| Estimation of Equivalent Circuit Parameters of Underwater Acoustic Piezoelectric Transducer for Matching Network Design of Sonar Transmitter |
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Jeong-Min Lee, Byung-Hwa Lee, Kwang-Ryul Baek |
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2Pusan National University |
| 소나 송신기의 정합회로 설계를 위한 수중 음향 압전 트랜스듀서의 등가회로 파라미터 추정 |
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이정민, 이병화, 백광렬 |
1국방과학연구소
2부산대학교 |
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| Abstract |
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This paper presents an estimation technique of the equivalent circuit parameters for an underwater acoustic piezoelectric transducer from the measured impedance. Estimated equivalent circuit can be used for the design of the impedance matching network of the sonar transmitter. A fitness function is proposed to minimize the error between the calculated impedance of the equivalent circuit and the measured impedance of the transducer. The equivalent circuit parameters are estimated by using the fitness function and the PSO(Particle Swarm Optimization) algorithm. The effectiveness of the proposed method is verified by the applications to a sandwich-type transducer and a dummy load. In addition, the impedance matching network is also designed by using the estimated equivalent circuit model. |
| Key Words:
Transducer, Equivalent Circuit, PSO(Particle Swarm Optimization), Fitness Function, Dummy Load, Matching Network |
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