JPS5491208A - Speed control system - Google Patents

Speed control system

Info

Publication number
JPS5491208A
JPS5491208A JP15731177A JP15731177A JPS5491208A JP S5491208 A JPS5491208 A JP S5491208A JP 15731177 A JP15731177 A JP 15731177A JP 15731177 A JP15731177 A JP 15731177A JP S5491208 A JPS5491208 A JP S5491208A
Authority
JP
Japan
Prior art keywords
circuit
speed
linear motor
signal
position detection
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
JP15731177A
Other languages
Japanese (ja)
Other versions
JPS5858690B2 (en
Inventor
Masao Fujiki
Yasuyoshi Oda
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP52157311A priority Critical patent/JPS5858690B2/en
Publication of JPS5491208A publication Critical patent/JPS5491208A/en
Publication of JPS5858690B2 publication Critical patent/JPS5858690B2/en
Expired 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
    • G11B21/081—Access to indexed tracks or parts of continuous track

Landscapes

  • Moving Of Head For Track Selection And Changing (AREA)
  • Feedback Control In General (AREA)
  • Control Of Position Or Direction (AREA)
  • Control Of Velocity Or Acceleration (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Linear Motors (AREA)

Abstract

PURPOSE:To simplify circuit constitution and improve follow-up characteristics by controlling the positions and speed signals fed back to the servo circuit of a head- positioning linear motor with low-pass- and high-pass filters. CONSTITUTION:When the voltage having been set according to acceleration, steady speed and deceleration is applied to the voice coil of a linear motor via addaptability phase advance circuit 11, position detection signals are generated from position detection circuits 12, 14 and a speed signal is generated from a speed detection circuit 13 through differentiation of the position detection signals. When the change of the speed signal at the acceleration and deceleration of the linear motor is large, the speed signal from the circuit 13 is cut off with an LPF 16 and servo controlling by the feedback of the position signal outputted by the circuit 14 via HPF 15 is accomplished, by which the head is moved to the neighborhood of the target track. When the speed of the linear motor becomes steady, the position signal from the circuit 14 of less change is cut off with an HPF 14 and the servo controlling by the feedback of the speed signal is accomplished.
JP52157311A 1977-12-28 1977-12-28 Speed control method Expired JPS5858690B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52157311A JPS5858690B2 (en) 1977-12-28 1977-12-28 Speed control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52157311A JPS5858690B2 (en) 1977-12-28 1977-12-28 Speed control method

Publications (2)

Publication Number Publication Date
JPS5491208A true JPS5491208A (en) 1979-07-19
JPS5858690B2 JPS5858690B2 (en) 1983-12-27

Family

ID=15646890

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52157311A Expired JPS5858690B2 (en) 1977-12-28 1977-12-28 Speed control method

Country Status (1)

Country Link
JP (1) JPS5858690B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS576901A (en) * 1980-05-08 1982-01-13 Storage Technology Corp Automatic constant band width gain controller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS576901A (en) * 1980-05-08 1982-01-13 Storage Technology Corp Automatic constant band width gain controller
JPH027081B2 (en) * 1980-05-08 1990-02-15 Storage Technology Corp

Also Published As

Publication number Publication date
JPS5858690B2 (en) 1983-12-27

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