JPS5564663A - Track follow-up servomechanism of magnetic disk unit - Google Patents
Track follow-up servomechanism of magnetic disk unitInfo
- 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
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
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)
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 |
-
1978
- 1978-11-06 JP JP13591778A patent/JPS5564663A/en active Pending
Cited By (1)
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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