CMUnited-98: A Team of Robotic Soccer Agents

Manuela Veloso, Michael Bowling, Sorin Achim, Kwun Han, and Peter Stone, Carnegie Mellon University

In this paper, we present the main research contributions of our champion CMUnited-98 small robot team. The team is a multi-agent system in the robotic soccer entertainment application area. The robotic system has global perception and distributed cognition and action. We describe the main features of the hardware design of the physical robots, including differential drive, robust mechanical structure, and a kicking device. We brie y overview the CMUnited-98 global vision processing algorithm. We then introduce our new robot motion algorithm which reactively generates motion control to account for the target point, the desired robot orientation, and obstacle avoidance. Our robots exhibit successful collision-free motion in the highly dynamic robotic soccer environment. At the strategic and decision-making level, we present the role-based behaviors of the CMUnited98 robotic agents. Team collaboration is remarkably achieved through a new algorithm that allows for team agents to anticipate possible collaboration opportunities. Robots position themselves strategically in open positions that increase passing opportunities. The paper terminates with a summary of the results of the RoboCup-98 games in which the CMUnited-98 small robot team scored a total of 25 goals and suffered 6 goals in the 5 games that it played.

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