AU466533B2 - Position-measuring transformer having end=detecting windings useful for positioning a magnetic head ofa disc drive system - Google Patents

Position-measuring transformer having end=detecting windings useful for positioning a magnetic head ofa disc drive system

Info

Publication number
AU466533B2
AU466533B2 AU39732/72A AU3973272A AU466533B2 AU 466533 B2 AU466533 B2 AU 466533B2 AU 39732/72 A AU39732/72 A AU 39732/72A AU 3973272 A AU3973272 A AU 3973272A AU 466533 B2 AU466533 B2 AU 466533B2
Authority
AU
Australia
Prior art keywords
positioning
drive system
magnetic head
disc drive
measuring transformer
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
AU39732/72A
Other versions
AU3973272A (en
Inventor
Loring Farrand Clair
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.)
Farrand Industries Inc
Original Assignee
Farrand Industries Inc
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 Farrand Industries Inc filed Critical Farrand Industries Inc
Application granted granted Critical
Publication of AU466533B2 publication Critical patent/AU466533B2/en
Publication of AU3973272A publication Critical patent/AU3973272A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/08—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
    • H01F29/12—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable coil, winding, or part thereof; having movable shield
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
AU39732/72A 1971-03-08 1972-03-07 Position-measuring transformer having end=detecting windings useful for positioning a magnetic head ofa disc drive system Expired AU466533B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12195171A 1971-03-08 1971-03-08
USUS121951 1971-03-08

Publications (2)

Publication Number Publication Date
AU466533B2 true AU466533B2 (en) 1973-09-13
AU3973272A AU3973272A (en) 1973-09-13

Family

ID=22399715

Family Applications (1)

Application Number Title Priority Date Filing Date
AU39732/72A Expired AU466533B2 (en) 1971-03-08 1972-03-07 Position-measuring transformer having end=detecting windings useful for positioning a magnetic head ofa disc drive system

Country Status (11)

Country Link
US (1) US3673584A (en)
JP (1) JPS5118181B1 (en)
AU (1) AU466533B2 (en)
CA (1) CA952229A (en)
CH (1) CH555531A (en)
DE (1) DE2210470B2 (en)
FR (1) FR2136011A5 (en)
GB (1) GB1341655A (en)
IT (1) IT958694B (en)
NO (1) NO133602C (en)
SE (1) SE383781B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725760A (en) * 1969-03-10 1973-04-03 Bendix Corp Automatic plotter utilizing a coordinate grid device
FR2120410A5 (en) * 1970-12-31 1972-08-18 Honeywell Bull Soc Ind
US3772587A (en) * 1972-03-15 1973-11-13 Inductosyn Corp Position measuring transformer
JPS51115852A (en) * 1975-04-04 1976-10-12 Nissan Motor Co Ltd Detector of the revolving angle and revolution of a revolving body
IT1072337B (en) * 1976-05-18 1985-04-10 Olivetti Controllo Numerico Cp PRECISION TRANSDUCER FOR POSITION MEASUREMENTS AND RELATED MANUFACTURING PROCESS
US4863039A (en) * 1983-12-23 1989-09-05 Three Phoenix Company Apparatus and method for handling a flexible disk for testing
US4893077A (en) * 1987-05-28 1990-01-09 Auchterlonie Richard C Absolute position sensor having multi-layer windings of different pitches providing respective indications of phase proportional to displacement
US4893078A (en) * 1987-05-28 1990-01-09 Auchterlonie Richard C Absolute position sensing using sets of windings of different pitches providing respective indications of phase proportional to displacement
US4918418A (en) * 1988-08-04 1990-04-17 Caterpillar Inc. Inductive coil structure with electrical return path
US5239288A (en) * 1990-03-09 1993-08-24 Transicoil Inc. Resolver having planar windings
JP2653011B2 (en) * 1993-05-14 1997-09-10 日本電気株式会社 Inductosin substrate
US6750575B2 (en) 2001-08-21 2004-06-15 General Electric Company Method and apparatus for sensing the angular position of a rotating member

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2915722A (en) * 1957-05-13 1959-12-01 Inductosyn Corp Pattern for slider of position measuring transformer
BE711079A (en) * 1968-02-21 1968-08-21 Acec METHOD AND DEVICE FOR MEASURING THE DISTANCE TAKEN BY A GUIDED JOURNEY VEHICLE, FOR EXAMPLE RAILWAY OR THE LIKE.
US3522568A (en) * 1969-03-13 1970-08-04 Inductosyn Corp Tape scale for position measuring transformer

Also Published As

Publication number Publication date
SE383781B (en) 1976-03-29
CA952229A (en) 1974-07-30
NO133602C (en) 1976-05-26
GB1341655A (en) 1973-12-25
DE2210470A1 (en) 1972-10-19
CH555531A (en) 1974-10-31
FR2136011A5 (en) 1972-12-22
US3673584A (en) 1972-06-27
DE2210470B2 (en) 1973-11-08
IT958694B (en) 1973-10-30
JPS5118181B1 (en) 1976-06-08
NO133602B (en) 1976-02-16
DE2210470C3 (en) 1974-06-06
AU3973272A (en) 1973-09-13

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