新型精密LVDT仿真分析  

Simulation Analysis of the New Type Precise LVDT

作　　者：钱谦[1] 刘武发[1] 郭松路 

机构地区：[1]郑州大学机械工程学院,河南郑州450001

出　　处：《机械设计与制造》2014年第8期214-216,共3页Machinery Design & Manufacture

基　　金：国家自然科学基金(50975262);河南省教育厅自然科学研究计划项目(2010B460020);河南省教育厅科学技术研究重点项目(13B460384)

摘　　要：影响线性可变差动变压器式位移传感器(LVDT)灵敏度和线性度的关键因素是其轴向磁场的强度和分布。针对新型精密LVDT的要求,传感器次级线圈采用多段阶梯绕线结构,以加强传感器两端区域磁场强度,使其轴向磁场分布趋于均匀。建立了改进后的LVDT结构模型,利用Maxwell 2D有限元软件分别对LVDT模型的静态磁场和瞬态场进行了仿真分析,得出了相应的关系曲线。结果表明,次级线圈采用多段阶梯结构能够提高传感器的灵敏度和线性度,并且与传统分析方法比较直观性、可视性更好。The key factor impacting LVDT sensitivity and linearity is the axial magnetic field intensity and distribution. According to the needs of the new type precise LVDT, in order to strengthen the regional magnetic field strength on both ends of the sensor and make the distribution of the axial magnetic field tend to be uniform, its secondary coil adopted multistage winding structure. A modified LVDT structure model was built, the finite element software Maxwell 2D was used to carry out the static and the transient field simulation analysis and the corresponding relation curves were obtained. The results show that multistage structure of the secondary coil can improve its sensitivity and linearity and also have a better intuition and visuality than traditional analysis methods.

关 键 词：线性可变差动变压器 多段阶梯结构 MAXWELL 2D 灵敏度 线性度 

分 类 号：TH16[机械工程—机械制造及自动化] TP212[自动化与计算机技术—检测技术与自动化装置]