自然言語によるキノダイナミクスモデリングでロボットの構造損傷にゼロショット適応
Zero-Shot Adaptation to Robot Structural Damage via Natural Language-Informed Kinodynamics Modeling
自然言語で記述された損傷情報を自己教師あり学習でキノダイナミクス挙動に結びつけ、損傷を受けたロボットの順モデルを学習。シミュレータで最大81%の誤差削減を達成し、sim-to-realやスケール間の汎化も示した。
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著者: Anuj Pokhrel, Aniket Datar, Mohammad Nazeri, Francesco Cancelliere, Xuesu Xiao
分類: cs.RO
原文アブストラクト
High-performance autonomous mobile robots endure significant mechanical stress during in-the-wild operations, e.g., driving at high speeds or over rugged terrain. Although these platforms are engineered to withstand such conditions, mechanical degradation is inevitable. Structural damage manifests as consistent and notable changes in kinodynamic behavior compared to a healthy vehicle. Given the heterogeneous nature of structural failures, quantifying various damages to inform kinodynamics is challenging. We posit that natural language can describe and thus capture this variety of damages. Therefore, we propose Zero-shot Language Informed Kinodynamics (ZLIK), which employs self-supervised learning to ground semantic information of damage descriptions in kinodynamic behaviors to learn a forward kinodynamics model in a data-driven manner. Using the high-fidelity soft-body physics simulator BeamNG.tech, we collect data from a variety of structurally compromised vehicles. Our learned model achieves zero-shot adaptation to different damages with up to 81% reduction in kinodynamics error and generalizes across the sim-to-real and full-to-1/10$^{\text{th}}$ scale gaps.
