JP7199310B2 - 磁気ディスク装置 - Google Patents
磁気ディスク装置 Download PDFInfo
- Publication number
- JP7199310B2 JP7199310B2 JP2019110485A JP2019110485A JP7199310B2 JP 7199310 B2 JP7199310 B2 JP 7199310B2 JP 2019110485 A JP2019110485 A JP 2019110485A JP 2019110485 A JP2019110485 A JP 2019110485A JP 7199310 B2 JP7199310 B2 JP 7199310B2
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- Prior art keywords
- magnetic disk
- transfer function
- value
- gain
- actuator
- 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.)
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-
- 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
- G11B5/5552—Track change, selection or acquisition by displacement of the head across disk tracks using fine positioning means for track acquisition separate from the coarse (e.g. track changing) positioning means
-
- 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
- G11B5/5569—Track change, selection or acquisition by displacement of the head across disk tracks details of specially adapted mobile parts, e.g. electromechanical control devices
- G11B5/5578—Multiple actuators addressing the same disk, e.g. to improve data rate or access rate
-
- 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
- G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
- G11B5/59605—Circuits
- G11B5/59622—Gain control; Filters
-
- 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
- G11B5/4806—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 specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
- G11B5/4873—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 specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives the arm comprising piezoelectric or other actuators for adjustment of the arm
-
- 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
- G11B5/5534—Initialisation, calibration, e.g. cylinder "set-up"
-
- 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
-
- 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
-
- 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
-
- 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
- G11B5/5552—Track change, selection or acquisition by displacement of the head across disk tracks using fine positioning means for track acquisition separate from the coarse (e.g. track changing) positioning means
- G11B5/5556—Track change, selection or acquisition by displacement of the head across disk tracks using fine positioning means for track acquisition separate from the coarse (e.g. track changing) positioning means with track following after a "seek"
-
- 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
- G11B5/5582—Track change, selection or acquisition by displacement of the head across disk tracks system adaptation for working during or after external perturbation, e.g. in the presence of a mechanical oscillation caused by a shock
Landscapes
- Moving Of The Head To Find And Align With The Track (AREA)
- Supporting Of Heads In Record-Carrier Devices (AREA)
Description
(第1の実施形態)
図1は、実施形態に関する磁気ディスク装置1の構成の一例を示すブロック図である。
Claims (7)
- 磁気ヘッドを含む磁気ヘッド部を動作させる第1のアクチュエータと、
磁気ディスク上で前記磁気ディスクの半径方向に前記磁気ヘッドの位置を調整する第2のアクチュエータと、
前記第2のアクチュエータのゲイン推定値と、第1の伝達関数を測定する際の前記第2のアクチュエータへの入力電圧振幅とに応じて、第2の伝達関数を測定する際の入力振幅を決定し、前記第1の伝達関数と、前記第2の伝達関数とに基づいて、前記第2のアクチュエータのゲイン推定値を算出し、当該算出したゲイン推定値で前記ゲイン推定値を更新する制御部と、
を備える磁気ディスク装置。 - 所定のタイミングで更新される前記ゲイン推定値の履歴情報を記憶するメモリを備える、
請求項1記載の磁気ディスク装置。 - 前記メモリに記憶される前記ゲイン推定値の履歴情報は、外部からの指示に基づいて、出力可能に構成される、
請求項2に記載の磁気ディスク装置。 - 前記第2の伝達関数を測定する際の入力振幅は、前記第2のアクチュエータの前記ゲイン推定値と前記第1の伝達関数を測定する際の前記第2のアクチュエータへの入力電圧振幅の積である、
請求項1から3のいずれか一項に記載の磁気ディスク装置。 - 前記ゲイン推定値の初期値は、所定の設計値、又は、複数の所定の測定値の平均値である、
請求項1から4のいずれか一項に記載の磁気ディスク装置。 - 前記ゲイン推定値の初期値は、前記第1の伝達関数と任意の外乱の値を用いて測定した前記第2の伝達関数とに基づく値である、請求項1から4のいずれか一項に記載の磁気ディスク装置。
- 前記制御部は、前記第1の伝達関数と、前記第2の伝達関数とに基づいて算出される前記第2のアクチュエータの前記ゲイン推定値が所定値に収束するまで前記ゲイン推定値を更新する処理を行う、
請求項1から請求項6のいずれか一項に記載の磁気ディスク装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019110485A JP7199310B2 (ja) | 2019-06-13 | 2019-06-13 | 磁気ディスク装置 |
CN202010000205.5A CN112086110B (zh) | 2019-06-13 | 2020-01-02 | 磁盘装置 |
US16/752,890 US10930311B2 (en) | 2019-06-13 | 2020-01-27 | Dual state actuators controlling for magnetic recording device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019110485A JP7199310B2 (ja) | 2019-06-13 | 2019-06-13 | 磁気ディスク装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2020202004A JP2020202004A (ja) | 2020-12-17 |
JP7199310B2 true JP7199310B2 (ja) | 2023-01-05 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2019110485A Active JP7199310B2 (ja) | 2019-06-13 | 2019-06-13 | 磁気ディスク装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US10930311B2 (ja) |
JP (1) | JP7199310B2 (ja) |
CN (1) | CN112086110B (ja) |
Families Citing this family (1)
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CN114067847B (zh) * | 2020-08-07 | 2023-08-11 | 株式会社东芝 | 磁盘装置以及磁盘装置的滤波器系数设定方法 |
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JP2013152769A (ja) | 2012-01-24 | 2013-08-08 | Toshiba Corp | 圧電素子駆動方法、圧電素子駆動装置及び磁気ディスク装置 |
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- 2020-01-27 US US16/752,890 patent/US10930311B2/en active Active
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JP2001101812A (ja) | 1999-09-28 | 2001-04-13 | Hitachi Ltd | 磁気ディスク装置 |
JP2001110156A (ja) | 1999-10-12 | 2001-04-20 | Fujitsu Ltd | 二重アクチュエータ制御システムのキャリブレーション方法 |
JP2002288955A (ja) | 2001-03-27 | 2002-10-04 | Matsushita Electric Ind Co Ltd | ヘッド位置決め装置、ヘッド位置決め制御方法、ヘッド位置決め制御プログラム、ヘッド位置決め制御プログラムを記録した記録媒体、およびこれらを用いたディスク装置 |
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JP2004171736A (ja) | 2002-10-28 | 2004-06-17 | Matsushita Electric Ind Co Ltd | ヘッド位置決め制御方法およびこれを用いたディスク装置 |
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Publication number | Publication date |
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JP2020202004A (ja) | 2020-12-17 |
US10930311B2 (en) | 2021-02-23 |
US20200395043A1 (en) | 2020-12-17 |
CN112086110A (zh) | 2020-12-15 |
CN112086110B (zh) | 2021-10-26 |
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