传感技术学报2017，Vol.30Issue(6)：836-840,5.DOI:10.3969/j.issn.1004-1699.2017.06.006
Fe-Ga合金换能器动态输出特性分析
Analysis of Dynamic Output Characteristics of Fe-Ga Transducer
摘要
Abstract
Fe-Ga alloy has the advantages of large strain, short response time, high energy density, high magnetic coupling coefficient and simple driving mode. Fe-Ga alloy transducer will generate eddy current losses with high fre-quency driving current. The larger driving current leads to more obvious skin effect,eddy current losses and inhomo-geneous distribution of magnetic field,which will affect the output displacement and power of the transducer. The distribution of magnetic field in Fe-Ga rod under different frequencies is analyzed based on Maxwell's equations. The magnetic field distribution in Fe-Ga transducer and relationship between output displacement and frequency are studied based on structural dynamics model of Fe-Ga transducer. The results show that the resonance frequency of the Fe-Ga transducer used in this paper is 700 Hz and the maximum output displacement is 6 μm.关键词
涡流损耗/Fe-Ga合金/动态输出特性/COMSOLKey words
eddy loss/Fe-Ga alloy/dynamic output characteristics/COMSOL分类
信息技术与安全科学引用本文复制引用
翁玲,胡秀玉,赵青,孙英..Fe-Ga合金换能器动态输出特性分析[J].传感技术学报,2017,30(6):836-840,5.基金项目
国家自然科学基金项目(51201055) （51201055）
河北省高等学校科学技术研究重点项目(ZD2015085) （ZD2015085）
天津市高等学校科技发展基金项目(20140421) （20140421）
教育部留学归国人员启动基金和河北省引进留学人员项目(CG2013003001) （CG2013003001）
