IT1313389B1 - Sistema di controllo e pil0taggio di un attuatore elettromagnetico asingolo avvolgimento impiegante un unico amplificatore operazionale - Google Patents

Sistema di controllo e pil0taggio di un attuatore elettromagnetico asingolo avvolgimento impiegante un unico amplificatore operazionale

Info

Publication number
IT1313389B1
IT1313389B1 IT1999VA000019A ITVA990019A IT1313389B1 IT 1313389 B1 IT1313389 B1 IT 1313389B1 IT 1999VA000019 A IT1999VA000019 A IT 1999VA000019A IT VA990019 A ITVA990019 A IT VA990019A IT 1313389 B1 IT1313389 B1 IT 1313389B1
Authority
IT
Italy
Prior art keywords
control
operational amplifier
electromagnetic actuator
pilot system
actuator winding
Prior art date
Application number
IT1999VA000019A
Other languages
English (en)
Inventor
Roberto Peritore
Andrea Merello
Gianluca Ventura
Original Assignee
St Microelectronics Srl
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 St Microelectronics Srl filed Critical St Microelectronics Srl
Priority to IT1999VA000019A priority Critical patent/IT1313389B1/it
Publication of ITVA990019A0 publication Critical patent/ITVA990019A0/it
Priority to US09/609,857 priority patent/US6479954B1/en
Publication of ITVA990019A1 publication Critical patent/ITVA990019A1/it
Application granted granted Critical
Publication of IT1313389B1 publication Critical patent/IT1313389B1/it

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • 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
    • 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
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/032—Reciprocating, oscillating or vibrating motors
    • H02P25/034—Voice coil motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Control Of Electric Motors In General (AREA)
IT1999VA000019A 1999-07-07 1999-07-07 Sistema di controllo e pil0taggio di un attuatore elettromagnetico asingolo avvolgimento impiegante un unico amplificatore operazionale IT1313389B1 (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT1999VA000019A IT1313389B1 (it) 1999-07-07 1999-07-07 Sistema di controllo e pil0taggio di un attuatore elettromagnetico asingolo avvolgimento impiegante un unico amplificatore operazionale
US09/609,857 US6479954B1 (en) 1999-07-07 2000-07-05 Control and drive system for a single winding electromagnetic actuator employing a single multifunction operational amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1999VA000019A IT1313389B1 (it) 1999-07-07 1999-07-07 Sistema di controllo e pil0taggio di un attuatore elettromagnetico asingolo avvolgimento impiegante un unico amplificatore operazionale

Publications (3)

Publication Number Publication Date
ITVA990019A0 ITVA990019A0 (it) 1999-07-07
ITVA990019A1 ITVA990019A1 (it) 2001-01-07
IT1313389B1 true IT1313389B1 (it) 2002-07-23

Family

ID=11423528

Family Applications (1)

Application Number Title Priority Date Filing Date
IT1999VA000019A IT1313389B1 (it) 1999-07-07 1999-07-07 Sistema di controllo e pil0taggio di un attuatore elettromagnetico asingolo avvolgimento impiegante un unico amplificatore operazionale

Country Status (2)

Country Link
US (1) US6479954B1 (it)
IT (1) IT1313389B1 (it)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7327103B1 (en) * 2001-08-31 2008-02-05 Maxtor Corporation Driver and method for control of voice coil motor in disk drive
US6826007B1 (en) * 2002-08-30 2004-11-30 Western Digital Technologies, Inc. Disk drive using dual slope integrator to extract velocity of an actuator arm from a back EMF voltage
ITMI20021867A1 (it) * 2002-08-30 2004-02-29 St Microelectronics Srl Amplificatore di transconduttanza per carichi induttivi
US7392491B2 (en) * 2003-03-14 2008-06-24 Combustion Dynamics Corp. Systems and methods for operating an electromagnetic actuator
US6966040B2 (en) * 2003-03-14 2005-11-15 Combustion Dynamics Corp. Systems and methods for operating an electromagnetic actuator
EP1641116A1 (en) * 2004-09-27 2006-03-29 STMicroelectronics S.r.l. Reduced hardware control circuit device with current loop for broad band hard disk drive applications
US7227321B1 (en) * 2005-02-09 2007-06-05 Marvell International Ltd. System and method for detecting back electromotive force with automatic pole calibration
KR100652436B1 (ko) * 2005-10-11 2006-12-01 삼성전자주식회사 하드디스크 드라이브의 레퍼런스 서보 신호 기록 방법 및이에 적합한 장치
US7522368B2 (en) * 2006-04-10 2009-04-21 Texas Instruments Incorporated Differential voice coil motor control
US7633707B2 (en) * 2008-02-05 2009-12-15 Samsung Electronics Co., Ltd. Passive test circuit used to determine a back EMF of a voice coil motor during application of a bias voltage
IT1392043B1 (it) * 2008-09-12 2012-02-09 St Microelectronics Srl Circuito di rilevazione di corrente per applicazioni pwm con modulazione a larghezza d'impulso e relativo processo
DE102017214474A1 (de) * 2017-08-18 2019-02-21 Dialog Semiconductor (Uk) Limited Aktuator mit inhärentem Positionssensor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5631527A (en) * 1994-09-06 1997-05-20 Sgs-Thomson Microelectronics, Inc. Voice coil motor feedback control circuit
US5838515A (en) * 1996-04-30 1998-11-17 Quantum Corporation PWM/linear driver for disk drive voice coil actuator

Also Published As

Publication number Publication date
US6479954B1 (en) 2002-11-12
ITVA990019A0 (it) 1999-07-07
ITVA990019A1 (it) 2001-01-07

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