阵元失效对超声阵列换能器的影响及优化研究

doi:10.3969/j.issn.0372-2112.2017.08.027

电子学报 ›› 2017, Vol. 45 ›› Issue (8): 1995-2000.DOI: 10.3969/j.issn.0372-2112.2017.08.027

阵元失效对超声阵列换能器的影响及优化研究

尹冠军, 范皓然, 康栋栋, 郭建中

陕西师范大学物理学与信息技术学院, 陕西师范大学应用声学所, 陕西西安 710119

收稿日期:2016-05-27 修回日期:2016-10-24 出版日期:2017-08-25
- 通讯作者:
- 郭建中
- 作者简介:
- 尹冠军,男,1991年11月出生于陕西西安,现为陕西师范大学物理信息技术学院、陕西省应用声学所博士研究生在读,主要研究方向为应用声学及医学超声.E-mail:yinguanjun123@126.com
- 基金资助:
- 国家自然科学基金 (No.11574192，No.11274217）; 陕西师范大学中央高校基本科研业务费专项资金资助 (No.GK201704003）

The Optimization Research on Element Failure of Ultrasonic Array Transducer

YIN Guan-jun, FAN Hao-ran, KANG Dong-dong, GUO Jian-zhong

School of Physics and Information Technology, Shaanxi Normal University, Institute of Applied Acoustics, Shaanxi Normal University, Shaanxi Xi'an 710119, China

Received:2016-05-27 Revised:2016-10-24 Online:2017-08-25 Published:2017-08-25
- Supported by:
- National Natural Science Foundation of China (No.11574192, No.11274217); Fundamental Research Funds for the Central Universities of Shaanxi Normal University (No.GK201704003)

摘要/Abstract

摘要： 超声阵列换能器单个或多个阵元的振动效率、几何尺寸等参数的改变，会影响整个阵列的声场分布等性能参数，降低超声检测的分辨率及相应的检测效果.基于阵列换能器声压分布理论，利用自适应算法，从阵元激励的角度，探讨阵列超声换能器阵元激励的优化方法，消除阵元失效的影响.研究结果表明，利用声场分布空间中有限数量的优化参考点，经过对激励参数的优化，可以使有阵元失效阵列的整个声场分布、指向性及聚焦特性等性能指标与标准无阵元失效阵列的基本一致，达到期望的标准声场分布的参数指标，大大降低超声检测设备的应用成本，提高检测效果.

关键词: 超声相控阵, 阵元失效, 指向性, 分布误差, 自适应算法

Abstract: Array transducer is the crucial component of all kinds of these instruments depending on ultrasonic phased array technology.While,efficiency changing and size error of a single element or several elements can make significant negative effects on the acoustic field and its directivity,and reduce the detection effect on the field of high performance and high resolution application.Using the adaptive algorithms,we presented a method to optimize and correct the array from the excitation mode of elements.By adjusting the excitation amplitude of each normal elements,the influence to the acoustic field from element failure can be decreased availably.The experiment results and theoretical analysis indicate that this method is much available to correct the acoustic field of the array with disabled elements by using the acoustic pressure of a few reference points in the field.In consequence,the array transducer with element failure or size errors can be well optimized by the method we proposed.

Key words: ultrasonic phased arrays, element failure, directivity, distribution errors, adaptive algorithm

中图分类号:

TB559

尹冠军, 范皓然, 康栋栋, 等. 阵元失效对超声阵列换能器的影响及优化研究[J]. 电子学报, 2017, 45(8): 1995-2000.

YIN Guan-jun, FAN Hao-ran, KANG Dong-dong, et al. The Optimization Research on Element Failure of Ultrasonic Array Transducer[J]. Acta Electronica Sinica, 2017, 45(8): 1995-2000.

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阵元失效对超声阵列换能器的影响及优化研究

The Optimization Research on Element Failure of Ultrasonic Array Transducer

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