Sensorless non-linear position-stabilising control for magnetic levitation systems

Seok Kyoon Kim, Choon Ki Ahn

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


This study presents a solution to the position stabilisation problem for non-linear magnetic levitation systems using the only position measurement. This considers parameter and load variations without the use of current and velocity feedback. The features are given as follows: (i) the removal of current and velocity feedback by the proposed first-order state estimators without system parameters, (ii) securing of improved closed-loop robustness from the combination of active damping and specified feedback gain with the closed-loop system order reduced to 1 and (iii) proof of performance recovery and offset-free in the absence of regulation error integral actions. The numerical simulations verify the performance and robustness improvements through realistic scenarios.

Original languageEnglish
Pages (from-to)2682-2687
Number of pages6
JournalIET Control Theory and Applications
Issue number17
Publication statusPublished - 2020 Nov 26

ASJC Scopus subject areas

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


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