DE69014214D1 - Servopositionierschaltungsanordnung. - Google Patents

Servopositionierschaltungsanordnung.

Info

Publication number
DE69014214D1
DE69014214D1 DE69014214T DE69014214T DE69014214D1 DE 69014214 D1 DE69014214 D1 DE 69014214D1 DE 69014214 T DE69014214 T DE 69014214T DE 69014214 T DE69014214 T DE 69014214T DE 69014214 D1 DE69014214 D1 DE 69014214D1
Authority
DE
Germany
Prior art keywords
positioning circuitry
servo positioning
servo
circuitry
positioning
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
DE69014214T
Other languages
English (en)
Other versions
DE69014214T2 (de
Inventor
Shuichi Hashimoto
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of DE69014214D1 publication Critical patent/DE69014214D1/de
Application granted granted Critical
Publication of DE69014214T2 publication Critical patent/DE69014214T2/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
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • G11B5/553—Details
    • G11B5/5547—"Seek" control and 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
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • G11B21/085—Access to indexed tracks or parts of continuous track on discs with track following of accessed part
DE69014214T 1989-01-10 1990-01-08 Servopositionierschaltungsanordnung. Expired - Fee Related DE69014214T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1003187A JPH0736130B2 (ja) 1989-01-10 1989-01-10 サーボ位置決め回路

Publications (2)

Publication Number Publication Date
DE69014214D1 true DE69014214D1 (de) 1995-01-05
DE69014214T2 DE69014214T2 (de) 1995-04-06

Family

ID=11550400

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69014214T Expired - Fee Related DE69014214T2 (de) 1989-01-10 1990-01-08 Servopositionierschaltungsanordnung.

Country Status (6)

Country Link
US (1) US5173647A (de)
EP (1) EP0378328B1 (de)
JP (1) JPH0736130B2 (de)
KR (1) KR930007460B1 (de)
AU (1) AU612068B2 (de)
DE (1) DE69014214T2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5204932A (en) * 1989-01-10 1993-04-20 Fujitsu Limited Servo circuit for magnetic disk apparatus
DE69227434T2 (de) * 1991-11-22 1999-03-18 Fujitsu Ltd Positionsregelsystem
JPH05228794A (ja) * 1992-02-14 1993-09-07 Fanuc Ltd 主軸位置決め方式
DE69414012T2 (de) * 1993-01-19 1999-06-24 Canon Kk Aufzeichnungsgerät
US5517099A (en) * 1993-06-15 1996-05-14 International Modern Technologies, Inc. Method and apparatus for robust integral-pulse control of a servodrive of unknown dynamics
KR100277073B1 (ko) * 1995-07-24 2001-01-15 윤종용 자기 디스크 구동장치에서 자기 헤드의 속도 및 위치 추정기
KR100223633B1 (ko) * 1996-12-31 1999-10-15 윤종용 하드 디스크 드라이브에서 헤드속도 측정을 이용한 안정 기록방법
US6707269B2 (en) * 2001-09-11 2004-03-16 Seagate Technology Llc Motor control circuit with adaptive dynamic range selection

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883894A (en) * 1973-10-19 1975-05-13 Storage Disk Corp Disk drive servo system
US4096425A (en) * 1974-09-19 1978-06-20 Ferranti Limited Servo systems
US4184108A (en) * 1977-11-23 1980-01-15 Sperry Rand Corporation Self-regulating electronic tachometer
JPS54126515A (en) * 1978-03-24 1979-10-01 Nippon Shiyuuhenki Kk Magnetic disc apparatus
US4237502A (en) * 1979-07-10 1980-12-02 Per Sci, Inc. Disk drive system
US4288731A (en) * 1980-02-22 1981-09-08 Sperry Corporation Average value tachometer for a disc drive servo and the like
JPS58150171A (ja) * 1982-03-02 1983-09-06 Matsushita Electric Ind Co Ltd ディスク装置の制御装置
EP0097208B1 (de) * 1982-06-18 1987-03-11 International Business Machines Corporation Kopfpositionierungssystem mit automatischer Verstärkungsregelung
US4609855A (en) * 1984-11-09 1986-09-02 Motorola, Inc. Adaptive servomotor control
US4710865A (en) * 1984-11-14 1987-12-01 Canon Kabushiki Kaisha Control system for positioning an object using switching from a speed control mode to a position control mode with adjustable brain
JPS6242373A (ja) * 1985-08-20 1987-02-24 Fujitsu Ltd 磁気デイスク装置におけるシ−ク用モ−タの速度制御装置
JPS6252771A (ja) * 1985-08-30 1987-03-07 Toshiba Corp 磁気ヘツドの速度検出装置
US4697127A (en) * 1986-06-09 1987-09-29 International Business Machines Corporation Adaptive control technique for a dynamic system
JP2612262B2 (ja) * 1986-12-16 1997-05-21 富士通株式会社 磁気デイスク装置
JP2672574B2 (ja) * 1988-05-31 1997-11-05 株式会社東芝 情報記録再生装置
US5063454A (en) * 1989-01-10 1991-11-05 Fujitsu Limited Automatic adjustment method and system for servo motor circuit of a magnetic disk apparatus
US5204932A (en) * 1989-01-10 1993-04-20 Fujitsu Limited Servo circuit for magnetic disk apparatus
JP2613937B2 (ja) * 1989-01-30 1997-05-28 富士通株式会社 サーボ回路

Also Published As

Publication number Publication date
DE69014214T2 (de) 1995-04-06
KR930007460B1 (en) 1993-08-11
EP0378328A3 (de) 1991-08-14
JPH02183312A (ja) 1990-07-17
EP0378328B1 (de) 1994-11-23
JPH0736130B2 (ja) 1995-04-19
AU4777390A (en) 1990-08-02
AU612068B2 (en) 1991-06-27
EP0378328A2 (de) 1990-07-18
US5173647A (en) 1992-12-22

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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