摘要
为了满足超声换能器快速筛选的要求,在对超声换能器参数导纳圆法测量原理进行分析的基础上,利用NI ELVIS平台搭建了一种结构简单的超声换能器参数测量系统。采用点频法实现高精度、快速的导纳测量,采用最小二乘法拟合得到导纳圆,进而完成超声换能器诸参数的计算。基于LabVIEW软件平台编写了相应的软件系统。针对40 kHz超声换能器的测试表明,所设计的超声换能器参数测量系统精度高、处理速度快,且结构简单、便于使用。
In order to meet the requirements of ultrasonic transducer rapid screening,based on the analysis of ultrasonic transducer parameter admittance circle measurement principle,a simple structure ultrasonic transducer parameter measurement system was built by NI ELVIS platform.The improved point frequency method is used to realize high-precision and fast admittance measurement.The admittance circle is obtained by least squares fitting,and the parameters of the ultrasonic transducer are calculated.The corresponding software system was written based on the LabVIEW software platform.The test of 40 kHz ultrasonic transducer shows that the ultrasonic transducer parameter measurement system designed in this paper has high precision,fast processing speed,simple structure and easy to use.
作者
王彦
赵洪亮
WANG Yan;ZHAO Hongliang(School of Electrical and Automation Engineering,Qingdao 266590,C)
出处
《应用声学》
CSCD
北大核心
2019年第1期114-119,共6页
Journal of Applied Acoustics
关键词
超声换能器参数
导纳圆
NIELVIS
点频法
最小二乘法
Ultrasonic transducer parameters
Admittance circle
NI ELVIS
Point frequency method
Least square
