超磁致伸缩驱动器磁路设计与仿真  

Design and Simulation for Magnetic Circuit in Giant Magnetostrictive Actuator

作　　者：闫洪波[1] 高鸿 牛禹 郝宏波 YAN Hong-bo;GAO Hong;NIU Yu;HAO Hong-bo(College of Mechanical Engineering,Inner Mongolia University of Science&Technology,Inner Mongolia Baotou 014010,China;Baotou Research Institute of Rare Earths,Inner Mongolia Baotou 014030,China)

机构地区：[1]内蒙古科技大学机械工程学院,内蒙古包头014010 [2]包头稀土院,内蒙古包头014030

出　　处：《机械设计与制造》2022年第2期242-246,251,共6页Machinery Design & Manufacture

基　　金：科技部创新方法工作专项资助项目(2017M010660)。

摘　　要：磁路主要为GMA提供激励磁场与偏置磁场叠加的驱动磁场,驱动磁场强度直接影响GMA的输出位移。因此,GMA磁路的结构参数设计是提高电磁转换效率和充分发挥GMM棒特性的关键因素。通过分析GMA的工作原理,将GMM棒中轴线上的磁场强度均匀率作为评价标准和主要设计原则。在给定输出位移和输出力的基础上,分别对偏置磁场选取以及GMM棒、激励线圈、磁回路的结构参数进行设计;使用Ansoft Maxwell仿真分析GMA的磁路。结果表明GMA磁场分布更均匀,使均匀率提高到97.62%,验证设计的正确性。The magnetic circuit mainly provides the driving magnetic field forGMA,which is superimposed by the exciting magnetic field and the bias magnetic field. The intensity of the driving magnetic field directly affects the output displacement of GMA.Therefore,the structure parameter design of GMA magnetic circuit is the key factor to improve the electromagnetic conversion efficiency and give full play to GMM characteristics.By analyzing the working principle of GMA,the uniformity of magnetic field intensity on the axis of GMM rod is taken as the evaluation standard and the main design principle.On the basis of given output displacement and output force,the selection of bias magnetic field and the structural parameters of GMM rod,excitation coil and magnetic circuit are designed respectively. The magnetic circuit of GMA is simulated and analyzed by Ansoft Maxwell.The results show that the magnetic field distribution is more uniform,and the uniformity is increased to 98.65%.The correctness of the design is verified.

关 键 词：超磁致伸缩驱动器 磁路设计 均匀率 Ansoft Maxwell仿真分析 

分 类 号：TH16[机械工程—机械制造及自动化]