一种强指向性基阵模型的设计及声场仿真  

Design of Array Model with Intense Directivity and Sound Field Simulation

作　　者：胡继文[1,2] 钱盛友[1] 

机构地区：[1]湖南师范大学物理与信息科学学院,长沙410081 [2]南华大学数理学院,衡阳421001

出　　处：《系统仿真学报》2009年第3期905-908,共4页Journal of System Simulation

基　　金：湖南省自然科学基金项目(02JJY2059)

摘　　要：设计了一种新的基阵模型: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。仿真结果表明,该基阵模型具有非常高的指向性和抑制旁瓣的能力。根据实际需要调节阵元组合方式和参数,可获得最佳的声压分布效果。此研究对实际应用有重要指导意义。A new kind of array model was designed： 90 small rings were distributed at five concentric circumferences of different radius, where each small ring vibrated with parabolic velocity weighting. Characteristic variation of sound field was studied with parameters of the array size, spacing and so on. The results show that this array has an extremely intensive directivity and an ability of suppressing side-slobs. A best distribution of sound field can be obtained when the array combination and parameters are adjusted according to practical situation. The study has an important instruction meaning to application.

关 键 词：强指向性 基阵 数值仿真 声压分布 

分 类 号：O422.6[理学—声学] TB532[理学—物理]