Design and Validation of Soft Sliding Structure with Adjustable Stiffness for Ankle Sprain Prevention

This study presents the design and validation of a soft sliding stiffness structure with a soft-rigid layer sliding mechanism. It aims to mitigate ankle sprains and address the progression of chronic ankle instability by providing stiffness support. The soft-rigid layer sliding mechanism of the stru...

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Veröffentlicht in:IEEE robotics and automation letters Jg. 9; H. 2; S. 1 - 8
Hauptverfasser: Ham, Seoyeon, Paing, Soe Lin, Kang, Brian Byunghyun, Lee, Hyunglae, Kim, Wansoo
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States IEEE 01.02.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Alignment
Analytical models
Ankle
Force
Form factors
Human subjects
Injuries
Jamming
Mathematical models
Programmable logic arrays
Skin
Sliding
soft robot applications
Soft sensors and actuators
Stiffness
Testing
wearable robotics
soft robot applications
wearable robotics
Soft sensors and actuators
ISSN:2377-3766, 2377-3766
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Zusammenfassung:This study presents the design and validation of a soft sliding stiffness structure with a soft-rigid layer sliding mechanism. It aims to mitigate ankle sprains and address the progression of chronic ankle instability by providing stiffness support. The soft-rigid layer sliding mechanism of the structure is designed to achieve a wide range of stiffness while maintaining a compact form factor. The structure incorporates rigid retainer pieces within each layer, which allows for sliding within a hollow cuboid structure and enables modulation of stiffness. An analytical model is presented to investigate the variations in stiffness resulting from the different sliding states. The stiffness characteristics of the structure were validated through both bench tests and human subject tests. The gradual sliding of the structure's layer resulted in an increase in stiffness, aligning with the analytical model's predictions. At the most rigid stage (0% alignment), the stiffness exhibited a significant increase of 111.1% compared to the most flexible stage (100% alignment). Additionally, the human subject testing demonstrated a stiffness increase of up to 93.8%. These results underscore the potential applicability of the soft sliding structure in ankle support applications.
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ISSN:2377-3766
2377-3766
DOI:10.1109/LRA.2023.3338878