DE2965621D1 - Electronic tachometer circuit - Google Patents

Electronic tachometer circuit

Info

Publication number
DE2965621D1
DE2965621D1 DE7979103350T DE2965621T DE2965621D1 DE 2965621 D1 DE2965621 D1 DE 2965621D1 DE 7979103350 T DE7979103350 T DE 7979103350T DE 2965621 T DE2965621 T DE 2965621T DE 2965621 D1 DE2965621 D1 DE 2965621D1
Authority
DE
Germany
Prior art keywords
tachometer circuit
electronic tachometer
electronic
circuit
tachometer
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.)
Expired
Application number
DE7979103350T
Other languages
German (de)
English (en)
Inventor
Edward Franklin Bradley
Francis Edward Mueller
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE2965621D1 publication Critical patent/DE2965621D1/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • G11B5/553—Details
    • G11B5/5547—"Seek" control and circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Linear Motors (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Control Of Position Or Direction (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
DE7979103350T 1978-09-29 1979-09-07 Electronic tachometer circuit Expired DE2965621D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/947,278 US4246536A (en) 1978-09-29 1978-09-29 Electronic velocity measurement device

Publications (1)

Publication Number Publication Date
DE2965621D1 true DE2965621D1 (en) 1983-07-14

Family

ID=25485877

Family Applications (1)

Application Number Title Priority Date Filing Date
DE7979103350T Expired DE2965621D1 (en) 1978-09-29 1979-09-07 Electronic tachometer circuit

Country Status (4)

Country Link
US (1) US4246536A (OSRAM)
EP (1) EP0009663B1 (OSRAM)
JP (1) JPS5548658A (OSRAM)
DE (1) DE2965621D1 (OSRAM)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321517A (en) * 1979-12-03 1982-03-23 Storage Technology Corporation Resonance suppression method
DE3203257A1 (de) * 1982-02-01 1983-08-11 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum bestimmen der gemeinsamen frequenz zweier unabhaengig veraenderlicher wechselgroessen, insbesondere bei einer drehfeldmaschine
JPS60101617A (ja) * 1983-11-07 1985-06-05 Matsushita Electric Ind Co Ltd デイジタルサ−ボ制御装置
JPS60177433U (ja) * 1984-05-04 1985-11-25 三菱電機株式会社 熱動素子
JPH0750116B2 (ja) * 1986-02-19 1995-05-31 株式会社日立製作所 回転情報出力装置
US4679103A (en) * 1986-04-29 1987-07-07 International Business Machines Corporation Digital servo control system for a data recording disk file
DE3641538A1 (de) * 1986-12-05 1988-06-09 Heidelberger Druckmasch Ag Einrichtung zum erfassen der drehzahl eines buerstenlosen gleichstrommotors
US4967291A (en) * 1988-11-02 1990-10-30 Miniscribe Corporation Method and apparatus for preventing an over-velocity error condition of a hard disk drive system
DE19524913A1 (de) * 1995-07-08 1997-01-09 Bosch Gmbh Robert Verfahren und Schaltungsanordnung zum Ermitteln der Drehzahl eines Gleichstrommotors
US7177106B2 (en) * 2001-02-26 2007-02-13 Matsushita Electric Industrial Co., Ltd. Disk storage apparatus
EP1316956A3 (en) * 2001-11-28 2004-07-21 Matsushita Electric Industrial Co., Ltd. Disk storage apparatus and disk storage apparatus control method
US7187142B2 (en) * 2005-05-25 2007-03-06 Rockwell Automation Technologies, Inc. Motor drive with velocity noise filter
US7109670B1 (en) * 2005-05-25 2006-09-19 Rockwell Automation Technologies, Inc. Motor drive with velocity-second compensation

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3351829A (en) * 1964-01-30 1967-11-07 Bofors Ab Stabilizing device for a control system
US3568059A (en) * 1969-01-21 1971-03-02 Information Storage Systems Electronic tachometer
US3839665A (en) * 1970-03-30 1974-10-01 A Gabor Apparatus measuring relative velocity of movable members including means to detect velocity from the position encoder
US3811091A (en) * 1972-08-24 1974-05-14 Itel Corp Electronic tachometer
GB1396834A (en) * 1973-01-31 1975-06-04 Ibm Data storage apparatus
US3820712A (en) * 1973-03-12 1974-06-28 Ibm Electronic tachometer
US3883894A (en) * 1973-10-19 1975-05-13 Storage Disk Corp Disk drive servo system
US3942114A (en) * 1974-10-15 1976-03-02 Keeling William E Speed detector and indicator for DC motors
US4030132A (en) * 1975-03-27 1977-06-14 Memorex Corporation Dual mode velocity servo control for a linear actuator motor
GB1499268A (en) * 1976-06-30 1978-01-25 Ibm Servo apparatus
GB1520350A (en) * 1976-12-22 1978-08-09 Ibm Data storage apparatus
US4138728A (en) * 1977-06-29 1979-02-06 International Business Machines Corporation Electronic tachometer with variable bandwidth differentiator
US4133011A (en) * 1977-12-23 1979-01-02 International Business Machines Corporation Sampled data positioning system employing a model of the physical system for time optimal control
US4168457A (en) * 1977-12-29 1979-09-18 Sperry Rand Corporation Self adaptive speed control system

Also Published As

Publication number Publication date
EP0009663A1 (en) 1980-04-16
JPS6315555B2 (OSRAM) 1988-04-05
JPS5548658A (en) 1980-04-07
EP0009663B1 (en) 1983-06-08
US4246536A (en) 1981-01-20

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee