Internal model control of lightly damped systems subject to periodic exogenous signals

Yu Sheng Lu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


This paper presents an internal model control (IMC) design for lightly-damped systems subject to periodic exogenous signals. For such systems, the conventional design of the so-called IMC filter in the IMC structure can result in oscillatory behavior even when the closed-loop transfer function is designed to be well damped. To circumvent this problem, several band-pass filters are incorporated into the IMC filter based on knowledge of the frequencies of the plant's resonance modes and exogenous signals. The track-following system of an optical disk drive is employed to illustrate the design of the proposed IMC filter. Experimental results confirm the effectiveness of the proposed design.

Original languageEnglish
Article number5169868
Pages (from-to)699-704
Number of pages6
JournalIEEE Transactions on Control Systems Technology
Issue number3
Publication statusPublished - 2010 May


  • Bandpass filters
  • Control systems
  • Internal model control
  • Lightly damped systems
  • Optical disk drives
  • Periodic exogenous signals

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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