【摘要】 将铁基纳米微晶合金薄带缠绕并嵌入圆柱型应力敏感芯,利用压磁效应,使传感器实现拉压力测量。介绍了传感器的结构和原理,推导出传感器的输出特性方程。通过静态压缩试验,分析了传感器的激磁磁场强度、激磁电流强度、激磁频率以及温度变化对传感器输出的影响,得出了室温下传感器的静态特性。试验数据显示,传感器的最大非线性误差小于1.16%F.S,重复性误差为0.53%F.S,迟滞误差为0.36%F.S,平均灵敏度为1.14 m V/k N.对一般的工程应用是可行的。更多还原

【Abstract】 By wrapping Fe-based nanocrystalline alloy strip into a cylindrical stress-sensitive magnetic,a novel tension and compression force sensor was made based on magneto-elastic effect. The principle and structure of the sensor were presented,and its output characteristic equation was derived. By making a tensile and compression measuring experiment,the excitation magnetic field intensity,current intensity,frequency and temperature change of the sensor influence on its output were analyzed. The static characteristics and characteristics of the load cell were got. The experimental result shows the maximum linearity error of the load cell is less than1. 16% F. S,repetitive error is 0. 53% F. S,hysteresis error is 0. 53% F. S and the average sensitivity is 1. 14. The load cell can be used for general engineering applications.更多还原