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Bending moment and torque detection: A passive, wireless, and self-decoupled approach

机译：弯矩和扭矩检测：被动，无线和自耦的方法

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摘要

In this study, a bending moment and torque detecting sensor that works in a passive, wireless, and self-decoupled manner was proposed, analyzed, fabricated, and tested. The sensor was composed mainly of a bending moment deforming ring, a torque deforming sheet, and a cardan. The bending moment deforming ring bore the bending moment separately and the torque deforming sheet withstood the torque individually. The self-decoupling operation of the bending moment and torque was realized by the cardan. Then, the bending moment and the torque were measured separately. The decoupling operation was based on the mechanical structure. Two pieces of magnetostrictive material were pasted on the bending moment deforming ring and torque deforming sheet as the sensing material. The passive and wireless characteristics were fulfilled based on the Villari effect. Finite element method (FEM) analysis was conducted to verify the decoupling principle and acquire the most appropriate position for the sensing material. Experiments were carried out to test the performance of the sensor. The experimental results demonstrated the sensor had a good self-decoupling ability with maximum decoupling error of 1.43%. The sensor was able to work dynamically with an average voltage change ratio of 1.87%. Furthermore, the sensor showed advantages of being passive, and wireless, and had the ability to work in a liquid environment. Therefore, the sensor can be installed on a cutting tool holder of a machine center to detect the compound force on the cutting tool.
机译：在该研究中，提出了一种弯矩和扭矩检测传感器，其在被动，无线和自去耦的方式中起作用，分析，制造和测试。传感器主要由弯矩变形环，扭矩变形片和载体组成。弯曲力矩变形环孔分别弯曲弯矩，并且扭矩变形片单独用扭矩。弯曲力矩和扭矩的自耦操作由载体实现。然后，分别测量弯矩和扭矩。去耦操作基于机械结构。将两块磁致伸缩材料粘贴在弯矩变形环和扭矩变形片上作为传感材料。基于Villari效应，实现了被动和无线特性。进行有限元方法（FEM）分析以验证解耦原理并获得传感材料的最合适的位置。进行实验以测试传感器的性能。实验结果表明，传感器具有良好的自耦能力，最大去耦误差为1.43％。传感器能够使用平均电压变化比为1.87％的动态工作。此外，传感器显示了被动和无线的优点，并且具有在液体环境中工作的能力。因此，传感器可以安装在机器中心的切削刀架上以检测切削工具上的复合力。

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