DE68919624D1 - Digitale Servosteuerung für Plattenspeicher. - Google Patents

Digitale Servosteuerung für Plattenspeicher.

Info

Publication number
DE68919624D1
DE68919624D1 DE68919624T DE68919624T DE68919624D1 DE 68919624 D1 DE68919624 D1 DE 68919624D1 DE 68919624 T DE68919624 T DE 68919624T DE 68919624 T DE68919624 T DE 68919624T DE 68919624 D1 DE68919624 D1 DE 68919624D1
Authority
DE
Germany
Prior art keywords
disk storage
servo control
digital servo
digital
disk
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 - Fee Related
Application number
DE68919624T
Other languages
English (en)
Other versions
DE68919624T2 (de
Inventor
James Chien-Chiung Chen
Shih Ming Shih
Mantle Man-Hon Yu
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
Application granted granted Critical
Publication of DE68919624D1 publication Critical patent/DE68919624D1/de
Publication of DE68919624T2 publication Critical patent/DE68919624T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • G11B5/5556—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 with track following after a "seek"
    • G11B5/556—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 with track following after a "seek" control circuits therefor
    • 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
DE68919624T 1988-09-26 1989-09-21 Digitale Servosteuerung für Plattenspeicher. Expired - Fee Related DE68919624T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/249,619 US4914644A (en) 1988-09-26 1988-09-26 Disk file digital servo control system with coil current modeling

Publications (2)

Publication Number Publication Date
DE68919624D1 true DE68919624D1 (de) 1995-01-12
DE68919624T2 DE68919624T2 (de) 1995-05-24

Family

ID=22944289

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68919624T Expired - Fee Related DE68919624T2 (de) 1988-09-26 1989-09-21 Digitale Servosteuerung für Plattenspeicher.

Country Status (4)

Country Link
US (1) US4914644A (de)
EP (1) EP0361786B1 (de)
JP (1) JP2543193B2 (de)
DE (1) DE68919624T2 (de)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
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JP2657561B2 (ja) * 1990-02-09 1997-09-24 富士通株式会社 位置決め制御方式
WO1992005543A1 (en) * 1990-09-18 1992-04-02 Ronald James Kadlec Digital servo control system for use in disk drives
EP0480419B1 (de) * 1990-10-11 1997-07-23 Canon Kabushiki Kaisha Positionierungsvorrichtung
US5426545A (en) * 1991-05-09 1995-06-20 Sidman; Michael D. Active disturbance compensation system for disk drives
US5444583A (en) * 1992-09-30 1995-08-22 Quantum Corporation Disk drive having on-board triggered digital sampling analyzer
US5477103A (en) * 1993-06-04 1995-12-19 Cirrus Logic, Inc. Sequence, timing and synchronization technique for servo system controller of a computer disk mass storage device
US5576910A (en) * 1993-06-04 1996-11-19 Cirrus Logic, Inc. Burst comparison and sequential technique for determining servo control in a mass storage disk device
JP3545049B2 (ja) * 1993-06-22 2004-07-21 エスティーマイクロエレクトロニクス，インコーポレイテッド 電源エネルギ障害時の逆起電力整流電圧
US5384524A (en) * 1993-09-02 1995-01-24 Cirrus Logic, Inc. Voice coil motor control circuit and method for servo system control in a computer mass storage device
KR0128040B1 (ko) * 1993-11-27 1998-04-04 김광호 디스크 기록 매체를 이용하는 데이타 저장장치의 디지탈 서보제어장치 및 방법
US5956201A (en) * 1994-01-14 1999-09-21 Seagate Technology, Inc. Disk file head positioning servo system incorporating adaptive saturated seek and head offset compensation
JP3134657B2 (ja) * 1994-03-18 2001-02-13 株式会社日立製作所 磁気ディスク装置
US5473550A (en) * 1994-03-21 1995-12-05 Seagate Technology, Inc. Fast calibration using microsteps
US5576909A (en) * 1995-02-16 1996-11-19 Ministor Peripherals International Limited Method for positioning a data transducer head in a rotating disk drive data storage device
US5617536A (en) * 1995-03-02 1997-04-01 International Business Machines Corporation Method and apparatus for servo control with error detection of gray (pennington) code used for servo track ID
KR100277073B1 (ko) * 1995-07-24 2001-01-15 윤종용 자기 디스크 구동장치에서 자기 헤드의 속도 및 위치 추정기
KR0162607B1 (ko) * 1995-12-20 1999-01-15 김광호 보이스코일모터 구동 제어회로
US5684653A (en) * 1996-01-16 1997-11-04 Hewlett-Packard Company Method and apparatus for minimizing seek time in a disk drive by increasing power amplifier power based on power amplifier voltage head room
KR100260411B1 (ko) * 1996-04-30 2000-07-01 윤종용 하드디스크 드라이브에 있어서 바이어스테이블 최소화를 위한 서보제어 장치 및 방법
US5838515A (en) * 1996-04-30 1998-11-17 Quantum Corporation PWM/linear driver for disk drive voice coil actuator
US6097564A (en) * 1996-06-05 2000-08-01 Mobile Storage Technology Inc. Method for precise velocity feedback control in an actuator system of a disk drive
US5793558A (en) * 1996-06-05 1998-08-11 Western Digital Corporation Method for seek time optimization employing voice-coil motor current saturation level to define an adaptive deceleration profile
US5898286A (en) * 1997-01-13 1999-04-27 International Business Machines Corporation Digital servo control system for a data recording disk file with improved saturation modelling
US6088188A (en) * 1997-02-10 2000-07-11 International Business Machines Corporation System and method for determining when hard disk drive power amplifier is saturated
US6122135A (en) * 1997-12-19 2000-09-19 Western Digital Corporation Disk drive with voice coil motor rise time manager
US6304406B1 (en) 1998-06-05 2001-10-16 Seagate Technology Llc Rotational vibration compensation using a fixed head and a constant frequency pattern
US6088185A (en) * 1998-06-05 2000-07-11 Seagate Technology, Inc. Rotational vibration detection using a velocity sense coil
US6285522B1 (en) 1998-06-05 2001-09-04 Seagate Technology Llc Rotational vibration compensation using a dedicated surface with a constant frequency pattern
US6222336B1 (en) 1998-06-05 2001-04-24 Seagate Technology Llc Rotational vibration detection using spindle motor velocity sense coils
US6140791A (en) * 1999-06-10 2000-10-31 Samsung Information Systems America Method and apparatus for controlling the acceleration trajectory of positioning a high-velocity transducer and for reducing the harmonic content thereof
WO2001008155A1 (en) * 1999-07-23 2001-02-01 Seagate Technology Llc Pq enhanced observer based dual stage servo controller
US6594106B1 (en) 1999-10-29 2003-07-15 International Business Machines Corporation Adaptive servo estimator and compensator for coil and carriage deformation in voice coil motor driven hard disk drive
US6930853B2 (en) * 2001-04-17 2005-08-16 Seagate Technology Llc Adaptive seek control for maximum performance with minimal filter corruption
US7319570B2 (en) * 2005-09-19 2008-01-15 Seagate Technology Llc Random vibration and shock compensator using a disturbance observer
US7558016B1 (en) 2007-04-20 2009-07-07 Western Digital Technologies, Inc. Disk drive servo control techniques for predicting an off-track condition utilizing an estimation filter
US7800857B1 (en) 2009-04-30 2010-09-21 Western Digital Technologies, Inc. Disk drive calibrating voice coil resistance for velocity control of voice coil motor

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Publication number Priority date Publication date Assignee Title
US331987A (en) * 1885-12-08 Wire-nail machine
US679103A (en) * 1901-05-01 1901-07-23 Francis X Blumle Summer-house.
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
JPS5564661A (en) * 1978-11-08 1980-05-15 Toshiba Corp Self-compensator for magnetic disk memory unit
GB2039078B (en) * 1978-12-27 1982-11-24 Ibm Sampled data servo positioning system
GB2078030B (en) * 1980-06-14 1983-02-02 Burroughs Corp Protected servomechanism
NL8005402A (nl) * 1980-09-29 1982-04-16 Thomassen & Drijver Werkwijze voor het aan een voorgevormd metalen deksel van een naar buiten uitgestulpte omtreksrand.
US4412161A (en) * 1981-04-24 1983-10-25 Iomega Corporation Digital control of servo circuit
JPS6129471A (ja) * 1984-07-19 1986-02-10 Fujitsu Ltd 磁気ヘツドの位置決め速度制御方式
JPH0833771B2 (ja) * 1985-11-26 1996-03-29 日本電信電話株式会社 アクチユエ−タのアクセス制御方法
US4679103A (en) * 1986-04-29 1987-07-07 International Business Machines Corporation Digital servo control system for a data recording disk file
US4697127A (en) * 1986-06-09 1987-09-29 International Business Machines Corporation Adaptive control technique for a dynamic system
US4835632A (en) * 1987-09-16 1989-05-30 International Business Machines Corporation Disk file digital servo control system with multiple sampling rate

Also Published As

Publication number Publication date
EP0361786A3 (en) 1990-09-05
DE68919624T2 (de) 1995-05-24
EP0361786A2 (de) 1990-04-04
EP0361786B1 (de) 1994-11-30
JP2543193B2 (ja) 1996-10-16
US4914644A (en) 1990-04-03
JPH0294079A (ja) 1990-04-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee