Modal analysis of optical disk rotating at 15,000 rpm close to a rigid wall

Wonseok Oh, Seungho Lim, Byunghan Ko, Kyoung Su Park, No Cheol Park, Young Pil Park, Han Baek Lee

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Abstract

The rotational speed of optical disks must be above 15,000 rpm owing to the required high data-transfer rates. At these speeds, the airflow between the rotating disk and a rigid wall is important when identifying the dynamic characteristics of the disk in a slim optical disk drive. This airflow is simulated using a numerical model and examined by a closed-form modal analysis. The calculated dynamic characteristics of the rotating disk can be used to predict the nonrepeatable runout for the servo controller design.

Original languageEnglish
Article number08JA06
JournalJapanese journal of applied physics
Volume51
Issue number8 PART 3
DOIs
Publication statusPublished - 2012 Aug 1

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All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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