超磁致伸缩伺服阀电-机转换器磁场分析与优化

基金项目:

国家自然科学基金项目(51175243,50805080)

航空科学基金项目(20110752006,20090752008)

流体动力与机电系统国家重点实验室2011年度开放基金项目(GZKF-201116)资助

Optimizing Magnetic Field of Giant Magnetostrictive Actuator for Servo Valve

1.
Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016;
2.
State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027;
3.
Flight Automatic Control Research Institute, Xi'an 710065

摘要: 提出一种面向高频伺服阀的新型超磁致伸缩执行器驱动结构。采用有限元法对所设计超磁致伸缩执行器磁场分布进行了数值模拟,分析了驱动与偏置电流、超磁致伸缩棒尺寸、永磁体及输出杆结构形式等因素对执行器磁场分布的影响,揭示了其影响与作用规律。以数值模拟结果为依据对执行器结构形式与设计参数进行了优化,数值模拟及其优化结果与实验曲线基本吻合。
- 超磁致伸缩执行器 /
- 有限元分析 /
- 优化
Abstract: We design a novel structure of the giant magnetostrictive actuator (GMA) for high-frequency servo-valve and then use the FEM to perform the numerical simulation of the magnetic field distribution of the GMA we de-signed. We analyze the effects of drive and bias currents, the size of giant magnetostrictive rod, the structural form of permanent magnet and its output rod on the magnetic field distribution. Finally, we use the numerical simulation results to optimize the structural form and design parameters of the GMA. The simulation results are in agreement with optimization results and experimental curves, thus providing a theoretical basis for designing a high-perform-ance GMA.
- giant magnetostrictive actuator (GMA) /
- finite element method(FEM) /
- optimization

[1]	胡明哲,李强,李银祥等.超磁致伸缩材料的特性及应用研究[J].稀土金属材料与工程,2000,29(6):366～369
[2]	Jenner A G,Smith R J E,Wilkinson A J,et al.Action and trans-duction by giant magnetostrictive alloys[J].Mechatronics,2000,(4-5):457～466
[3]	贾振元,杨兴,郭东明等.超磁致伸缩材料微位移执行器的设计理论及方法[J].机械工程学报,2001,(2):3～5
[4]	王传礼,丁凡,许贤良.基于GMM转化器喷嘴挡板伺服阀的研究[M].徐州:中国矿业大学出版社,2006:93～95
[5]	William B J Zimmerman.Comsol Multiphysics有限元法多物理场建模与分析[M].北京:人民交通出版社,2007
[6]	李跃松,朱玉川,吴洪涛等.射流伺服阀用超磁致伸缩执行器磁场建模与分析[J].兵工学报,2010,(12):1587～1592