DE19882588T1 - Verfahren zum Implementieren eines linearen diskreten Zeitzustandsraum-Servosteuersystems bei einem digitalen Festkomma-Signalprozessor in einem Plattenlaufwerk - Google Patents

Verfahren zum Implementieren eines linearen diskreten Zeitzustandsraum-Servosteuersystems bei einem digitalen Festkomma-Signalprozessor in einem Plattenlaufwerk

Info

Publication number
DE19882588T1
DE19882588T1 DE19882588T DE19882588T DE19882588T1 DE 19882588 T1 DE19882588 T1 DE 19882588T1 DE 19882588 T DE19882588 T DE 19882588T DE 19882588 T DE19882588 T DE 19882588T DE 19882588 T1 DE19882588 T1 DE 19882588T1
Authority
DE
Germany
Prior art keywords
implementing
control system
disk drive
signal processor
fixed point
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Withdrawn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
DE19882588T
Other languages
English (en)
Inventor
John C Morris
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 DE19882588T1 publication Critical patent/DE19882588T1/de
Withdrawn legal-status Critical Current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
    • G11B5/58—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
    • 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
    • G11B21/106—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 on disks
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
    • G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
    • G05B13/04—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
    • G05B13/042—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators in which a parameter or coefficient is automatically adjusted to optimise the performance
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B21/00—Systems involving sampling of the variable controlled
    • G05B21/02—Systems involving sampling of the variable controlled electric
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B5/00—Anti-hunting arrangements
    • G05B5/01—Anti-hunting arrangements electric
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/28—Speed controlling, regulating, or indicating
    • 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
    • G11B5/5582—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
    • 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
    • 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
    • G11B5/59627—Aligning for runout, eccentricity or offset compensation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Medical Informatics (AREA)
  • Software Systems (AREA)
  • Evolutionary Computation (AREA)
  • Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Feedback Control In General (AREA)
DE19882588T 1997-08-07 1998-05-15 Verfahren zum Implementieren eines linearen diskreten Zeitzustandsraum-Servosteuersystems bei einem digitalen Festkomma-Signalprozessor in einem Plattenlaufwerk Withdrawn DE19882588T1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US5512697P 1997-08-07 1997-08-07
US09/026,457 US6101058A (en) 1997-08-07 1998-02-19 Method of implementing a linear discrete-time state-space servo control system on a fixed-point digital signal processor in a disc drive
PCT/US1998/010135 WO1999008268A1 (en) 1997-08-07 1998-05-15 Method of implementing a linear discrete-time state-space servo control system on a fixed-point digital signal processor in a disc drive

Publications (1)

Publication Number Publication Date
DE19882588T1 true DE19882588T1 (de) 2000-07-13

Family

ID=26701274

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19882588T Withdrawn DE19882588T1 (de) 1997-08-07 1998-05-15 Verfahren zum Implementieren eines linearen diskreten Zeitzustandsraum-Servosteuersystems bei einem digitalen Festkomma-Signalprozessor in einem Plattenlaufwerk

Country Status (7)

Country Link
US (1) US6101058A (de)
JP (1) JP2003517690A (de)
KR (1) KR100430318B1 (de)
CN (1) CN1266526A (de)
DE (1) DE19882588T1 (de)
GB (1) GB2342766B (de)
WO (1) WO1999008268A1 (de)

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US7411752B2 (en) * 1999-02-22 2008-08-12 Seagate Technology Llc Head vibration detection device and method
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CN1367920A (zh) * 1999-06-24 2002-09-04 西加特技术有限责任公司 用于在传动装置饱和时维持伺服稳定性的方法和装置
US6671121B1 (en) * 1999-08-25 2003-12-30 Seagate Technology Llc Minimizing milli-actuator reactive impulse and excessive power current
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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
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US6631046B2 (en) 2000-01-10 2003-10-07 Seagate Technology Llc Servo track writing using extended copying with head offset
US6493177B1 (en) * 2000-03-30 2002-12-10 Seagate Technology Llc Microactuator assisted seek and hysteresis correction method and apparatus for a disk drive
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US6693763B2 (en) 2000-07-26 2004-02-17 Seagate Technology Llc Method for linearizing microactuator hysteresis for a disc drive
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US6930853B2 (en) * 2001-04-17 2005-08-16 Seagate Technology Llc Adaptive seek control for maximum performance with minimal filter corruption
US6970321B2 (en) * 2001-10-23 2005-11-29 Seagate Technology Llc Automatic model regulation in a disc drive servo system using model reference inverse
US7493470B1 (en) 2001-12-07 2009-02-17 Arc International, Plc Processor apparatus and methods optimized for control applications
US7054096B1 (en) * 2002-01-04 2006-05-30 Maxtor Corporation Method and apparatus for determining embedded runout correction values
US7038876B2 (en) * 2002-04-18 2006-05-02 Seagate Technology Llc Control system for a data storage device with constraint
US6924961B1 (en) * 2002-08-30 2005-08-02 Western Digital Technologies, Inc. Method and apparatus for self servowriting of tracks of a disk drive using an observer based on an equivalent one-dimensional state model
US6859346B1 (en) 2002-11-07 2005-02-22 Dallas W. Meyer Integrated bidirectional Recording head micropositioner for magnetic storage devices
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US7218471B2 (en) * 2002-12-05 2007-05-15 Meyer Dallas W Self-servo writing using recording head micropositioner
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Also Published As

Publication number Publication date
CN1266526A (zh) 2000-09-13
JP2003517690A (ja) 2003-05-27
US6101058A (en) 2000-08-08
GB2342766A (en) 2000-04-19
GB0001553D0 (en) 2000-03-15
GB2342766B (en) 2002-01-09
WO1999008268A1 (en) 1999-02-18
KR20010022683A (ko) 2001-03-26
KR100430318B1 (ko) 2004-05-03

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: SEAGATE TECHNOLOGY LLC, SCOTTS VALLEY, CALIF., US

8110 Request for examination paragraph 44
8139 Disposal/non-payment of the annual fee