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Development of a Novel Task-oriented Rehabilitation Program using a Bimanual Exoskeleton Robotic Hand
Published on: May 20, 2020
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Performance characterization of a novel semi-active exoskeleton for overhead work
Jonas Schiebl1, Christophe Maufroy1,2, Nils Ziegenspeck1,2
1Fraunhofer Institute for Manufacturing Engineering and Automation IPA, Stuttgart, Germany.
Wearable Technologies
|September 19, 2025
Summary
This study introduces a novel semi-active shoulder exoskeleton. It offers adjustable, high-performance support for strenuous work with low energy consumption and a lightweight design.
Area of Science:
- Ergonomics and Human Factors
- Robotics and Biomechanics
Background:
- Passive exoskeletons have limitations in adaptability and support.
- Active and semi-active systems are often heavy or underdeveloped.
- Overhead work poses significant ergonomic challenges for workers.
Purpose of the Study:
- To develop a lightweight, semi-active shoulder exoskeleton.
- To incorporate a novel motorized torque adjustment mechanism.
- To enhance worker support during strenuous overhead tasks.
Main Methods:
- Designed a semi-active exoskeleton with a motorized lever arm adjustment mechanism.
- Integrated motors on the user's back actuated via Bowden cables.
- Experimentally characterized dynamic support torque, adjustment times, and energy consumption.
Main Results:
- Achieved plateau-like support torque profiles up to 12 Nm per arm.
- Demonstrated rapid adjustment times (0.5s to 1.0s).
- Showcased low energy consumption (0.1 As to 1.9 As) for extended operation.
Conclusions:
- The developed exoskeleton offers high performance, rapid adjustment, and low energy use.
- The lightweight design is suitable for prolonged use in demanding occupational settings.
- This innovation advances wearable robotic solutions for shoulder support.
