SG92767A1 - Method and circuit for operating a voice coil actuator of a mass data storage device - Google Patents

Method and circuit for operating a voice coil actuator of a mass data storage device

Info

Publication number
SG92767A1
SG92767A1 SG200007296A SG200007296A SG92767A1 SG 92767 A1 SG92767 A1 SG 92767A1 SG 200007296 A SG200007296 A SG 200007296A SG 200007296 A SG200007296 A SG 200007296A SG 92767 A1 SG92767 A1 SG 92767A1
Authority
SG
Singapore
Prior art keywords
operating
circuit
storage device
data storage
voice coil
Prior art date
Application number
SG200007296A
Other languages
English (en)
Inventor
Du Tan
K Rote John
Original Assignee
Texas Instruments 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 Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of SG92767A1 publication Critical patent/SG92767A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • 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
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Linear Motors (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)
  • Control Of Electric Motors In General (AREA)
SG200007296A 1999-11-30 2000-12-11 Method and circuit for operating a voice coil actuator of a mass data storage device SG92767A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/451,697 US6768977B1 (en) 1999-11-30 1999-11-30 Method and circuit for modeling a voice coil actuator of a mass data storage device
US09/464,315 US7243058B1 (en) 1999-11-30 1999-12-16 Method and circuit for operating a voice coil actuator of a mass data storage device

Publications (1)

Publication Number Publication Date
SG92767A1 true SG92767A1 (en) 2002-11-19

Family

ID=27036490

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200007296A SG92767A1 (en) 1999-11-30 2000-12-11 Method and circuit for operating a voice coil actuator of a mass data storage device

Country Status (5)

Country Link
US (3) US6768977B1 (ko)
JP (1) JP2001211687A (ko)
KR (1) KR100815662B1 (ko)
SG (1) SG92767A1 (ko)
TW (1) TW559787B (ko)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7805622B2 (en) * 2007-01-26 2010-09-28 Emcore Corporation Pluggable transceiver module
JP2009254170A (ja) * 2008-04-08 2009-10-29 Hitachi-Lg Data Storage Inc モータ駆動回路
US7876522B1 (en) 2008-09-30 2011-01-25 Western Digital Technologies, Inc. Disk drive updating estimate of voice coil resistance to account for resistance change prior to unload operation
US8665551B1 (en) 2011-12-22 2014-03-04 Western Digital Technologies, Inc. Disk drive adjusting gain and offset of BEMF velocity sensor during self writing of spiral tracks
CN103294871B (zh) * 2013-06-09 2016-07-06 嘉善恩益迪电声技术服务有限公司 一种扬声器音圈电感非线性特性的数值仿真分析方法
CN106599484A (zh) * 2016-12-16 2017-04-26 重庆大学 基于耦合漏感的四绕组变压器电磁暂态模型建立方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5615064A (en) * 1994-10-03 1997-03-25 International Business Machines Corporation Pulsed current velocity controlled head load method and apparatus which uses the back EMF to control the generation of head actuator driving pulses
US5654840A (en) * 1994-06-30 1997-08-05 Western Digital Corporation Hard disk drive which uses the back EMF of the actuator to detect shocks
US5838515A (en) * 1996-04-30 1998-11-17 Quantum Corporation PWM/linear driver for disk drive voice coil actuator

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US4495466A (en) * 1982-04-08 1985-01-22 The United States Of America As Represented By The Secretary Of The Air Force Eddy current test probe with circumferential Segments and method of testing material surrounding fastener holes
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
US4653681A (en) * 1985-05-16 1987-03-31 Kulicke And Soffa Industries, Inc. Voice coil actuated fine wire clamp
DE3702680A1 (de) * 1986-02-18 1987-10-29 Bosch Gmbh Robert Verfahren und schaltung zur ansteuerung von elektromagnetischen verbrauchern
JPH0640423B2 (ja) * 1986-10-13 1994-05-25 富士通株式会社 情報記憶装置の位置決め制御方式
AU597537B2 (en) * 1986-11-10 1990-05-31 Seagate Technology, Inc. Bipolar motor control
US5084640A (en) * 1987-03-02 1992-01-28 Unisys Corporation Eddy current brake with N impedence gaps
US5206555A (en) * 1987-03-02 1993-04-27 Unisys Corp. Adjustable brake for magnetic actuator
JPS63274386A (ja) * 1987-04-30 1988-11-11 Toshiba Corp 磁気デイスク装置の制御装置
US4841393A (en) * 1987-11-02 1989-06-20 Seagate Technology, Inc. Spindle motor for a disc drive
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US5191297A (en) * 1991-07-25 1993-03-02 Iomega Corporation Transconductance amplifier having sensfets which drive a load with linearly proportional current
EP0537916A2 (en) 1991-10-18 1993-04-21 Seagate Technology International A circuit for controlling an actuator arm in a disk drive system
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GB9206012D0 (en) * 1992-03-19 1992-04-29 Astec Int Ltd Mosfet gate drive circuit
US5465035A (en) * 1993-05-11 1995-11-07 Quantum Corporation Band limited control of a flexible structure using piecewise trigonometric input signals
JP3267046B2 (ja) * 1994-04-21 2002-03-18 株式会社日立製作所 磁気記憶装置
US5455723A (en) * 1994-06-02 1995-10-03 International Business Machines Corporation Method and apparatus for ramp load and unload
US5566369A (en) 1994-12-29 1996-10-15 Sgs-Thomson Microelectronics, Inc. Controlled velocity head parking circuit
KR100260407B1 (ko) * 1995-06-17 2000-07-01 윤종용 하드 디스크 구동장치의 액츄에이터 어셈블리
US6026286A (en) * 1995-08-24 2000-02-15 Nortel Networks Corporation RF amplifier, RF mixer and RF receiver
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US5768045A (en) 1995-12-20 1998-06-16 Western Digital Corporation Hardware velocity limit control system
US5663873A (en) * 1996-02-26 1997-09-02 Electronic Measurements, Inc. Bias power having a gapped transformer component
US6208497B1 (en) * 1997-06-26 2001-03-27 Venture Scientifics, Llc System and method for servo control of nonlinear electromagnetic actuators
US6166500A (en) * 1997-07-18 2000-12-26 Siemens Canada Limited Actively controlled regenerative snubber for unipolar brushless DC motors
US5929652A (en) * 1997-09-02 1999-07-27 Midwest Research Institute Apparatus for measuring minority carrier lifetimes in semiconductor materials
US6204629B1 (en) * 1997-11-21 2001-03-20 Texas Instruments Incorporated Method and apparatus for accurately measuring a back-emf voltage on an actuator coil
JP3667069B2 (ja) * 1997-12-25 2005-07-06 株式会社荏原製作所 無軸受回転機械
JP3575264B2 (ja) * 1998-01-27 2004-10-13 Ｊｆｅスチール株式会社 流速測定方法及び装置
US5982130A (en) * 1998-08-13 1999-11-09 Unitrolde Corporation Calibration technique to remove series resistance errors in the sensed back EMF of a motor
US6081112A (en) 1998-08-17 2000-06-27 Stmicroelectronics, Inc. Method and circuit for determining the velocity of a data detector mechanism of a mass storage device, or the like, using a BEMF voltage in the associated voice coil
US6373650B1 (en) * 1998-08-20 2002-04-16 Stmicroelectronics, Inc. Voice coil motor control circuit having alternative modes of operation and method of operation thereof
US6271636B1 (en) * 1998-09-14 2001-08-07 Seagate Technology Llc Servo control system and method for a data storage device with improved braking
US6072383A (en) * 1998-11-04 2000-06-06 Checkpoint Systems, Inc. RFID tag having parallel resonant circuit for magnetically decoupling tag from its environment
US6094020A (en) 1998-11-18 2000-07-25 Western Digital Corporation Disk drive utilizing Bemf of spindle motor to increase VCM voltage during seeks
US6184645B1 (en) * 1999-09-02 2001-02-06 Texas Instruments Incorporated Voltage mode drive for control circuit for an actuator using sampled back EMF control

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5654840A (en) * 1994-06-30 1997-08-05 Western Digital Corporation Hard disk drive which uses the back EMF of the actuator to detect shocks
US5615064A (en) * 1994-10-03 1997-03-25 International Business Machines Corporation Pulsed current velocity controlled head load method and apparatus which uses the back EMF to control the generation of head actuator driving pulses
US5838515A (en) * 1996-04-30 1998-11-17 Quantum Corporation PWM/linear driver for disk drive voice coil actuator

Also Published As

Publication number Publication date
US7243058B1 (en) 2007-07-10
US20020128808A1 (en) 2002-09-12
KR100815662B1 (ko) 2008-03-20
JP2001211687A (ja) 2001-08-03
US6768977B1 (en) 2004-07-27
TW559787B (en) 2003-11-01
KR20010062462A (ko) 2001-07-07

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