Continuum Robotic Caterpillar with Wirelessly Powered Shape Memory Alloy Actuators

Colm McCaffrey, Takuya Umedachi*, Weiwei Jiang, Takuya Sasatani, Yoshiaki Narusue, Ryuma Niiyama, Yoshihiro Kawahara

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    33 Citations (Scopus)

    Abstract

    Wireless power transfer (WPT) has the significant potential for soft-bodied continuum robots to extend the operational time limitlessly and reduce weight. However, rigid power receiver coils, widely used in WPT, hinder the continuum deformation of the robot, and as a result, the function realization using the continuum deformation (e.g., locomotion) is impaired. Therefore, this article introduces that a soft-bodied continuum robot can be designed by using thin film receiver coils and an inductively coupled wireless powering solution without sacrificing the continuum deformation and locomotion ability. A system is described for powering and controlling a soft robotic caterpillar consisting of nothing more than its continuum structure, actuators, and thin/flexible power receiving coils.

    Original languageEnglish
    Pages (from-to)700-710
    JournalSoft Robotics
    Volume7
    Issue number6
    Early online date30 Mar 2020
    DOIs
    Publication statusPublished - Dec 2020
    MoE publication typeA1 Journal article-refereed

    Funding

    This work was supported by JST ERATO grant no. JPMJER1501, Japan, and KAKENHI Grant-in-Aid for Scientific Research on Innovative Areas “Science of Soft Robot” project funded by JSPS under grant no. 18H05467. In addition, this work was funded by the EU ERASMUS Mundus TEAM Exchange program.

    Keywords

    • wireless power transfer (WPT)
    • soft-bodied robotics
    • autonomous mobile robot
    • shape memory alloy (SMA) coil

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