摘要
提出了一种可对双层媒质进行声聚焦的控制方法。通过预先设定目标区域内焦点处的声压,利用遗传算法求解相控阵的驱动向量。利用声场快速算法对12×12二维相控阵在双层生物媒质中的多焦点声场模式进行仿真。结果表明遗传算法能优化多焦点模式的声场增益,声强能最大限度地聚焦在目标区域内。
A control method of ultrasound focused on the double biological tissue is described.By pre-defined target area sound pressure at the focus,driven vector phased array is solved by genetic algorithm.This fast algorithm of ultrasound field is used to simulate the multi-focus field pattern in the double biological tissue produced by two-dimensional phased array consisting of 12×12 elements. The results show genetic algorithm can optimize the multi-focus pattern gain of the ultrasound field,making the sound intensity maximize the concentration of the target volume.
出处
《计算机工程与应用》
CSCD
北大核心
2011年第33期153-155,共3页
Computer Engineering and Applications
基金
国家自然科学基金(No.11174077)
湖南省自然科学基金(No.11JJ3079)
湖南省教育厅项目(No.09C646)~~
关键词
相控阵
双层生物媒质
声场优化
遗传算法
phased array
double biological medium
sound field optimization
genetic algorithm
