DE3670919D1 - Servoregelungssystem fuer eine magnetplattenvorrichtung mit schneller verminderung des mehrmaligen kopfpositionsfehlers. - Google Patents

Servoregelungssystem fuer eine magnetplattenvorrichtung mit schneller verminderung des mehrmaligen kopfpositionsfehlers.

Info

Publication number
DE3670919D1
DE3670919D1 DE8686107741T DE3670919T DE3670919D1 DE 3670919 D1 DE3670919 D1 DE 3670919D1 DE 8686107741 T DE8686107741 T DE 8686107741T DE 3670919 T DE3670919 T DE 3670919T DE 3670919 D1 DE3670919 D1 DE 3670919D1
Authority
DE
Germany
Prior art keywords
control system
servo control
position error
head position
magnetic disc
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
DE8686107741T
Other languages
English (en)
Inventor
Michael Lee Workman
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 DE3670919D1 publication Critical patent/DE3670919D1/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
    • 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
DE8686107741T 1985-07-16 1986-06-06 Servoregelungssystem fuer eine magnetplattenvorrichtung mit schneller verminderung des mehrmaligen kopfpositionsfehlers. Expired - Fee Related DE3670919D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/755,527 US4616276A (en) 1985-07-16 1985-07-16 Disk file servo control system with fast reduction of repeatable head position error

Publications (1)

Publication Number Publication Date
DE3670919D1 true DE3670919D1 (de) 1990-06-07

Family

ID=25039539

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686107741T Expired - Fee Related DE3670919D1 (de) 1985-07-16 1986-06-06 Servoregelungssystem fuer eine magnetplattenvorrichtung mit schneller verminderung des mehrmaligen kopfpositionsfehlers.

Country Status (5)

Country Link
US (1) US4616276A (de)
EP (1) EP0209692B1 (de)
JP (1) JPS6218683A (de)
CA (1) CA1228418A (de)
DE (1) DE3670919D1 (de)

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US6002540A (en) * 1995-05-18 1999-12-14 International Business Machines Corporation Method and apparatus for rotary actuator arc compensation correction in a direct access storage device
US6456452B1 (en) * 1995-09-01 2002-09-24 Seagate Technology Llc Feed forward compensation for repeatable head position error in a disc drive
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KR100212988B1 (ko) * 1996-06-29 1999-08-02 윤종용 액츄에이터의 외란 보상방법 및 장치
US5708581A (en) * 1996-07-12 1998-01-13 Hewlett-Packard Company Method for maximizing feedforward orthogonality for minimizing servo system nuller instability
JP3253535B2 (ja) * 1996-09-20 2002-02-04 富士通株式会社 ディスク装置のヘッド位置決め制御装置及び磁気ディスク装置
US5875066A (en) * 1996-12-13 1999-02-23 International Business Machines Corporation Method and apparatus for real-time filtering of a position error signal for a disk drive servo system
US6137753A (en) * 1997-04-14 2000-10-24 Oak Technology, Inc. Runout calibration for disc drive system
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
US6064542A (en) * 1997-08-08 2000-05-16 Quantum Corporation Methods and apparatus for positioning read/write head in a computer disk drive
US6141175A (en) * 1997-10-08 2000-10-31 Western Digital Corporation Repeatable runout cancellation in sectored servo disk drive positioning system
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JP3559209B2 (ja) 1998-12-24 2004-08-25 富士通株式会社 記憶装置
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US6563663B1 (en) 1999-05-07 2003-05-13 Seagate Technology Llc Repeatable runout compensation using iterative learning control in a disc storage system
CN1363087A (zh) 1999-07-23 2002-08-07 西加特技术有限责任公司 使用带有预定参数的学习算规的可重复偏离补偿
US6661599B1 (en) 1999-08-27 2003-12-09 Seagate Technology Llc Enhanced adaptive feedforward control to cancel once-per-revolution disturbance by shaping the internal mode
US6549364B1 (en) * 1999-12-15 2003-04-15 Samsung Electronics Co., Ltd. Optimization method and apparatus for a generalized fourier seek trajectory for a hard disk drive servomechanism
US6952320B1 (en) 1999-12-16 2005-10-04 Seagate Technology Llc Virtual tracks for repeatable runout compensation
US6788489B1 (en) * 2000-05-09 2004-09-07 Hitachi Global Storage Technologies Netherlands B.V. Employing off-track capability in data access operations in a direct access storage device
US6654198B2 (en) 2000-08-23 2003-11-25 Seagate Technology Llc Repeatable run-out error compensation method for a disc drive
US6744590B2 (en) 2000-09-14 2004-06-01 Samsung Electronics Co., Inc. Seek trajectory adaptation in sinusoidal seek servo hard disk drives
US6801384B2 (en) 2000-09-14 2004-10-05 Samsung Electronics Co., Ltd. Voltage-constrained sinusoidal seek servo in hard disk drives
JP2002100137A (ja) 2000-09-21 2002-04-05 Toshiba Corp ディスク装置及びサーボ制御方法
US6771454B2 (en) 2000-10-13 2004-08-03 Seagate Technology Llc Suspension sense capability for windage control
JPWO2003009290A1 (ja) * 2001-07-17 2004-11-11 富士通株式会社 ヘッド追従制御方法、ヘッド追従制御装置及びそれを使用した記憶装置
US6975480B1 (en) * 2002-04-17 2005-12-13 Western Digital Technologies, Inc. Method for determining repeatable runout cancellation values in a magnetic disk drive using filtering
US6987638B1 (en) 2002-05-03 2006-01-17 Maxtor Corporation Method and apparatus for applying adaptive non-linear repeatable runout compensation in a disk drive
US6831805B2 (en) 2002-06-27 2004-12-14 International Business Machines Corporation Apparatus and method to read and/or write information to a magnetic tape medium
US6950265B2 (en) * 2002-10-16 2005-09-27 International Business Machines Corporation Method and apparatus for servo defect management
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US6947245B2 (en) 2003-01-22 2005-09-20 Matsushita Electric Industrial Co., Ltd. Incorporating repeatable run-out during self-writing of servo patterns in a rotatable media data storage device
JP2006040402A (ja) * 2004-07-27 2006-02-09 Hitachi Global Storage Technologies Netherlands Bv 磁気ディスク装置
KR100585166B1 (ko) * 2004-12-01 2006-06-01 삼성전자주식회사 비주기적 외란 보상 제어 장치 및 방법과 이를 이용한디스크 드라이브
US7046476B1 (en) * 2005-01-10 2006-05-16 Hitachi Global Storage Technologies Method apparatus and system for accessing discontinuous media tracks
US7196864B1 (en) 2005-06-15 2007-03-27 Western Digital Technologies, Inc. Disk drive having a servo control system optimized for faster determination of repeatable runout correction values and related method
US7733588B1 (en) 2006-01-04 2010-06-08 Marvell International Ltd. Repetitive feed-forward algorithm for self-servo-write PLL
US7295397B1 (en) 2006-05-30 2007-11-13 Broadcom Corporation Feedforward controller and methods for use therewith
US7436617B2 (en) * 2006-06-21 2008-10-14 Broadcom Corporation Controller, state estimator and methods for use therewith
US7549407B2 (en) 2007-03-28 2009-06-23 Gm Global Technology Operations, Inc. Method and system for controlling a valve device
US7737793B1 (en) 2007-09-27 2010-06-15 Marvell International Ltd. Calibrating control loops
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JP2012109026A (ja) * 2012-03-13 2012-06-07 Toshiba Corp 位置制御装置及びこれを用いたデイスク装置
JP5362062B2 (ja) * 2012-03-13 2013-12-11 株式会社東芝 位置制御装置及びこれを用いたディスク装置
US8982503B1 (en) 2013-01-21 2015-03-17 Western Digital Technologies, Inc. Disk drive generating feed-forward compensation value based on two points of a sinusoidal control signal

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JPS5924454A (ja) * 1982-07-30 1984-02-08 Fujitsu Ltd デイスク装置における偏心情報検出装置

Also Published As

Publication number Publication date
US4616276A (en) 1986-10-07
JPH0410145B2 (de) 1992-02-24
CA1228418A (en) 1987-10-20
EP0209692B1 (de) 1990-05-02
EP0209692A2 (de) 1987-01-28
JPS6218683A (ja) 1987-01-27
EP0209692A3 (en) 1987-08-19

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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