夹心式复合超声换能器 sandwiched composite ultrasonic transducer
Using the theory of sandwich transducer, the author analyzed the combination coupling vibration of longitudinal vibration transducer and thin disk. The equivalent circuit diagram of this coupled transducer was drawn.
利用夹心式换能器的设计理论，将纵振换能器与薄圆盘作为整体进行分析，做出复合换能器的等效电路图，推导圆盘弯振的等效弹性常数的通式，进而得到复合换能器的共振频率方程。
参考来源 - 夹心式纵弯振动换能器特性研究及有限元仿真·2,447,543篇论文数据，部分数据来源于NoteExpress
主要工作如下：1、根据夹心式换能器的机电等效电路图，推导了换能器的整体频率方程。
The main aspects are as follows:1. Derivate the resonance frequency equation according to the electro-mechanical equivalent circuit of sandwich transducer.
通过改变夹心式换能器压电晶片的堆放位置及组数，使超声清洗换能器具有两个明显的谐振峰。
By changing the stack position and quantity of the piezoelectricity chip of piezoelectric ceramic sandwich transducer we can make the washing transducer bear two obvious resonance peaks.
利用直接数字合成器(DDS)对夹心式换能器进行扫频，测得两个不同共振频率附近的导纳圆。
The direct digital synthesizer (DDS) is used to sweep frequency for a sandwich piezoelectric transducer two admittance circles of the transducer about two different resonance frequencies is measured.
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