流体动力式次声换能器机电类比分析与试验研究

流体动力式换能器相较于其他形式的换能器在产生低频声音方面具有更大的优势,为了预测流体动力式换能器的声学性能,提出一种基于机电类比的流体动力式换能器等效电路模型。设计并搭建流体动力式换能器试验台,将机电类比模型模拟结果与空气中进行的试验结果进行了比较。结果显示,该机电类比模型在空气中1~4 Hz频率范围内的声源级预报值与实测值的误差低于10%,证明了机电类比分析模型的有效性和可靠性。

Electromechanical analogy analysis and experimental study of hydrodynamic infrasound projector

Hydrodynamic infrasound projectors have great advantage in generating low frequency acoustic waves over other acoustic transducers. An electromechanical analogy model is proposed to simulate the performance of the hydrodynamic infrasound projector. And, a test bench of the hydrodynamic infrasound projector is designed and fabricated. The simulation results of electromechanical analog model are compared with the experimental results in air. The results show that the error between the predicted and measured sound source levels of the electromechanical analogy model at 1-4 Hz is less than 10%, which proves the validity and reliability of the electromechanical analogy model.