Bilateral Control of the Degree of Connectivity in Multiple Mobile-Robot Teleoperation

Christian Secchi 1 Antonio Franchi 2 Heinrich H Bülthoff 2, 3 Paolo Robuffo Giordano 2, 4
1 UNIMORE - Università degli Studi di Modena e Reggio Emilia
2 Max Planck Institute for Biological Cybernetics
3 Brain and Cognitive Sciences, Séoul
4 Lagadic - Visual servoing in robotics, computer vision, and augmented reality
CRISAM - Inria Sophia Antipolis - Méditerranée , Inria Rennes – Bretagne Atlantique , IRISA-D5 - SIGNAUX ET IMAGES NUMÉRIQUES, ROBOTIQUE
Abstract : This paper presents a novel bilateral controller that allows to stably teleoperate the degree of connectivity in the mutual interaction between a remote group of mo- bile robots considered as the slave-side. A distributed leader- follower scheme allows the human operator to command the overall group motion. The group autonomously maintains the connectivity of the interaction graph by using a decentralized gradient descent approach applied to the Fiedler eigenvalue of a properly weighted Laplacian matrix. The degree of connectivity, and then the flexibility, of the interaction graph can be finely tuned by the human operator through an additional bilateral teleoperation channel. Passivity of the overall system is theoretically proven and extensive human/hardware in-the-loop simulations are presented to empirically validate the theoretical analysis.
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https://hal.inria.fr/hal-00910833
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Submitted on : Thursday, November 28, 2013 - 12:04:23 PM
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Christian Secchi, Antonio Franchi, Heinrich H Bülthoff, Paolo Robuffo Giordano. Bilateral Control of the Degree of Connectivity in Multiple Mobile-Robot Teleoperation. IEEE Int. Conf. on Robotics and Automation, ICRA 2013, May 2013, Karlsruhe, Germany. pp.3645-3652, ⟨10.1109/ICRA.2013.6631089⟩. ⟨hal-00910833⟩

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