複雑な多点接触における脚式ロボットのリアルタイム安定性制御のための最適化レンチポリトープ解析
Optimized Wrench Polytope Analysis for Real-Time Stability Control of Legged Robots in Complex Multi-Contact Configurations
任意の接触シナリオで実行可能なレンチポリトープを高速に評価するアルゴリズムを提案し、49Hzの制御周期で関節トルクを計算可能にした。シミュレーションと実機で検証し、従来困難だった複雑な状況での安定性を実現した。
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著者: Friedrich Graaf, Elias Birkefeld, Christian Eichmann, Elias Hofele, Tristan Schnell, Georg Heppner, Arne Roennau, Rüdiger Dillmann
分類: cs.RO
原文アブストラクト
Legged robots offer a variety of automation applications in real-world scenarios. But areas that are difficult to traverse, like slopes, caves, or scaffolding, still pose a great challenge for traversal. To tackle this problem, we propose an optimized algorithm for evaluating the full actuatable wrench polytope for arbitrary contact scenarios. With our improved analysis algorithm, the torques for each joint of the robot can be calculated within a control frequency of 49 Hz. The achieved speedup allows for deployment within a regular control loop for actuating robot poses for different contact scenarios. We evaluated our stability controller extensively in simulation scenarios and validated its applicability by deploying it on actual walking robot hardware. The proposed controller achieved stability in very complex scenarios that are currently not achievable by any other controller.