Design of the Sonar Transducer for Underwater Remotely Operated Vehicles

• Main Authors: Lee,Ju-sung, 李如松
• Other Authors: Lin,Wu-wen
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/33903585067571244317

碩士 === 國立中山大學 === 海下技術研究所 === 86 === In this thesis, an ultrasonic sonar transducer used for a ROV (Remotely Oper ated Vehicle) is developed in IUT (Institute of Undersea Technology, National Sun Yat-Sen University, R.O.C.) The fundamental principles and practical guidelines for designing such a transducer are studied, and the techniques of fabrication and measurement are also investigated. Following procedures are carried out throughout the study: (1) investigation of the fundamental theories, (2) design and computation of various transducer parameters, (3) analysis and derivation of equivalent circuit, (4) fabrication and measurement of the transducer. Longitudinally polarized piezoelectric ceramic cylinders have been widely used in ultrasonic transducers. The vibration characteristicsare studied, and the resonance frequency equation is also derived. Based onelectromechanical analogy theory, equivalent circuit of the transducer is developed by using the solution of wave equation and the piezoelectric equations. The frequency responses of piezoelectric ceramic and transducer array can be obtained by simulating the equivalent circuit in PSPICE. A set of transducer array is fabricated to carry out prototype test. Preliminary experiments show good agreement with our works.-1 -aDesign of the Sonar Transducer for Underwater Remotely Operated Vehicles