【摘要】 将铁基非晶态合金薄带缠绕成圆柱型应力敏感磁芯,基于压磁效应,使同一传感器实现既能测量拉力,又能测量压力。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。通过拉伸和压缩试验,分析了传感器的最佳激磁磁场强度、静态特性以及温度特性。试验数据显示,传感器测量拉伸和压缩载荷时,最大非线性误差分别为0.41%F.S和1.12%F.S,重复性误差分别为0.86%F.S和0.85%F.S,平均灵敏度为0.71 mV/kN和1.16 mV/kN。更多还原

【Abstract】 By wrapping Fe-based amorphous alloy strip into a cylindrical stress-sensitive magnetic a force sensor was made based on magneto-elastic effect,it can measure the tension,but also to measure the compression.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 best excitation magnetic field strength,static characteristics and temperature characteristics of the sensor were analyzed.The experimental result shows when the sensor measure tensile and compression force,its the maximum linearity error is respectively 0.41% F.S and1.12% F.S,repetitive error 0.86% F.S and 0.85% F.S,and the average sensitivity is respectively 0.71 mV/kN and 1.16 mV/kN.更多还原