Distributed Estimation of State and Parameters in Multiagent Cooperative Load Manipulation

Antonio Franchi*, Antonio Petitti, Alessandro Rizzo

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

4 Citations (Scopus)

Abstract

We present two distributed methods for the estimation of the kinematic parameters, the dynamic parameters, and the kinematic state of an unknown planar body manipulated by a decentralized multiagent system. The proposed approaches rely on the rigid body kinematics and dynamics, on nonlinear observation theory, and on consensus algorithms. The only three requirements are that each agent can exert a 2-D wrench on the load, it can measure the velocity of its contact point, and that the communication graph is connected. Both theoretical nonlinear observability analysis and convergence proofs are provided. The first method assumes constant parameters, while the second one can deal with time-varying parameters and can be applied in parallel to any task-oriented control law. For the cases in which a control law is not provided, we propose a distributed and safe control strategy satisfying the observability condition. The effectiveness and robustness of the estimation strategy are showcased by means of realistic Monte Carlo simulations.

Original languageEnglish
Article number8476991
Pages (from-to)690-701
Number of pages12
JournalIEEE transactions on control of network systems
Volume6
Issue number2
DOIs
Publication statusPublished - Jun 2019
Externally publishedYes

Keywords

  • Cooperative manipulation
  • multi-robot systems
  • networked control systems
  • observers
  • parameter estimation

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