IT998403B - COARSE AND FINE CONTROL FOR A POSITIONING SERVO SYSTEM - Google Patents

COARSE AND FINE CONTROL FOR A POSITIONING SERVO SYSTEM

Info

Publication number
IT998403B
IT998403B IT2802973A IT2802973A IT998403B IT 998403 B IT998403 B IT 998403B IT 2802973 A IT2802973 A IT 2802973A IT 2802973 A IT2802973 A IT 2802973A IT 998403 B IT998403 B IT 998403B
Authority
IT
Italy
Prior art keywords
coarse
servo system
fine control
positioning servo
positioning
Prior art date
Application number
IT2802973A
Other languages
Italian (it)
Original Assignee
Information Storage Systems
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 Information Storage Systems filed Critical Information Storage Systems
Application granted granted Critical
Publication of IT998403B publication Critical patent/IT998403B/en

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00Control of position or direction
    • G05D3/12Control of position or direction using feedback
    • G05D3/14Control of position or direction using feedback using an analogue comparing device
    • G05D3/1436Control of position or direction using feedback using an analogue comparing device with fine or coarse devices
    • 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
    • G11B5/5552Track change, selection or acquisition by displacement of the head across disk tracks using fine positioning means for track acquisition separate from the coarse (e.g. track changing) positioning means
    • 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
    • G05B2219/42Servomotor, servo controller kind till VSS
    • G05B2219/42171Velocity profile, variable gain, multiplication factors, rom ram

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Feedback Control In General (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)
IT2802973A 1972-08-21 1973-08-21 COARSE AND FINE CONTROL FOR A POSITIONING SERVO SYSTEM IT998403B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28248772A 1972-08-21 1972-08-21

Publications (1)

Publication Number Publication Date
IT998403B true IT998403B (en) 1976-01-20

Family

ID=23081724

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2802973A IT998403B (en) 1972-08-21 1973-08-21 COARSE AND FINE CONTROL FOR A POSITIONING SERVO SYSTEM

Country Status (7)

Country Link
JP (1) JPS5148053B2 (en)
CA (1) CA995300A (en)
DE (1) DE2326661A1 (en)
FR (1) FR2197193B1 (en)
GB (1) GB1423706A (en)
IT (1) IT998403B (en)
NL (1) NL7311053A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1488038A (en) * 1974-12-10 1977-10-05 Ibm Data storage apparatus
FI108262B (en) 1998-01-23 2001-12-14 Metso Paper Automation Oy Method of positioning an actuator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1127992A (en) * 1955-06-16 1956-12-28 Servomecanismes Electroniques Improvements to servomechanisms
GB1114676A (en) * 1963-12-23 1968-05-22 English Electric Co Ltd Control system for an electrically-operated actuator
BE724125A (en) * 1968-11-19 1969-05-19 Acec Position control device
DE2034933A1 (en) * 1970-07-14 1972-01-27 Siemens Ag Disk storage
GB1319227A (en) * 1971-02-15 1973-06-06 Ibm Movement control system

Also Published As

Publication number Publication date
FR2197193B1 (en) 1976-11-19
FR2197193A1 (en) 1974-03-22
JPS5148053B2 (en) 1976-12-18
NL7311053A (en) 1974-02-25
GB1423706A (en) 1976-02-04
DE2326661A1 (en) 1974-03-21
CA995300A (en) 1976-08-17
JPS5036105A (en) 1975-04-05

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