On-line identification of current and position stiffnesses by LMS algorithm in active magnetic bearing system equipped with force transducers

Seung Jong Kim, Chong Won Lee

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

For on-line identification of the current and position stiffnesses in an active magnetic bearing (AMB) system equipped with four pairs of built-in radial magnetic force transducers, a modified least-mean-squares (LMS) algorithm is proposed. The algorithm, which is based on a simple linearised magnetic force equation, utilizes three kinds of measured signals, i.e. rotor displacement, control current and magnetic force. The simulation and experimental results show that the proposed algorithm is very simple and effective in adaptively identifying the current and position stiffnesses of the AMB.

Original languageEnglish
Pages (from-to)681-690
Number of pages10
JournalMechanical Systems and Signal Processing
Volume13
Issue number5
DOIs
Publication statusPublished - 1999 Sep
Externally publishedYes

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Signal Processing
  • Civil and Structural Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Computer Science Applications

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