In this paper, the wall-following problem for low-velocity mobile robots, equipped with incremental encoders and one sonar sensor, is considered. A robust observer-based controller, which takes into account explicit constraints on the orientation of the sonar sensor with respect to the wall and the velocity of the wheels, is designed. The feedback controller provides convergence and fulfillment of the constraints, once an estimate of the position of the mobile robot, is available. Such an estimate is given by an Extended Kalman Filter (EKF), which is designed via a sensor fusion approach merging the velocity signals from the encoders and the distance measurements from the sonar. Some experimental tests are reported to discuss the robustness of the control scheme. [S0022-0434(00)01101-1]
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March 2000
Technical Briefs
Sonar-Based Wall-Following Control of Mobile Robots
Alberto Bemporad,
Alberto Bemporad
Automatic Control Laboratory, ETH Zentrum, ETL I24.2, 8092 Zu¨rich, Switzerland
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Mauro Di Marco,
Mauro Di Marco
Dipartimento di Sistemi e Informatica, Universita` di Firenze, Via di S. Marta 3, 50139 Firenze, Italy
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Alberto Tesi
Alberto Tesi
Dipartimento di Sistemi e Informatica, Universita` di Firenze, Via di S. Marta 3, 50139 Firenze, Italy
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Alberto Bemporad
Automatic Control Laboratory, ETH Zentrum, ETL I24.2, 8092 Zu¨rich, Switzerland
Mauro Di Marco
Dipartimento di Sistemi e Informatica, Universita` di Firenze, Via di S. Marta 3, 50139 Firenze, Italy
Alberto Tesi
Dipartimento di Sistemi e Informatica, Universita` di Firenze, Via di S. Marta 3, 50139 Firenze, Italy
Contributed by the Dynamic Systems and Control Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS. Manuscript received by the Dynamic Systems and Control Division December 2, 1998. Associate Technical Editor: S. D. Fassois.
J. Dyn. Sys., Meas., Control. Mar 2000, 122(1): 226-229 (4 pages)
Published Online: December 2, 1998
Article history
Received:
December 2, 1998
Citation
Bemporad, A., Di Marco , M., and Tesi, A. (December 2, 1998). "Sonar-Based Wall-Following Control of Mobile Robots." ASME. J. Dyn. Sys., Meas., Control. March 2000; 122(1): 226–229. https://doi.org/10.1115/1.482468
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