舒亮,李传,吴桂初,陈定方.Fe-Ga合金磁致伸缩力传感器磁化模型建立与特性分析[J].农业机械学报,2015,46(5):344-349.
Shu Liang,Li Chuan,Wu Guichu,Chen Dingfang.Magnetization Model of Fe-Ga Magnetostrictive Force -Sensor and Its Characteristics[J].Transactions of the Chinese Society for Agricultural Machinery,2015,46(5):344-349.
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Fe-Ga合金磁致伸缩力传感器磁化模型建立与特性分析   [下载全文]
Magnetization Model of Fe-Ga Magnetostrictive Force -Sensor and Its Characteristics   [Download Pdf][in English]
投稿时间:2015-01-05  
DOI:10.6041/j.issn.1000-1298.2015.05.048
中文关键词:  磁致伸缩  Fe-Ga合金  Terfenol-D  力传感  磁化模型
基金项目:国家自然科学基金资助项目(51205293、51175395)、浙江省“钱江人才计划”D类计划资助项目(QJD1302003)和广西制造系统与先进制造技术重点实验室开放基金资助项目(11—031—12S06)
作者单位
舒亮 温州大学 
李传 武汉理工大学 
吴桂初 温州大学 
陈定方 武汉理工大学 
中文摘要:磁致伸缩力传感器依靠材料磁化强度的改变来表征外部力载荷的大小,研究了基于Fe-Ga合金磁致伸缩逆效应的力传感模型,采用三维有限元方法对力传感磁路进行了优化与设计。为了研究不同磁场和负载对材料磁化强度的影响,以均质能量公式为基础,在均质能量公式中引入以应力和磁场为自变量的吉布斯自由能函数,建立了描述合金磁化强度随应力变化关系的模型。为对模型进行验证,建立了一套磁致伸缩力传感特性测试系统,分别对Fe-Ga合金和Terfenol-D力传感特性进行测试与对比,验证试验表明所建立的模型可以较好预测磁化强度的变化,并且可以预测偏置磁场的影响。在Fe-Ga合金与Terfenol-D的对比试验中发现,Fe-Ga合金对偏置磁场更为敏感,并且磁滞非线性较Terfenol-D更小,由于无退火应力,Terfenol-D在偏置较低时出现负方向的磁化强度。
Shu Liang  Li Chuan  Wu Guichu  Chen Dingfang
Wenzhou University,Wuhan University of Technology,Wenzhou University and Wuhan University of Technology
Key Words:Magnetostrictive  Fe-Ga alloy  Terfenol-D  Force sensing  Magnetization model
Abstract:The magnetization model of a magnetostrictive force sensor was studied based on Fe-Ga alloy. The magnetic path of the sensor was optimized with 3D finite element method. Simulation results showed that the field distribution became linear when the magnetic path was optimized. In order to analyze the influence of biased field and loaded stress on material magnetization, the magnetization model was developed based on the homogeneous energy equation. The magnetic field and stress were taken as the independent variables in the Gibbs free energy formula thus the model could respond to both field and stress. The model was numerically solved using Newtons iteration method. In order to verify the model, a testing system was developed and both Fe-Ga alloy and Terfenol-D were tested. Comparisons of simulations and experiments showed that the proposed model could predict the changing of the magnetization properly. The influence of the biased field could be predicted as well. Comparisons of Fe-Ga alloy and Terfenol-D showed that Fe-Ga was more sensitive to the biased field and the hysteresis nonlinearity was lower than Terfenol-D. Since there is no annealed stress in Terfenol-D, it is observed negative magnetization when the material is subjected to cyclic stress with low biased field.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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