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. 2015 Dec 26;16(1):24. doi: 10.3390/s16010024

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© 2015 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

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Traveled distance measured by left and right wheels for both robots. (a) Distance traveled by left and right wheels for robot 1; (b) Distance traveled by left and right wheels for robot 2.