Galfenol合金扭矩传感器优化设计与实验

Optimization design and experiment of Galfenol alloy torque sensor

结合逆磁致伸缩效应,设计了一种Galfenol合金贴片接触式扭矩传感器,对贴片的厚度、栅条宽度等参数进行了仿真优化,根据仿真结果搭建了实验平台。仿真与实验结果表明:该传感器在加载情况下,灵敏度为0.721 mV/Nm,最大误差为6.31%;在卸载情况下,其灵敏度为0.684 mV/Nm,最大误差为6.59%。研究结果表明,该传感器在中小范围扭矩测量的精度与灵敏度较高、适应性能好,可为扭矩传感器研究提供参考和借鉴。

In this paper,a contact torque sensor based on Galfenol alloy patch is designed according to the inverse magnetostriction effect,and the patch thickness and grid width are simulated and optimized.Finally,the experimental platform is built according to the simulation results.The results of simulation and experiment show that under loading condition the sensitivity of the sensor is 0.721 mV/Nm and the maximum error is 6.31%;that under unloading condition,the sensitivity is 0.684 mV/Nm,and the maximum error is 6.59%.The research shows that the sensor has high precision and sensitivity in small and medium range of torque measurement,which provides reference for experimental research of torque sensor.