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Estimation of frequency characteristics of the Tonpilz piezoelectric transducer with a bending piezoelectric disk

机译:带有弯曲压电盘的Tonpilz压电换能器的频率特性估计

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A Tonpilz piezoelectric transducer which has a bending piezoelectric disk on the radiation surface for widening the frequency band to improve sonar detection performance in shallow water has been proposed. Variance of transmitting voltage response of this transducer depend on the phase difference between signals which applies to the ring-stack and the bending-disk piezoelectric resonators. Thus, an estimation of an optimal phase difference, which can be applied for obtaining the maximum value of transmitting voltage response, is important factor to assemble sonar array with sonar transducers. In this paper, we applied three methods to estimate transmitting voltage response at an arbitrary phase difference from a few measurements, and the estimation errors of those methods affected by internal impedances of power sources and/or noise are investigated to select the best method. The effectiveness of the best method was verified by water-pool experiments.
机译:已经提出了在辐射表面上具有弯曲压电盘以加宽频带以改善浅水中声纳检测性能的Tonpilz压电换能器。该换能器的发射电压响应的方差取决于施加到环形叠堆和弯曲盘压电谐振器的信号之间的相位差。因此,可用于获得发射电压响应最大值的最佳相位差的估计是将声纳阵列与声纳换能器组装在一起的重要因素。在本文中,我们采用了三种方法通过几次测量来估计任意相位差下的发射电压响应,并研究那些受电源内部阻抗和/或噪声影响的方法的估计误差,以选择最佳方法。最佳方法的有效性已通过水池实验验证。

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