科技创新与应用2024，Vol.14Issue(11)：57-63,7.DOI:10.19981/j.CN23-1581/G3.2024.11.014
自易法测量矩形换能器超声功率研究
摘要
Abstract
A method for measuring the ultrasonic power of a rectangular transducer accurately and quickly based on self-re-ciprocity technique was explored.Firstly,the electroacoustic reciprocity principle in the self-reciprocity calibration method was used to analyze the relationship between the open-circuit voltage,the first echo current and the ultrasonic power,the expression for the calculation of the rectangular transducer ultrasonic power was derived based on self-reciprocity measurement,and the calculation method of diffraction coefficient was discussed.Then,the ultrasonic power of two rectangular transducers with different aspect ratios were measured under different excitation voltages using self-reciprocity method and radiation force balance method.The results ob-tained by the two methods were linearly fitted with the electric power and the square of effective value of driving voltage,respec-tively.The results indicated that the measurement consistency of the two methods was good,which showed the effectiveness of self-reciprocity method for the measurement of rectangular transducer ultrasonic power.Finally,the applicable scope of the method was discussed.关键词
矩形换能器/自易法/衍射系数/辐射力天平/超声功率测量Key words
rectangular transducer/self-reciprocity method/diffraction coefficient/Radiation Force Balance/ultrasonic power measurement分类
通用工业技术引用本文复制引用
宋仁杰,王亮,宋丹,罗曼,周小伟..自易法测量矩形换能器超声功率研究[J].科技创新与应用,2024,14(11):57-63,7.基金项目
国家自然科学基金青年科学基金项目(12304508) （12304508）
