Robotic Force Control using Observer-based Strict Positive Real Impedance Control

Rolf Johansson, Anders Robertsson

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

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Abstract

This paper presents theoretical and experimentalresults on observer-based impedance control for forcecontrol without velocity feedback. As the velocity may notavailable to measurement, which is often the case for industrialrobots, an observer was designed to reconstruct velocityin such a way that it be useful for stabilizing feedbackcontrol and to modification of the damping in the impedancerelationship. A good model of the robot joint used wasobtained by system identification. Experiments were carriedout on an ABB industrial robot 2000 to demonstrate resultson observer-based SPR feedback applied in the design.Stability was shown via a modified Popov criterion.
Original languageEnglish
Title of host publicationProceedings. ICRA '03.
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Pages3686-3691
Volume3
ISBN (Print)0-7803-7736-2
DOIs
Publication statusPublished - 2003

Publication series

Name
Volume3
ISSN (Print)1050-4729
ISSN (Electronic)2152-4092

Subject classification (UKÄ)

  • Control Engineering

Free keywords

  • velocity feedback
  • stability
  • robotic force control
  • observer
  • industrial robots
  • impedance control
  • feedback control
  • ABB industrial robot 2000
  • Popov criterion

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