叠层复合磁致伸缩材料驱动器的输出位移特性  

Output displacement of actuator based on Terfenol-D multilayered composite

作　　者：李淑英[1,2] 王博文[1] 周严[1] 翁玲[1] 王志华[1] 

机构地区：[1]河北工业大学电磁场与电器可靠性省部共建重点实验室,天津300130 [2]天津工业大学理学院,天津300160

出　　处：《仪器仪表学报》2009年第1期71-75,共5页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(50571034)资助项目

摘　　要：采用树脂粘结法制备了叠层复合Terfenol-D棒状材料,并使Terfenol-D层的叠片方向垂直于Terfenol-D的〈112〉轴向。研究了基于此材料的驱动器的输出位移特性,同时还研究了驱动器的涡流损耗.研究结果表明:当驱动磁场频率为2 500～3 000 Hz时,驱动器输出位移最大峰-峰值达到最大25.0～26.0μm,同时输出位移波形随频率也有明显变化;直流偏置磁场对输出位移的影响规律随工作频率不同而不同;基于叠层复合Terfenol-D的驱动器的涡流损耗较基于块状Terfenol-D的驱动器的涡流损耗大大降低。A magnetostrictive muhilayered composite was prepared with its laminations perpendicular to （112） axes based on the calculation of magnetostriction of Terfenol-D composites. Using the Terfenol-D magnetostrictive multilayered composite an actuator was made. The dependence of the output displacement of the actuator on AC driving magnetic field frequency and DC bias magnetic field is investigated. The vortex loss of the actuator is studied. It is found that the maximum peak to peak displacement y（p_p）max reaches to 25.0 -26.0 μm at frequency of 2 500 -3 000 Hz. At same time the dynamic displacement wave changes obviously at different frequencies. The influence of bias magnetic field on the output displacement is different at different frequencies. In addition, the vortex loss of the actuator based on Terfenol-D muhilayered composite is reduced greatly.

关 键 词：叠层复合Terfenol-D 直流偏置磁场 交流驱动磁场频率 输出位移波形 涡流损耗 

分 类 号：TM153[电气工程—电工理论与新技术]