JP4504830B2 - 磁気ディスク装置 - Google Patents

磁気ディスク装置 Download PDF

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Publication number
JP4504830B2
JP4504830B2 JP2005031547A JP2005031547A JP4504830B2 JP 4504830 B2 JP4504830 B2 JP 4504830B2 JP 2005031547 A JP2005031547 A JP 2005031547A JP 2005031547 A JP2005031547 A JP 2005031547A JP 4504830 B2 JP4504830 B2 JP 4504830B2
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JP
Japan
Prior art keywords
frequency
magnetic disk
resonance
characteristic
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2005031547A
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English (en)
Japanese (ja)
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JP2006221682A (ja
JP2006221682A5 (https=
Inventor
武憲 熱海
淳 奥山
Original Assignee
ヒタチグローバルストレージテクノロジーズネザーランドビーブイ
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Application filed by ヒタチグローバルストレージテクノロジーズネザーランドビーブイ filed Critical ヒタチグローバルストレージテクノロジーズネザーランドビーブイ
Priority to JP2005031547A priority Critical patent/JP4504830B2/ja
Priority to US11/347,358 priority patent/US7394609B2/en
Publication of JP2006221682A publication Critical patent/JP2006221682A/ja
Publication of JP2006221682A5 publication Critical patent/JP2006221682A5/ja
Application granted granted Critical
Publication of JP4504830B2 publication Critical patent/JP4504830B2/ja
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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • G11B5/553—Details
    • G11B5/5547—"Seek" control and circuits therefor

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  • Moving Of The Head To Find And Align With The Track (AREA)
JP2005031547A 2005-02-08 2005-02-08 磁気ディスク装置 Expired - Fee Related JP4504830B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2005031547A JP4504830B2 (ja) 2005-02-08 2005-02-08 磁気ディスク装置
US11/347,358 US7394609B2 (en) 2005-02-08 2006-02-03 Magnetic disk drive with positioning accuracy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005031547A JP4504830B2 (ja) 2005-02-08 2005-02-08 磁気ディスク装置

Publications (3)

Publication Number Publication Date
JP2006221682A JP2006221682A (ja) 2006-08-24
JP2006221682A5 JP2006221682A5 (https=) 2008-03-27
JP4504830B2 true JP4504830B2 (ja) 2010-07-14

Family

ID=36779665

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005031547A Expired - Fee Related JP4504830B2 (ja) 2005-02-08 2005-02-08 磁気ディスク装置

Country Status (2)

Country Link
US (1) US7394609B2 (https=)
JP (1) JP4504830B2 (https=)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7782003B2 (en) * 2005-11-03 2010-08-24 Seagate Technology Llc Positional indicia misplacement compensation
US7872905B2 (en) * 2006-12-19 2011-01-18 Hitachi Global Storage Technologies Netherlands B.V. Method and apparatus for write enable and inhibit for high density spin torque three dimensional (3D) memory arrays
JP2009076159A (ja) * 2007-09-21 2009-04-09 Fujitsu Ltd 制御装置、記憶装置および安定性判定方法
JP4748613B2 (ja) * 2008-11-21 2011-08-17 東芝ストレージデバイス株式会社 情報記憶装置およびサーボ制御用フィルタ学習プログラム
CN105374372A (zh) 2014-08-28 2016-03-02 株式会社东芝 盘装置及控制装置
CN114283669B (zh) * 2021-12-24 2023-02-28 东北大学 一种多变量开环不稳定对象的自动控制实验装置及方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62287482A (ja) * 1986-06-05 1987-12-14 Sony Corp 高密度記録再生装置
JP2508458B2 (ja) * 1986-06-05 1996-06-19 ソニー株式会社 回転記録媒体に対するサ―ボ装置
JPH05298842A (ja) 1992-02-18 1993-11-12 Toshiba Corp 磁気ディスク装置における磁気ヘッド位置決め制御装置
US6204988B1 (en) * 1998-08-24 2001-03-20 Western Digital Corporation Disk drive capable of autonomously evaluating and adapting the frequency response of its servo control system
JP2000132932A (ja) * 1998-10-26 2000-05-12 Internatl Business Mach Corp <Ibm> ヘッド位置サーボの補正方法およびディスク装置
US6643080B1 (en) * 1999-08-25 2003-11-04 Seagate Technology Llc Resonance identification by commanding a spindle speed change
JP4283979B2 (ja) * 2000-08-21 2009-06-24 株式会社日立グローバルストレージテクノロジーズ 位置決め制御装置
JP2002352534A (ja) 2001-05-24 2002-12-06 Hitachi Ltd 位置決め制御装置
JP4010867B2 (ja) * 2002-05-14 2007-11-21 株式会社日立グローバルストレージテクノロジーズ 位置決め制御装置

Also Published As

Publication number Publication date
JP2006221682A (ja) 2006-08-24
US7394609B2 (en) 2008-07-01
US20060176604A1 (en) 2006-08-10

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