| Spherical-Cymbal换能器位移特性研究 |
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| 引用本文： | 吴石林,张玘,黄芝平,潘仲明.Spherical-Cymbal换能器位移特性研究[J].压电与声光,2010,32(1). |
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| 作者姓名： | 吴石林 张玘 黄芝平 潘仲明 |
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| 作者单位： | 国防科学技术大学,仪器科学与技术系,湖南,长沙,410073 |
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| 基金项目： | 国家"八六三"高技术基金资助项目 |
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| 摘 要： | 提出了一种新型高位移性能的球冠钹型(Spherical-Cymbal)压电复合换能器.Spherical-Cymbal换能器由厚度方向极化的压电陶瓷薄圆片夹持在两个球形金属端帽间制成,每个金属端帽内表面均有一个浅球冠形空腔,球形金属端帽起机械放大作用,它将压电陶瓷薄圆片的微小径向位移转换并放大为垂直其表面的较大的轴向位移.在变形假设条件下,建立了Spherical-Cymbal换能器的位移简化模型.数值计算结果表明,Spherical-Cymbal换能器比钹型(Cymbal)换能器具有更好的位移特性,某给定几何尺寸Spherical-Cymbal换能器的轴向位移是无端帽压电陶瓷薄圆片轴向位移的43.7倍,是相同尺寸Cymbal换能器轴向位移的1.1倍.
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| 关 键 词： | 球冠钹型(Spherical-Cymbal) 钹型(Cymbal) 换能器 位移模型 位移特性 |
Research on Displacement Performance of Spherical-Cymbal Transducers |
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| WU Shi-lin,ZHANG Qi,HUANG Zhi-ping,PAN Zhong-ming.Research on Displacement Performance of Spherical-Cymbal Transducers[J].Piezoelectrics & Acoustooptics,2010,32(1). |
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| Authors: | WU Shi-lin ZHANG Qi HUANG Zhi-ping PAN Zhong-ming |
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| Affiliation: | WU Shi-lin,ZHANG Qi,HUANG Zhi-ping,PAN Zhong-ming (Dept.of Instrument science , technology.National Univ.of Defense Technology,Changsha 410073,China) |
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| Abstract: | A new-type Spherical-Cymbal piezoelectric transducer with high displacement performance has been proposed.Spherical-Cymbal transducer consists of a piezoelectric ceramic disk(poled in the thickness direction) sandwiched between two spherical metal end-caps,each containing a shallow spherical inner cavity.The spherical end-caps serves as mechanical transformers for converting and amplifying the small radial displacement of the ceramic disk into a much larger axial displacement normal to the surface of the en... |
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| Keywords: | Spherical-Cymbal Cymbal transducer displacement model displacement performance |
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