JPS5615180A - Linearmotor control system for magnetic disc device - Google Patents

Linearmotor control system for magnetic disc device

Info

Publication number
JPS5615180A
JPS5615180A JP9091779A JP9091779A JPS5615180A JP S5615180 A JPS5615180 A JP S5615180A JP 9091779 A JP9091779 A JP 9091779A JP 9091779 A JP9091779 A JP 9091779A JP S5615180 A JPS5615180 A JP S5615180A
Authority
JP
Japan
Prior art keywords
magnetic head
target track
linearmotor
speed
output
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.)
Pending
Application number
JP9091779A
Other languages
Japanese (ja)
Inventor
Teruaki Emori
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.)
Fujitsu Ltd
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
Priority to JP9091779A priority Critical patent/JPS5615180A/en
Publication of JPS5615180A publication Critical patent/JPS5615180A/en
Pending 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

Landscapes

  • Control Of Position Or Direction (AREA)
  • Control Of Linear Motors (AREA)

Abstract

PURPOSE:To accomplish a stable positioning of the magnetic head by raising the speed by steps while checking position and performing accurate position control after it reaches the target track in the movement of the magnetic head onto the target track. CONSTITUTION:In the movement of the magnetic head 12, the gate 1 is opened simultaneously with the inputting of the target track number into the registor 3. The output of the oscillator 4 is inputted into the D/A converter 7 through the counter 6 and the output voltage c acting as the speed reference signal is raised by steps to increase the speed of drive linearmotor 10. At the same time, each time the output of the oscillator 4 is provided, the track number reading circuit 5 reads the track number corresponding to the magnetic head 12 to compare it with the value in the registor 3. As the magnetic head 12 reaches the target track, the gate is closed while accurate position control is performed by means of another controller.
JP9091779A 1979-07-19 1979-07-19 Linearmotor control system for magnetic disc device Pending JPS5615180A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9091779A JPS5615180A (en) 1979-07-19 1979-07-19 Linearmotor control system for magnetic disc device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9091779A JPS5615180A (en) 1979-07-19 1979-07-19 Linearmotor control system for magnetic disc device

Publications (1)

Publication Number Publication Date
JPS5615180A true JPS5615180A (en) 1981-02-13

Family

ID=14011768

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9091779A Pending JPS5615180A (en) 1979-07-19 1979-07-19 Linearmotor control system for magnetic disc device

Country Status (1)

Country Link
JP (1) JPS5615180A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6489985A (en) * 1987-09-28 1989-04-05 Fuji Electric Co Ltd Positioning control method employing voltage type inverter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6489985A (en) * 1987-09-28 1989-04-05 Fuji Electric Co Ltd Positioning control method employing voltage type inverter

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