A wearable textile-based pneumatic energy harvesting system for assistive robotics

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Wearable assistive, rehabilitative, and augmentative devices currently require bulky power supplies, often making these tools more of a burden than an asset. This work introduces a soft, low-profile, textile-based pneumatic energy harvesting system that extracts power directly from the foot strike of a user during walking. Energy is harvested with a textile pump integrated into the insole of the user’s shoe and stored in a wearable textile bladder to operate pneumatic actuators on demand, with system performance optimized based on a mechano-fluidic model. The system recovered a maximum average power of nearly 3 W with over 20% conversion efficiency—outperforming electromagnetic, piezoelectric, and triboelectric alternatives—and was used to power a wearable arm-lift device that assists shoulder motion and a supernumerary robotic arm, demonstrating its capability as a lightweight, low-cost, and comfortable solution to support adults with upper body functional limitations in activities of daily living.

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Shveda, Rachel A., Rajappan, Anoop, Yap, Te Faye, et al.. "A wearable textile-based pneumatic energy harvesting system for assistive robotics." Science Advances, 8, no. 34 (2022) AAAS: https://doi.org/10.1126/sciadv.abo2418.

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