APTree: 建設における適応的でスケーラブルな自動ロボットタスク計画のための拡張ビヘイビアツリー
APTree: Extended Behavior Trees for Adaptive and Scalable Automated Robotic Task Planning in Construction
建設プレファブ作業のロボットタスク計画を自動化するため、ビヘイビアツリーと複数の記号プランナを組み合わせたモデル駆動型フレームワークAPTreeを提案し、実証実験と形式検証を行った。
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著者: Shermin Sherkat, Thomas Wortmann, Andreas Wortmann
分類: cs.RO, cs.AI, cs.SE
原文アブストラクト
Task planning for robots in off-site construction prefabrication is primarily manual, leading to planning inefficiencies and reluctance to adopt robotic solutions. Existing approaches provide limited support for scalable, modular automated task planning and localized runtime replanning. This paper proposes APTree, a model-driven framework that integrates automated task planning with modular task execution using behavior trees as the execution model. APTree repeatedly applies and coordinates heterogeneous symbolic planners to automatically generate and compose modular task plans at runtime. To support this approach, we develop a domain-specific language for the formal specification and validation of task plans, together with a compatible execution engine. We evaluate APTree on the real-world livMatS Biomimetic Shell pavilion, where it models the construction robotic fabrication domain, detects injected specification and planning errors at design time and runtime, and automatically generates large-scale task plans by coordinating three symbolic planners across numerous planning modules. A machine-checked formal analysis further shows that composed execution and local replanning are safe under explicitly stated assumptions, including planner soundness and non-interference of generated plans, providing practitioners with explicit conditions for dependable plan composition. APTree thus enables construction practitioners to leverage automated task planning without requiring detailed knowledge of symbolic planning techniques or APTree's internal implementation.