非接触感应式角位移传感器及其有限元分析

摘要

An inductive angle sensor for concentrator was designed,the mechanical structure of sensor mainly includes two parts,the stator and the rotor,and the rotor was fixed with inclined plate,the angle of inclined plate was converted into a corresponding voltage signal through electromagnetic coupling.Transfer function of sensor was deduced according to Laplace transform,sensor model was established by the finite element method,the working principle of sensor was simulated,and the correctness of sensor working principle was verified.Finally the calibration experiment was implemented and the sensitivity of angular displacement sensor is about 78 mV/(°),the nonlinear error was about 0.67％,the hysteresis error was about O.88％,the repeatability error was about 0.63％.%设计了一种感应式角位移传感器,机械结构主要包括定子和转子两部分,其中转子部分与倾斜板固定,通过电磁耦合可以将倾斜板的倾角转换成对应的电压信号.根据拉氏变换得到了传感器的传递函数,建立了传感器的有限元模型并对它的工作原理进行了仿真,验证了传感器工作原理的正确性.最后通过标定得到了传感器的灵敏度约为78 mV/(.),非线性误差约为0.67％,迟滞性误差约为0.88％,重复性误差约为0.63％.