用相位共轭法进行平板辐射声场的识别  

Identification of Plate Radiation Sound Field Using Phase Conjugation Method

作　　者：刘松[1] 黎胜[1] 赵德有[1] 

机构地区：[1]大连理工大学船舶工程学院工业装备结构分析国家重点实验室,辽宁大连116024

出　　处：《噪声与振动控制》2011年第1期21-26,共6页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(10972046)

摘　　要：基于相位共轭方法采用数值方法对平板辐射声场进行识别和重构,采用不同的阵列形式重构了平板的法向速度,辐射声功率以及声强。数值计算结果表明:在近场基于声压梯度测量使用偶极子源的平面相位共轭阵列形式对声场重构的效果最好,并能准确识别平板的法向速度,辐射声功率以及声强。相位共轭方法具有测点少,可自然使用局部重建方法,不存在解不稳定问题等优点,具有很好的应用前景。The phase conjugation method is used for identification of the plate acoustic radiation field.Adopting a different matrix type,their re-build it＇ s normal speed、radiation sound pressure and strength.Numerical results show that the best identification results can be achieved by the array made of dipole transceivers based on sound-pressure gradient measurement in the near field.The phase conjugation method for identification and localization of the radiation field has advantages of less measurement points,solution stability,and the natural use of patch method.Thus,it may become an useful tool for noise diagnosis.

关 键 词：声学 相位共轭方法 平板 辐射声场 重构 

分 类 号：TB532[理学—物理]