| 研究実績の概要 |
This study introduces a dynamic resonance frequency control method based on passive devices to address the issue of resonance frequency drift in high-power piezoelectric transducers, including: 1.Investigation of the dynamic resonance frequency control method for multimodal piezoelectric transducers under high driving voltages. 2.Static frequency matching and dynamic frequency control in multimodal piezoelectric actuators were achieved, significantly improving the actuators' long-term stability. 3.Stable dual-frequency ultrasound output was realized. The enhancement effect of dual-frequency ultrasound on near field acoustic levitation was explored and verified for the first time. Further development is expected to significantly enhance the performance of multimodal ultrasonic transducers.
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