基于LTspice设计及优化变幅杆  

Design and optimization of ultrasonic horns based on LTspice

作　　者：申文洁 贺西平[1] 买子桐 王玉莹 SHEN Wenjie;HE Xiping;MAI Zitong;WANG Yuying(College of Physics and Information Technology,Shaanxi Normal University,Shaanxi Key Laboratory of Ultrasonics,Xi’an 710062,Shaanxi,China)

机构地区：[1]陕西师范大学物理学与信息技术学院,陕西省超声重点实验室,陕西西安710062

出　　处：《云南大学学报(自然科学版)》2025年第2期219-223,共5页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家自然科学基金(12174241)。

摘　　要：解析或等效电路等传统设计变幅杆方法计算量大,运算繁琐.文章利用LTspice进行了变幅杆的设计和优化.以三段式复合变幅杆为例,解析法计算了其谐振频率,构建了其LTspice模型,并以放大系数最大作为优化目标,调整变幅杆的各段长度,计算了其谐振频率、放大系数和位移曲线等性能参数,与有限元仿真结果进行对比验证.结果表明,LTspice方法优化后放大系数增加了11.3%,有限元方法优化后增加了9.9%.利用LTspice方法设计变幅杆机电等效模型具体,物理意义明确,计算过程简捷.Generally,the traditional methods for designing horns,such as analytical or equivalent circuitapproaches,involve large computational load and complex calculations.LTspice is employed for the design andoptimization of horns in this paper.Taking a three-section composite horn as an example,the resonant frequency iscalculated using the analytical method.A LTspice model is then constructed,and the horn’s section lengths areadjusted to maximize the amplification factor as the optimization goal.The resonant frequency,amplificationfactor,and displacement curve are calculated as performance parameters and compared with finite elementsimulation results for verification.The results indicate that the amplification factor increased by 11.3%afteroptimization using the LTspice method,and by 9.9%using the finite element method.The LTspice methodprovides a clear,physically meaningful,and straightforward calculation process for designing the electro-mechanical equivalent model of horns.

关 键 词：LTspice 变幅杆 放大系数 优化 

分 类 号：O426.2[理学—声学]