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Journal Article

An Analytical Model of a Piezoelectric Unimorph Transducer with an Aluminum Cone

Authors: Sang, Jinqui; Qiu, Xiaojun

Journal of the Audio Engineering Society · Volume 55 · Issue 1/2 · pp. 55–62 · February 2007

Abstract

[Engineering Report] An analytical model for an ultrasonic piezoelectric flexural transducer is presented, which consists of a circular piezoelectric unimorph and an aluminum cone. The aluminum cone amplifies sound radiation from the mechanical vibration of the unimorph. The proposed model includes an equivalent electromechanical circuit with parameters derived through energy analysis and an acoustic analysis based on the acoustic radiation impedance transformation characteristics of the finite conical horn. A general agreement has been achieved between the simulation and the experimental results.

Details

Publication
Journal of the Audio Engineering Society
Volume
55
Issue
1/2
Pages
55–62
Publication date
February 6, 2007
Affiliation
Key Laboratory of Modern Acoustics and Institute of Acoustics, Nanjing University, China (See document for exact affiliation information.)
Type
Journal Article