频率偏移对超声换能器性能的影响规律  

The Influence of Frequency Deviation on the Performance of Ultrasonic Transducer

作　　者：文玉双 黎乐 赵晨溪 谭银华 胡文金 WEN Yushuang;LI Le;ZHAO Chenxi;TAN Yinhua;HU Wenjin(School of Electronic and Electrical Engineering,Chongqing University of Science and Technology,Chongqing 401331,China)

机构地区：[1]重庆科技大学电子与电气工程学院,重庆401331

出　　处：《重庆科技大学学报（自然科学版）》2024年第5期92-98,共7页Journal of Chongqing University of Science and Technology(Natural Sciences Edition)

基　　金：重庆市研究生科研创新项目“频率失配对超声波换能器的影响及应对策略研究”(CYS23746);重庆市研究生教育教学改革研究项目“控制类专业学位研究生工程实践教学内容的重构与资源建设”(YJG213132);重庆科技大学硕士研究生创新计划项目“频率失配对超声波换能器的影响及应对策略研究”(YKJCX2220403)。

摘　　要：针对超声换能器谐振频率偏移所造成的不确定性影响展开仿真实验研究。首先,建立换能器等效电路模型及其状态方程,针对单一谐振频率换能器进行仿真实验,明确频率偏移与换能器振幅的定量关系;然后,针对多谐振频率换能器进行仿真实验和数据分析,明确频率偏移、谐振频率和换能器性能三者之间的定量关系。结果表明,相同的频率偏移量对于高谐振频率换能器的工作性能影响更大。A simulation experiment is carried out to study the influence of uncertainty caused by resonant frequency deviation of ultrasonic transducer.Firstly,the equivalent circuit model of the transducer and its state equation are established,and the quantitative relationship between the frequency deviation and the amplitude of the transducer is determined by the simulation experiment of the single resonant frequency transducer.Then,simulation experiments and data analysis are carried out for the multi-resonant frequency transducer,and the quantitative relationship among frequency deviation,resonant frequency and the performance of the transducer is clarified.The results show that the same frequency deviation offset has greater influence on the performance of the high resonant frequency transducer.

关 键 词：频率偏移 超声换能器 谐振频率 等效电路 谐振振幅 

分 类 号：TB552[理学—物理]