H-SPAR: 粒子輸送と自律ロボットのための流体力学を考慮したシミュレーション
H-SPAR: Hydrodynamic-aware Simulation for Particle Transport and Autonomous Robots
水流がロボットの運動と粒子輸送に与える影響を統合的に扱う海洋ロボットシミュレータH-SPARを開発し、計画と実行のギャップやサンプリング性能を評価した。
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著者: Navid Zarrabi, Nariman Yousefi, Sajad Saeedi
分類: cs.RO
原文アブストラクト
Environmental robotic sampling requires considering the dual influence of water currents on robotic motion and particle transport. Existing marine robotics simulators generally model flow, autonomy, and sampling targets separately, limiting joint evaluation of mission cost and sampling performance. H-SPAR integrates spatially and temporally varying velocity fields, Lagrangian particle transport, probabilistic sampling, and ROS 2/Gazebo-based uncrewed surface vehicle (USV) autonomy. In this work, shared precomputed flow fields drive particle advection and current-induced forces during closed-loop vehicle execution. Path-planning experiments show that the existing current-aware planner SVF-RRT* achieves 69.4% lower upstream cost than conventional RRT* at the planning level, but this reduction falls to 41.7% during execution under time-varying currents, reflecting temporal flow variation, vehicle motion constraints, and path deviation omitted during planning. Coverage experiments show that sweep orientation changes the particle-sampling rate by up to 22.2% under the complete H-SPAR configuration. These findings highlight the importance of evaluating planning, vehicle execution, particle transport, and sampling together under consistent hydrodynamic conditions. The project webpage is available at https://sites.google.com/view/h-spar, and the open-source code is available on GitHub at https://github.com/naviiidz/h-spar-sim.