JPS5790716A - Positioning controller - Google Patents

Positioning controller

Info

Publication number
JPS5790716A
JPS5790716A JP16749380A JP16749380A JPS5790716A JP S5790716 A JPS5790716 A JP S5790716A JP 16749380 A JP16749380 A JP 16749380A JP 16749380 A JP16749380 A JP 16749380A JP S5790716 A JPS5790716 A JP S5790716A
Authority
JP
Japan
Prior art keywords
ref
signal
position control
logic
level
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
JP16749380A
Other languages
Japanese (ja)
Other versions
JPS6217245B2 (en
Inventor
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 JP16749380A priority Critical patent/JPS5790716A/en
Publication of JPS5790716A publication Critical patent/JPS5790716A/en
Publication of JPS6217245B2 publication Critical patent/JPS6217245B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation

Abstract

PURPOSE:To increase the reliability for the recording and reproducing operations of a magnetic disk, etc., by controlling the shifting speed immediately at a low level in case when the vibration amplitude of a mobile member in the position control section after the moving action is over exceeds the allowance level. CONSTITUTION:A position signal A is compared with the positive and negative reference voltage Ref+ and Ref- through comparators CMP1 and CMP2 respectively. When the signal A is set at the middle between the voltage Ref+ and Ref-, logic 1 is supplied to an inverting circuit NOT from a power supply +E. In case when the signal is not at the middle of the voltage Ref+ and Ref-, logic O is supplied to the circuit NOT. Then an AND gate AND delivers H 1 to set an FF when both an output G and a selection signal F for the position control and speed control are set at 1, i.e. when the shift of position during the position control becomes higher than a prescribed level. Then the next shift is started. Thus the desired speed is limited to a low level by an output L.
JP16749380A 1980-11-28 1980-11-28 Positioning controller Granted JPS5790716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16749380A JPS5790716A (en) 1980-11-28 1980-11-28 Positioning controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16749380A JPS5790716A (en) 1980-11-28 1980-11-28 Positioning controller

Publications (2)

Publication Number Publication Date
JPS5790716A true JPS5790716A (en) 1982-06-05
JPS6217245B2 JPS6217245B2 (en) 1987-04-16

Family

ID=15850695

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16749380A Granted JPS5790716A (en) 1980-11-28 1980-11-28 Positioning controller

Country Status (1)

Country Link
JP (1) JPS5790716A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01204112A (en) * 1988-02-09 1989-08-16 Nec Corp Speed controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01204112A (en) * 1988-02-09 1989-08-16 Nec Corp Speed controller

Also Published As

Publication number Publication date
JPS6217245B2 (en) 1987-04-16

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