VertiAdaptor: 垂直障害地形のためのオンライン運動力学適応
VertiAdaptor: Online Kinodynamics Adaptation for Vertically Challenging Terrain
オフロード環境での自動運転向けに、標高と意味的埋め込みを統合し、関数エンコーダを用いて地形認識型の運動力学モデルと計画を実現するオンライン適応フレームワークを提案。学習済み空間での最小二乗計算により未知環境へ高速適応し、予測精度と適応時間を改善。
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著者: Tong Xu, Chenhui Pan, Aniket Datar, Xuesu Xiao
分類: cs.RO
原文アブストラクト
Autonomous driving in off-road environments presents significant challenges due to the dynamic and unpredictable nature of unstructured terrain. Traditional kinodynamic models often struggle to generalize across diverse geometric and semantic terrain types, underscoring the need for real-time adaptation to ensure safe and reliable navigation. We propose VertiAdaptor (VA), a novel online adaptation framework that efficiently integrates elevation with semantic embeddings to enable terrain-aware kinodynamic modeling and planning via function encoders. VA learns a kinodynamic space spanned by a set of neural ordinary differential equation basis functions, capturing complex vehicle-terrain interactions across varied environments. After offline training, the proposed approach can rapidly adapt to new, unseen environments by identifying kinodynamics in the learned space through a computationally efficient least-squares calculation. We evaluate VA within the Verti-Bench simulator, built on the Chrono multi-physics engine, and validate its performance both in simulation and on a physical Verti-4-Wheeler platform. Our results demonstrate that VA improves prediction accuracy by up to 23.9% and achieves a 5X faster adaptation time, advancing the robustness and reliability of autonomous robots in complex and evolving off-road environments.
