JPS5597610A - Positioning system - Google Patents

Positioning system

Info

Publication number
JPS5597610A
JPS5597610A JP516979A JP516979A JPS5597610A JP S5597610 A JPS5597610 A JP S5597610A JP 516979 A JP516979 A JP 516979A JP 516979 A JP516979 A JP 516979A JP S5597610 A JPS5597610 A JP S5597610A
Authority
JP
Japan
Prior art keywords
offset
head
target
fine control
signal
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
JP516979A
Other languages
Japanese (ja)
Other versions
JPS584362B2 (en
Inventor
Katsuji Kobayashi
Toshio Negoro
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 JP516979A priority Critical patent/JPS584362B2/en
Publication of JPS5597610A publication Critical patent/JPS5597610A/en
Publication of JPS584362B2 publication Critical patent/JPS584362B2/en
Expired 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 improve the transient properties at the offset action time by supplying the offset signal to the fine control system in the form of the target value and via the n-order filter and thus giving the control to the minute deflection.
CONSTITUTION: In case servo head 14 is shifted, change-over switch 6a is first turned toward differential amplifier 4. And target speed generation circuit 2 delivers the target speed signal which is decided by the remaining distance to shift carriage 11. When head 14 reaches the position where the prescribed conditions is satisfied, switch 6a is turned toward error signal production circuit 5 to perform the fine control with head 14 stopping at the target position. In case the accurate positioning is not given to read/write head 13 at the data track corresponding to the target point, the offset signal is supplied to circuit 5 via n-order filter 3 in order to give the control of the minute deflection. Thus the offset action is given. In such way, the transient properties can be improved at the offset action time without altering the main loop of the fine control system.
COPYRIGHT: (C)1980,JPO&Japio
JP516979A 1979-01-19 1979-01-19 Positioning method Expired JPS584362B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP516979A JPS584362B2 (en) 1979-01-19 1979-01-19 Positioning method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP516979A JPS584362B2 (en) 1979-01-19 1979-01-19 Positioning method

Publications (2)

Publication Number Publication Date
JPS5597610A true JPS5597610A (en) 1980-07-25
JPS584362B2 JPS584362B2 (en) 1983-01-26

Family

ID=11603728

Family Applications (1)

Application Number Title Priority Date Filing Date
JP516979A Expired JPS584362B2 (en) 1979-01-19 1979-01-19 Positioning method

Country Status (1)

Country Link
JP (1) JPS584362B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5795199A (en) * 1980-10-15 1982-06-12 Minnesota Mining & Mfg Device for controlling transducer position controlling motor
JPH01150915A (en) * 1987-12-08 1989-06-13 Fujitsu Ltd Servo positioning control device
JPH01150916A (en) * 1987-12-08 1989-06-13 Fujitsu Ltd Servo positioning control device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6250053U (en) * 1985-09-19 1987-03-27

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5795199A (en) * 1980-10-15 1982-06-12 Minnesota Mining & Mfg Device for controlling transducer position controlling motor
JPH01150915A (en) * 1987-12-08 1989-06-13 Fujitsu Ltd Servo positioning control device
JPH01150916A (en) * 1987-12-08 1989-06-13 Fujitsu Ltd Servo positioning control device

Also Published As

Publication number Publication date
JPS584362B2 (en) 1983-01-26

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