磁気駆動運動量駆動型ミリロボット
Min Wang1,2,3, Wenlong Wu3,4, Zeju Zheng3,5
1Department of Data and Systems Engineering, The University of Hong Kong, Hong Kong SAR, China.
Nature communications
|December 27, 2025
まとめ
本研究では、高摩擦環境を克服できる磁気内部駆動型ミリロボットを発表します。これにより、困難な条件下での移動と貨物輸送のための高い推力を実現します。
科学分野:
- ロボティクス
- 材料科学
- 物理学
背景:
- ミリロボットを高摩擦環境向けに設計することは、小規模での力の出力制限と非効率的な伝達機構のために困難です。
- 既存のミリロボットの設計は、大きな摩擦抵抗を克服するのに十分な力を生成するのに苦労しています。
研究 の 目的:
- 高摩擦地形のナビゲーションのための高推力を生成できる、新しい磁気内部駆動型ミリロボットを導入すること。
- 多様な環境での摩擦克服と重い荷物の輸送におけるミリロボットの能力を実証すること。
主な方法:
- デュアルコイルアレイと中央永久磁石を備えた内部駆動型ミリロボットを開発しました。
- 磁気相互作用を利用して磁石を推進させ、衝撃による瞬間的な推力を生成しました。
- 運動量保存の原理を推進に活用しました。
主要な成果:
- ミリロボットは、体重5.82 gで15 Nを超える推力を発生させます。
- 0.5 Aの電流で17 ms以内に2.10 m/sの磁石速度を達成しました。
- 粘性油中での作動、砂や粒状媒体の横断、および自重の300倍を超える貨物の輸送に成功しました。
結論:
- 磁気内部駆動型ミリロボットの設計は、高摩擦および閉鎖空間用途向けの大きな力容量を提供します。
- この推進方法は、困難な環境における従来のミリロボットの限界を克服します。
- 閉鎖された管状環境へのアクセスと堅牢な貨物輸送の可能性を示しました。
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