JPS5542306A - Speed control servo circuit of magnetic disc unit - Google Patents
Speed control servo circuit of magnetic disc unitInfo
- Publication number
- JPS5542306A JPS5542306A JP11333978A JP11333978A JPS5542306A JP S5542306 A JPS5542306 A JP S5542306A JP 11333978 A JP11333978 A JP 11333978A JP 11333978 A JP11333978 A JP 11333978A JP S5542306 A JPS5542306 A JP S5542306A
- Authority
- JP
- Japan
- Prior art keywords
- adder
- signal
- carriage
- error signal
- speed control
- 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.)
- Granted
Links
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
- Control Of Position Or Direction (AREA)
- Control Of Velocity Or Acceleration (AREA)
Abstract
PURPOSE: To stabilize operation under no influence of a high-frequency noise by operating the whole speed control circuit so that an error signal will be zero.
CONSTITUTION: The moment desired speed signal (a) is supplied to adder 201, error signal (d) appears at the terminal of adder 201. This error signal (d) changes into current signal (f) through differentiating circuit 202, etc., to move voice coil 5 in head positioning mechanism 204. In accordance with this, carriage 4 starts moving and the movement of carriage 4 is applied to adder 201 as carriage speed signal (b). A current flowing through voice coil 5 is applied to adder 201 as integal output C through current detector 206, etc. Carriage speed signal (b) and integral output (c) are reverse in polarity to desired speed signal (a). Therefore, adder 201 operates the whole circuit eliminating error signal (d), so that the operation can be stabilized under no influence of a high-frequency noise.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11333978A JPS6032907B2 (en) | 1978-09-14 | 1978-09-14 | Speed control servo circuit in magnetic disk device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11333978A JPS6032907B2 (en) | 1978-09-14 | 1978-09-14 | Speed control servo circuit in magnetic disk device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5542306A true JPS5542306A (en) | 1980-03-25 |
JPS6032907B2 JPS6032907B2 (en) | 1985-07-31 |
Family
ID=14609730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11333978A Expired JPS6032907B2 (en) | 1978-09-14 | 1978-09-14 | Speed control servo circuit in magnetic disk device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6032907B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57113120A (en) * | 1980-12-30 | 1982-07-14 | Fujitsu Ltd | Positioning control system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6034813U (en) * | 1983-08-17 | 1985-03-09 | 株式会社 イナミ | Microsurgery instruments |
-
1978
- 1978-09-14 JP JP11333978A patent/JPS6032907B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57113120A (en) * | 1980-12-30 | 1982-07-14 | Fujitsu Ltd | Positioning control system |
Also Published As
Publication number | Publication date |
---|---|
JPS6032907B2 (en) | 1985-07-31 |
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