凹球面双发射极超声阵列悬浮能力研究  

Study on the Suspension Capacity of Concave Spherical Double Emitter Ultrasonic Array

作　　者：李新波[1] 王英伟 王宇昆 刘国君[3] 吴越[3] 石要武[1] WANG Yingwei;WANG Yukun;LIU Guojun;WU Yue;SHI Yaowu(College of Communications Engineering,Jilin University,Changchun 130022,China;Tianjin 712 Communication Broadcasting Co.Ltd.,Tianjin 301899,China;College of Mechanical Science and Engineering,Jilin University,Changchun 130022,China)

机构地区：[1]吉林大学通信工程学院,长春130022 [2]天津七一二通信广播股份有限公司,天津301899 [3]吉林大学机械科学与工程学院,长春130022

出　　处：《西安交通大学学报》2018年第11期106-111,共6页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金资助项目(51475198);中国博士后科学基金资助项目(2015M570270);吉林省自然科学基金资助项目(20170101207JC)

摘　　要：为了克服传统一维单轴声悬浮装置的悬浮能力较弱的问题,设计了凹球面双发射极超声阵列。首先,分析了驻波悬浮机理,采用COMSOL有限元分析软件对不同阵列凹球面半径进行仿真得到声压分布和最大声压值,确定出最优阵列凹球面半径值,并根据优化结果制作了凹球面双发射极超声阵列装置。然后,建立超声阵列与空气介质中声场的声固耦合模型,仿真分析激励电压区间递增的驻波声场声压分布情况。最后,搭建超声阵列驻波悬浮实验平台对仿真结果进行验证。实验结果表明:当激励电压分别为8、12、16和20V时,悬浮能力分别为27.8、36.2、48.2和65.4mg。与传统一维单轴超声驻波声悬浮装置的悬浮能力对比,在激励电压分别为12、16和20V时,悬浮能力分别增加了30.2%、73.4%和135.3%。凹球面双发射极超声阵列装置能够有效地提高驻波的悬浮能力。To improve the suspension ability of ultrasonic standing waves, a concave spherical double emitter ultrasonic array was designed. Firstly, the mechanism of ultrasonic standing wave suspension is analyzed, and the sound pressure distribution and maximum sound pressure value are obtained by using COMSOL finite element analysis, and the optimum array concave spherical radius is determined. The concave spherical double emitter ultrasonic array device was fabricated according to the optimized results. Then, the acoustic coupling model of ultrasonic array and sound field in air media is established, and the sound pressure distribution of standing wave field with increased excitation voltage is simulated and analyzed. Finally, the ultrasonic array standing wave suspension simulation experiment platform is built. The experimental results were compared with the traditional standing wave suspension ability. The experimental results showed that when the excitation voltage is 8, 12, 16, and 20 V, the suspension capacity is 27.8, 36.2,48.2, and 65.4 mg, respectively. Compared with the traditional one dimensional single axis ultrasonic standing wave suspension system, the suspension capacity is increased by at least 30.2%, 73.4%, and 135.3% at the excitation voltages of 12, 16, and 20 V, respectively. The concave spherical double emitter ultrasonic array device can effectively improve the standing wave suspension ability

关 键 词：激励电压 超声阵列 仿真 声压分布 悬浮能力 

分 类 号：TK323[动力工程及工程热物理—热能工程] TP273[自动化与计算机技术—检测技术与自动化装置]