摘要
磁控形状记忆合金(MSMA)在磁场作用下产生形变,施加外部激振力时会引发材料本身磁感应强度变化,进而表现为电信号变化。本文基于该特性设计和制作了MSMA传感器样机,并搭建了实验系统,建立了基于马氏体变体体积分数变化的感应电压模型,研究了偏置磁场、预压力和激振力(幅值和频率)多参数变化时的MSMA传感器输出特性。通过传感器实验值与计算值的比较,验证了多个参数变化时传感器模型的通用性和正确性,为MSMA传感器在复杂条件下的应用奠定了理论和技术基础。
Magnetic controlled shape memory alloy （MSMA） produces deformation under the action of magnetic field, the magnetic flux density of the material itself can change when the external exciting force is applied, and then manifest as an electric signal change. Based on the characteristics, a MSMA sensor prototype is designed and produced in this paper, and the experimental system is built. Induced voltage model is established based on the change of Martensitic variants volume fraction. The output properties of MSMA sensor are studied under the multi-parameter change of bias magnetic field, prepressure and exciting force （frequency and amplitude）. By compared of experimental values and calculated values of sensor, the universality and validity is proved on sensor model at multi-parameter change, the research work gives a foundation in theory and technology both for the application of MSMA sensor in complex condition.
出处
《电气工程学报》
2017年第8期16-20,41,共6页
Journal of Electrical Engineering
基金
国家自然科学基金(51377110)
沈阳理工大学智能与网络化测控技术重点实验室开放基金资助课题(4771004kfs54)资助
