Bilateral teleoperation of groups of mobile robots with time-varying topology

Antonio Franchi, Cristian Secchi, Hyoung Il Son, Heinrich H. Bülthoff, Paolo Robuffo Giordano

Research output: Contribution to journalArticle

124 Citations (Scopus)

Abstract

In this paper, a novel decentralized control strategy for bilaterally teleoperating heterogeneous groups of mobile robots from different domains (aerial, ground, marine, and underwater) is proposed. By using a decentralized control architecture, the group of robots, which is treated as the slave side, is made able to navigate in a cluttered environment while avoiding obstacles, interrobot collisions, and following the human motion commands. Simultaneously, the human operator acting on the master side is provided with a suitable force feedback informative of the group response and of the interaction with the surrounding environment. Using passivity-based techniques, we allow the behavior of the group to be as flexible as possible with arbitrary split and join events (e.g., due to interrobot visibility/packet losses or specific task requirements) while guaranteeing the stability of the system. We provide a rigorous analysis of the system stability and steady-state characteristics and validate performance through human/hardware-in-the-loop simulations by considering a heterogeneous fleet of unmanned aerial vehicles (UAVs) and unmanned ground vehicles as a case study. Finally, we also provide an experimental validation with four quadrotor UAVs.

Original languageEnglish
Article number6199993
Pages (from-to)1019-1033
Number of pages15
JournalIEEE Transactions on Robotics
Volume28
Issue number5
DOIs
Publication statusPublished - 2012 May 22

Keywords

  • Decentralized control
  • distributed algorithms
  • distributed robot systems
  • haptics
  • mobile agents
  • multirobot systems
  • networked robots
  • passivity-based control
  • teleoperation of mobile robots
  • telerobotics

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering

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