FlexWorm: 吸着式多セグメント変形ロボットのためのプリミティブ拡張ハイブリッド接触・動作計画
FlexWorm: Primitive-augmented Hybrid Contact-motion Planning for Suction-based Multi-segment Deformable Robots
多セグメントの吸着式ソフトロボットが複雑な3D表面を移動するための計画フレームワークを提案し、離散的な吸着切替と連続的な変形を扱い、学習ベースのプリミティブ検索で計画時間を短縮する。
詳しい要約
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2. 先行研究と比べてどこがすごい?
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著者: Zili Tang, Tiecheng Guo, Qinyue Zhang, Meng Guo
分類: cs.RO
原文アブストラクト
Multi-segment suction-based soft robots are promising for inspection and maintenance in confined or fragile environments, but existing approaches still depend heavily on manually designed gaits and environment-specific motion scripts. This work presents a planning framework for serial multi-segment soft robots with deformable body segments and boundary suction pads. The formulation targets full 3D navigation on complex surfaces and explicitly handles discrete adhesion switching and continuous body deformation under geometric, collision, and quasi-static feasibility constraints, while remaining agnostic to the specific actuation realization used to produce segment deformation. Its core, block-wise IK hybrid search (IKHS), performs best-first search over feasible adhesion transitions while solving inverse kinematics only on induced free blocks. On top of IKHS, primitive-augmented hybrid search (PaHS) uses a learned observation--primitive embedding to retrieve short validated motion segments for fast local proposal, with fallback to standard IKHS branching when retrieval fails. In simulation, the framework consistently outperforms controlled baselines in planning success, transition quality, and efficiency across diverse terrains. PaHS matches IKHS in success rate while substantially reducing planning time. Repeated hardware experiments on a pneumatic multi-segment soft robot further demonstrate executability and online recovery under actuation and adhesion uncertainty.