生物曲線からソフトモジュラーロボットへ:不確実性誘導型改良を伴う学習ベース逆設計
From Biological Curves to Soft Modular Robots: Learning-Based Inverse Design with Uncertainty-Guided Refinement
生物の曲線形状をケーブル駆動ソフトモジュラーロボットの構成へ変換するため、学習ベースの順・逆モデルと不確実性に基づく候補探索を組み合わせた逆設計フレームワークを提案し、設計時間を大幅短縮しつつ高い形状再現成功率を達成した。
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著者: Dixiang Wang, Minghao Zha, Arifur Rahman, Yinhong Qin, Yitao Jiang, Shiyang Lu, Zebing Mao, Muhao Chen, Luyang Zhao
分類: cs.RO, cs.LG
原文アブストラクト
Animals exhibit diverse shape-changing behaviors, from the undulatory swimming of eels to the arching movements of inchworms. Reproducing these biological shapes with modular soft robots offers a promising approach to developing versatile bioinspired robotic systems. However, translating a desired shape into a feasible robotic configuration remains challenging. Existing cable-driven modular soft robots rely on computationally expensive physics-based modeling and combinatorial search for inverse design, making it difficult to efficiently reproduce diverse target shapes. To address this challenge, we present a learning-based real-to-sim-to-real framework that translates biological curves into robotic configurations through surrogate-assisted inverse design and uncertainty-guided refinement. The proposed method combines learned inverse prediction with targeted candidate exploration, using a fast forward surrogate to evaluate and select suitable designs. The learned forward surrogate reduces deformation prediction time from $1.53 \times 10^5$ ms to 0.0008 ms, achieving approximately a $1.9 \times 10^8$-fold speedup. At the same time, the proposed inverse design method reduces design time from $1.99 \times 10^6$ ms to 4.18 ms. On 5,000 test samples generated from previously unseen threading patterns, the method achieves a 93% shape reconstruction success rate under surrogate-based evaluation. Physical demonstrations with four bioinspired robots further illustrate the translation of biological curves into realizable robotic shapes.
関連論文
- 力学支援機械学習によるスナップ跳躍ロボットの逆設計ソフトロボティクス/逆設計