JPS5680856A - Head positioning control system - Google Patents

Head positioning control system

Info

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
Application number
JP15860379A
Other languages
Japanese (ja)
Other versions
JPH0146939B2 (en
Inventor
Yoshibumi Mizoshita
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15860379A priority Critical patent/JPS5680856A/en
Publication of JPS5680856A publication Critical patent/JPS5680856A/en
Publication of JPH0146939B2 publication Critical patent/JPH0146939B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Of Position Or Direction (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)

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
JP15860379A 1979-12-06 1979-12-06 Head positioning control system Granted JPS5680856A (en)

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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60101617A (en) * 1983-11-07 1985-06-05 Matsushita Electric Ind Co Ltd Digital servo control device
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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0327179U (en) * 1989-07-27 1991-03-19

Citations (2)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60101617A (en) * 1983-11-07 1985-06-05 Matsushita Electric Ind Co Ltd Digital servo control device
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
JPH01204112A (en) * 1988-02-09 1989-08-16 Nec Corp Speed controller

Also Published As

Publication number Publication date
JPH0146939B2 (en) 1989-10-11

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