KR980004823A - 액츄에이터의 외란 보상방법 및 장치 - Google Patents

액츄에이터의 외란 보상방법 및 장치 Download PDF

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Publication number
KR980004823A
KR980004823A KR1019960026424A KR19960026424A KR980004823A KR 980004823 A KR980004823 A KR 980004823A KR 1019960026424 A KR1019960026424 A KR 1019960026424A KR 19960026424 A KR19960026424 A KR 19960026424A KR 980004823 A KR980004823 A KR 980004823A
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KR
South Korea
Prior art keywords
disturbance
actuator
feedback
state
discrete
Prior art date
Application number
KR1019960026424A
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English (en)
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KR100212988B1 (ko
Inventor
강창익
Original Assignee
윤종용
삼성전자 주식회사
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.)
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Publication date
Application filed by 윤종용, 삼성전자 주식회사 filed Critical 윤종용
Priority to KR1019960026424A priority Critical patent/KR100212988B1/ko
Priority to US08/885,739 priority patent/US6023390A/en
Publication of KR980004823A publication Critical patent/KR980004823A/ko
Application granted granted Critical
Publication of KR100212988B1 publication Critical patent/KR100212988B1/ko

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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
    • G11B21/03—Driving or moving of heads for correcting time base error during transducing operation, by driving or moving the head in a direction more or less parallel to the direction of travel of the recording medium, e.g. tangential direction on a rotating disc
    • 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
    • G11B5/596—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 disks
    • G11B5/59627—Aligning for runout, eccentricity or offset compensation

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)
  • Control Of Position Or Direction (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)

Abstract

1. 청구범위에 기재된 발명이 속한 기술분야
액츄에이터의 외란 보상 방법 및 장치
2. 발명이 해결하고자 하는 기술적 과제
액츄에이터의 외란보상시 과도응답시 오버슈트를 줄이며, 외란보상을 위해 처리되는 연산시간을 단축할 수 있게 구현한다.
3. 발명의 해결방법의 요지
본 발명에서는 졸래기술의 추정기 관점에서 탈피하여 상태궤한 관점에서 외란을 보상하는 제어알고리즘을 구현하는 바이어스 포스 외란과 런 아웃 외란을 보상한다.
4. 발명의중요한 용도
디스크 드라이브의 외란 보상.

Description

액츄에이터의 외란 보상방법 및 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제4도는 본 발명의 실시예에 따라 바이어스 포스 외란과 런아웃 외란을 모두 보상하는 이산치 제어 시스템 블럭선도를 보여주는 도면.

Claims (3)

  1. 자기 디스크 드라이브에서 액츄에이터에 인가되는 외란을 보산하는 방법에 있어서, 상기 액츄에이터 제어를 위한 페루프 이산치 시스템에서 상기 액츄에이터에 인가되는 바이어스포스 외란과 런아웃 외란을 보상하기 위해 피드백 시스템의 피드백 경로 전달함수 H(z)에 바이어스 포스 외란에 대응된 영점 1과 런아웃 외란에 대응된 영점 eJWeT,e-JWeT를 추가함을 특징으로 하는 방법.
  2. 제1항에 있어서, 상기 피드백 경로 전달함수 H(z)는 하기 식으로 표현됨을 특징으로 하는 방법.
    여기서, 상구 a1,a2,a3,a4,a5는 상태궤환이득 k1,k2,k3,k4,k5에 의하여 결정되는 값 a, b1,b2는 액츄에이터를 이산치(discretization)로 할 경우 결정되는 시스템 파라메타(parameter, W0는 디스크 회전주파수)
  3. 자기 디스크 드라이브에서 액츄에이터에 인가되는 외란을 보상하는 장치에 있어서, 상기 엑츄에이터의 선단에 위치한 자기헤드의 실제위치를 나타내는 피드백 이산치 입력신호 x(n)을 입력으로 하는 식(12)를 이용하여 상태변수 x1(n), x2(n), x3(n)를 출력하는 상태변수계산부와,상기피드백 이산치 입력신호 X(n)를 미분하여 속도를 나타내는 신호V(n)로 출력하는 미분기와,상기 상태변수 X1(n), X2(n), X3(n)와 상기 v(n) 및 상기 피드백 이산치 입력신호 x(n)을 입력으로 하기 식(11)을 이용해 상태궤한 제어를 수행하여 상기액츄에이터에 인가할 이산치 제어입력시호 u(n)을 출력하는 상태췌환제어기로 구성된 피트백 시스템을 가짐을 특징으로 하는 장치.
    여기서, k1,k2,k3,k4,k5는 상태궤한이득
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960026424A 1996-06-29 1996-06-29 액츄에이터의 외란 보상방법 및 장치 KR100212988B1 (ko)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1019960026424A KR100212988B1 (ko) 1996-06-29 1996-06-29 액츄에이터의 외란 보상방법 및 장치
US08/885,739 US6023390A (en) 1996-06-29 1997-06-30 Disturbance compensation in actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960026424A KR100212988B1 (ko) 1996-06-29 1996-06-29 액츄에이터의 외란 보상방법 및 장치

Publications (2)

Publication Number Publication Date
KR980004823A true KR980004823A (ko) 1998-03-30
KR100212988B1 KR100212988B1 (ko) 1999-08-02

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Application Number Title Priority Date Filing Date
KR1019960026424A KR100212988B1 (ko) 1996-06-29 1996-06-29 액츄에이터의 외란 보상방법 및 장치

Country Status (2)

Country Link
US (1) US6023390A (ko)
KR (1) KR100212988B1 (ko)

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KR100712512B1 (ko) * 2005-05-28 2007-04-30 삼성전자주식회사 하드디스크 드라이브의 바이어스 보상 방법, 이에 적합한바이어스 포스 프로파일 작성 방법, 이에 적합한 기록매체들, 그리고 이에 적합한 하드디스크 드라이브

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US6292324B1 (en) * 1998-01-30 2001-09-18 Maxtor Corporation Disk drive with compensation values calculated using a non-causal impulse response
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JP2002245738A (ja) * 2001-02-15 2002-08-30 Fujitsu Ltd ディスク装置及び外乱補償方法
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SG125151A1 (en) * 2005-02-24 2006-09-29 Seagate Technology Llc Velocity control system for an actuator assembly
US7253989B1 (en) * 2005-03-21 2007-08-07 Western Digital Technologies, Inc. Disk drive compensation of bias imparted by a flex circuit cable utilizing a dual bias curve estimation scheme
US7160149B1 (en) * 2005-06-24 2007-01-09 John Mezzalingua Associates, Inc. Coaxial connector and method of connecting a two-wire cable to a coaxial connector
US7319570B2 (en) * 2005-09-19 2008-01-15 Seagate Technology Llc Random vibration and shock compensator using a disturbance observer
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
US7440223B2 (en) * 2006-11-22 2008-10-21 Samsung Electronics Co., Ltd. Written-in repeatable run-out correction for hard disk drives
JP4764506B2 (ja) * 2009-12-16 2011-09-07 株式会社東芝 ディスク記憶装置及びサーボ制御方法
JP4703760B1 (ja) * 2009-12-16 2011-06-15 株式会社東芝 ディスク記憶装置及びサーボ制御方法
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Publication number Priority date Publication date Assignee Title
KR100712512B1 (ko) * 2005-05-28 2007-04-30 삼성전자주식회사 하드디스크 드라이브의 바이어스 보상 방법, 이에 적합한바이어스 포스 프로파일 작성 방법, 이에 적합한 기록매체들, 그리고 이에 적합한 하드디스크 드라이브

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US6023390A (en) 2000-02-08
KR100212988B1 (ko) 1999-08-02

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