Fluid and Acoustic Engineering Laboratory, Beihang University, Beijing 100191, China.
School of Engineering, University of Warwick, Coventry CV4 7AL, UK.
Sensors (Basel). 2019 Jan 2;19(1):137. doi: 10.3390/s19010137.
Based on traditional sandwich structure, two piezoelectric transducers were designed to meet the strict underwater application backgrounds such as high pressure, corrosion resistance, and high strength. Both transducers integrated most of previous researches while one transducer has a multilayer cavity structure which is different from the other structure and previous transducer structures. After a detailed simulation analysis of every structural parameter, key parameters were pointed out to have an obvious influence on its performance. Then, two models were constructed and compared with chosen sets of geometry parameters and manufacturing process, which can also provide a reference for low-frequency transducer design. The simulation results and experimental results of our transducers show a good consistency which indicates the cavity structure can reduce the resonance frequency.
基于传统的夹层结构，设计了两个压电换能器，以满足水下应用的严格要求，如高压、耐腐蚀和高强度。这两个换能器集成了之前的大部分研究成果，其中一个换能器具有不同于其他结构和之前换能器结构的多层腔结构。在对每个结构参数进行详细的模拟分析后，指出了关键参数对其性能有明显的影响。然后，构建了两个模型，并与选定的几何参数和制造工艺进行了比较，这也为低频换能器设计提供了参考。我们的换能器的仿真结果和实验结果具有很好的一致性，这表明腔结构可以降低共振频率。
