SG100716A1 - Servo control of a coarse actuator - Google Patents

Servo control of a coarse actuator

Info

Publication number
SG100716A1
SG100716A1 SG200103267A SG200103267A SG100716A1 SG 100716 A1 SG100716 A1 SG 100716A1 SG 200103267 A SG200103267 A SG 200103267A SG 200103267 A SG200103267 A SG 200103267A SG 100716 A1 SG100716 A1 SG 100716A1
Authority
SG
Singapore
Prior art keywords
servo control
coarse actuator
coarse
actuator
servo
Prior art date
Application number
SG200103267A
Other languages
English (en)
Inventor
Xuan Bui Nhan
Alexander Koski John
Sasaki Akimitsu
Tsuruta Kazuhiro
Original Assignee
Ibm
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ibm filed Critical Ibm
Publication of SG100716A1 publication Critical patent/SG100716A1/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • 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
    • G11B5/584—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 tapes
SG200103267A 2000-06-09 2001-06-01 Servo control of a coarse actuator SG100716A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/590,673 US6587303B1 (en) 2000-06-09 2000-06-09 Servo control of a coarse actuator

Publications (1)

Publication Number Publication Date
SG100716A1 true SG100716A1 (en) 2003-12-26

Family

ID=24363204

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200103267A SG100716A1 (en) 2000-06-09 2001-06-01 Servo control of a coarse actuator

Country Status (7)

Country Link
US (1) US6587303B1 (de)
JP (1) JP3834786B2 (de)
KR (1) KR100420545B1 (de)
CN (1) CN1257509C (de)
DE (1) DE10123069B4 (de)
MY (1) MY127261A (de)
SG (1) SG100716A1 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001022409A1 (en) * 1999-09-23 2001-03-29 Seagate Technology Llc Method and control scheme for compensating the coarse actuators undesired transients in dual stage control systems
US6721126B1 (en) * 2000-08-16 2004-04-13 International Business Machines Corporation Position identification for a coarse actuator portion of a compound actuator
US6778350B2 (en) * 2000-10-06 2004-08-17 Seagate Technology Llc Feed forward control of voice coil motor induced microactuator disturbance
US6771456B2 (en) * 2001-05-31 2004-08-03 International Business Machines Corporation System and method for miniaturization of read/write heads
JP2005174450A (ja) * 2003-12-10 2005-06-30 Sony Corp リニア型テープストレージ用磁気ヘッド装置
US7061712B2 (en) * 2004-11-17 2006-06-13 International Business Machines Corporation Mono pole piece for a two stage tape drive actuator
US7265935B2 (en) * 2004-12-15 2007-09-04 International Business Machines Corporation Velocity adaptive compensator for a synchronous sampling time-based servo system
US7110212B2 (en) * 2004-12-15 2006-09-19 International Business Machines Corporation Compensator for a synchronous sampling time-base servo system
US8169736B2 (en) 2009-07-17 2012-05-01 International Business Machines Corporation Method and apparatus to position a head module comprising servo elements and a plurality of data elements
US8027121B2 (en) 2009-11-04 2011-09-27 International Business Machines Corporation Positioning coarse servo actuator of tape servo system to allow fine servo actuator to follow tape shift excursions
US8059362B2 (en) * 2010-03-02 2011-11-15 International Business Machines Corporation Positioning a coarse actuator of compound actuator tape servo system at midpoint of maximum peaks of lateral tape movement
US8134797B2 (en) * 2010-03-03 2012-03-13 International Business Machines Corporation Application of continuous position error offset signal to acquire servo track
CN102237101A (zh) * 2010-05-07 2011-11-09 中国科学院上海光学精密机械研究所 滑模变结构伺服控制器及其伺服控制方法
US8611038B2 (en) 2011-06-02 2013-12-17 International Business Machines Corporation System, method, and computer program product for servo compensator switching in high vibration environments
US8526134B2 (en) 2011-06-02 2013-09-03 International Business Machines Corporation System for fast center calibration of a tape drive for a flangeless tape path
US8760788B2 (en) * 2011-06-02 2014-06-24 International Business Machines Corporation System and computer program product for fast recovery to a write state
US8743491B2 (en) * 2012-04-05 2014-06-03 International Business Machines Corporation Variable stopwrite threshold
US8743492B2 (en) * 2012-07-20 2014-06-03 International Business Machines Corporation Variable stopwrite threshold with variable smoothing factor
US8810939B2 (en) 2012-08-28 2014-08-19 International Business Machines Corporation Variable stopwrite threshold using kurtosis
US11049517B1 (en) * 2020-04-17 2021-06-29 Western Digital Technologies, Inc. Data storage device staggering access operations to facilitate concurrent access of two disk surfaces

Citations (4)

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Publication number Priority date Publication date Assignee Title
EP0149888B1 (de) * 1983-12-23 1989-05-24 Magnetic Peripherals Inc. Servosystem für ein Datenaufzeichnungssystem und ein zugehöriges Datenaufzeichnungssystem
US5060210A (en) * 1990-09-28 1991-10-22 International Business Machines Corporation Controlling head seeking speed in disk storage units by limiting displacement of head with respect to its supporting headarm
EP0420439B1 (de) * 1989-09-29 1997-08-13 Seagate Technology International Verfahren und Gerät zum Erfassen der Transduktorlage
WO2000063894A2 (en) * 1999-04-21 2000-10-26 Seagate Technology Llc Dual stage servo controller

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US4864552A (en) * 1986-08-29 1989-09-05 Laser Magnetic Storage International Company Driving signal for coarse servo employing sampled offset signal
US4839876A (en) * 1987-11-23 1989-06-13 International Business Machines Corporation Track seeking using a track following loop
US4935835A (en) * 1988-11-10 1990-06-19 Insite Peripherals, Inc. Magnetic media containing reference feature and methods for referencing magnetic head position to the reference feature
US5090002A (en) 1989-03-07 1992-02-18 International Business Machines Corporation Positioning systems employing velocity and position control loops with position control loop having an extended range
US5038333A (en) * 1989-05-05 1991-08-06 International Business Machines Corporation Positioning systems including reliable track crossing detection for high speed relative motions
JPH0594679A (ja) * 1991-07-22 1993-04-16 Kyocera Corp トラツクアクセス装置
US5235574A (en) * 1991-11-04 1993-08-10 International Business Machines Corporation Optical disk drive relative position sensor
JPH0778891B2 (ja) * 1991-12-25 1995-08-23 インターナショナル・ビジネス・マシーンズ・コーポレイション 光ディスク駆動装置および方法
JPH05198111A (ja) * 1992-01-20 1993-08-06 Fujitsu Ltd ヘッドの位置決め制御装置
DE69318617T2 (de) 1992-04-13 1999-04-15 Imation Corp Vorrichtung zur Kopfpositionierung für Mehrspurbandaufzeichnungsgerät
US5425013A (en) * 1993-11-12 1995-06-13 International Business Machines Corporation Relative position sensing calibration for optical storage device
JP3693795B2 (ja) * 1997-10-02 2005-09-07 富士通株式会社 記憶ディスク装置及びその制御方法
JP3097847B2 (ja) * 1998-06-19 2000-10-10 日本電気株式会社 二段アクチュエータによるヘッド位置決め装置
US6376964B1 (en) * 2001-05-16 2002-04-23 Read-Rite Corporation Collocated rotating flexure microactuator for dual-stage servo in disk drives

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149888B1 (de) * 1983-12-23 1989-05-24 Magnetic Peripherals Inc. Servosystem für ein Datenaufzeichnungssystem und ein zugehöriges Datenaufzeichnungssystem
EP0420439B1 (de) * 1989-09-29 1997-08-13 Seagate Technology International Verfahren und Gerät zum Erfassen der Transduktorlage
US5060210A (en) * 1990-09-28 1991-10-22 International Business Machines Corporation Controlling head seeking speed in disk storage units by limiting displacement of head with respect to its supporting headarm
WO2000063894A2 (en) * 1999-04-21 2000-10-26 Seagate Technology Llc Dual stage servo controller

Also Published As

Publication number Publication date
CN1329335A (zh) 2002-01-02
DE10123069B4 (de) 2012-11-22
DE10123069A8 (de) 2007-05-31
CN1257509C (zh) 2006-05-24
JP3834786B2 (ja) 2006-10-18
US6587303B1 (en) 2003-07-01
DE10123069A1 (de) 2002-03-14
KR20010112065A (ko) 2001-12-20
MY127261A (en) 2006-11-30
KR100420545B1 (ko) 2004-03-02
JP2002015532A (ja) 2002-01-18

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