Architectures of soft robotic locomotion enabled by simple mechanical principles

Area of Science:

• Robotics
• Bio-inspired Engineering
• Mechanical Engineering

Background:

• Nature exhibits diverse limbless locomotion across various organisms.
• Bio-inspired soft robots have been developed using locomotion principles.
• Existing designs often focus on specific locomotion modes.

Purpose of the Study:

• To propose innovative soft mobile robot designs based on worm-like crawling and snake-like slithering.
• To develop a broad set of robotic locomotion patterns using simple mechanical principles.
• To explore 1D, 2D, and 3D locomotion capabilities through continuous beam actuation.

Main Methods:

• Analysis of kinematics and dynamics of worm-like crawling and snake-like slithering.
• Application of simple mechanical principles for novel robot designs.
• Integration of diverse locomotion strategies into a simple beam model.

Main Results:

• Over 20 distinct locomotion modes were developed, including crawling, slithering, swimming, and jumping.
• Robots demonstrated high speed, efficiency, and obstacle-overcoming capabilities.
• Locomotion strategies were integrated into a simple, robust beam model.

Conclusions:

• The proposed simple and robust models are adaptive for severe and complex environments.
• These designs offer versatile robotic locomotion patterns inspired by and exceeding biological systems.
• The study is expected to underpin future soft robot deployments and inspire advanced designs.