Track jump scheme without controller switching in optical disc drives

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Track jump control is a random access strategy applied to short distance movement less than 10 tracks. The most common track jump scheme is a bang-bang control of a kick and brake manner. In a conventional track jump scheme, a track-following controller is turned off during kick and brake periods, and restarted at a target track for track pull-in. The inevitable controller switching is accompanied by undesirable transient response due to non-zero initial condition, and overshoot in the transient response is a crucial factor regarding track pull-in stability. In this paper, a new track jump control scheme without controller switching is proposed for enhancing track jump stability. Instead of control switching, internal states of a track-following controller are artificially manipulated for kick and brake actions in a digital control environment. Experimental results are provided in comparison with conventional track jumps.

Original languageEnglish
Title of host publication2008 International Conference on Control, Automation and Systems, ICCAS 2008
Pages1696-1699
Number of pages4
DOIs
StatePublished - 2008
Event2008 International Conference on Control, Automation and Systems, ICCAS 2008 - Seoul, Korea, Republic of
Duration: 14 Oct 200817 Oct 2008

Publication series

Name2008 International Conference on Control, Automation and Systems, ICCAS 2008

Conference

Conference2008 International Conference on Control, Automation and Systems, ICCAS 2008
Country/TerritoryKorea, Republic of
CitySeoul
Period14/10/0817/10/08

Keywords

  • Initial value compensation
  • Optical disc drive
  • Radial servo system
  • Random access
  • Track jump control

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