| 阀用超磁致伸缩致动器偏置磁场分布结构设计 |
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| 引用本文： | 郑佳伟,何忠波,周景涛,薛光明,荣策,柏果.阀用超磁致伸缩致动器偏置磁场分布结构设计[J].液压与气动,2018,0(9):33-37. |
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| 作者姓名： | 郑佳伟 何忠波 周景涛 薛光明 荣策 柏果 |
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| 作者单位： | 陆军工程大学石家庄校区车辆与电气工程系, 河北石家庄050003 |
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| 基金项目： | 国家自然科学基金(51275525) |
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| 摘 要： | 在液压阀工作空间环境限制的条件下，设计了一种体积精小、结构紧凑的阀用超磁致伸缩致动器。针对该种致动器内部偏置磁场强度均匀性较差的问题，利用有限元仿真方法对其偏置磁场分布结构进行了分析及设计，通过引入磁场不均匀度及平均磁场强度两性能指标对偏置磁场分布结构进行区别，同时结合实际情况，确定了最佳偏磁分布结构为超磁致伸缩棒段数n=3时；制作了阀用超磁致伸缩致动器试验样机，并对样机磁场强度进行了测试。实验结果表明，超磁致伸缩棒表面的磁场分布与仿真结果具有相同的变化趋势，其磁场不均匀度约为22.7%，说明所设计偏置磁场结构是合理的，该研究对于液压阀件的设计具有一定意义。
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| 关 键 词： | 超磁致伸缩致动器 偏置磁场 结构设计 有限元仿真 液压阀 |
| 收稿时间： | 2018-06-20 |
Distribution Structure Design on Bias Magnetic Field of Giant Magnetostrictive Actuator for Hydraulic Valve |
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| ZHENG Jia-wei,HE Zhong-bo,ZHOU Jing-tao,XUE Guang-ming,RONG Ce,BAI Guo.Distribution Structure Design on Bias Magnetic Field of Giant Magnetostrictive Actuator for Hydraulic Valve[J].Chinese Hydraulics & Pneumatics,2018,0(9):33-37. |
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| Authors: | ZHENG Jia-wei HE Zhong-bo ZHOU Jing-tao XUE Guang-ming RONG Ce BAI Guo |
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| Affiliation: | Army Engineering University， Department of Vehicle and Electrical Engineering of Shijiazhuang Campus， Shijiazhuang， Hebei050003 |
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| Abstract: | Under the condition of limited working space of hydraulic valve, a delicate and compact giant magnetostrictive actuator for hydraulic valve is designed. Then, for the problem of poor homogeneity of bias magnetic field intensity, its distribution structure is analyzed and designed by finite element simulation. By introducing two performance indexes of magnetic field non-uniformity and average magnetic field strength, we distinguish bias magnetic field distribution structures, and at the same time, combined with actual conditions, it is determined that the optimum distribution structure is when the number of GMM rod segments is 3. Finally, a GMA test prototype for valves is fabricated and its magnetic field strength is tested. The experimental results show that the magnetic field distribution on GMM rods has a same changing trend as the simulation results and its magnetic field unevenness reaches 22.7%, which indicates that the designed distribution structure on bias magnetic field is reasonable and it is of significance for design of hydraulic valves. |
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| Keywords: | giant magnetostrictive actuator bias magnetic field structural design finite element simulation hydraulic valve |
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