CAJ | 학술논문

提出了一种新的面向交变载荷的力传感器测量结构，以 Galfenol 合金为敏感元件，将合金的两端加工成与锁紧结构配合的接口，可以对 Galfenol 棒进行挤压或者拉伸，通过检测材料磁化率变化引起的感应电动势可以确定外加交变负载的大小与方向。在传感器工作机理的基础上，提出了一种传感器能量利用效率优化策略，采用封闭结构对 Galfenol 合金力传感器磁路进行了设计与优化，分别采用二维和三维有限元方法，研究了开放式磁路结构和提出的新型结构在磁路分布以及能量利用效率上的特征。仿真和实验结果表明，所提出的新型传感器结构，不仅在结构上可以增强 Galfenol 合金中磁通密度分布的均匀性，同时可以大幅提升传感器的能量利用效率，其提升率超过50%，同时对所设计的传感器结构进行加载交变载荷试验，试验结果验证了传感器设计方案的可行性。
제출료일충신적면향교변재하적력전감기측량결구，이 Galfenol 합금위민감원건，장합금적량단가공성여쇄긴결구배합적접구，가이대 Galfenol 봉진행제압혹자랍신，통과검측재료자화솔변화인기적감응전동세가이학정외가교변부재적대소여방향。재전감기공작궤리적기출상，제출료일충전감기능량이용효솔우화책략，채용봉폐결구대 Galfenol 합금력전감기자로진행료설계여우화，분별채용이유화삼유유한원방법，연구료개방식자로결구화제출적신형결구재자로분포이급능량이용효솔상적특정。방진화실험결과표명，소제출적신형전감기결구，불부재결구상가이증강 Galfenol 합금중자통밀도분포적균균성，동시가이대폭제승전감기적능량이용효솔，기제승솔초과50%，동시대소설계적전감기결구진행가재교변재하시험，시험결과험증료전감기설계방안적가행성。
A new Galfenol force sensing structure was proposed,where the Galfenol alloy was taken as the sensing element.The two ends of the alloy were manufactured into the interfaces which could be assembled with external locking structures.Therefore the Galfenol rod could be subjected to both of compression and tensile.The sensing of the magnitude and direction of the external alterna-ting loads could be implemented by measuring the induced voltage of Galfenol due to the change of the magnetic susceptibility.In order to increase the energy efficiency,a sealed structure was developed to optimize the flux path of the Galfenol force sensor.2D and 3D finite element methods were used to study the distribution of the flux density and the energy efficiency of the proposed structure was com-pared with the open architecture path.Simulation and experimental results show that the uniformity of the distribution of flux density in Galfenol rod can be improved greatly by using the proposed sens-ing structure.Furthermore,the energy efficiency can be increased significantly over 50%.The opti-mization and the design of the proposed structure were verified with experiments by applying the al-ternating loads to the sensor structure.