WO1995016986A3 - Voice coil driven positioner for coarse and fine positioning of magnetic head in multi-track tape drive - Google Patents

Voice coil driven positioner for coarse and fine positioning of magnetic head in multi-track tape drive Download PDF

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Publication number
WO1995016986A3
WO1995016986A3 PCT/US1994/014263 US9414263W WO9516986A3 WO 1995016986 A3 WO1995016986 A3 WO 1995016986A3 US 9414263 W US9414263 W US 9414263W WO 9516986 A3 WO9516986 A3 WO 9516986A3
Authority
WO
WIPO (PCT)
Prior art keywords
voice coil
stator
head
carriage
tape
Prior art date
Application number
PCT/US1994/014263
Other languages
French (fr)
Other versions
WO1995016986A2 (en
Inventor
Ashok B Nayak
Kurt A Buckland
Walter Fehlmann
James Mark Decot
Scott L Hanson
Original Assignee
Conner Peripherals Inc
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 Conner Peripherals Inc filed Critical Conner Peripherals Inc
Priority to KR1019960703097A priority Critical patent/KR100275916B1/en
Priority to AU13391/95A priority patent/AU1339195A/en
Priority to JP51688495A priority patent/JP3736849B2/en
Priority to EP95904879A priority patent/EP0734569A1/en
Publication of WO1995016986A2 publication Critical patent/WO1995016986A2/en
Publication of WO1995016986A3 publication Critical patent/WO1995016986A3/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/035—DC motors; Unipolar motors
    • H02K41/0352—Unipolar motors
    • H02K41/0354—Lorentz force motors, e.g. voice coil motors
    • H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
    • 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
    • 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
    • G05B19/21—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 incremental digital measuring device
    • G05B19/23—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 incremental digital measuring device for point-to-point control
    • 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
    • G05B19/33—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 analogue measuring device
    • G05B19/35—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 analogue measuring device for point-to-point control
    • G05B19/351—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 analogue measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude
    • 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
    • G11B5/5504—Track change, selection or acquisition by displacement of the head across tape tracks
    • 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
    • G11B5/5504—Track change, selection or acquisition by displacement of the head across tape tracks
    • G11B5/5508—Control 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
    • G11B5/58—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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/032—Reciprocating, oscillating or vibrating motors
    • H02P25/034—Voice coil motors
    • 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
    • G05B2219/41355—Electro magnetic coil actuator, voice coil
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection

Abstract

A voice coil driven positioner is provided for positioning the magnetic head of a tape drive relative to the tape of a removable tape cartridge. The head positioner includes a low-mass carriage that supports the head on one end and the voice coil on an opposed second end. A low friction guide mechanism guides the carriage along a precision movement path that carries the head across tracks of a supplied multi-track tape and simultaneously carries the voice coil through a flux field generated by a stator. A movable portion of a position detector is attached to the carriage and located within the hollow of the voice coil for reciprocating into a hollow passageway of the stator together with reciprocation of the voice coil into another hollow of the stator. A fixed portion of the position detector is attached to the stator and located compactly within the hollow passageway of the stator. A programmable lookup table converts measurement signals output by the position detector into pre-calibrated, head-position indicating signals. A platform is provided on the carriage for mounting an interferometer prism used during calibration.
PCT/US1994/014263 1993-12-15 1994-12-13 Voice coil driven positioner for coarse and fine positioning of magnetic head in multi-track tape drive WO1995016986A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019960703097A KR100275916B1 (en) 1993-12-15 1994-12-13 Voice Coil Drive Positioner for Positioning Magnetic Heads in Multitrack Tape Drives
AU13391/95A AU1339195A (en) 1993-12-15 1994-12-13 Voice coil driven positioner for coarse and fine positioning of magnetic head in multi-track tape drive
JP51688495A JP3736849B2 (en) 1993-12-15 1994-12-13 Voice coil drive positioning device for coarse and fine positioning of magnetic head in multi-track tape drive mechanism
EP95904879A EP0734569A1 (en) 1993-12-15 1994-12-13 Voice coil driven positioner for coarse and fine positioning of magnetic head in multi-track tape drive

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16871693A 1993-12-15 1993-12-15
US168,716 1993-12-15

Publications (2)

Publication Number Publication Date
WO1995016986A2 WO1995016986A2 (en) 1995-06-22
WO1995016986A3 true WO1995016986A3 (en) 1995-10-26

Family

ID=22612656

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/014263 WO1995016986A2 (en) 1993-12-15 1994-12-13 Voice coil driven positioner for coarse and fine positioning of magnetic head in multi-track tape drive

Country Status (7)

Country Link
US (2) US5978172A (en)
EP (4) EP1619669B1 (en)
JP (1) JP3736849B2 (en)
KR (1) KR100275916B1 (en)
AU (1) AU1339195A (en)
DE (3) DE69434454T2 (en)
WO (1) WO1995016986A2 (en)

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US6067215A (en) * 1997-10-09 2000-05-23 Seagate Technology, Inc. Magnetic shielding for electromagnetic microactuator
US6411474B1 (en) 1998-06-22 2002-06-25 Hewlett-Packard Co. Carriage and actuator assembly
US6333838B1 (en) 1998-06-22 2001-12-25 Hewlett-Packard Co. Voice coil actuated carriage in which a support structure for the carriage is disposed at least partially within the motor
US6404598B1 (en) * 1998-09-22 2002-06-11 Seagate Technology Llc Flexible circuit routing configuration for a fine/coarse positioner for a tape drive
US6388836B2 (en) * 1998-11-13 2002-05-14 Hewlett-Packard Company Magnetic shield for a tape drive read/write head
US6278247B1 (en) * 1999-06-28 2001-08-21 Tristram Tupper Hyde Multi-resolution drive for actuators
US6229674B1 (en) * 1999-07-29 2001-05-08 Storage Technology Corporation Coarse and fine positioning device employing a single driving mechanism
US6513250B2 (en) * 2000-07-14 2003-02-04 Rensselaer Polytechnic Institute Micro positioning device with shared actuators
US6704261B2 (en) * 2001-01-25 2004-03-09 Dphi Acquisitions, Inc. Spin motor control in an optical drive
US7522480B2 (en) 2001-01-25 2009-04-21 Dphi Acquisitions, Inc. Digital tracking servo system with multi-track seek with an acceleration clamp
US7299146B2 (en) * 2002-06-27 2007-11-20 International Business Machines Corporation Apparatus and method to calibrate a system having an input signal and an output signal
US6839197B2 (en) * 2002-06-27 2005-01-04 International Business Machines Corporation Apparatus and method to calibrate one or more transducers in a noisy environment
US6831806B2 (en) * 2002-06-27 2004-12-14 International Business Machines Corporation Apparatus and method to calibrate a servo sensor
US6833973B2 (en) * 2002-06-27 2004-12-21 International Business Machines Corporation Apparatus and method to calibrate a servo sensor
US7227724B2 (en) * 2003-01-30 2007-06-05 Certance, Llc Head actuator assembly for a tape drive
US7203027B2 (en) * 2004-11-10 2007-04-10 Certance, Llc System and method for measuring the position of a tape drive head
US7230788B2 (en) * 2004-11-10 2007-06-12 Certance, Llc System and method for tape drive control
US7061712B2 (en) * 2004-11-17 2006-06-13 International Business Machines Corporation Mono pole piece for a two stage tape drive actuator
US7274528B2 (en) * 2005-03-17 2007-09-25 Certance Llc System and method for protecting head elements of a tape drive
US7538980B2 (en) * 2005-09-14 2009-05-26 International Business Machines Corporation Actuator assembly
US8059355B2 (en) * 2009-06-08 2011-11-15 Quantum Corporation Dual stage head actuator assembly for tape drive
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
US8780484B2 (en) 2012-08-30 2014-07-15 International Business Machines Corporation Tape friction measurement
US9395511B1 (en) 2014-01-30 2016-07-19 Magnet-Schultz Of America, Inc. Voice coil actuator with integrated LVDT
US10957362B1 (en) 2019-09-11 2021-03-23 International Business Machines Corporation Non-interfering micro-positioning system utilizing piezoelectric elements
US10854236B1 (en) 2019-09-11 2020-12-01 International Business Machines Corporation Dynamic tape guide bearing tilt mechanism
US11056139B2 (en) 2019-09-11 2021-07-06 International Business Machines Corporation Semi-flexible structure for micro-positioning a write/read head
CN111447367B (en) * 2020-05-08 2021-10-19 Oppo广东移动通信有限公司 Voice coil motor, driving method, camera module and computer readable storage medium
CN113098224B (en) * 2021-04-09 2023-02-24 深圳谦腾科技有限公司 Voice coil motor with flexible feeding

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Also Published As

Publication number Publication date
DE69435241D1 (en) 2009-11-12
US5901008A (en) 1999-05-04
JPH09510315A (en) 1997-10-14
EP1306833A2 (en) 2003-05-02
WO1995016986A2 (en) 1995-06-22
EP1619670A1 (en) 2006-01-25
DE69434454T2 (en) 2006-03-30
KR960706672A (en) 1996-12-09
EP1306833B1 (en) 2005-08-10
EP1619669B1 (en) 2009-09-16
EP0734569A1 (en) 1996-10-02
EP1306833A3 (en) 2003-06-11
DE69434454D1 (en) 2005-09-15
AU1339195A (en) 1995-07-03
DE69435238D1 (en) 2009-10-29
EP1619669A1 (en) 2006-01-25
EP1619670B1 (en) 2009-09-30
JP3736849B2 (en) 2006-01-18
US5978172A (en) 1999-11-02
KR100275916B1 (en) 2001-01-15

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