Soft Robotic Fish Combines High-Speed Swimming with 3D Maneuverability
Soft robotic fish combines high-speed swimming with 3D maneuverability
Researchers from the Shenyang Institute of Automation have developed a soft robotic fish that can swim at high speeds and perform agile three-dimensional maneuvers. The design integrates a rigid–flexible coupled propulsion system with dynamic buoyancy regulation, inspired by biological mechanisms such as muscle-skeleton coordination and swim bladder function. The robotic fish achieves a maximum speed of 2.13 body lengths per second and can perform complex 3D movements like turning, ascending, and spiral ascent, offering a potential approach for high-performance underwater robots.
Source: Tech Xplore — Robotics · Read original article ↗
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What the source reports
Publisher-reported claims, with original evidence. These results have not been independently verified by RoboSignal.
Reported numbers
maximum swimming speed
2.13
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tor with two degrees of freedom. Local rigid constraints reduce undesired deformation during actuation. Alternating movements of the two driving units mimic antagonistic muscle contractions, generating high-frequency tail oscillations. Experimental results demonstrated that the robotic fish can swim at a maximum speed of 2.13 body lengths per second (approximately 26 cm/s (10 inches per second)) with a minimum transp
Open source S5body lengths per second
2.13
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tor with two degrees of freedom. Local rigid constraints reduce undesired deformation during actuation. Alternating movements of the two driving units mimic antagonistic muscle contractions, generating high-frequency tail oscillations. Experimental results demonstrated that the robotic fish can swim at a maximum speed of 2.13 body lengths per second (approximately 26 cm/s (10 inches per second)) with a minimum transp
Open source S5cm per second
≈26
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tor with two degrees of freedom. Local rigid constraints reduce undesired deformation during actuation. Alternating movements of the two driving units mimic antagonistic muscle contractions, generating high-frequency tail oscillations. Experimental results demonstrated that the robotic fish can swim at a maximum speed of 2.13 body lengths per second (approximately 26 cm/s (10 inches per second)) with a minimum transp
Open source S5inches per second
10
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tor with two degrees of freedom. Local rigid constraints reduce undesired deformation during actuation. Alternating movements of the two driving units mimic antagonistic muscle contractions, generating high-frequency tail oscillations. Experimental results demonstrated that the robotic fish can swim at a maximum speed of 2.13 body lengths per second (approximately 26 cm/s (10 inches per second)) with a minimum transp
Open source S5degrees of posture adjustment minimum
20
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ort cost of 9.4 J/(kg·m). This sets a new speed record for soft robotic fish using body-caudal-fin (BCF) propulsion. To enable active control of the robot's orientation, the researchers developed a biomimetic swim bladder that operates through a liquid-to-gas phase transition. By regulating the local buoyancy of the robotic fish, the system generates a pitching moment and enables posture adjustment from −20° to 58°.
Open source S6
- paper: not_reported
- code: not_reported
- weights: not_reported
- dataset: not_reported
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Automatically extracted; no manual editorial approval recorded.
tor with two degrees of freedom. Local rigid constraints reduce undesired deformation during actuation. Alternating movements of the two driving units mimic antagonistic muscle contractions, generating high-frequency tail oscillations. Experimental results demonstrated that the robotic fish can swim at a maximum speed of 2.13 body lengths per second (approximately 26 cm/s (10 inches per second)) with a minimum transp
Open source S5
ort cost of 9.4 J/(kg·m). This sets a new speed record for soft robotic fish using body-caudal-fin (BCF) propulsion. To enable active control of the robot's orientation, the researchers developed a biomimetic swim bladder that operates through a liquid-to-gas phase transition. By regulating the local buoyancy of the robotic fish, the system generates a pitching moment and enables posture adjustment from −20° to 58°.
Open source S6
Source：Tech Xplore — Robotics · techxplore.com