A multi-agent system architecture for mobile robot navigation based on fuzzy and visual behaviour

Authors:
Rafael Muñoz-Salinas;Eugenio Aguirre;Miguel García-Silvente;Moisés Gómez
Affiliations:
Department of Computer Science and Artificial Intelligence, E.T.S. de Ingeniería Informática, University of Granada, 18071 Granada (Spain);Department of Computer Science and Artificial Intelligence, E.T.S. de Ingeniería Informática, University of Granada, 18071 Granada (Spain);Department of Computer Science and Artificial Intelligence, E.T.S. de Ingeniería Informática, University of Granada, 18071 Granada (Spain);Department of Computer Science and Artificial Intelligence, E.T.S. de Ingeniería Informática, University of Granada, 18071 Granada (Spain)
Venue:
Robotica
Year:
2005

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Abstract

A multi-agent system based on behaviour for controlling the navigation task of a mobile robot in office-like environments is presented. The set of agents is structured into a three-layer hybrid architecture. A high level of abstraction plan is created using a topological map of the environment in the Deliberative layer. It is composed by the sequence of rooms and corridors to traverse and doors to cross in order to reach a desired room. The Execution and Monitoring layer translates the plan into a sequence of available skills in order to achieve the desired goal and monitors the execution of the plan. In the Control layer there is a set of agents that implements fuzzy and visual behaviours that run concurrently to guide the robot. Fuzzy behavior manages the vagueness and uncertainty of the range sensor information allowing to navigate safely in the environment. Visual behavior locates a required door to cross and fixate it, indicating the appropriate direction to reach it. Artificial landmarks are placed beside the doors to show its position. The system has been implemented in a Nomad 200 mobile robot and has been validated in numerous experiments in a real office-like environment.