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Bio-inspired magnetic-driven folded diaphragm for biomimetic robot
Dezhao Lin1, Fan Yang2, Di Gong1,3
1Research Center for Intelligent Materials and Structures (CIMS), College of Mechanical Engineering and Automation, Huaqiao University, Xiamen, Fujian, P.R. China.
Nature Communications
|January 11, 2023
Summary
This study introduces a novel magnetic-driven folded diaphragm for soft robots, inspired by earthworm locomotion. This technology enables large 3D deformation and volume changes for biomimetic robots.
Area of Science:
- Materials Science
- Robotics
- Biomimetics
Background:
- Soft materials with multi-deformation capabilities are crucial for developing advanced soft robots capable of complex biomimetic behaviors.
- Earthworm locomotion, characterized by segment-specific contraction and stretching, provides a model for achieving controlled movement in soft robotic systems.
Purpose of the Study:
- To propose and demonstrate a novel one-piece-mold folded diaphragm with radial magnetization for large 3D and bi-directional deformation.
- To enable untethered soft robotic systems to achieve customized appearances and functionalities as soft drivers.
- To develop a magnetic-driven diaphragm pump and soft robots exhibiting efficient locomotion.
Main Methods:
- Fabrication of a one-piece-mold folded diaphragm with radial magnetization properties.
- Application of a low homogeneous magnetic driving field (40 mT) to induce large deformation and volume change.
- Design and testing of a diaphragm pump and soft robots (bio-earthworm crawling robot, squid-inspired swimming robot).
Main Results:
- The proposed magnetic-driven folded diaphragm achieved large 3D and bi-directional deformation with internal volume change under a low magnetic field.
- The custom-designed diaphragm served as an effective soft driver for untethered soft robotic systems.
- The developed diaphragm pump demonstrated lightweight design, powerful output, and rapid response.
- The bio-earthworm and squid-inspired robots exhibited flexible and rapid locomotion controlled by a single homogeneous magnetic field.
Conclusions:
- The novel magnetic-driven folded diaphragm offers a versatile platform for creating customized soft drivers in soft robotics.
- This technology enables efficient and biomimetic locomotion in untethered soft robots using a simple magnetic field.
- The developed system holds potential for applications requiring lightweight, powerful, and responsive soft robotic actuators.
