IT8148922A0 - Sistema a correnti parassite per controllare la rotazione di pacchi dischi - Google Patents

Sistema a correnti parassite per controllare la rotazione di pacchi dischi

Info

Publication number
IT8148922A0
IT8148922A0 IT8148922A IT4892281A IT8148922A0 IT 8148922 A0 IT8148922 A0 IT 8148922A0 IT 8148922 A IT8148922 A IT 8148922A IT 4892281 A IT4892281 A IT 4892281A IT 8148922 A0 IT8148922 A0 IT 8148922A0
Authority
IT
Italy
Prior art keywords
eddish
rotation
control
current system
disc packs
Prior art date
Application number
IT8148922A
Other languages
English (en)
Other versions
IT1158047B (it
Inventor
Willard C Pearson
Original Assignee
Ampex
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 Ampex filed Critical Ampex
Publication of IT8148922A0 publication Critical patent/IT8148922A0/it
Application granted granted Critical
Publication of IT1158047B publication Critical patent/IT1158047B/it

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/0016—Control of angular speed of one shaft without controlling the prime mover
    • H02P29/0022—Controlling a brake between the prime mover and the load

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electric Motors In General (AREA)
  • Rotational Drive Of Disk (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
  • Control Of Velocity Or Acceleration (AREA)
IT48922/81A 1980-07-31 1981-07-17 Sistema a correnti parassite per controllare la rotazione di pacchi dischi IT1158047B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/174,042 US4355266A (en) 1980-07-31 1980-07-31 Eddy current servo system for controlling the rotation of disk packs

Publications (2)

Publication Number Publication Date
IT8148922A0 true IT8148922A0 (it) 1981-07-17
IT1158047B IT1158047B (it) 1987-02-18

Family

ID=22634548

Family Applications (1)

Application Number Title Priority Date Filing Date
IT48922/81A IT1158047B (it) 1980-07-31 1981-07-17 Sistema a correnti parassite per controllare la rotazione di pacchi dischi

Country Status (7)

Country Link
US (1) US4355266A (it)
JP (1) JPS5758270A (it)
BE (1) BE889786A (it)
DE (1) DE3128627C2 (it)
FR (1) FR2488024A1 (it)
GB (1) GB2080980B (it)
IT (1) IT1158047B (it)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047515A (ja) * 1983-08-26 1985-03-14 Victor Co Of Japan Ltd 同期引込判別回路
US4578625A (en) * 1983-12-21 1986-03-25 Computer Memories, Inc. Spindle drive control system
JPS60167688A (ja) * 1984-01-26 1985-08-31 Canon Inc 回転位相制御回路
US4627236A (en) * 1984-05-29 1986-12-09 Reynolds Metals Company Apparatus and method for controlling the speed of rotation of shaft
US4855654A (en) * 1985-03-16 1989-08-08 Canon Kabushiki Kaisha Rotary body drive device
US4816937A (en) * 1985-10-17 1989-03-28 Canon Kabushiki Kaisha Recording and/or reproduction apparatus capable of retaining start up information
DE3641407A1 (de) * 1986-12-04 1988-06-09 Thomson Brandt Gmbh Anordnung zur drehzahlregelung
JP2724142B2 (ja) * 1986-12-19 1998-03-09 株式会社リコー 回転速度信号発生装置
US5032776A (en) * 1988-11-10 1991-07-16 Unisys Corp. Attenuation filter
JP2002538570A (ja) 1999-02-22 2002-11-12 シーゲイト テクノロジー エルエルシー 再現性ランアウト・エラーの補償
JP2002544639A (ja) 1999-05-07 2002-12-24 シーゲイト テクノロジー エルエルシー ディスク記憶システムにおいて繰り返し学習制御装置を使用した反復性ランアウト補償
WO2001008139A1 (en) 1999-07-23 2001-02-01 Seagate Technology Llc Repeatable runout compensation using a learning algorithm with scheduled parameters
US6952320B1 (en) 1999-12-16 2005-10-04 Seagate Technology Llc Virtual tracks for repeatable runout compensation
CN114185370A (zh) * 2020-08-24 2022-03-15 广东博智林机器人有限公司 一种伺服***及其转速补偿方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB532911A (en) * 1938-09-27 1941-02-03 Philips Nv Improvements in devices for controlling the speed of a rotating body
US3268788A (en) * 1963-01-09 1966-08-23 Minnesota Mining & Mfg Phase difference speed control system
FR1363752A (fr) * 1963-07-19 1964-06-12 Philips Nv Dispositif de synchronisation
GB1201477A (en) * 1966-11-17 1970-08-05 Matsushita Electric Ind Co Ltd Rotation control device
AT275670B (de) * 1967-04-26 1969-11-10 Philips Nv Schaltungsanordnung zum In-Phase-Bringen und In- Phase-Halten eines Servoantriebes in Abhängigkeit von einem als Impulsfrequenz vorliegenden Referenzsignal zur Steuerung eines rotierenden Systems
US3629633A (en) * 1970-10-26 1971-12-21 Eaton Yale & Towne Controlled-velocity drive control
US3828168A (en) * 1972-03-31 1974-08-06 Eaton Corp Controlled velocity drive
JPS5062008A (it) * 1973-10-01 1975-05-27
US3893178A (en) * 1973-12-19 1975-07-01 Information Storage Systems Synchronization of multiple disc drives
AT332939B (de) * 1974-10-16 1976-10-25 Philips Nv Schaltungsanordnung zum in-phase-bringen eines servoantriebes fur ein rotierendes system
US3983316A (en) * 1975-03-17 1976-09-28 Rca Corporation Turntable speed control system
DE2715870B2 (de) * 1977-04-09 1981-07-16 Carl Schenck Ag, 6100 Darmstadt Verfahren zur schnellen Veränderung des Bremsmomentes einer Wirbelstrombremse und Vorrichtung zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
GB2080980B (en) 1984-08-22
GB2080980A (en) 1982-02-10
FR2488024A1 (fr) 1982-02-05
BE889786A (fr) 1981-11-16
FR2488024B1 (it) 1984-12-21
DE3128627C2 (de) 1985-01-31
US4355266A (en) 1982-10-19
JPS5758270A (en) 1982-04-07
DE3128627A1 (de) 1982-03-25
IT1158047B (it) 1987-02-18

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