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A Lever-Type Method of Strain Exposure for Disk F-Shaped Torque Sensor Design
Ran Shu1,2, Zhigang Chu1,2, Hongyu Shu1,2
1State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, China.
Sensors (Basel, Switzerland)
|January 23, 2020
Summary
This study introduces a novel lever-type torque sensor design that overcomes the sensitivity-stiffness trade-off in conventional sensors. The F-shaped sensor offers improved strain uniformity for robotic joints and wheel drives.
Area of Science:
- Mechanical Engineering
- Robotics
- Sensor Technology
Background:
- Conventional disk-shaped torque sensors for robotic joints and wheel drives face a sensitivity-stiffness trade-off.
- This limitation stems from bending deformation modes causing strain non-uniformity in spoke-type geometries.
Purpose of the Study:
- To present a novel lever-type strain exposure method for disk-shaped torque sensors.
- To optimize strain uniformity and overcome the sensitivity-stiffness trade-off inherent in conventional designs.
Main Methods:
- Developed a lever-type strain exposure method utilizing uniaxial tension and compression deformation.
- Designed a disk F-shaped torque sensor based on this lever principle.
- Conducted simulations and experiments to validate the design.
Main Results:
- The lever-type method achieves optimized strain uniformity.
- The proposed F-shaped torque sensor demonstrates axial thinness and facilitates easy strain gauge installation.
- Simulation and experimental results confirm the effectiveness of the design approach.
Conclusions:
- The lever-type strain exposure method successfully addresses the sensitivity-stiffness trade-off in disk-shaped torque sensors.
- The F-shaped torque sensor design offers practical advantages including thinness and ease of customization.
- This innovative design holds promise for enhanced performance in robotic and automotive applications.
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