CAJ | 학술논문

为了解决大功率超声应用的换能器电端匹配问题，分析了超声波换能器在谐振频率三次谐波下的阻抗特性，给出了超声换能器三次谐波下的阻抗电路模型.并根据阻抗电路模型建立了对超声换能器的夹持电容实现在线检测简单、可靠性高的方法，实验证明该方法有效的.该方法可以在换能器工作过程中随时检测夹持电容的变化，根据检测结果对匹配电感进行动态调整，实现真正意义上的换能器电端的动态匹配，从而大大改善匹配质量，提高系统的工作性能.
위료해결대공솔초성응용적환능기전단필배문제，분석료초성파환능기재해진빈솔삼차해파하적조항특성，급출료초성환능기삼차해파하적조항전로모형.병근거조항전로모형건립료대초성환능기적협지전용실현재선검측간단、가고성고적방법，실험증명해방법유효적.해방법가이재환능기공작과정중수시검측협지전용적변화，근거검측결과대필배전감진행동태조정，실현진정의의상적환능기전단적동태필배，종이대대개선필배질량，제고계통적공작성능.
Presents the simple but highly reliable on-line detection of ultrasonic transducer clamping capacitance based on the impedance circuit model constructed through the impedance characteristics of the ultrasonic transducer under triple harmonics, and concludes from experimental results that this method can be used to effectively detect the variation of clamping capacitance while the transducer is operating, and the matching inductance can be dynamically regulated according to the results of detection, and dynamic matching can therefore be achieved in the real sense at the end of the transducer to improve the overall performance of the whole system.