| 热疗用凹球面状环形换能器的研究 |
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| 引用本文： | 钱盛友,周心一,刘习春.热疗用凹球面状环形换能器的研究[J].压电与声光,2005,27(4):379-381,403. |
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| 作者姓名： | 钱盛友 周心一 刘习春 |
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| 作者单位： | 湖南师范大学,电子信息科学系,湖南,长沙,410081 |
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| 基金项目： | 湖南省自然科学基金资助项目（02JJY2059）;湖南省教育厅资助科研项目（02C201） |
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| 摘 要： | 引入负声源，导出了凹球面状环形换能器声场的简洁表示式。通过数值计算，研究了凹球面状环形阵列的阵元几何尺寸、阵元分布和阵元数及激励信号等因素对声场特征的影响，分析了此类阵列的相控聚焦效果。
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| 关 键 词： | 热疗 聚焦超声 环形阵列 声场 |
| 文章编号： | 1004-2474（2005）04-0379-03 |
| 收稿时间： | 2003-10-28 |
| 修稿时间： | 2003-10-28 |
Study of Annular Transducer with Concave Spherical Surface for Hyperthermia |
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| QIAN Sheng-you,ZHOU Xin-yi,LIU Xi-chun.Study of Annular Transducer with Concave Spherical Surface for Hyperthermia[J].Piezoelectrics & Acoustooptics,2005,27(4):379-381,403. |
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| Authors: | QIAN Sheng-you ZHOU Xin-yi LIU Xi-chun |
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| Abstract: | A brief expression of sound field induced by an annular transducer made of concave spherical piezoelectric ceramic is derived by introducing a negative sound source. The influences of various factors such as the geometrical size of the ring, the number of rings, the distribution of array elements and the electric signal to excite the individual element on the characteristics of sound fields are studied through numerical calculations, and the focused effect of this phased array are analyzed. |
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| Keywords: | hyperthermia focused ultrasound annular arrays sound field |
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