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Efficient Estimation of Frequency Response Functions of Industrial Robots Using the Local Rational Method
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, Faculty of Science & Engineering.
ABB Robot, Sweden.
2024 (English)In: 2024 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS 2024), IEEE , 2024, p. 8717-8723Conference paper, Published paper (Refereed)
Abstract [en]

Nonparametric estimates of frequency response functions (FRFs) are often suitable for describing the dynamics of a mechanical system. If treating these estimates as measurements, they can be used for parametric identification of, e.g., a gray-box model. This paper shows that a more accurate parametric model can be identified based on local parametric FRF estimates, giving a shorter total experiment time, compared to classical methods. Classical methods for nonparametric FRF estimation of MIMO (Multiple Input Multiple Output) systems require at least as many experiments as the system has inputs. Local parametric FRF estimation methods have been developed for avoiding multiple experiments. In this paper, these local methods are adapted and applied for estimating the FRFs of a 6-axes robotic manipulator, which is a nonlinear MIMO system operating in closed loop. The aim is to reduce the experiment time and amount of data needed for identification. The resulting FRFs are analyzed in an experimental study and compared to estimates obtained by classical MIMO techniques.

Place, publisher, year, edition, pages
IEEE , 2024. p. 8717-8723
Series
IEEE International Conference on Intelligent Robots and Systems, ISSN 2153-0858, E-ISSN 2153-0866
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:liu:diva-212859DOI: 10.1109/IROS58592.2024.10802182ISI: 001433985300140Scopus ID: 2-s2.0-85216491852ISBN: 9798350377712 (print)ISBN: 9798350377705 (electronic)OAI: oai:DiVA.org:liu-212859DiVA, id: diva2:1950688
Conference
2024 International Conference on Intelligent Robots and Systems, Abu Dhabi, U ARAB EMIRATES, oct 14-18, 2024
Note

Funding Agencies|Vinnova competence center LINK-SIC

Available from: 2025-04-08 Created: 2025-04-08 Last updated: 2025-04-08

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Total: 36 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf