| 基于稀土超磁致伸缩材料的微致动器设计 |
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| 引用本文： | 余佩琼,梅德庆,陈子辰.基于稀土超磁致伸缩材料的微致动器设计[J].农业机械学报,2003,34(3):105-108. |
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| 作者姓名： | 余佩琼 梅德庆 陈子辰 |
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| 作者单位： | 1. 浙江工业大学信息学院,310014,杭州市
2. 浙江大学现代制造工程研究所,310027,杭州市 |
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| 基金项目： | 国家自然科学基金资助项目 (项目编号 :5 0 0 75 0 78) |
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| 摘 要： | 选择Terfenol-D作为微致动器主要材料，采用弹簧对GMM棒施加一定的预压力以获得较大的磁致伸缩应变，采用偏置磁场消除GMM棒的倍频现象并使之工作在线性段，对磁路进行了分析和优化设计。针对电磁线圈工作发热及涡流损耗引起的GMM棒温升，采取了强制水冷方法并专门设计了一个恒温冷却系统用以消除材料的热变形对致动精度的影响。
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| 关 键 词： | 稀土 超磁致伸缩材料 微致动器 设计 微机电系统技术 |
| 修稿时间： | 2002年1月17日 |
Design of a Micro-displacement Actuator Based on Giant Magnetostrictive Material |
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| Yu Peiqiong.Design of a Micro-displacement Actuator Based on Giant Magnetostrictive Material[J].Transactions of the Chinese Society of Agricultural Machinery,2003,34(3):105-108. |
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| Authors: | Yu Peiqiong |
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| Institution: | Yu Peiqiong(Zhejiang University of Technology) Mei Deqing Chen Zichen(Zhejiang University) |
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| Abstract: | Giant magnetostrictive material (GMM) is a special smart material and Terfenol D is an example of this material. When placed GMM in a magnetic field aligned with material magnetostrictive axis, it will expand quickly and forcefully. A giant magnetostritive actuator shows a great potential due to its high force and short reaction time in applications, such as active vibration control system, machine tools and aeronautics. Based on the characteristics of a giant magnetostrictive material, the design of an actuator is presented in this paper. A special attention is paid to magnetic and mechanical design aspects to improve the performance of an actuator. Furthermore, In order to keep the GMM temperature at constant, a temperature control system was developed. |
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| Keywords: | Electromagnetics Micro displacement actuator Giant magnetostrictive material Design |
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