基于超声波运输的换能器仿真分析与实验  

Performance Simulation and Experiment Research of Transducer Based on Ultrasonic Transportation

作　　者：刘建芳[1] 江海[1] 李晓韬[1] 刘国君[1] 杨志刚[1] 焦晓阳[1] 

机构地区：[1]吉林大学机械科学与工程学院,长春130022

出　　处：《振动．测试与诊断》2013年第S2期59-63,218-219,共7页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(51075181)

摘　　要：针对非接触式超声悬浮运输装置的良好应用前景,设计了可应用于此领域的基于近场声悬浮的圆盘压电换能器。通过ANSYS对圆盘压电换能器进行模态与谐振分析,得到圆盘振子在不同半径和厚度下近声场的声压分布和最大声压值,确定最优的圆盘振子尺寸进行优化设计并加工制造出了圆盘压电换能器样机。利用激光测微仪对圆盘压电换能器样机进行悬浮能力实验,获得了相关的动态特性参数。结果表明,随着激励电压的增大,悬浮力呈现非线性增加,验证了实验结果与理论仿真结果的一致性。经优化设计的圆盘压电换能器可悬浮3kg的物体,单位面积悬浮质量可达到59.7g/cm2。Non-contact ultrasonic transportation device has a good application prospect,so a disk piezoelectric transducer was designed and used in the field based on near field acoustic levitation.The modality and resonance of the transducer was simulated in software ANSYS which obtained the distribution and maximum of acoustic pressure with different radius and thickness of disk.Then the transducer prototype was manufactured with the optimal the size of disk and optimization design.The suspension capacity of the transducer experiment was carried out and the relevant parameters of the dynamic characteristics are obtained according to laser displacement sensor.Results show that the levitation force nonlinearly increases as the excitation voltage increases and the consistency of the experiment results and the simulation results are verified.The optimized design of the transducer can be suspended the 3kg objective.The suspension weight per unit area of the transducer is 59.7g/cm2.Keywords near field acoustic levitation(NFAL),ultrasonic transportation,disk piezoelectric transducer, ANSYS simulation,disk vibrator

关 键 词：近声场悬浮 超声波运输 圆盘压电换能器 ANSYS仿真分析 圆盘振子 

分 类 号：TB552[理学—物理]