• Title/Summary/Keyword: 근접장기록

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Disk Vibration and Eccentricity Compensation of Near Field Recoding Systems Based on the Internal Model Principle (IMP를 이용한 근접장 기록 장치의 디스크 진동 및 편심 보상)

  • Jeong, Jun;Kim, Joong-Gon;Park, No-Cheol;Yang, Hyun-Seok;Park, Young-Pil
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2007.05a
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    • pp.837-842
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    • 2007
  • Information storage devices using disks have a disk vibration at the frequency which is equivalent to the disk rotational speed. They also have a track vibration due to the disk eccentricity at the same frequency. In near field recording systems, the former affects the air-gap servo and the latter affects the tracking servo. In this paper, we introduce a novel control algorithm based on the internal model principle to both servos. A controller block designed by the principle is connected to the base lead-lag type compensator in parallel in order to cancel the repeatable run-out due to the disk vibration or eccentricity. Simulation and practical application of the algorithm on a near field recording system show good servo performance.

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