KR930004772B1 - Servo circuit - Google Patents

Servo circuit

Info

Publication number
KR930004772B1
KR930004772B1 KR9001004A KR900001004A KR930004772B1 KR 930004772 B1 KR930004772 B1 KR 930004772B1 KR 9001004 A KR9001004 A KR 9001004A KR 900001004 A KR900001004 A KR 900001004A KR 930004772 B1 KR930004772 B1 KR 930004772B1
Authority
KR
South Korea
Prior art keywords
servo circuit
servo
circuit
Prior art date
Application number
KR9001004A
Other languages
English (en)
Inventor
Shuichi Hashimoto
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
Application granted granted Critical
Publication of KR930004772B1 publication Critical patent/KR930004772B1/ko

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
    • 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
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/41—Servomotor, servo controller till figures
    • G05B2219/41021—Variable gain
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/42—Servomotor, servo controller kind till VSS
    • G05B2219/42066—Position and speed and acceleration and current feedback
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/42—Servomotor, servo controller kind till VSS
    • G05B2219/42104—Loop switch, speed loop then position loop, mode switch
KR9001004A 1989-01-30 1990-01-30 Servo circuit KR930004772B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1017774A JP2613937B2 (ja) 1989-01-30 1989-01-30 サーボ回路

Publications (1)

Publication Number Publication Date
KR930004772B1 true KR930004772B1 (en) 1993-06-05

Family

ID=11953063

Family Applications (1)

Application Number Title Priority Date Filing Date
KR9001004A KR930004772B1 (en) 1989-01-30 1990-01-30 Servo circuit

Country Status (6)

Country Link
US (1) US4965501A (ko)
EP (1) EP0381314B1 (ko)
JP (1) JP2613937B2 (ko)
KR (1) KR930004772B1 (ko)
AU (1) AU609654B2 (ko)
DE (1) DE69018108T2 (ko)

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US5194798A (en) * 1989-01-10 1993-03-16 Fujitsu Limited Servo circuit control method and system
JPH0736130B2 (ja) * 1989-01-10 1995-04-19 富士通株式会社 サーボ位置決め回路
US5063454A (en) * 1989-01-10 1991-11-05 Fujitsu Limited Automatic adjustment method and system for servo motor circuit of a magnetic disk apparatus
US5231550A (en) * 1990-03-12 1993-07-27 Fujitsu Limited Track access control system preventing unintentional delay in movement of head in non-adjusted disc device
JPH03290706A (ja) * 1990-04-09 1991-12-20 Mitsubishi Electric Corp 数値制御装置
KR950001610B1 (ko) * 1990-06-29 1995-02-27 가부시기가이샤 도시바 자기헤드 이동속도 제어장치
JP3030513B2 (ja) * 1990-10-23 2000-04-10 株式会社日立製作所 ディスク記録装置
US5475545A (en) * 1991-03-28 1995-12-12 Seagate Technology, Inc. Method for reducing noise during seeks in a hard disk drive
US5657179A (en) * 1991-03-28 1997-08-12 Seagate Technology, Inc. Method for reducing noise during track seeking in a disc drive
US5305447A (en) 1991-07-31 1994-04-19 Seagate Technology, Inc. Multi-task operating system for a disc drive
JPH05228794A (ja) * 1992-02-14 1993-09-07 Fanuc Ltd 主軸位置決め方式
JP3248220B2 (ja) * 1992-03-18 2002-01-21 株式会社日立製作所 ディスク装置及びその制御方法
JPH05274695A (ja) * 1992-03-26 1993-10-22 Toshiba Corp ヘッド移動制御装置
JPH065019A (ja) * 1992-04-08 1994-01-14 Internatl Business Mach Corp <Ibm> デイスク・ドライブ制御システム及び読み取り／書き込みヘツドの位置設定方法
US5343131A (en) * 1993-01-27 1994-08-30 Fujitsu Limited Method and apparatus for self-synchronizing seek deceleration
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
JP2931749B2 (ja) * 1993-12-08 1999-08-09 株式会社東芝 データ記録再生装置とサーボ処理方法
US5696647A (en) * 1994-03-28 1997-12-09 Seagate Technology, Inc. Method for carrying out seeks in a hard disc drive to limit the generation of acoustic noise including using a slew rate limit
JPH086603A (ja) * 1994-04-18 1996-01-12 Canon Inc サーボ系の調整方法及びそのサーボ制御装置
US5859516A (en) * 1994-11-11 1999-01-12 Siemens Aktiengesellschaft Speed control for any override range effective over a plurality of blocks
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
KR100255189B1 (ko) * 1996-09-25 2000-05-01 윤종용 서보제어계의 게인추정방법
US6031684A (en) * 1997-06-03 2000-02-29 Seagate Technology, Inc. Servo gain optimization using model reference seeks in a disc drive
DE19882463T1 (de) * 1997-06-13 2000-07-06 Seagate Technology Temperaturabhängige Plattenlaufwerk-Parameterkonfiguration
US6266203B1 (en) 1997-06-13 2001-07-24 Seagate Technology Llc Integrated temperature sense circuit in a disc drive
US6490120B1 (en) 1997-08-29 2002-12-03 Seagate Technology Llc Servo gain optimization using a variable convergence factor
US6252731B1 (en) 1997-10-16 2001-06-26 Seagate Technology Llc Parametric optimization using disc drive read channel quality measurements
US6570733B1 (en) 1998-01-13 2003-05-27 Seagate Technology Llc Adaptive servo gain adjustment to improve disc drive seek performance
JP2002520762A (ja) 1998-07-13 2002-07-09 シーゲイト テクノロジー エルエルシー ディスク・ドライブのシーク時間の変動と音響雑音の発生を減少させる電流プロファイルの形成
US6449117B1 (en) 1998-07-13 2002-09-10 Seagate Technology Llc Reducing acoustic noise using a current profile during initial stages of a disc drive seek
US6268974B1 (en) 1998-07-13 2001-07-31 Seagate Technology Llc Gain optimization in a disc drive
GB2362987A (en) 1999-02-22 2001-12-05 Seagate Technology Llc Seek recovery using different servo pulse data qualification modes
US6597529B1 (en) * 1999-11-12 2003-07-22 Maxtor Corporation Method and apparatus for reducing acoustic noise in servo-controlled system
AU2001264608A1 (en) * 2000-05-09 2001-11-20 Tennant Company Linear actuator control structure
KR100694362B1 (ko) * 2000-06-09 2007-03-12 시게이트 테크놀로지 엘엘씨 디스크 드라이브 서보 시스템에서 안정 모드 동안 액추에이터 암 진동을 감소시키는 방법 및 장치
US6819521B2 (en) 2000-06-09 2004-11-16 Seagate Technology Llc Repeated runout position error compensation in a disc drive servo system
US6747838B2 (en) 2001-02-15 2004-06-08 Seagate Technology Llc Thermal performance of an integrated amplifier in a disc drive
US6731453B2 (en) 2001-02-15 2004-05-04 Seagate Technology Llc Optimizing thermal performance of an integrated circuit in a disc drive
JP4799761B2 (ja) * 2001-05-28 2011-10-26 オンセミコンダクター・トレーディング・リミテッド ステッピングモータの制御方法
US6574070B2 (en) 2001-08-09 2003-06-03 Seagate Technology Llc Model reference generator for a disc drive
US7082010B1 (en) 2001-11-09 2006-07-25 Maxtor Corporation Method and apparatus for reducing seek acoustics in a disk drive using feedback during large current transitions
CN1330063C (zh) * 2002-08-22 2007-08-01 日产自动车株式会社 车辆开/合体的控制部件
DE102012025323A1 (de) * 2012-12-22 2014-06-26 Festo Ag & Co. Kg Verfahren zum Betreiben einer Linearmotoranordnung und Linearmotoranordnung
CN104898466B (zh) * 2015-03-13 2019-04-19 中国科学院光电研究院 一种激光跟踪仪的通信控制电路

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US4096425A (en) * 1974-09-19 1978-06-20 Ferranti Limited Servo systems
NL7704258A (nl) * 1977-04-19 1978-10-23 Daisy Syst Holland Servosturing met gedigitaliseerde afstandsbepa- ling en variabele versterkings-/dempingscoeffi- cienten.
US4184108A (en) * 1977-11-23 1980-01-15 Sperry Rand Corporation Self-regulating electronic tachometer
JPS5564661A (en) * 1978-11-08 1980-05-15 Toshiba Corp Self-compensator for magnetic disk memory unit
EP0097208B1 (en) * 1982-06-18 1987-03-11 International Business Machines Corporation Head positioning system with automatic gain control
JPS5919248A (ja) * 1982-07-23 1984-01-31 Sanyo Electric Co Ltd サ−ボゲイン調整回路
JPS5965975A (ja) * 1982-10-05 1984-04-14 Comput Basic Mach Technol Res Assoc 磁気デイスク記憶装置
JPS5978577U (ja) * 1982-11-15 1984-05-28 株式会社東芝 移動機構のサ−ボ制御装置
US4574227A (en) * 1983-11-14 1986-03-04 Datapoint Corporation Dual mode servo
US4633423A (en) * 1984-03-27 1986-12-30 Storage Technology Corporation Coherent error suppression in digital tachometers and the like
US4609855A (en) * 1984-11-09 1986-09-02 Motorola, Inc. Adaptive servomotor control
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
JPS62203203A (ja) * 1986-03-03 1987-09-07 Sumitomo Electric Ind Ltd サ−ボ回路
JPS6368913A (ja) * 1986-09-10 1988-03-28 Fujitsu Ltd サ−ボ制御回路
US4775903A (en) * 1986-10-14 1988-10-04 Hewlett-Packard Company Sampled servo seek and track follow system for a magnetic disc drive
JP2612262B2 (ja) * 1986-12-16 1997-05-21 富士通株式会社 磁気デイスク装置
JPH0783625B2 (ja) * 1987-04-03 1995-09-06 三菱電機株式会社 検出ヘツドの速度制御装置
JPH01116972A (ja) * 1987-10-30 1989-05-09 Mitsubishi Electric Corp 記憶装置

Also Published As

Publication number Publication date
US4965501A (en) 1990-10-23
DE69018108D1 (de) 1995-05-04
EP0381314A2 (en) 1990-08-08
JP2613937B2 (ja) 1997-05-28
EP0381314B1 (en) 1995-03-29
AU4785490A (en) 1990-08-09
DE69018108T2 (de) 1995-08-24
AU609654B2 (en) 1991-05-02
JPH02199513A (ja) 1990-08-07
EP0381314A3 (en) 1991-08-14

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A201 Request for examination
G160 Decision to publish patent application
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Payment date: 20000531

Year of fee payment: 8

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