A Real-Time Hybrid Architecture for Biped Humanoids with Active Vision Mechanisms

Authors:
Javier Testart;Javier Ruiz Del Solar;Rodrigo Schulz;Pablo Guerrero;Rodrigo Palma-Amestoy
Affiliations:
Department of Electrical Engineering & Advanced Mining Technology Center, Universidad de Chile, Santiago, Chile;Department of Electrical Engineering & Advanced Mining Technology Center, Universidad de Chile, Santiago, Chile;Department of Electrical Engineering & Advanced Mining Technology Center, Universidad de Chile, Santiago, Chile;Department of Electrical Engineering & Advanced Mining Technology Center, Universidad de Chile, Santiago, Chile;Department of Electrical Engineering & Advanced Mining Technology Center, Universidad de Chile, Santiago, Chile
Venue:
Journal of Intelligent and Robotic Systems
Year:
2011

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Abstract

A real-time hybrid control architecture for biped humanoid robots is proposed. The architecture is modular and hierarchical. The main robot's functionalities are organized in four parallel modules: perception, actuation, world-modeling, and hybrid control. Hybrid control is divided in three behavior-based hierarchical layers: the planning layer, the deliberative layer, and the reactive layer, which work in parallel and have very different response speeds and planning capabilities. The architecture allows: (1) the coordination of multiple robots and the execution of group behaviors without disturbing the robot's reactivity and responsivity, which is very relevant for biped humanoid robots whose gait control requires real-time processing. (2) The straightforward management of the robot's resources using resource multiplexers. (3) The integration of active vision mechanisms in the reactive layer under control of behavior-dependant value functions from the deliberative layer. This adds flexibility in the implementation of complex functionalities, such as the ones required for playing soccer in robot teams. The architecture is validated using simulated and real Nao humanoid robots. Passive and active behaviors are tested in simulated and real robot soccer setups. In addition, the ability to execute group behaviors in real- time is tested in international robot soccer competitions.