GB1486121A - Servomechanisms - Google Patents

Servomechanisms

Info

Publication number
GB1486121A
GB1486121A GB9301/75A GB930175A GB1486121A GB 1486121 A GB1486121 A GB 1486121A GB 9301/75 A GB9301/75 A GB 9301/75A GB 930175 A GB930175 A GB 930175A GB 1486121 A GB1486121 A GB 1486121A
Authority
GB
United Kingdom
Prior art keywords
track
output
disc
error signal
subtractor
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
Application number
GB9301/75A
Other languages
English (en)
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1486121A publication Critical patent/GB1486121A/en
Expired legal-status Critical Current

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
    • 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
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
    • G05B19/27—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an absolute digital measuring device
    • G05B19/29—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an absolute digital measuring device for point-to-point control
    • G05B19/291—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an absolute digital measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude
    • 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
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/416—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control of velocity, acceleration or deceleration
    • G05B19/4163—Adaptive control of feed or cutting velocity
    • 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
    • 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
    • G11B5/59677—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 with optical servo tracking
    • 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
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/41—Servomotor, servo controller till figures
    • G05B2219/41363—Excess in error, error too large, follow up error
    • 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)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Position Or Direction (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
GB9301/75A 1974-05-28 1975-03-06 Servomechanisms Expired GB1486121A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US473459A US3881184A (en) 1974-05-28 1974-05-28 Adaptive digital servo system

Publications (1)

Publication Number Publication Date
GB1486121A true GB1486121A (en) 1977-09-21

Family

ID=23879614

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9301/75A Expired GB1486121A (en) 1974-05-28 1975-03-06 Servomechanisms

Country Status (5)

Country Link
US (1) US3881184A (US08124630-20120228-C00152.png)
JP (1) JPS50153191A (US08124630-20120228-C00152.png)
DE (1) DE2514103A1 (US08124630-20120228-C00152.png)
FR (1) FR2273340B1 (US08124630-20120228-C00152.png)
GB (1) GB1486121A (US08124630-20120228-C00152.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2381938A (en) * 2001-09-03 2003-05-14 Samsung Electronics Co Ltd Compensating for eccentricity of an optical disc

Families Citing this family (63)

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US3956766A (en) * 1974-11-25 1976-05-11 International Business Machines Corporation Counter resetting circuitry for magnetic disk system
JPS5280007A (en) * 1975-12-26 1977-07-05 Sony Corp Video disc
GB1576426A (en) * 1976-03-19 1980-10-08 Rca Corp Eccentricity compensating system in recording and playbackapparatus
GB1577133A (en) * 1976-03-19 1980-10-22 Rca Corp Video information record and playback apparatus
US4135217A (en) * 1976-11-02 1979-01-16 Xerox Corporation Utilization of stored run-out information in a track following servo system
US4087842A (en) * 1976-11-05 1978-05-02 Graham Magnetics Inc. Recording track eccentricity compensation method and means
JPS5953727B2 (ja) * 1977-04-06 1984-12-26 株式会社日立製作所 補正回路付ｄａ変換器
US4200827A (en) * 1977-06-29 1980-04-29 International Business Machines Corporation Positioning system employing feedforward and feedback control
US4133011A (en) * 1977-12-23 1979-01-02 International Business Machines Corporation Sampled data positioning system employing a model of the physical system for time optimal control
DE2759066A1 (de) * 1977-12-30 1979-07-12 Ibm Deutschland Einrichtung fuer die regelung der magnetkopfposition waehrend der spurauswahl und der spurfolge des magnetkopfes eines magnetplattenspeichers
GB2039078B (en) * 1978-12-27 1982-11-24 Ibm Sampled data servo positioning system
JPS55100744A (en) * 1979-01-29 1980-07-31 Hitachi Ltd Da converter with correction circuit
US4359763A (en) * 1979-03-12 1982-11-16 Exxon Research And Engineering Co. Floppy disc drive
US4275426A (en) * 1979-03-12 1981-06-23 Exxon Research & Engineering Co. Floppy disc drive
DE3009548A1 (de) * 1980-03-13 1981-09-24 Ibm Deutschland Gmbh, 7000 Stuttgart Spurnachlaufsteuerung fuer magnetkoepfe sowie verfahren zur kompensation gleichfoermiger stoergroessen
JPS57127970A (en) * 1981-01-30 1982-08-09 Victor Co Of Japan Ltd Feed pulse generating circuit
US4462053A (en) * 1981-07-02 1984-07-24 Irwin International, Inc. Method for controlling a disc head
US4536809A (en) * 1982-05-10 1985-08-20 Digital Equipment Corporation Adaptive misposition correcting method and apparatus for magnetic disk servo system
JPS5940378A (ja) * 1982-08-31 1984-03-06 Toshiba Corp デイスク装置
JPS5984379A (ja) * 1982-11-08 1984-05-16 Nec Corp デイスク状記録担体のトラツクアクセス装置
US4551776A (en) * 1982-12-20 1985-11-05 International Business Machines Corporation Automatic reference adjustment for position error signal on disk file servo system
US4575776A (en) * 1982-12-20 1986-03-11 International Business Machines Corporation Magnetic recording disk file servo control system including an actuator model for generating a simulated head position error signal
JPS59185019A (ja) * 1983-04-04 1984-10-20 Nec Corp 特殊再生装置
DE3572070D1 (en) * 1984-12-19 1989-09-07 Toshiba Kk Tracking control system for optical record disc information reproducing apparatus
US4616276A (en) * 1985-07-16 1986-10-07 International Business Machines Corporation Disk file servo control system with fast reduction of repeatable head position error
US4779253A (en) * 1985-07-30 1988-10-18 Laser Magnetic Storage International Company Sampled servo for an optical disk drive
EP0229891A3 (en) * 1985-10-22 1988-08-17 Nec Corporation Head positioning system for floppy disk drives
US4974109A (en) * 1986-08-27 1990-11-27 Sony Corporation Hard disk drive employing a reference track to compensate for tracking error
USRE35302E (en) * 1986-08-27 1996-07-23 Sony Corporation Magnetic disc apparatus
DE3632465A1 (de) * 1986-09-24 1988-03-31 Siemens Ag Verfahren und einrichtung zum aufzeichnen einer kreisrunden spur auf einer datenspeicherplatte
NL8702261A (nl) * 1987-09-23 1989-04-17 Philips Nv Informatie opteken en/of uitlees systeem, alsmede een registratiedrager en opteken en/of uitleesinrichting voor toepassing in een dergelijk systeem.
JP2551043B2 (ja) * 1987-10-31 1996-11-06 ソニー株式会社 トラッキング制御装置
JP2595631B2 (ja) * 1988-03-17 1997-04-02 日本ビクター株式会社 記録再生素子の位置制御方式
JPH03225679A (ja) * 1990-01-31 1991-10-04 Sony Corp デイスクドライブ装置
US5227930A (en) * 1990-07-20 1993-07-13 Quantum Corporation Head position recalibration for disk drive
DE69130762T2 (de) * 1990-09-18 1999-09-09 Rodime Plc Digitale servosteuerung für ein plattenlaufwerk
EP0510214B1 (en) * 1990-11-14 1996-08-28 Matsushita Electric Industrial Co., Ltd. Optical disc device
JP2611049B2 (ja) * 1991-02-06 1997-05-21 富士通株式会社 追従制御装置の整定監視方式
DE4104017A1 (de) * 1991-02-09 1992-08-13 Thomson Brandt Gmbh Verfahren zum lesen von daten von einem rotierenden plattenfoermigen aufzeichnungstraeger
US5317713A (en) * 1991-09-19 1994-05-31 Quantum Corporation Micro-winchester disk drive having on-board segmented cache memory
US5257252A (en) * 1991-12-18 1993-10-26 Hewlett-Packard Company Adaptive control system for a disk drive actuator
US5245830A (en) * 1992-06-03 1993-09-21 Lockheed Missiles & Space Company, Inc. Adaptive error correction control system for optimizing stirling refrigerator operation
US5444583A (en) * 1992-09-30 1995-08-22 Quantum Corporation Disk drive having on-board triggered digital sampling analyzer
JP2720012B2 (ja) * 1993-09-27 1998-02-25 ブラウン ポール−ビルヘルム エンコーダ
US5612833A (en) * 1994-12-02 1997-03-18 International Business Machines Corporation Radial self-propagation pattern generation for disk file servowriting
SG70001A1 (en) * 1994-12-02 2000-01-25 Ibm Radial self-propagation pattern generation for disk file servowriting
US5793559A (en) * 1996-02-27 1998-08-11 Quantum Corporation In drive correction of servo pattern errors
US5784296A (en) * 1996-04-30 1998-07-21 Quantum Corporation Method and apparatus for spectral analysis in a disk recording system
US5742573A (en) * 1996-05-03 1998-04-21 Eastman Kodak Company Compensation apparatus for radial and vertical runout of an optical disc
US5875064A (en) 1996-07-09 1999-02-23 International Business Machines Corporation Method and system for accurate self-servowriting with normalization in a disk drive
US5793554A (en) * 1996-07-09 1998-08-11 International Business Machines Corporation Self-servowriting system with dynamic error propagation reduction
US6137753A (en) * 1997-04-14 2000-10-24 Oak Technology, Inc. Runout calibration for disc drive system
US6002541A (en) * 1997-06-30 1999-12-14 International Business Machines Corporation Method and apparatus for providing a linear position error sensing (PES) signal
US6064542A (en) * 1997-08-08 2000-05-16 Quantum Corporation Methods and apparatus for positioning read/write head in a computer disk drive
US6101064A (en) * 1997-08-08 2000-08-08 Quantum Corporation Methods and apparatus for efficiently controlling a read/write head in a computer disk drive
US6411459B1 (en) 1999-02-22 2002-06-25 Seagate Technology Llc Advanced servo writing method for hard disc drives
US6992853B2 (en) * 2003-07-24 2006-01-31 Hitachi Global Storage Technologies Netherlands B.V Method and apparatus for determining modulated, amplitude ramping RRO harmonics in multi-screw clamped HDD disk/spind assembly
WO2005024819A1 (en) * 2003-09-09 2005-03-17 Koninklijke Philips Electronics N.V. Management of use of information that is recorded on an optical disk
US7142387B2 (en) * 2004-11-05 2006-11-28 Samsung Electronics Co., Ltd. Method and apparatus positioning a read head to follow a track in a hard disk drive
WO2006067666A2 (en) * 2004-12-20 2006-06-29 Koninklijke Philips Electronics N.V. An information reproducing method
JP4411428B2 (ja) * 2006-03-31 2010-02-10 東芝ストレージデバイス株式会社 ヘッド位置制御方法、ヘッド位置制御装置およびディスク装置
JP2009110597A (ja) * 2007-10-30 2009-05-21 Hitachi Global Storage Technologies Netherlands Bv ディスク装置およびその制御方法
US11257517B1 (en) * 2021-06-14 2022-02-22 Western Digital Technologies, Inc. Data storage device seeking multiple actuators to improve performance

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US3699555A (en) * 1970-10-23 1972-10-17 Zerox Corp Apparatus for rapid action displacement control
US3737883A (en) * 1971-08-18 1973-06-05 Information Storage Systems Linear positioning apparatus for memory disc pack drive mechanisms
US3800317A (en) * 1972-07-31 1974-03-26 Caelus Memories Inc Servo system and method for positioning an element at precisely spaced positions

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2381938A (en) * 2001-09-03 2003-05-14 Samsung Electronics Co Ltd Compensating for eccentricity of an optical disc
GB2381938B (en) * 2001-09-03 2004-05-19 Samsung Electronics Co Ltd Apparatus and method for removing disturbance in a recording medium drive system
US7116607B2 (en) 2001-09-03 2006-10-03 Samsung Electronics Co., Ltd. Apparatus and method of removing disturbances during optical recording and/or reproducing

Also Published As

Publication number Publication date
US3881184A (en) 1975-04-29
FR2273340A1 (US08124630-20120228-C00152.png) 1975-12-26
DE2514103A1 (de) 1975-12-18
FR2273340B1 (US08124630-20120228-C00152.png) 1977-04-15
JPS50153191A (US08124630-20120228-C00152.png) 1975-12-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee