超磁致伸缩式无缆惯性冲击驱动器的研究（英文）

Research on giant magnetostrictive wireless inertial drive mechanism

现有的惯性冲击式（IDM）驱动器几乎都以堆叠式或双晶片式压电材料为驱动元件。压电式IDM具有诸多优势的同时,也存在有缆驱动、移动速度小、负载能力弱的不足。针对这一问题,提出采用Terfenol-D复合悬臂梁为驱动源,构出一种新型的惯性冲击无缆驱动器,可克服供电电缆的自重和振动对驱动器的精度产生的影响,结合有限元分析软件COMSOL Multiphysics对驱动器进行磁场分析和磁机耦合分析,并通过样机制作与实验测试,得出了驱动器的工作频率在5~45 Hz,工作电流在0~5 A,驱动器的最小步距380 nm。实验结果表明该驱动器在低频条件下,可满足稳定输出较大位移并精确可控的要求,为实现无缆驱动提供了一种新手段。

Current impact drive mechanism（ IDM） almost adopts stacked or bimorph piezoelectric material as driving element.Piezoelectric IDM has many advantages,but also has the disadvantage of cable driven,small moving speed,and weak load capacity. To solve this problem,we put forward to adopting Terfenol-D composite cantilever beam as the driving source to construct a new wireless IDM,which can overcome the drive accuracy influence of the power supply cable＇s weight and vibration. Combined with finite element analysis software COMSOL Multiphysics,the analysis of magnetic field and magnetic-structure coupling simulation have been carried out. By prototype making and experimental test,it is concluded that the working frequency of IDM was 5 ~ 45 Hz,the working current was 0 ~ 5 A,and the minmun step size is 380 nm. The experimental results show that the IDM can meet the requirements of stable output and precise control at low frequency,and provide a new method for the implementation of wireless drive.