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Avoiding obstacles - multisensor navigation for nonholonomic robots in cluttered environments

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2 Author(s)
C. Marques ; Inst. Superior Tecnico, Lisboa Tech. Univ., Portugal ; P. Lima

This article introduces a navigation method for nonholonomic (differential drive) vehicles, based on odometry, regularly reset by a vision-based self-localization algorithm, and endowed with a sonar-based obstacle avoidance and guidance control algorithm that does not rely on path planning. The guidance controller is used in the soccer robots of the RoboCup middle-size league (MSL) ISocRob team, fully integrated in the state machine that coordinates task execution. The algorithm can be generally applied to structured indoor environments, provided that visual features can be observed by the self-localization method and that the visual information is not ambiguous.

Published in:

IEEE Robotics & Automation Magazine  (Volume:11 ,  Issue: 3 )