摘要
面内模态压电振子是压电驱动的一个重要分支,小型的面内模态压电振子研究较少。为了拓宽面内弯曲压电振子的应用,提出了一种短筒型压电振子,可用于挠性驱动。利用ANSYS有限元软件确立了压电振子的结构尺寸、工作模态及固有频率。振子外径φ30 mm,高度12 mm,且外圈均布36个2 mm高的齿形结构,用于放大振幅。结果表明,该结构能够很好地激发出两同频正交三阶面内弯曲工作模态。实验测得振子在B03工作模态下具有同频正交性且谐振频率为27 140 Hz,与仿真结果吻合。通过实验验证了压电振子用于挠性驱动的可行性。
The in-plane mode piezoelectric vibrator is an important branch of piezoelectric actuators,and the miniature in-plane mode piezoelectric vibrator is rarely studied.In order to broaden the application of in-plane bending piezoelectric vibrator,a short-cylinder piezoelectric vibrator is proposed for flexible driving.The structure size,working mode and natural frequency of piezoelectric vibrator are determined by ANSYS.The outer diameter of vibrator is φ30 mm,the height is 12 mm,and 36 teeth structures with height of 2 mm are evenly distributed on the outer ring,which is used to amplify the amplitude.The tested results show that the bending working modes of the same frequency orthogonal third-order plane.The experimental results show that the structure can well excite the third-order in-plane bending working modes with two same frequencies orthogonal.The vibrator has the same frequency orthogonality and the resonance frequency is 27140 Hz in the working mode of B 03,which is consistent with the simulation results.The feasibility of the piezoelectric vibrator for flexible driving is verified by experiments.
作者
温智益
何勍
杨文鹏
乔冠尧
WEN Zhiyi;HE Qing;YANG Wenpeng;QIAO Guanyao(Dept.of Mechanical Engineering and Automation,Liaoning University of Technology,Jinzhou 121001,China)
出处
《压电与声光》
CAS
北大核心
2020年第1期88-92,共5页
Piezoelectrics & Acoustooptics
