磁控形状记忆合金温度与磁感应强度关系模型研究

摘要

磁控形状记忆合金(Magnetically Controlled Shape Memory Alloy,MSMA)作为一种新型的传感器材料,具有灵敏度高、响应速度快和能量密度高等特性.目前,研究人员对温度和磁感应强度之间的关系模型还未形成统一明确的认识,无法确定温度对磁感应强度的影响大小,而磁感应强度的幅度变化决定了传感特性的灵敏度,因此限制了MSMA材料在超精密传感器领域中的应用.在分析现有求解曲线关系模型方法的基础上,采用了多项式回归方法求解温度与磁感应强度的关系模型.结果表明,采用多项式回归方法得出的温度与磁感应强度的关系模型的拟合精度很高,方法可行.%As a new type of sensor material,Magnetically Controlled Shape Memory Alloy (MSMA) has high sensitivity,fast re-sponse,high energy density and so on.On the one hand,the researchers have not yet a unified understanding for the relationship model between the temperature and the magnetic induction intensity,so that they are unable to determine the effect of temperature on the magnetic induction intensity;on the other hand,the magnitude of magnetic induction intensity changes determine the char-acteristics of sensitivity,thus the application of MSMA material is limited in the field of ultra-precision sensor.On the basis of an-alyzing the existing methods of curve relationship model,the relationship model between temperature and magnetic induction in-tensity is solved by polynomial regression method.The results show that the fitting accuracy of the model is very high,which proves the feasibility of the polynomial regression method.