Hall, M.D., Özdemir, A. and Groß, R. orcid.org/0000-0003-1826-1375 (2020) Self-reconfiguration in two-dimensions via active subtraction with modular robots. In: Robotics: Science and System XVI. Robotics: Science and Systems XVI (RSS 2020), 12-16 Jul 2020, Online conference. RSS Foundation
Abstract
Modular robotic systems comprise groups of physically connected modules which can be reconfigured to create morphologies that suit an environment or task. One method of reconfiguration is via subtraction, where extraneous modules disconnect from an initial configuration, before being removed by external intervention. In this paper, we consider an approach to reconfiguration in two dimensions, here termed active subtraction, in which unwanted modules traverse a configuration in order to remove themselves safely, without the need for external intervention, making it a form of self-reconfiguration. We present a sequential solution that selects suitable extraneous modules that then remove themselves, one by one. We also present a parallel solution that, while being more computationally demanding, allows multiple modules to move simultaneously. Both solutions are proven to (i) be correct for any given non-hollow structure, and (ii) require, in the worst case, quadratic time proportionally to the number of modules. Simulation studies demonstrate that both solutions work effectively for specified and randomly generated desired configurations with hundreds of modules, and reveal a non-monotonic dependence between the performance and the percentage of modules to be removed. This work demonstrates active subtraction as a viable method of self-reconfiguration, without the need for heuristics or stochasticity, and suggests its potential for application in real-world systems.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 The Authors. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Automatic Control and Systems Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 15 Jun 2020 08:35 |
Last Modified: | 19 Jan 2022 16:50 |
Published Version: | http://roboticsproceedings.org/rss16/p014.html |
Status: | Published |
Publisher: | RSS Foundation |
Refereed: | Yes |
Identification Number: | 10.15607/RSS.2020.XVI.014 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:161848 |