aUToPath: 都市環境における自動運転車のためのハイブリッドラティスと自由空間探索を用いた統合計画・制御
aUToPath: Unified Planning and Control for Autonomous Vehicles in Urban Environments Using Hybrid Lattice and Free-Space Search
都市環境での自動運転ナビゲーションのために、事前計算されたラティスマップと動的自由空間サンプリングを組み合わせたハイブリッドプランナと、逐次凸計画法に基づくモデル予測制御を統合したフレームワークを提案し、シミュレーションと実車実験で有効性を示した。
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?
3. 技術・手法の肝は?
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著者: Tanmay P. Patel, Connor Wilson, Ellina R. Zhang, Morgan Tran, Chang Keun Paik, Steven L. Waslander, Timothy D. Barfoot
分類: cs.RO
原文アブストラクト
This paper presents aUToPath, a unified online framework for global path-planning and control to address the challenge of autonomous navigation in cluttered urban environments. A key component of our framework is a novel hybrid planner that combines pre-computed lattice maps with dynamic free-space sampling to efficiently generate optimal driveable corridors in cluttered scenarios. Our system also features sequential convex programming (SCP)-based model predictive control (MPC) to refine the corridors into smooth, dynamically consistent trajectories. A single optimization problem is used to both generate a trajectory and its corresponding control commands; this addresses limitations of decoupled approaches by guaranteeing a safe and feasible path. Simulation results of the novel planner on randomly generated obstacle-rich scenarios demonstrate the success rate of a free-space Adaptively Informed Trees* (AIT*)-based planner, and runtimes comparable to a lattice-based planner. Real-world experiments of the full system on a Chevrolet Bolt EUV further validate performance in dense obstacle fields, demonstrating no violations of traffic, kinematic, or vehicle constraints, and a 100% success rate across eight trials.
