两端辐射双频超声换能器设计方法.pdf

wR. ututu,com
第49卷第17期
机槭工程学报
Vol,49 No 17
2013年9月
JOURNAL OF MECHANICAL ENGINEERING
ep
2013
DOI:10.3901/ JMIE.2013.17.152
两端辐射双频超声換能器设计方法
毛汉颖1符家和2黄振峰2毛汉领
(1.广西工学院汽车系柳州542506
2.广西大学机械工程学院南宁53000
摘要:根据功率超声波的应用要求,提出一种两端辐射双超声换能器。为了其具体应用,通过对两端辐射双频超声换能器
振动特性分析,建立其机电等效电路图,并推导出共振率方程组。设计两款辐射块形状不同的两端辐射双频超声换能器,
根据两个设计工作频率,使用颊率方程组计算出各部分尺寸。利用 ANSYS软件对其中一款换能器模型进行模态分析和颊响
分析,验证频率方程组的准确性。研制出该款换能器样机,通过试验测量出样机的纵向共振频率。试验结果表明,换能器的
实测共振频率与设计值误差小于5%。利用本设计方法,可以设计出满足两个工作频率要求的双频换能器,且换能器的实际
工作频率与理论值更为接近,能满足实际应用要求。
关键词:双频换能器频率方程组模态分析频响分析
中图分类号:TBS52
Design Method of the Dual-end Whole Radiation Dual-frequency
Utrasonic transducer
MAO Hanying I FU Jiahe HUANG Zhenfeng MAO Hanling
(1. Autos Department, Guangxi Technology College, Liuzhou 542506
2. Mechanical Engineering School, Guangxi University, Nanning 530004)
Abstract: According to the appliation equiment for power ultrasonic, a new type of dual-end whole radiation dual-frequency
ultrasonic transducer is proposed. For its specific application, by means of the vibration characteristics analysis of the dual-end whole
radiation dual-frequency ultrasonic transducer, the electro-mechanical equivalent circuit is established and the resonance frequency
equation set of the transducer is deduced. Two kinds of dual-end whole radiation dual-frequency ultrasonic transducer are designed,
which the radiation blocks are different, and based on two design operating frequencies, the sizes of the various parts are calculated
by used the resonance frequency equation set. After using the software ANSYS to do the modal analysis and harmonic response
analysis of one of the transducers, the accuracy of the frequency equation set is checked. The model machine is manufactured, and
the longitudinal resonance frequency is measured by testing. The experimental results show that the error between the measured
resonant frequencies and the design values is less than 5% By using this design method, the dual-frequency transducer base on any
two different frequencies on request can been designed, and the operating frequencies is more closer to the theoretical values, which
can satisfy the practical application requirements
Key words: Dual-frequency ultrasonic transducer Frequency equation set Modal analysis Harmonic response analysis
对超声换能器的结构、性能等的要求越来越高。超
0前言
声清洗和超声萃取在工业中应用越来越多,目前用
于超声清洗和超声萃取上的换能器通常为普通夹心
超声换能器是超声工业中实现电能与声能转式压电陶瓷换能器。该种结构的换能器主要由前
换的一种装置,换能器的研究水平影响着整个超声盖板辐射超声波,且一般只能工作在一个频率上。
行业的发展。随着超声工业应用领域的日益扩大,在超声清洗和超声萃取中,单一频率换能器工作时
在液体中会产生驻波,造成一个加工盲区,严重影
?广西自然科学基金(桂科自09908西制造系统与先进制造技术响超声波的作用效果?。此外,由于不同频率的超
重点实验室课题(1-031-1201)资助项目。20120930收到初稿
20130618收到修改稿
声波,其适用的作用对象及作用效果是不一样的