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このアイテムの引用には次の識別子を使用してください: http://hdl.handle.net/10445/4411

タイトル: A modular robot driven by protoplasmic streaming
著者: Umedachi, T.
Kitamura, T.
Nakagaki, Toshiyuki
Kobayashi, R.
Ishiguro, A.
Asama, H. et al.
アブストラクト: Self-reconfigurable robots are expected to exhibit various interesting abilities, such as adaptivity and fault tolerance. These remarkable abilities originate from the fact that their mechanical systems intrinsically possess very large degrees of freedom. This, however, causes a serious problem, i.e., controllability. To overcome this, autonomous decentralized control is expected to play a crucial role, as widely observed in living organisms. However, much is still not understood about how such decentralized control can be achieved. This is mainly because the logic connecting local behaviors to global behaviors is still not understood. In this study, we particularly focus on a very primitive living organism, slime mold (physarum polycepharum), since it is believed to employ a fully decentralized control based on coupled biochemical oscillators. We modeled  a decentralized control algorithm based on coupled nonlinear oscillators and then implementthis into a two-dimensional modular robot consisting of incompressive fluid (i.e., protoplasm) covered with an outer skin composed of a network of passive and real-time tunable springs. Preliminary simulation results showed that this modular robot exhibits significantly supple locomotion similar to amoeboid locomotion and that the exploitation of the “long-distant interaction” stemming from “the law of conservation of protoplasmic mass” performs some of the “computation” that the controller would otherwise have to carry out. As a consequence, adaptive amoeboid locomotion emerges without the need for any centralized control system. The results obtained are also expected to shed new light on how control and mechanical systems with large degrees of freedom should be coupled.
研究業績種別: アカデミックな活動/Academic Activity
資料種別: Article
査読有無: なし/no
単著共著: 共著/joint
発表雑誌名,発表学会名など: DISTRIBUTED AUTONOMOUS ROBOTIC SYSTEMS
巻: 8
開始ページ: 193
終了ページ: 202
年月日: 2009年
出版社: Springer-Verlag
出現コレクション:中垣 俊之

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