夹心式压电换能器装配质量判别方法与实现  

Method of quality discriminance and realization on piezoelectric ultrasonic transducer assembly

作　　者：张云电[1] 付群利[1] 

机构地区：[1]杭州电子科技大学机械工程学院,浙江杭州310018

出　　处：《机电工程》2009年第1期32-34,62,共4页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(50275043);浙江省自然科学重点基金资助项目(Z105528)

摘　　要：为了保证压电换能器谐振频率的一致性以及其长期工作的稳定性,提高换能器电声转换效率,介绍了利用检测谐振频率和扭矩压力来判别夹心式压电换能器装配质量的方法。在研究了压电效应的基础上,提出了通过检测压电陶瓷受压产生电荷量的方法来精确判别其装配质量,解决了其装配质量不稳定的问题。研究结果表明,该方法提高了装配精度和一致性,使其性能稳定可靠。Aiming at pledging piezoelectric ultrasonic transducer＇s syntony frequency consistency, lasting stability, improving ultrasonic electro-acoustic conversion rate, the method of utilizing inspecting syntony frequency and torsion pressure was introduced, in order to distinguish the quanlity of piezoelectric ultrasonic transducers assembly. Based on studying the piezoelectric effect of the piezoelectric ceramic, a new way of distingushing precisely assembly quality was put forward, making use of inspecting the electric charges produced by pressing the piezoelectric ceramiced. The assembly instablc problem was solved. The experimental results show that the method improves assembly precision, and guarantees the stable and credible of transducer capability.

关 键 词：换能器 压电效应 电荷量 装配质量 

分 类 号：TB552[理学—物理]