JPS5680856A - Head positioning control system - Google Patents
Head positioning control systemInfo
- Publication number
- JPS5680856A JPS5680856A JP15860379A JP15860379A JPS5680856A JP S5680856 A JPS5680856 A JP S5680856A JP 15860379 A JP15860379 A JP 15860379A JP 15860379 A JP15860379 A JP 15860379A JP S5680856 A JPS5680856 A JP S5680856A
- Authority
- JP
- Japan
- Prior art keywords
- deceleration
- cylinder
- target
- acceleration
- current
- 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
Abstract
PURPOSE: To move to the target position stably and accurately by setting the acceleration and deceleration sections in advance in accordance with the difference between the present position and the target position, computing the deceleration current from the acceleration time and correcting the deceleration current from the deceleration time.
CONSTITUTION: The cylinder number to be moved is given to an input port 7 and the moving instruction is input from the input port 5. Whereupon, the microprocessor μ-CPU1 compares the present cylinder of the counter 26 with the target cylinder and the acceleration current value is output through an output port 10. μ-CPU1 monitors the present cylinder position of the counter 26 constantly, and when the difference up to the target cylinder becomes a constant value, it is shifted to the deceleration mode to carry out the constant current driving. Further, in order to compensate the error due to this open loop control, the deceleration current value is accurately corrected through a servo compensating circuit 17. By such construction, the cylinder number is moved to the target position stably and highly accurately to perform a precise positioning.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15860379A JPS5680856A (en) | 1979-12-06 | 1979-12-06 | Head positioning control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15860379A JPS5680856A (en) | 1979-12-06 | 1979-12-06 | Head positioning control system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5680856A true JPS5680856A (en) | 1981-07-02 |
JPH0146939B2 JPH0146939B2 (en) | 1989-10-11 |
Family
ID=15675299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15860379A Granted JPS5680856A (en) | 1979-12-06 | 1979-12-06 | Head positioning control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5680856A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60101617A (en) * | 1983-11-07 | 1985-06-05 | Matsushita Electric Ind Co Ltd | Digital servo controller |
JPS61136112A (en) * | 1984-11-05 | 1986-06-24 | イング・チイ・オリベツチ・アンド・チイ・エス・ピ−・ア | Circuit for actuating electric motor especially for electronic typewriter |
JPS61152104U (en) * | 1984-12-05 | 1986-09-20 | ||
US4786994A (en) * | 1984-11-29 | 1988-11-22 | Cii Honeywell Bull | Method of and apparatus for controlling the displacement of a movable system driven by an electric motor |
JPH01204112A (en) * | 1988-02-09 | 1989-08-16 | Nec Corp | Speed controller |
EP0614174A2 (en) * | 1989-01-10 | 1994-09-07 | Fujitsu Limited | Servo circuit for magnetic disk apparatus |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0327179U (en) * | 1989-07-27 | 1991-03-19 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4942054A (en) * | 1972-08-29 | 1974-04-20 | ||
JPS5383716A (en) * | 1976-12-29 | 1978-07-24 | Fujitsu Ltd | System for positioning magnetic device |
-
1979
- 1979-12-06 JP JP15860379A patent/JPS5680856A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4942054A (en) * | 1972-08-29 | 1974-04-20 | ||
JPS5383716A (en) * | 1976-12-29 | 1978-07-24 | Fujitsu Ltd | System for positioning magnetic device |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60101617A (en) * | 1983-11-07 | 1985-06-05 | Matsushita Electric Ind Co Ltd | Digital servo controller |
JPS61136112A (en) * | 1984-11-05 | 1986-06-24 | イング・チイ・オリベツチ・アンド・チイ・エス・ピ−・ア | Circuit for actuating electric motor especially for electronic typewriter |
US4786994A (en) * | 1984-11-29 | 1988-11-22 | Cii Honeywell Bull | Method of and apparatus for controlling the displacement of a movable system driven by an electric motor |
JPS61152104U (en) * | 1984-12-05 | 1986-09-20 | ||
JPH054007Y2 (en) * | 1984-12-05 | 1993-02-01 | ||
JPH01204112A (en) * | 1988-02-09 | 1989-08-16 | Nec Corp | Speed controller |
EP0614174A2 (en) * | 1989-01-10 | 1994-09-07 | Fujitsu Limited | Servo circuit for magnetic disk apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPH0146939B2 (en) | 1989-10-11 |
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