Stabilization of Focus Servo System for High-Speed Access in a 90 mm MO Disk Drive

• Harutaka Sekiya Harutaka Sekiya

• Shin Kagami Shin Kagami

抄録

Stability of a focus servo system was studied in a 90 mm magneto-optical (MO) disk drive that uses a separated optical system for high-speed access. The separated optical system had two major problems of focus servo system instability-one is caused by a mechanical feedback (MFB) due to mechanical resonance of a disk and the other is caused by a complex feed-back of both mechanical and optical crosstalks. The mechanisms of these problems are clarified, and high-speed access of less than 30 ms is achieved. In this paper, the mechanisms are discussed and effective solutions are presented.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 31 (2S), 648-, 1992-02-01

  IOP Publishing

キーワード

• General Physics and Astronomy
• General Engineering

詳細情報

• CRID: 1360847871771617536
• NII論文ID: 30021861216
• NII論文ID: 210000032625
• NII書誌ID: AA10457675
• DOI: 10.1143/jjap.31.648
• ISSN: 13474065
• ISSN: 00214922
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.31.648
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.31.648/pdf
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