利用Agilent-VEE實現換能器阻抗量測與其等效集總電路參數萃取系統建置

Impedance Measurement for Piezoelectric Transducers and Implementation on Elements Values Extraction of Its Lump Circuit Model Using Agilent VEE

陳永欽(Yeong-Chin Chen) ； 吳孟軍(Menq-Jion Wu) ； 陳彥銘(Yung-Ming Chan) ； 邱意淳(Yi-Chun Chiu) ； 藍孝雲(Yshiau-Yun Lan) ； 洪于青(Yu-Cing Hong)

《中華民國振動與噪音工程學會論文集》 2008 (2008/05) Pp. 387-393

https://doi.org/10.30028/CSSVANNUAL.200805.0387

摘要

在所有的主動式聲納系統中，其電聲換能器的設計與發射機介面的阻抗匹配是一個重要的課題。本文提出以Agilent VEE儀控軟體撰寫之即時模擬程式，可經由測得換能器之阻抗特性參數，萃取出其換能器運作在共振頻率附近之集總電路模型參數，進而建立其等效集總電路模型，再以電路模擬方式設計其匹配變壓器。換能器之阻抗、相位實測值與規格值比對後，証實本法在換能器阻抗匹配的設計上可獲得良好的成果。

關鍵字

電聲換能器 ； 介面匹配 ； 阻抗匹配 ； 集總電路 ； 模型參數

並列摘要

Electro-acoustical transducers are the popular elements for sonar array. The issue is to design a impedance matched transducer to interface the high power electric driving system for high power transmitting capability. The PC-base impedance measurement system is developed to measure the impedance of the Electro-acoustical transducer. Then the transducer of the simplify electrical equivalent circuit is discussed, and a method for determining element values at or near resonance is described. Meanwhile a PC-base impedance measurement system is developed to estimate the elements value of transducer's lump circuit model. An example illustrates the application of the method in the design of a matching transformer for a high power acoustical transmitter.

並列關鍵字

Electro-acoustical transducer ； Impedance matching ； lump circuit model ； Elements values extraction