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首页> 外文会议>International Conference on OCEANS MTS/IEEE Washington >A magnetostrictive underwater transducer directly driven by Iron-Gallium alloy (Galfenol) without bias magnetic field
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A magnetostrictive underwater transducer directly driven by Iron-Gallium alloy (Galfenol) without bias magnetic field

机译：一种磁致伸缩水下换能器，由铁镓合金（加仑酚）直接驱动，没有偏置磁场

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This paper developed a Janus underwater transducer driven by slotted Galfenol rods and the transducer has no permanent magnet bias and is driven by current of half the mechanical resonant frequency. The mechanical resonant frequency of the prototype is about 4.8 kHz. The performances such as transmitting current response, sound level, the impedance and the phase between the driving voltage and the current are measured in anechoic tank. The frequency of the underwater sound is twice as that of the driving voltage or current in the frequency range around the resonant frequency. The maximum of the tested sound level is about 189dB (0dB=1??Pa/A@1m) with a driving current 7.4 Arms at the resonant frequency 4.8 kHz.
机译：本文开发了由开槽加仑酚棒驱动的Janus水下换能器，换能器没有永磁体偏置，并且通过机械谐振频率的一半的电流驱动。原型的机械谐振频率约为4.8kHz。在AseChic池中测量诸如发送电流响应，声级，阻抗和电流之间的相位的性能。水下声音的频率是谐振频率周围的频率范围内的驱动电压或电流的两倍。测试声级的最大值约为189dB（0dB = 1 ?? PA / A @ 1m），驱动电流7.4臂处于谐振频率4.8 kHz。

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