摘要
针对目前换能器工作效率低,结构性差等问题,设计了一种以Fe-Ga材料为核心的窗式换能器。搭建实验平台对窗式换能器中的核心元件Fe-Ga材料进行磁特性测量,绘制了Fe-Ga材料在不同频率下的磁滞曲线,计算了对应的磁损耗、矫顽力以及剩磁的大小。构建了变幅杆的理论模型,以变幅杆纵振波动方程为基础,通过理论计算,推导了变幅杆的谐振频率、位移节点、放大倍数。最后通过COMSOL多物理场有限元软件对换能器建立了仿真模型,通过磁-力耦合对换能器进行了频域和时域仿真,得到了换能器的谐振频率、位移大小以及应力分布情况,通过仿真验证了换能器理论计算的准确性,为下一步的换能器制作提供了有效的指导作用。
In view of the low efficiency and poor structure of the transducer,a window transducer based on Fe-Ga material is designed.An experimental platform was built to measure the magnetic properties of the Fe-Ga material,the core element of window transducer.The hysteresis curves of Fe-Ga material at different frequencies were drawn,and the corresponding magnetic loss,coercive force and remanence were calculated.Based on the longitudinal vibration wave equation of the horn,the resonance frequency,displacement node and magnification of the horn are deduced by theoretical calculation.Finally,the simulation model of the transducer is established by COMSOL multiphysical field finite element software.The frequency and time domain simulation of the transducer is carried out by magnetic force coupling.The resonance frequency,displacement,and stress distribution of the transducer are obtained.The accuracy of the theoretical calculation of the transducer is verified by simulation,which provides an effective guidance for the next step of transducer production.
作者
陈长江
翁玲
高杰聪
赵轩
张原野
陈盛华
CHEN Changjiang;WENG Ling;GAO Jiecong;ZHAO Xuan;ZHANG Yuanye;CHEN Shenghua(State Key Laboratory qf Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300130,China;Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province,Hebei University of Technology,Tianjin 300130,China)
出处
《传感技术学报》
CAS
CSCD
北大核心
2020年第8期1085-1090,共6页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金项目(51777053,52077052)
河北省自然科学基金重点项目(E2017202035)。
