基于压电换能器谐振网络幅频特性的频率跟踪技术  

The frequency tracking technology based on amplitude-frequency characteristics of piezoelectric transducer resonant network

作　　者：巩丽文[1] 杨军[1] 李跃杰[1] 宋学东[1] 

机构地区：[1]北京协和医学院中国医学科学院生物医学工程研究所,天津300192

出　　处：《应用声学》2011年第6期464-468,共5页Journal of Applied Acoustics

基　　金：天津市技术创新资金项目(OPZXCXSF03100)

摘　　要：本文分析了压电换能器谐振网络的幅频特性,介绍了利用该特性进行频率跟踪的实现方法,并对眼科白内障超声乳化仪中的超声手柄进行了频率跟踪实验。实验研究表明利用谐振网络的幅频特性,对超声振动系统进行频率跟踪是一种简单、有效、可行的方案。In this paper, the amplitude-frequency characteristics of piezoelectric transducer resonant network are analyzed, and implementation by use of the characteristics is described, and frequency tracking experiments for the ultrasound handle of the ophthalmic phaco-emulsifier of cataract are carried out. Experimental studies have shown that by using amplitude-frequency characteristics of the resonant network, and the frequency tracking method of ultrasonic vibration system is a simple, effective and feasible solution.

关 键 词：压电换能器 谐振网络 幅频特性 频率跟踪 

分 类 号：TB552[理学—物理]