【摘要】 利用自行设计的实验装置研究了NiMnGa合金样品静态时磁场与形变之间的关系,并且实测了交流磁场下温度、压力、磁场与样品形变的动态特性曲线,研究了NiMnGa合金样品的外特性。在此基础上,利用NiMnGa合金响应频率快、输出应变应力大等特点,设计了一种可以减少励磁功率、消除温度影响和提高控制精度的新型差动式NiMnGa合金执行器,阐述了其工作原理,制造了样机并给出了实验结果,验证了该设计方案和控制系统的可行性。更多还原

【Abstract】 With self-designed equipment,the static relationship between the deformation of a NiMnGa alloy sample and the magnetic field is studied.The dynamic characteristics of this alloy sample under temperature,stress,magnetic field and strain are measured.As a result,a novel differential NiMnGa alloy actuator is proposed,which has fast response frequency and great output strain.The working principle of the designed actuator is explained.Experimental result shows the proposed system is feasible.更多还原