热量表超声换能器建模及分析(上)  

Modeling and Analysis of Ultrasonic Transducer for Heat Meter

作　　者：刘庆 母智华 柏洪 

机构地区：[1]重庆市伟岸测器制造股份有限公司,重庆401121

出　　处：《中国仪器仪表》2011年第9期70-72,共3页China Instrumentation

摘　　要：采用梅森等效电路对热量表超声换能器进行建模分析,在模型基础上用Matlab软件进行换能器瞬态仿真计算。计算波形和测量波形基本一致,表明梅森模型能够有效应用于热量表超声换能器建模分析。梅森模型属于频域模型,用傅利叶变换可得到瞬态波形。仿真结果表明应用快速傅利叶变换对热量表超声换能器瞬态分析是一种简便可行的方法,对于超声换能器设计具有实际意义。In this paper a model of ultrasonic transducer for heat meter is constructed with Mason equivalent circuit,and analyzed in detail.On the whole,results of simulation accord with the measured waves,indicating that Mason equivalent circuit is very valid for this application.Because Mason model belongs to frequency domain Fourier Transform must be applied to get transient waves.Simulation proves that using FFT to analyze ultrasonic transducer for heat meter is a reliable approach and very valuable to design of ultrasonic transducer.

关 键 词：超声换能器 梅森电路 瞬态分析 快速傅利叶变换 

分 类 号：TB552[理学—物理]