| 摘要 |
PROBLEM TO BE SOLVED: To provide an underwater acoustic transceiver for radiating sonic waves at a low frequency with high power while improving acoustic radiation efficiency by suppressing bending deformation of an acoustic radiation plane on a front surface of a front mass in the underwater acoustic transceiver including a piezoelectric vibrator between the front mass and a rear mass. SOLUTION: A radiation plate 16 having the same area as a front mass is provided in a front portion of a front mass 13. One surface of the radiation plate 16 is used as an acoustic radiation plane and further, a plurality of piezoelectric actuators 15 are provided between the radiation plate and the front mass. An application electric field of the piezoelectric actuators 15 is controlled to make the displacement of the acoustic radiation plane uniform. Thus, since the acoustic radiation plane is vibrated in translational vibration, acoustic radiation efficiency is improved and, transmission sound pressure level can be improved. COPYRIGHT: (C)2010,JPO&INPIT |
