非理想条件下换能器阵列指向性研究  

Study on Directivity of Transducer Array Under Non-ideal Conditions

作　　者：陈敏 朱品朝 黄平 朱雯 刘旺 曾强 CHEN Min;ZHU Pingchao;HUANG Ping;ZHU Wen;LIU Wang;ZENG Qiang(School of Aeronautics and Astronautics,University of Electronic Science and Technology of China,Chengdu 611731,China;Sichuan BMT Welding Equipment&Engineering Co.,Ltd.,Chengdu 610052,China)

机构地区：[1]电子科技大学航空航天学院,四川成都611731 [2]四川成焊宝玛焊接装备工程有限公司,四川成都610052

出　　处：《压电与声光》2020年第1期83-87,共5页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(61871093,61271286)

摘　　要：该文针对非理想条件下换能器阵列指向性设计问题,建立了理论计算模型,并对呈正态分布和泊松分布的阵元振速及相位对换能器阵列三维指向性的影响规律进行了研究,通过仿真分析发现:非理想条件下换能器阵元性能的不一致性对阵列指向性的影响主要体现在指向性角和指向性三维对称分布两个方面,频率越低,影响越大;不同分布规律的阵元振速及相位对换能器阵列指向性的影响有差异,即其离散度越大影响越显著。该文提出的这种非理想条件下换能器阵列指向性的评估与分析方法可应用于指导换能器阵列指向性设计及大批量生产时换能器阵列指向性参数控制中,兼具理论指导意义与实际工程应用价值。In order to solve the problem of the directivity design of transducer array under non-ideal conditions,the theoretical calculation model is established in this paper,and the influence of vibration velocity and phase of array elements with the Normal distribution and Poisson distribution on the three-dimensional directivity of transducer array are investigated.Through the simulation analysis,it is found that the influence of the inconsistency of the array element performance under non-ideal conditions on the directivity of transducer array is mainly reflected in the directional angle and the symmetric distribution of the three-dimensional directivity.The lower the frequency,the greater the influence is.The effects of the vibration velocity and phase of the array elements with different distribution laws on the directivity of transducer array are different,but in general,the greater the dispersion,the more significant the influence is.The method for evaluating and analyzing the directivity of the transducer array under non-ideal conditions presented in this paper can be applied to guide the directivity design of the transducer array and control the directivity parameters of the transducer array during the mass production,which has both theoretical guiding significance and practical engineering application value.

关 键 词：换能器阵列指向性 非理想条件 振速 相位 不同分布规律 

分 类 号：TN912[电子电信—通信与信息系统]