JPS5564663A - Track follow-up servomechanism of magnetic disk unit - Google Patents

Track follow-up servomechanism of magnetic disk unit

Info

Publication number
JPS5564663A
JPS5564663A JP13591778A JP13591778A JPS5564663A JP S5564663 A JPS5564663 A JP S5564663A JP 13591778 A JP13591778 A JP 13591778A JP 13591778 A JP13591778 A JP 13591778A JP S5564663 A JPS5564663 A JP S5564663A
Authority
JP
Japan
Prior art keywords
transducer
microprocessor
magnetic disk
disk unit
track follow
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
JP13591778A
Other languages
Japanese (ja)
Inventor
Minoru Okada
Hiromi Hamaoka
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13591778A priority Critical patent/JPS5564663A/en
Publication of JPS5564663A publication Critical patent/JPS5564663A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To eliminate a seed-time error at the time of the track follow-up operation of a magnetic disk unit by automatically compensating the variation of the position error signal of a servo-transducer for speed detection by a microprocessor.
CONSTITUTION: At the zero-cross point of a position error signal of subtracter circuit 5, a pulse is generated 14 and then supplied to microprocessor 15 to set register 16. The output of this register 16 turns ON-OFF a switch in resistance selector 10 to determine the resistance value. Taking variation of the core, etc., of the transducer into consideration, microprocessor 15 selects the resistance value of resistor 10 on each start of the seek operation of transducer 2 to vary the control voltage of AGC circuit 3, thereby elminating an influence of a difference in gradient between internal and external circumferences. Consequently, a seek-time error can be removed.
COPYRIGHT: (C)1980,JPO&Japio
JP13591778A 1978-11-06 1978-11-06 Track follow-up servomechanism of magnetic disk unit Pending JPS5564663A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13591778A JPS5564663A (en) 1978-11-06 1978-11-06 Track follow-up servomechanism of magnetic disk unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13591778A JPS5564663A (en) 1978-11-06 1978-11-06 Track follow-up servomechanism of magnetic disk unit

Publications (1)

Publication Number Publication Date
JPS5564663A true JPS5564663A (en) 1980-05-15

Family

ID=15162855

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13591778A Pending JPS5564663A (en) 1978-11-06 1978-11-06 Track follow-up servomechanism of magnetic disk unit

Country Status (1)

Country Link
JP (1) JPS5564663A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH057631U (en) * 1991-01-29 1993-02-02 釜屋化学工業株式会社 Double-body container

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH057631U (en) * 1991-01-29 1993-02-02 釜屋化学工業株式会社 Double-body container

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