Four-Arm Collaboration: Two Dual-Arm Robots Work Together to Maneuver Tethered Tools


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In this paper, we present a planner for a master dual-arm robot to manipulate tethered tools with an assistant dual-arm robots help. The assistant robot provides assistance to the master robot by manipulating the tool cable and avoiding collisions. The provided assistance allows the master robot to perform tool placements on the robot workspace table to regrasp the tool, which would typically fail since the tool cable tension may change the tool positions. It also allows the master robot to perform tool handovers, which would normally cause entanglements or collisions with the cable and the environment without the assistance. Simulations and real-world experiments are performed to validate the proposed planner.

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