闭合磁路的磁弹索力传感器优化及实验研究  

The Optimization and Experimental Study of Closed-Loop Magneto- Elasto Cable Tension Sensor

作　　者：宋凯[1] 柳权[1] 刘国勇 刘付鹏 徐帆 

机构地区：[1]南昌航空大学无损检测技术教育部重点实验室,南昌330063 [2]江西飞尚科技有限公司,南昌330063

出　　处：《传感技术学报》2015年第2期188-192,共5页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金项目(51265041);江西省教育厅科技项目(GJJ12406);无损检测技术教育部重点实验室基金项目(ZD201029003);南昌航空大学研究生创新专项基金(YC2013-009)

摘　　要：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6V时,缆索处于近饱和磁化阶段,此时传感器灵敏度最高,为32.470mV/kN,其测量结果的线性相关系数为0.9704。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 6V,the sensitivity reached maximum,32. 470mV/kN. Moreover,this have been proved that it runs a high degree of linearity to stress,the linearly dependent coefficient is 0. 970 4.

关 键 词：传感器 应力测量 磁弹效应 闭合磁路 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]