闭合磁路的磁弹索力传感器优化及实验研究

针对目前已经工程应用的磁弹索力传感器的磁路结构、工作点及激励信号等设计的不足，从铁磁性材料的磁特性出发，结合基于磁弹效应的索力测量原理，设计并制作了单“U”型磁轭的闭合磁路磁弹索力传感器，确定了激励信号的幅值、频率及传感器工作点。实验结果表明，在激励峰峰值为6 V时，缆索处于近饱和磁化阶段，此时传感器灵敏度最高，为32.470 mV/kN，其测量结果的线性相关系数为0.9704。

The optimization and experimental study of Closed-Loop Magneto-Elasto Cable Tension Sensor

Presently,the design of magneto￣elasto cable tension sensor’s parameters such as sensor structure,working point and drive signal is not perfect. In order to make the sensitivity higher,the magnetic properties of ferromagnetic materials and the principle of cable force measurement based on magneto￣elasto effect was discussed. A“U”shaped of single bypass closed￣loop Magneto￣Elasto Cable Tension Sensor was designed,then confirmed the amplitude and frequency of the drive signal,and the working point has also been determined. The results shows that while the Vp-p of the drive is 6 V,the sensitivity reached maximum,32.470 mV/kN. Moreover,this have been proved that it runs a high degree of linearity to stress,the linearly dependent coefficient is 0.970 4.