GB1423192A - Arrangement for the exact positioning of a movable part - Google Patents

Arrangement for the exact positioning of a movable part

Info

Publication number
GB1423192A
GB1423192A GB1521573A GB1521573A GB1423192A GB 1423192 A GB1423192 A GB 1423192A GB 1521573 A GB1521573 A GB 1521573A GB 1521573 A GB1521573 A GB 1521573A GB 1423192 A GB1423192 A GB 1423192A
Authority
GB
United Kingdom
Prior art keywords
signals
movable part
signal
locations
identifiable
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
GB1521573A
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.)
CII HONEYWELL BULL
Original Assignee
CII HONEYWELL BULL
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 CII HONEYWELL BULL filed Critical CII HONEYWELL BULL
Publication of GB1423192A publication Critical patent/GB1423192A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical 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 programme data in numerical form
    • G05B19/19—Numerical 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 programme 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
    • G05B19/39—Numerical 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 programme 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 a combination of the means covered by at least two of the preceding groups G05B19/21, G05B19/27 and G05B19/33
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/20—Control of position or direction using feedback using a digital comparing device
    • G05D3/203—Control of position or direction using feedback using a digital comparing device using fine or coarse devices
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Control Of Position Or Direction (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)

Abstract

1423192 Automatic control of position COMPAGNIE HONEYWELL BULL 29 March 1973 [5 April 1972] 15215/73 Heading G3N A movable part produces signals corresponding to identifiable locations just before the locations are reached and when the signal corresponding to the desired location is generated the drive is stopped. Displacement of the movable part produces four sinusoidal signals A, A, B, B is phase quadrature, the passage of these signals through zero in the positive direction defining the identifiable locations. Pulses J are generated each time the signals are between -S and +S and represent the distance from 4N-E to 4N+E where 4N is the identifiable position. These pulses J are fed to a "difference of address register" into which the desired location is pre-set and when the register content reaches zero a signal is transmitted to speed-control and displacement control devices to stop the motor drive. As this signal is emitted a distance E before the desired position, this can be obtained without overshoot. The system may be used for positioning magnetic track heads.
GB1521573A 1972-04-05 1973-03-29 Arrangement for the exact positioning of a movable part Expired GB1423192A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7211884A FR2179286A5 (en) 1972-04-05 1972-04-05

Publications (1)

Publication Number Publication Date
GB1423192A true GB1423192A (en) 1976-01-28

Family

ID=9096347

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1521573A Expired GB1423192A (en) 1972-04-05 1973-03-29 Arrangement for the exact positioning of a movable part

Country Status (7)

Country Link
JP (1) JPS4948314A (en)
DE (1) DE2317159A1 (en)
FR (1) FR2179286A5 (en)
GB (1) GB1423192A (en)
HU (1) HU173214B (en)
IT (1) IT982698B (en)
NL (1) NL7303394A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084201A (en) * 1975-12-02 1978-04-11 Basf Aktiengesellschaft Magnetic disc, especially a flexible magnetic disc, for track adjustment and amplitude control
AUPR120400A0 (en) * 2000-11-02 2000-11-23 Fujisawa Pharmaceutical Co., Ltd. New compound

Also Published As

Publication number Publication date
IT982698B (en) 1974-10-21
DE2317159A1 (en) 1973-10-11
JPS4948314A (en) 1974-05-10
FR2179286A5 (en) 1973-11-16
HU173214B (en) 1979-03-28
NL7303394A (en) 1973-10-09

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee