压电换能器静态匹配电路的研究

为了研究压电换能器的工作安全性能,提高换能器的系统效率,根据压电换能器的工作原理,利用等效电路的方法,对换能器电端常见的几种静态匹配电路的阻抗、有功电阻和匹配电感进行分析与计算,即单个电感匹配、电感-电容匹配、改进的电感-电容匹配及T型匹配,得出各种匹配电路的最佳匹配条件.结果表明,改进的电感-电容匹配电路是一种较理想的匹配电路.

Study on matching circuit of ultrasonic transducers

In order to inspect the security characteristics and to increase the system efficiency of pizoelectric transducer,several familiar type inductance capacitance matching circuits of piezoelectric transducer are analyzed and calculated based on the work principle of the pizoelectric transducer and equivalent circuit method,it includes the single inductance matching circuit.The inductance capacitance matching circuit,the improved inductance capacitance matching circuit and the T-type matching circuit.The best matching conditions of matching circuit are obtained.It is shown that the improved inductance capacitance matching circuit is better than the others.