Journal
IEEE ROBOTICS AND AUTOMATION LETTERS
Volume 5, Issue 4, Pages 5502-5509Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LRA.2020.3007411
Keywords
In-hand manipulation; soft robot applications; dexterous manipulation
Categories
Funding
- Wyss Institute for Biologically Inspired Engineering
- National Science Foundation [EFMA-1830901]
- National Science Foundation Graduate Research Fellowship [DGE1745303]
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In this letter, we show that soft robotic hands provide a robust means of performing basic primitives of in-hand manipulation in the presence of uncertainty. We first discuss the design of a prototype hand with dexterous soft fingers capable of moving objects within the hand using several basic motion primitives. We then empirically validate the ability of the hand to perform the desired object motion primitives while still maintaining strong grasping capabilities. Based on these primitives, we examine a simple, heuristic finger gait which enables continuous object rotation for a wide variety of object shapes and sizes. Finally, we demonstrate the utility of our dexterous soft robotic hand in three real-world cases: unscrewing the cap of a jar, orienting food items for packaging, and gravity compensation during grasping. Overall, we show that even for complex tasks such as in-hand manipulation, soft robots can perform robustly without the need for local sensing or complex control.
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