A resonant squid-inspired robot unlocks biological propulsive efficiency.
Journal
Science robotics
ISSN: 2470-9476
Titre abrégé: Sci Robot
Pays: United States
ID NLM: 101733136
Informations de publication
Date de publication:
20 01 2021
20 01 2021
Historique:
received:
12
06
2020
accepted:
23
12
2020
entrez:
27
5
2021
pubmed:
28
5
2021
medline:
15
12
2021
Statut:
ppublish
Résumé
Elasticity has been linked to the remarkable propulsive efficiency of pulse-jet animals such as the squid and jellyfish, but reports that quantify the underlying dynamics or demonstrate its application in robotic systems are rare. This work identifies the pulse-jet propulsion mode used by these animals as a coupled mass-spring-mass oscillator, enabling the design of a flexible self-propelled robot. We use this system to experimentally demonstrate that resonance greatly benefits pulse-jet swimming speed and efficiency, and the robot's optimal cost of transport is found to match that of the most efficient biological swimmers in nature, such as the jellyfish
Identifiants
pubmed: 34043579
pii: 6/50/eabd2971
doi: 10.1126/scirobotics.abd2971
pii:
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Commentaires et corrections
Type : CommentIn
Informations de copyright
Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.