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Miniature Amphibious Robot Actuated by Rigid-Flexible Hybrid Vibration Modules.

Dehong Wang1, Yingxiang Liu1, Jie Deng1

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Summary
This summary is machine-generated.

A new miniature amphibious robot uses vibration-driven locomotion for fast movement on land and water. This compact robot avoids complex mechanisms, making it ideal for confined amphibious environments.

Keywords:
amphibious robotfriction locomotionrigid-flexible hybrid modulevibration-induced flow

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Area of Science:

  • Robotics
  • Mechanical Engineering
  • Fluid Dynamics

Background:

  • Amphibious robots offer versatile environmental compatibility for diverse tasks.
  • Existing designs often suffer from complex, bulky structures due to multi-locomotion systems and transmission mechanisms.

Purpose of the Study:

  • To develop a miniature amphibious robot with a simplified locomotion mechanism.
  • To achieve untethered, high-speed movement in both terrestrial and aquatic environments.

Main Methods:

  • A novel vibration-driven locomotion mechanism was designed using unique rigid-flexible hybrid modules (RFH-modules).
  • Each RFH-module integrates a soft foot for friction-based ground locomotion and a flexible fin for vibration-induced flow-based swimming.
  • The robot operates untethered, powered by an eccentric motor generating vibrations.

Main Results:

  • The robot achieved a compact size (75 × 95 × 21 mm³) and light weight (35 g) due to the absence of transmission mechanisms and joints.
  • Maximum speeds recorded were 815 mm/s on ground and 171 mm/s on water.
  • The vibration-driven locomotion enabled efficient movement across different environments.

Conclusions:

  • The developed miniature amphibious robot demonstrates a simplified, compact structure and high-speed locomotion capabilities.
  • The RFH-modules and vibration-driven mechanism offer significant advantages for applications in constrained amphibious settings.