旋回円ベースの制御バリア関数を用いた水上車両のマルチモーダル軌道計画
Multimodal Trajectory Planning for Surface Vehicles using Turning Circle-based Control Barrier Functions
水上車両の非ホロノミックな運動と旋回能力を考慮した制御バリア関数を提案し、モデル予測制御と組み合わせて、局所最適やデッドロックを回避しつつ、動的環境で安全な軌道を計画する手法を提案した。
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著者: Changyu Lee
分類: cs.RO
原文アブストラクト
This paper presents a guide path-free multimodal trajectory planning framework for autonomous surface vehicles operating in dynamic environments. The proposed method integrates model predictive control (MPC) with a turning circle-based control barrier function (TC-CBF). Unlike conventional Euclidean distance-based CBFs (ED-CBFs), which evaluate safety solely based on proximity, the TC-CBF accounts for the nonholonomic motion and finite turning capability of a surface vehicle. Its geometric formulation identifies feasible avoidance regions according to the vehicle's turning circles and generates distinct left- and right-turning avoidance modes. These modes allow the optimization solver to explore and select topologically different trajectories without relying on globally planned guide paths, as required by many conventional multimodal planning approaches. By embedding the avoidance direction directly into the safety constraint, the proposed framework alleviates the local-minimum and deadlock problems of single-mode MPC while maintaining computational efficiency. Extensive simulations involving multiple moving vessels demonstrate that the proposed method achieves higher success rates, fewer safety violations, and smaller residual violations than single-mode baselines across all tested traffic densities.