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A Soft Tube-Climbing Robot.

Mohit S Verma1, Alar Ainla1, Dian Yang1,2

  • 11 Department of Chemistry and Chemical Biology, Harvard University , Cambridge, Massachusetts.

Soft Robotics
|December 1, 2017
PubMed
Summary
This summary is machine-generated.

This study presents a soft robot using pneumatic actuators to climb inside tubes, even clearing heavy obstacles. Its soft, lightweight design enables safe human collaboration and delicate environment interaction.

Keywords:
bucklingelastomerlocomotionmusclepneumaticvacuum

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Area of Science:

  • Robotics
  • Soft Robotics
  • Biomimetics

Background:

  • Soft robots offer advantages in safety and adaptability for complex environments.
  • Pneumatic actuation is a common method for powering soft robotic systems.
  • Navigating confined spaces like tubes presents unique challenges for robotic systems.

Purpose of the Study:

  • To demonstrate a soft robot capable of autonomous navigation within tubular structures.
  • To develop a soft robot that can perform obstacle clearing functions inside tubes.
  • To evaluate the robot's performance in various conditions, including wet and submerged environments.

Main Methods:

  • Fabrication of a soft robot using buckling pneumatic actuators, specifically vacuum-actuated muscle-inspired pneumatic structures (VAMPs).
  • Testing the robot's ability to navigate through tubes with varying geometries, including turns, inclines, and diameter changes.
  • Assessing the robot's obstacle removal capabilities, including lifting objects significantly heavier than itself.
  • Evaluating performance in both dry and wet conditions, as well as underwater.

Main Results:

  • The soft robot successfully navigated complex tubular pathways.
  • The robot demonstrated the ability to clear obstacles exceeding 10 times its own weight.
  • Consistent climbing and clearing performance was observed in wet and underwater conditions.
  • The robot's soft and lightweight nature was confirmed.

Conclusions:

  • Pneumatically actuated soft robots, utilizing VAMPs, are effective for tube navigation and obstacle removal.
  • The developed soft robot exhibits robust performance in challenging and wet environments.
  • The inherent safety features of this soft robot make it suitable for human-robot collaboration and delicate tasks.