マルチロボットCBF安全フィルタの厳密な実行可能性認定と最適な責任配分
Exact Feasibility Certification and Optimal Responsibility Allocation for Multi-Robot CBF Safety Filters
複数ロボットのCBF安全フィルタが実行不可能になる原因を厳密に特定する認定手法を開発し、共有安全制約を最適配分することで実行不可能な制御ステップを約50%から6.2%に削減した。
詳しい要約
1. どんなもの?
2. 先行研究と比べてどこがすごい?
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著者: Chandan Kumar Sah, Jishnu Keshavan
分類: cs.RO, cs.MA
原文アブストラクト
Multi-robot Control Barrier Function (CBF) safety filters can become infeasible, but a failed quadratic program (QP) does not indicate why the conflict occurred or how to resolve it. To address this, we develop an exact feasibility certificate for multi-agent CBF filters with heterogeneous control-affine dynamics and convex input sets. The certificate quantifies a feasibility reserve by separating the demand imposed by safety constraints from the available actuator supply. This decomposition shows when CBF gain tuning or increased actuation can and cannot resolve infeasibility, and identifies the agents and interactions responsible for the conflict. We further propose an algorithm to optimally allocate shared safety constraints by maximizing the worst local feasibility margin, yielding a linear program for polyhedral input sets. In $320$ paired closed-loop simulations, the proposed allocation reduces infeasible control steps from roughly $50\%$ to $6.2\%$, and reduces safety-violating runs from $118/160$ to $24/160$. In addition, across $52$ infeasibility events, the certificate identifies an interaction whose relaxation restores feasibility in $94\%$ of cases.