ヘビ型ロボットによる全身協調型移動操作の自律制御
Autonomous Whole-body Loco-manipulation Using a Snake Robot
ヘビ型ロボットCOBRAが移動と操作を体全体で同時に行い、物体を目標位置まで押し運ぶ閉ループ制御を実現した。接触を陽に扱う動力学モデルと軌道最適化を組み合わせ、実機で検証した。
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著者: Adarsh Salagame, Henry Noyes, Haroon Hublikar, Alireza Ramezani
分類: cs.RO, eess.SY
原文アブストラクト
Snake robots can leverage their hyper-redundant morphology for both locomotion and manipulation through distributed body contact but whole-body loco-manipulation is particularly challenging since the entire body serves simultaneously as propulsive mechanism and manipulation tool Prior work on wheeled legged and snake robot platforms has decoupled these functions through dedicated appendages body segmentation or grippers We present closed-loop loco-manipulation with our snake robot COBRA without this distinction such that any part of the body may make contact We develop a contact-implicit dynamic model unifying robot-ground robot-object and object-ground interactions within a Moreau-Jean time-stepping framework and formulate a trajectory optimization over the full-order dynamics guided by a geometric planner and nominal proportional controller to autonomously push an object to a goal location during sidewinding We validate the planner and controller on hardware across varied configurations and present simulation results for a simplified trajectory optimization that resolves robot-object and object-ground contacts