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GB2363248A - PQ enhanced dual stage servo controller - Google Patents

PQ enhanced dual stage servo controller

Info

Publication number
GB2363248A
GB2363248A GB0123529A GB0123529A GB2363248A GB 2363248 A GB2363248 A GB 2363248A GB 0123529 A GB0123529 A GB 0123529A GB 0123529 A GB0123529 A GB 0123529A GB 2363248 A GB2363248 A GB 2363248A
Authority
GB
United Kingdom
Prior art keywords
signal
profile
servo controller
proportional integrator
target track
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.)
Withdrawn
Application number
GB0123529A
Other versions
GB0123529D0 (en
Inventor
Travis E Ell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seagate Technology LLC
Original Assignee
Seagate Technology LLC
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 Seagate Technology LLC filed Critical Seagate Technology LLC
Publication of GB0123529D0 publication Critical patent/GB0123529D0/en
Publication of GB2363248A publication Critical patent/GB2363248A/en
Withdrawn legal-status Critical Current

Links

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
    • 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

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)

Abstract

A servo controller (250) controls the servo system in a disc drive (110). A proportional integrator component (166) receives the target track signal indicative of a target track and a measured track signal indicative of actual or measured data head position. During seek mode, the proportional integrator (166) provides an output signal based on the measured track signal and the target track signal. A profile generator component (170) provides a profile signal based on the output signal from the proportional integrator (166). A coarse actuator (120) is driven based on the profile signal. A filter component (252) is coupled to the profile generator (170) and filters the profile signal to provide a filtered profile signal. The fine actuator (127) is driven based on the filtered profile signal.
GB0123529A 1999-04-21 2000-04-20 PQ enhanced dual stage servo controller Withdrawn GB2363248A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US13031099P 1999-04-21 1999-04-21
US13775299P 1999-06-04 1999-06-04
PCT/US2000/010572 WO2000063894A2 (en) 1999-04-21 2000-04-20 Dual stage servo controller

Publications (2)

Publication Number Publication Date
GB0123529D0 GB0123529D0 (en) 2001-11-21
GB2363248A true GB2363248A (en) 2001-12-12

Family

ID=26828355

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0123529A Withdrawn GB2363248A (en) 1999-04-21 2000-04-20 PQ enhanced dual stage servo controller

Country Status (5)

Country Link
JP (1) JP2002542558A (en)
KR (1) KR20010111511A (en)
CN (1) CN1357137A (en)
GB (1) GB2363248A (en)
WO (1) WO2000063894A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6587303B1 (en) * 2000-06-09 2003-07-01 International Business Machines Corporation Servo control of a coarse actuator
JP5093490B2 (en) * 2008-05-20 2012-12-12 日立オートモティブシステムズ株式会社 Suspension control device
JP2018045740A (en) * 2016-09-12 2018-03-22 株式会社東芝 Disk device manufacturing method and disk device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5452275A (en) * 1991-07-04 1995-09-19 Mitsubishi Denki Kabushiki Kaisha Two-stage actuator control device
US5510939A (en) * 1992-07-16 1996-04-23 Micropolis Corporation Disk drive with adaptive positioning
US5883749A (en) * 1995-11-07 1999-03-16 Samsung Electronics Co., Ltd. Technique for initializing hard disk drive
EP0924689A2 (en) * 1997-12-17 1999-06-23 Texas Instruments Incorporated Control apparatus and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5452275A (en) * 1991-07-04 1995-09-19 Mitsubishi Denki Kabushiki Kaisha Two-stage actuator control device
US5510939A (en) * 1992-07-16 1996-04-23 Micropolis Corporation Disk drive with adaptive positioning
US5883749A (en) * 1995-11-07 1999-03-16 Samsung Electronics Co., Ltd. Technique for initializing hard disk drive
EP0924689A2 (en) * 1997-12-17 1999-06-23 Texas Instruments Incorporated Control apparatus and method

Also Published As

Publication number Publication date
WO2000063894A2 (en) 2000-10-26
CN1357137A (en) 2002-07-03
KR20010111511A (en) 2001-12-19
GB0123529D0 (en) 2001-11-21
WO2000063894B1 (en) 2001-01-18
WO2000063894A3 (en) 2001-01-04
JP2002542558A (en) 2002-12-10

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)