JPS57164476A - Servo positioning mechanism of magnetic disk device - Google Patents

Servo positioning mechanism of magnetic disk device

Info

Publication number
JPS57164476A
JPS57164476A JP4990581A JP4990581A JPS57164476A JP S57164476 A JPS57164476 A JP S57164476A JP 4990581 A JP4990581 A JP 4990581A JP 4990581 A JP4990581 A JP 4990581A JP S57164476 A JPS57164476 A JP S57164476A
Authority
JP
Japan
Prior art keywords
overshoot
coefficient
control
extent
speed
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
JP4990581A
Other languages
Japanese (ja)
Inventor
Keizo Hama
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4990581A priority Critical patent/JPS57164476A/en
Publication of JPS57164476A publication Critical patent/JPS57164476A/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
    • G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks

Landscapes

  • Control Of Position Or Direction (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)

Abstract

PURPOSE:To achieve automatic positioning without any influence of variance of parts, by detecting the extent of the overshoot of a servo control signal during positioning operation, and thus setting the conversion coefficient of a track follow-up control system. CONSTITUTION:The output of a position error generator 1 indicating a present position and that of a target speed generator 3 are inputted to a mode switch 4 to find and supply a difference between a target speed and an actual speed and that of a target and an actural position to a varying device 6. On the other hand, an overshoot detector 11 is connected to the position error generator 1 to discriminate whether an overshoot is allowed or not by a discriminator 12, whose output operates a coefficient setter 9 for setting the conversion coefficient of a track follow-up control system to apply the coefficient to the varying device 6. Further, they are brought under the control of a test controller 10. Therefore, the extent of the overshoot is set and held automatically to obtain the best transfer ratio for positioning, and the control is exercised at a high speed with high precision.
JP4990581A 1981-04-02 1981-04-02 Servo positioning mechanism of magnetic disk device Pending JPS57164476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4990581A JPS57164476A (en) 1981-04-02 1981-04-02 Servo positioning mechanism of magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4990581A JPS57164476A (en) 1981-04-02 1981-04-02 Servo positioning mechanism of magnetic disk device

Publications (1)

Publication Number Publication Date
JPS57164476A true JPS57164476A (en) 1982-10-09

Family

ID=12844019

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4990581A Pending JPS57164476A (en) 1981-04-02 1981-04-02 Servo positioning mechanism of magnetic disk device

Country Status (1)

Country Link
JP (1) JPS57164476A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61196778A (en) * 1985-02-22 1986-08-30 Matsushita Electric Ind Co Ltd Controller of motor
JPS61153157U (en) * 1985-03-12 1986-09-22
JPS6479813A (en) * 1987-09-21 1989-03-24 Matsushita Electric Ind Co Ltd Positioning controller
JPH03149607A (en) * 1989-11-07 1991-06-26 Mitsubishi Electric Corp Servo motor control device
US5305161A (en) * 1990-06-29 1994-04-19 Digital Equipment Corporation Adaptive track seeking for disk drives

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61196778A (en) * 1985-02-22 1986-08-30 Matsushita Electric Ind Co Ltd Controller of motor
JPS61153157U (en) * 1985-03-12 1986-09-22
JPH0433578Y2 (en) * 1985-03-12 1992-08-11
JPS6479813A (en) * 1987-09-21 1989-03-24 Matsushita Electric Ind Co Ltd Positioning controller
JPH03149607A (en) * 1989-11-07 1991-06-26 Mitsubishi Electric Corp Servo motor control device
US5305161A (en) * 1990-06-29 1994-04-19 Digital Equipment Corporation Adaptive track seeking for disk drives

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