杠杆式应变暴露方法用于磁盘 F 形扭矩传感器设计。

A Lever-Type Method of Strain Exposure for Disk F-Shaped Torque Sensor Design.

机构信息

State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, China.

College of Automotive Engineering, Chongqing University, Chongqing 400044, China.

出版信息

Sensors (Basel). 2020 Jan 19;20(2):541. doi: 10.3390/s20020541.

DOI:10.3390/s20020541

PMID:31963789

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7014545/

Abstract

Disk-shaped torque sensors are widely used in robotic joints and wheel driving. However, in terms of conventional spoke-type geometries, there is always a trade-off between sensitivity and stiffness, because their strain exposure depends upon a bending deformation mode which causes strain nonuniformity. This paper presents a lever-type method of strain exposure that performs a uniaxial tension and compression deformation mode to optimize the strain uniformity and improve the trade-off. Moreover, on the basis of this approach, the proposed disk F-shaped torque sensor enjoys has axial thinness, easy installation of strain gauges and flexible customization. The simulation and experimental results have validated the basic design idea.

摘要

盘式扭矩传感器广泛应用于机器人关节和轮式驱动中。然而，在传统的辐条式几何形状中，灵敏度和刚度之间总是存在权衡，因为它们的应变暴露取决于弯曲变形模式，这会导致应变不均匀。本文提出了一种杠杆式应变暴露方法，采用单轴拉伸和压缩变形模式来优化应变均匀性并改善这种权衡。此外，基于这种方法，所提出的盘式 F 形扭矩传感器具有轴向薄型、应变片易于安装和灵活定制的特点。仿真和实验结果验证了基本设计思想。