新型旋转抛物面换能器阵列的设计  

Design of novel rotary paraboloid transducer array

作　　者：谭笑枫 李夕海 曾小牛 康志谦 李广帅 TAN Xiaofeng;LI Xihai;ZENG Xiaoniu;KANG Zhiqian;LI Guangshuai(School of Nuclear Engineering, Rocket Force University of Engineering, Xi’an 710025, China;Rocket Force Sergeant School, Qingzhou 262500, China)

机构地区：[1]火箭军工程大学核工程学院,陕西西安710025 [2]火箭军士官学校,山东青州262500

出　　处：《系统工程与电子技术》2021年第3期631-636,共6页Systems Engineering and Electronics

基　　金：国家自然科学基金(41774156,41374154)资助课题。

摘　　要：针对常见的一维线阵列和二维平面阵存在能量转化率低、成本高和加工精度要求高等问题,在构建任意三维阵列的指向性函数的基础上,设计了一种旋转抛物面型换能器阵列。将平面型换能器阵列旋转成抛物面型,利用指向性函数确定旋转抛物面型换能器阵列相应参数的最优值。仿真对比实验及其分析表明,该新型阵列可以在减少换能器阵元使用数量、增大阵元间距的同时,改善阵列的指向性,并能提高声能量转化效率,使更多的声能集中在主瓣方向。Aiming at the problems of low energy conversion rate,high cost and high machining accuracy in common one-dimensional linear array and two-dimensional planar array,a rotating paraboloid transducer array is designed based on the construction of directivity function of arbitrary three-dimensional array.The planar transducer array is rotated into a paraboloid type,and the optimal parameters of the rotating paraboloid transducer array are determined by the directivity function.The simulation results show that the new array can not only reduce the number of transducer elements,but also increase the array spacing,improve the directivity of the array,and improve the efficiency of acoustic energy conversion,so that more acoustic energy is concentrated in the direction of the main lobe.

关 键 词：超声波 换能器 阵列 指向性 旋转抛物面 

分 类 号：TN912[电子电信—通信与信息系统]