触覚で決める局部制御:細やかなグリッパ操作のための局所触覚ポリシー学習
Touch Where It Matters: Learning Local Tactile Policies for Fine-Grained Gripper Control
視覚ベースのポリシーが腕を動かす一方で、接触が多い局面では触覚と力の履歴からグリッパの微調整を局所的に学習するContactPolicyを提案し、容器開封や道具操作で成功率を向上させた。
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?
4. どうやって有効だと検証した?
5. 議論はある?
6. 次に読むべき論文は?
※ AIが要旨から生成した要約です。正確性は原文をご確認ください。
著者: Mingyuan Ba, Yanan Zhou, James Zhao, Weiming Zhi
分類: cs.RO
原文アブストラクト
Visual imitation policies can organise task motion, yet contact-rich object use demands gripper adjustments beyond coarse opening and closing. We study fine-grained gripper control as a local feedback problem within ongoing task execution. Our approach assigns tactile feedback a dedicated control role during contact-rich task stages. We introduce ContactPolicy, a learned local controller that takes over the gripper while a visual base policy continues to control the arm. ContactPolicy combines tactile and force histories with current robot state to jointly predict gripper increments and their modulation, updating the gripper target from each new observation. An Intent policy manages control handover between the visual base policy and ContactPolicy. Real-world experiments on container opening, object handling, and tool operation show improved task success over both the Visuomotor Policy and Tactile-Force Policy baselines. Execution analysis illustrates how the gripper adjusts contact within an ongoing task, including periods of target retention and fine-grained changes as interaction conditions evolve. Arm-state ablations and failure analysis further examine how execution context supports local regulation. These results support task-local tactile policies for fine-grained gripper control within visual manipulation.