Wall-following controllers for sonar-based mobile robots

摘要

For mobile robots equipped with incremental encoders and one sonar sensor this paper presents wall-following controllers that achieve global convergence, as well as the fulfillment of constraints on the orientation of the sonar and the velocities of the wheels. A sensor fusion approach for the estimation of the robot's coordinates is adopted by designing an extended Kalman filter that combines ultrasonic and odometric data.