导波激励/接收压电换能器参数检测电路的设计与实现  

Research on Measurement Unit with Self-Check Parameters of Piezoelectric Transducer

作　　者：何存富[1] 刘晓龙[1] 胡富翔[1] 吴斌[1] 

机构地区：[1]北京工业大学机械工程与应用电子技术学院,北京100124

出　　处：《测控技术》2012年第4期17-20,23,共5页Measurement & Control Technology

基　　金：国家自然科学基金资助项目(10602004)

摘　　要：提出了一种基于π网络零相位法的测量压电换能器谐振频率、反谐振频率和静电容的新方法,并据此设计研制了试验测量装置,对压电换能器的谐振频率、反谐振频率及自由电容等参数进行测量。经过试验测试,该装置可以实现压电换能器基本参数的测量。It is natural to develop a new method to measure the resonant frequency, the anti-resonant frequency and the static capacitance. Based on the π network, a new method to do these works is brought out. And the hardware and software to measure the parameters are designed. Finally, through the measurement of the unit, the basic measure of the piezoelectric transducer can be done.

关 键 词：超声导波 压电换能器 π网络法 谐振频率 自由电容 

分 类 号：TB552[理学—物理]