,戚茜,姜明.基于辐射阻分析的水声换能器基阵优化设计[J].声学技术,2010,(3):349~353
基于辐射阻分析的水声换能器基阵优化设计
The optimal design of underwater transducer array based on radiation resistance analysis
投稿时间:2009-03-18  修订日期:2009-06-14
DOI:
中文关键词: 辐射阻抗  换能器阵  互辐射阻  辐射功率
英文关键词: radiation impedance  transducer array  mutual radiation resistance  radiating power
基金项目:高等学校博士学科点专项科研基金(20070699018,20096102120012)
作者单位E-mail
李道江 西北工业大学航海学院, 西安, 710072 lidaojiang@163.com 
陈航 西北工业大学航海学院, 西安, 710072  
戚茜 西北工业大学航海学院, 西安, 710072  
姜明 西北工业大学航海学院, 西安, 710072  
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中文摘要:
      针对互辐射阻对基阵的辐射功率的影响,计算了圆面活塞水声换能器及其基阵的辐射阻抗;分析了二元阵的互辐射阻特性,当阵元半径小于λ/2时,阵元间互辐射影响较强且呈现一定的规律性,当阵元半径大于λ/2时,阵元间互辐阻影响非常小,因此试图通过改善互辐射阻来提高辐射功率,阵元的半径应小于λ/2;在分析了二元阵、均匀线列阵和N×N均匀平面阵的互辐射阻特性基础上,对阵元半径小于λ/2的基阵布阵方式进行了优化设计,使其能获得较大的辐射功率。研究结果表明:阵元半径小于0.22λ时,密排方式最佳;阵元半径0.22λ<a<λ/2时,阵元间距为5λ/4布阵方式最佳。
英文摘要:
      To the effect of mutual impedance on array's radiation power,the radiation impedance of an underwater transducer array is computed;the mutual radiation resistance characteristics of two elements array is analyzed,the effect of mutual radiation is quite strong and disciplinary when element's radius is less than λ/2 but very weak when element's radius is bigger than λ/2;the mutual radiation resistance characteristics of two elements array,uniform linear array and N×N plane array are analyzed,the optimal design for higher radiation power of an array in which the element's radius is less than λ/2 is done.The result shows that: when element's radius is less than 0.22λ,the compact arrangement is the optimal one;when the radius of elements is bigger than 0.22λ,the distance of neighboring array elements should be 5λ/4.
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