功率超声换能器导纳特性检测及电端匹配研究  

A Study of On-Line Measurement of Admittance Characteristics and Electric Matching of Power Ultrasonic Transducer

作　　者：孙波[1] 季远[1] 李光军[1] 张德远[1] 

机构地区：[1]北京航空航天大学机械学院,北京100083

出　　处：《振动．测试与诊断》2002年第4期287-290,共4页Journal of Vibration,Measurement & Diagnosis

基　　金：国防预研科学基金资助项目 (编号 :J18.3.3)

摘　　要：提出了一种利用计算机检测功率超声换能器导纳特性的实验方法 ,并利用导纳圆法精确、快速地测量超声换能器的谐振点、谐振带宽及其他等效电路参数 ,在此基础上确定超声换能器的最佳工作点和电端匹配的电感值 ,使匹配后的换能器获得最大效率 ,同时输出阻抗最小。This paper presents a new method of online measurement of admittance characteristics of a power ultrasonic transducer by a computer, by which the parameters of equivalent circuits and resonance point and resonance band are measured accurately and quickly. Based on the measurement, the optimum operation frequency and the value of match inductance are figured out.

关 键 词：等效电路 导纳测量 压电超声换能器 电端匹配 

分 类 号：TB552[理学—物理] TM934.[理学—声学]