| Title |
Equivalent Circuit Modelling of FFR Transducer Array for Sonar System Design |
| Authors |
김인동(Kim, In-Dong) ; 최승수(Choi, Seung-Soo) ; 이학수(Lee, Haksue) ; 이승우(Lee, Seung Woo) ; 문원규(Moon, Wonkyu) |
| DOI |
https://doi.org/10.5370/KIEE.2017.66.4.629 |
| Keywords |
FFR transducer array ; Equivalent electric circuit model ; Matching circuit ; Sonar system ; System design |
| Abstract |
Free-Flooded Ring (FFR) transducer array for use in Sonar system can be driven with large amplitude in a wide frequency band due to its structural characteristics, in which two resonances of a ring mode (1st radial mode) and an inner cavity vibration mode occur in a low frequency band. Since its sound wave generation characteristics are not influenced by the water pressure, the FFR transducer array is widely used in the deep sea. So FFR has been recognized as a low-frequency active sound source and has received much attention ever since. In order to utilize the FFR transducer array for SONAR systems in military and industrial applications, its equivalent electric circuit model is necessary especially to design the matching circuit between the driving power amplifier and the FFR transducer array. Thus this paper proposes the equivalent electric circuit model of FFR transducer array by using measured values of parameter, and suggest the improved method of parameter identification. Finally it verifies the effectiveness of the proposed circuit model of FFR transducer array by experimental measurements. |