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An experimental study on Cartesian impedance control for a joint torque-based manipulator

  • German Aerospace Center
  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

The purpose of this paper is to present our results on experimental investigations on Cartesian impedance control and nonlinearity compensation for our harmonic drive robot based on joint torque sensors. The imperfection of the cubic model for harmonic drive friction is detected according to friction identification experiments. In addition, five different Cartesian impedance control schemes are considered and four of them are tested by corresponding experiments with/without friction compensation. Experimental results tell us that the force-based impedance control strategy is more suitable than the position-based strategy for the harmonic drive robot based on joint torque feedback.

Original languageEnglish
Pages (from-to)1155-1180
Number of pages26
JournalAdvanced Robotics
Volume22
Issue number11
DOIs
StatePublished - 1 Aug 2008

Keywords

  • Force-based impedance control
  • Friction identification
  • Harmonic drive transmission
  • Joint torque
  • Position-based impedance control

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