Multiple robust track-following controller design in hard disk drives

Jongeun Choi, Ryozo Nagamune, Roberto Horowitz

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


This paper presents a new technique for track-following control in hard disk drives, in order to achieve high tracking precision of magnetic read-write heads uniformly for a huge number of disk drives. The basic idea in this technique is to classify the disk drives into several sets depending on dynamics properties, and to apply a robust controller to each set. The problem of designing the optimal classification of dynamics and the corresponding optimal robust controllers is formulated as a nonconvex optimization problem, for which sub-optimal solutions are to be found numerically. A numerical simulation shows the usefulness of the proposed technique by illustrating a tracking performance improvement.

Original languageEnglish
Pages (from-to)359-373
Number of pages15
JournalInternational Journal of Adaptive Control and Signal Processing
Issue number4
Publication statusPublished - 2008 May

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Signal Processing
  • Electrical and Electronic Engineering


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