A Crawling and Rolling Soft Robot With an Interlocking Design

In recent years, the field of soft robotics has gained considerable attention, due to the high versatility of soft robots in adapting their flexible bodies to unknown environments, resulting in the development of a wide range of robots. Inspired by the morphology and locomotion mechanisms of inchwor...

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Main Authors: K. Bezha, K. Ito
Format: Article
Language:English
Published: IEEE 2025-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/10990214/
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author K. Bezha
K. Ito
author_facet K. Bezha
K. Ito
author_sort K. Bezha
collection DOAJ
description In recent years, the field of soft robotics has gained considerable attention, due to the high versatility of soft robots in adapting their flexible bodies to unknown environments, resulting in the development of a wide range of robots. Inspired by the morphology and locomotion mechanisms of inchworms and earthworms, various worm-like soft robots have been proposed, typically utilizing a single mode of locomotion such as crawling. In this paper, a worm-like pneumatic soft robot with an interlocking design that realizes bidirectional rolling on flat surfaces and bidirectional crawling on flat platforms and within a pipe, is presented. The crawling locomotion is inspired by the two-anchor crawling observed in biological species, where the animal alternately anchors its rear and front ends as its body elongates or shrinks. The robot consists of two multi-chamber radial actuators encapsulated in plastic cage frames and an axial actuator housed between the interlocking parts. The inflation of one of the radial actuators results in anchorage of the robot on that side, allowing the body to move when the central axial actuator is engaged. Sequential actuation of the individual chambers, near the dead ends on both sides, allows the robot to roll. A prototype of the robot was developed and tested. The results confirmed the robot’s ability to crawl bidirectionally at approximately 16 cm/min on flat surfaces, 15 cm/min inside pipes, and roll up to 40 cm/min on flat surfaces. The transition between these modes was achieved through usage of different patterns, without any hardware modifications.
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spelling doaj-art-5f44aefc57134b509b784c16c2ba17f22025-08-20T02:31:00ZengIEEEIEEE Access2169-35362025-01-0113821608216910.1109/ACCESS.2025.356781310990214A Crawling and Rolling Soft Robot With an Interlocking DesignK. Bezha0https://orcid.org/0009-0004-6216-0998K. Ito1https://orcid.org/0000-0002-9755-3562Graduate School of Science and Technology, Institute of Integrated Science and Technology (IIST), Hosei University, Koganei, JapanGraduate School of Science and Technology, Institute of Integrated Science and Technology (IIST), Hosei University, Koganei, JapanIn recent years, the field of soft robotics has gained considerable attention, due to the high versatility of soft robots in adapting their flexible bodies to unknown environments, resulting in the development of a wide range of robots. Inspired by the morphology and locomotion mechanisms of inchworms and earthworms, various worm-like soft robots have been proposed, typically utilizing a single mode of locomotion such as crawling. In this paper, a worm-like pneumatic soft robot with an interlocking design that realizes bidirectional rolling on flat surfaces and bidirectional crawling on flat platforms and within a pipe, is presented. The crawling locomotion is inspired by the two-anchor crawling observed in biological species, where the animal alternately anchors its rear and front ends as its body elongates or shrinks. The robot consists of two multi-chamber radial actuators encapsulated in plastic cage frames and an axial actuator housed between the interlocking parts. The inflation of one of the radial actuators results in anchorage of the robot on that side, allowing the body to move when the central axial actuator is engaged. Sequential actuation of the individual chambers, near the dead ends on both sides, allows the robot to roll. A prototype of the robot was developed and tested. The results confirmed the robot’s ability to crawl bidirectionally at approximately 16 cm/min on flat surfaces, 15 cm/min inside pipes, and roll up to 40 cm/min on flat surfaces. The transition between these modes was achieved through usage of different patterns, without any hardware modifications.https://ieeexplore.ieee.org/document/10990214/Bidirectional locomotionbio-inspired robotcrawlingpipe inspection robotrollingsoft robots
spellingShingle K. Bezha
K. Ito
A Crawling and Rolling Soft Robot With an Interlocking Design
IEEE Access
Bidirectional locomotion
bio-inspired robot
crawling
pipe inspection robot
rolling
soft robots
title A Crawling and Rolling Soft Robot With an Interlocking Design
title_full A Crawling and Rolling Soft Robot With an Interlocking Design
title_fullStr A Crawling and Rolling Soft Robot With an Interlocking Design
title_full_unstemmed A Crawling and Rolling Soft Robot With an Interlocking Design
title_short A Crawling and Rolling Soft Robot With an Interlocking Design
title_sort crawling and rolling soft robot with an interlocking design
topic Bidirectional locomotion
bio-inspired robot
crawling
pipe inspection robot
rolling
soft robots
url https://ieeexplore.ieee.org/document/10990214/
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AT kito acrawlingandrollingsoftrobotwithaninterlockingdesign
AT kbezha crawlingandrollingsoftrobotwithaninterlockingdesign
AT kito crawlingandrollingsoftrobotwithaninterlockingdesign