超磁致伸缩驱动微夹钳研究

Research on microgripper based on giant magnetostrictive Material

为了克服现有微夹钳夹持力和夹持范围不足的问题,以超磁致伸缩材料(GMM)为驱动源提出了一种新型的微夹钳.利用GMM棒在磁场变化时发生伸缩形变提供驱动力,并采用柔性铰链和杠杆机构对输出位移量进行放大,分析并优化磁回路以减小损耗.对超磁致伸缩驱动微夹钳进行了性能测试,结果表明所提出的微夹钳具有夹持范围大、响应速度快、夹持力易控制的优点.

In order to overcome the shortcomings of the present microgripper, a new type of microgripper based on giant magnetostrictive material was presented. Driving force is provided by the expansion and shrinkage of GMM in magnetic field. Output displacement is amplified by using flexibility hinge and lever structure. Analyzing and optimizing the magnetism circuit can improve energy conversion of GMM material. We conducted a test of performance of microgripper based on giant magnetostrictive material, whose results indicate that using giant magnetostrictive to drive microgripper can not only realize quick response and large output force, but also control output force easily.