JPH0223947B2 - - Google Patents

Info

Publication number
JPH0223947B2
JPH0223947B2 JP53145929A JP14592978A JPH0223947B2 JP H0223947 B2 JPH0223947 B2 JP H0223947B2 JP 53145929 A JP53145929 A JP 53145929A JP 14592978 A JP14592978 A JP 14592978A JP H0223947 B2 JPH0223947 B2 JP H0223947B2
Authority
JP
Japan
Prior art keywords
signal
head
coarse
distance
gain
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
Application number
JP53145929A
Other languages
English (en)
Japanese (ja)
Other versions
JPS55972A (en
Inventor
Jon Soodero Furanku
Josefu Tatsuchiton Jeimuzu
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.)
Unisys Corp
Original Assignee
Unisys 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 Unisys Corp filed Critical Unisys Corp
Publication of JPS55972A publication Critical patent/JPS55972A/ja
Publication of JPH0223947B2 publication Critical patent/JPH0223947B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Program-control systems
    • G05B19/02Program-control systems electric
    • G05B19/18Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form
    • G05B19/19Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
    • G05B19/21Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device
    • G05B19/23Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for point-to-point control
    • G05B19/231Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude
    • G05B19/232Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude with speed feedback only
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition 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
    • G11B5/54Disposition 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
    • G11B5/55Track change, selection or acquisition by displacement of the head
    • G11B5/5521Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5526Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • G11B5/553Details
    • G11B5/5547"Seek" control and circuits therefor
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/30Nc systems
    • G05B2219/37Measurements
    • G05B2219/37388Acceleration or deceleration, inertial measurement
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/30Nc systems
    • G05B2219/41Servomotor, servo controller till figures
    • G05B2219/41163Adapt gain to friction, weight, inertia

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Position Or Direction (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Control Of Velocity Or Acceleration (AREA)
JP14592978A 1977-11-23 1978-11-24 Self regulating electronic tachometer Granted JPS55972A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/854,299 US4184108A (en) 1977-11-23 1977-11-23 Self-regulating electronic tachometer

Publications (2)

Publication Number Publication Date
JPS55972A JPS55972A (en) 1980-01-07
JPH0223947B2 true JPH0223947B2 (2) 1990-05-25

Family

ID=25318296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14592978A Granted JPS55972A (en) 1977-11-23 1978-11-24 Self regulating electronic tachometer

Country Status (6)

Country Link
US (1) US4184108A (2)
EP (1) EP0002133B1 (2)
JP (1) JPS55972A (2)
CA (1) CA1116726A (2)
DE (1) DE2862251D1 (2)
IT (1) IT1160259B (2)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0553849U (ja) * 1991-12-26 1993-07-20 大昭和精機株式会社 センタ研磨装置

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4257074A (en) * 1979-06-15 1981-03-17 Magnetic Peripherals Inc. Time optimal function generator for disk file magnetic recording head servo position control loop
US4263627A (en) * 1979-06-18 1981-04-21 Sperry Rand Corporation Electronic tachometer
FR2466078A1 (fr) * 1979-09-21 1981-03-27 Cii Honeywell Bull Procede pour deplacer un systeme mobile par rapport a un support d'informations et dispositif pour le mettre en oeuvre
US4315198A (en) * 1979-11-07 1982-02-09 Qume Corporation Digital servo system
US4329721A (en) * 1980-02-11 1982-05-11 Sperry Corporation Tachometer for deriving average velocity output by sampling position signal
EP0093886A3 (en) * 1982-06-22 1984-01-18 International Business Machines Corporation Manufacturing method and apparatus for adjusting the position of a magnetic head in a flexible disk drive
US4574227A (en) * 1983-11-14 1986-03-04 Datapoint Corporation Dual mode servo
JPS621012A (ja) * 1985-06-26 1987-01-07 Mitsubishi Electric Corp 回転体の位置決め制御装置
US4679103A (en) * 1986-04-29 1987-07-07 International Business Machines Corporation Digital servo control system for a data recording disk file
US5243691A (en) * 1986-06-18 1993-09-07 Hitachi, Ltd. System for printing documents
WO1988001763A1 (en) * 1986-09-04 1988-03-10 North Atlantic Industries, Inc. Servo-system
JPS6368913A (ja) * 1986-09-10 1988-03-28 Fujitsu Ltd サ−ボ制御回路
JPS6443879A (en) * 1987-08-06 1989-02-16 Ibm Method and apparatus for control of positioning of head
JPH0199486A (ja) * 1987-10-12 1989-04-18 Pioneer Electron Corp ピックアップ駆動用リニアモータの制御装置
JPH0736131B2 (ja) * 1989-01-10 1995-04-19 富士通株式会社 サーボ回路
US5194798A (en) * 1989-01-10 1993-03-16 Fujitsu Limited Servo circuit control method and system
US5204932A (en) * 1989-01-10 1993-04-20 Fujitsu Limited Servo circuit for magnetic disk apparatus
JPH0736130B2 (ja) * 1989-01-10 1995-04-19 富士通株式会社 サーボ位置決め回路
JP2613937B2 (ja) * 1989-01-30 1997-05-28 富士通株式会社 サーボ回路
JP2616008B2 (ja) * 1989-06-02 1997-06-04 富士通株式会社 ディスク装置
DE4038598C1 (2) * 1990-12-04 1991-11-28 Klaus 7312 Kirchheim De Lenhart
KR0156861B1 (ko) * 1995-11-27 1998-12-15 김광호 하드디스크 드라이브에 있어서 서보제어 이득 자동 보상방법
US6707269B2 (en) * 2001-09-11 2004-03-16 Seagate Technology Llc Motor control circuit with adaptive dynamic range selection
CN100437769C (zh) * 2005-01-06 2008-11-26 建兴电子科技股份有限公司 光盘片的读取方法
JP2008243288A (ja) * 2007-03-27 2008-10-09 Fujitsu Ltd 磁気記憶装置、制御装置及び浮上量制御方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006394A (en) * 1972-08-21 1977-02-01 Information Storage Systems, Inc. Coarse and fine control for position servo
GB1396834A (en) * 1973-01-31 1975-06-04 Ibm Data storage apparatus
US3883894A (en) * 1973-10-19 1975-05-13 Storage Disk Corp Disk drive servo system
US4030132A (en) * 1975-03-27 1977-06-14 Memorex Corporation Dual mode velocity servo control for a linear actuator motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0553849U (ja) * 1991-12-26 1993-07-20 大昭和精機株式会社 センタ研磨装置

Also Published As

Publication number Publication date
JPS55972A (en) 1980-01-07
IT7830067A0 (it) 1978-11-22
EP0002133B1 (en) 1983-05-11
US4184108A (en) 1980-01-15
DE2862251D1 (en) 1983-06-16
CA1116726A (en) 1982-01-19
IT1160259B (it) 1987-03-11
EP0002133A1 (en) 1979-05-30

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