Variable cut-off frequency algorithm-based nonlinear position controller for magnetic levitation system applications

Seok Kyoon Kim, Choon Ki Ahn

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

In this article, the position-tracking problem for magnetic levitation (MAGLEV) systems is addressed by handling the model nonlinearities and uncertainties of parameters and loads. The first feature is devising a variable cut-off frequency algorithm enhancing the transient tracking performance by updating the feedback gain accordingly. The second is introducing the disturbance observer (DOB) improving the disturbance attenuation performance with the offset-free property, which corresponds to the replacement of tracking error integrators. The simulation results numerically demonstrate the effectiveness of the proposed technique considering model-plant mismatches and load variations.

Original languageEnglish
Article number8867963
Pages (from-to)4599-4605
Number of pages7
JournalIEEE Transactions on Systems, Man, and Cybernetics: Systems
Volume51
Issue number7
DOIs
Publication statusPublished - 2021 Jul

Keywords

  • Disturbance observer (DOB)
  • magnetic levitation (MAGLEV)
  • stability
  • variable cut-off frequency

ASJC Scopus subject areas

  • Software
  • Control and Systems Engineering
  • Human-Computer Interaction
  • Computer Science Applications
  • Electrical and Electronic Engineering

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