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本文讨论换能器有负载力阻抗及电端接有电阻抗,同时考虑换能器材料的机械及介电损耗时的夹心式压电换能器的共振频率及效率.给出了工程上常用的几种结构的频率计算式.所作的部分实验验证及经实际应用都表明理论计算和实验结果基本符合.
This article discusses the transducer has a load impedance and electrical impedance connected to the end, taking into account the mechanical and dielectric loss of the transducer material when the sandwich-type piezoelectric transducer resonance frequency and efficiency is given commonly used in engineering Of several kinds of structure of the frequency formula.Part of the experimental verification and practical application show that the theoretical calculation and experimental results are basically in line.