DE2711976B2 - Magnetkopfeinheit - Google Patents

Magnetkopfeinheit

Info

Publication number
DE2711976B2
DE2711976B2 DE2711976A DE2711976A DE2711976B2 DE 2711976 B2 DE2711976 B2 DE 2711976B2 DE 2711976 A DE2711976 A DE 2711976A DE 2711976 A DE2711976 A DE 2711976A DE 2711976 B2 DE2711976 B2 DE 2711976B2
Authority
DE
Germany
Prior art keywords
magnetic head
deflection
signal
double
piezoelectric
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.)
Ceased
Application number
DE2711976A
Other languages
German (de)
English (en)
Other versions
DE2711976A1 (de
Inventor
David E. Redwood City Calif. Brown (V.St.A.)
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.)
Ampex Corp
Original Assignee
Ampex 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 Ampex Corp filed Critical Ampex Corp
Publication of DE2711976A1 publication Critical patent/DE2711976A1/de
Publication of DE2711976B2 publication Critical patent/DE2711976B2/de
Ceased 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
    • G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/584—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes
    • G11B5/588—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes by controlling the position of the rotating heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0603—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a piezoelectric bender, e.g. bimorph
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/101—Piezoelectric or electrostrictive devices with electrical and mechanical input and output, e.g. having combined actuator and sensor parts
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/204—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
    • H10N30/2041—Beam type
    • H10N30/2042—Cantilevers, i.e. having one fixed end

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Control Of Position Or Direction (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
DE2711976A 1976-03-19 1977-03-18 Magnetkopfeinheit Ceased DE2711976B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66865376A 1976-03-19 1976-03-19
US05/677,683 US4093885A (en) 1976-03-19 1976-04-16 Transducer assembly vibration sensor

Publications (2)

Publication Number Publication Date
DE2711976A1 DE2711976A1 (de) 1977-09-22
DE2711976B2 true DE2711976B2 (de) 1980-04-24

Family

ID=27099968

Family Applications (2)

Application Number Title Priority Date Filing Date
DE2711976A Ceased DE2711976B2 (de) 1976-03-19 1977-03-18 Magnetkopfeinheit
DE7708482U Expired DE7708482U1 (de) 1976-03-19 1977-03-18 Magnetkopfeinheit für Videobandaufzeichnungsgeräte

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE7708482U Expired DE7708482U1 (de) 1976-03-19 1977-03-18 Magnetkopfeinheit für Videobandaufzeichnungsgeräte

Country Status (10)

Country Link
US (1) US4093885A (enExample)
JP (1) JPS5818686B2 (enExample)
AT (1) AT388465B (enExample)
BE (1) BE852622A (enExample)
CA (1) CA1125909A (enExample)
DE (2) DE2711976B2 (enExample)
FR (1) FR2345050A1 (enExample)
GB (1) GB1579856A (enExample)
IT (1) IT1082173B (enExample)
NL (1) NL7702989A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3414054A1 (de) * 1983-04-14 1985-02-14 Victor Company Of Japan, Ltd., Yokohama, Kanagawa Videokopf-lagesteuerung

Families Citing this family (60)

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US4288824A (en) * 1975-10-14 1981-09-08 Sony Corporation Deflectable transducer mounting with damper for video signal reproducing apparatus
JPS52152712A (en) * 1976-06-15 1977-12-19 Victor Co Of Japan Ltd Magnetic recording and reproducing apparatus
JPS588052B2 (ja) * 1976-11-11 1983-02-14 松下電器産業株式会社 回転磁気ヘツド装置
JPS54307U (enExample) * 1977-06-04 1979-01-05
JPS5492308A (en) * 1977-12-29 1979-07-21 Sony Corp Head tracking device in recorder-reproducer
US4169276A (en) * 1977-10-17 1979-09-25 Ampex Corporation Drive circuit for controlling a movable magnetic head
DE2747851A1 (de) * 1977-10-26 1979-05-03 Ted Bildplatten Schaltung fuer die mechanische aufzeichnung eines signals, insbesondere fuer eine bildplatte
US4318142A (en) * 1978-03-23 1982-03-02 Ampex Corporation Automatically compensated movable head servo circuit and method
CA1147456A (en) * 1978-03-23 1983-05-31 Raymond F. Ravizza Automatically compensated movable head servo circuit and method
US4197564A (en) * 1978-03-23 1980-04-08 Ampex Corporation Automatically calibrated RF envelope detector circuit
US4215362A (en) * 1978-03-23 1980-07-29 Ampex Corporation Track selection method and apparatus
US4319289A (en) * 1978-03-23 1982-03-09 Ampex Corporation Movable head automatic position acquisition circuit and method
US4163993A (en) * 1978-03-23 1979-08-07 Ampex Corporation Continuous slow motion automatic tracking system
NL7805804A (nl) * 1978-05-29 1979-12-03 Philips Nv Inrichting voor het aanleggen van een stuurspanning over een pieezo-elektrisch positioneringselement.
JPS5564631A (en) * 1978-11-09 1980-05-15 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device
US4285017A (en) * 1979-02-05 1981-08-18 International Business Machines Corporation Stripe following in a helical scan device
DE2950627A1 (de) * 1979-12-15 1981-06-19 Philips Patentverwaltung Gmbh, 2000 Hamburg Anordnung zur messung von oberflaechenprofilen
JPS56153527A (en) * 1980-04-12 1981-11-27 Hitachi Denshi Ltd Piezoelectric bimorph type transducer
US4485414A (en) * 1980-07-07 1984-11-27 Ampex Corporation Servo system for positioning a movable transducing head assembly
DE3241601A1 (de) * 1982-08-19 1984-02-23 Siemens AG, 1000 Berlin und 8000 München Elektrisch zu betaetigendes stellglied
JPS5994103A (ja) * 1982-11-19 1984-05-30 Nec Corp 電気機械変換器の制御装置
JPS59188657U (ja) * 1983-06-01 1984-12-14 オムロン株式会社 圧電素子の駆動回路
JPH0626039B2 (ja) * 1983-10-31 1994-04-06 ソニー株式会社 磁気ヘツドの変位駆動装置
JPS6085753U (ja) * 1983-11-18 1985-06-13 日本ビクター株式会社 磁気テ−プ記録再生装置
JPS6131576U (ja) * 1984-07-30 1986-02-25 日野自動車株式会社 スポツト溶接ガン
US4647999A (en) * 1984-12-03 1987-03-03 Datatape Inc. Frame for positioning transducing head
JPH0695377B2 (ja) * 1985-03-12 1994-11-24 ソニー株式会社 バイモルフヘツドのバイモルフ駆動装置
FR2608825B1 (fr) * 1986-12-19 1994-12-30 Enertec Dispositif pour la detection de la position d'une tete magnetique
US5057953A (en) * 1988-03-31 1991-10-15 Applied Magnetics Corporation Head slider suspension assembly load beam having a fundamental mode vibration characteristic in the range of about 2000 hertz to about 4000 hertz
JPH06105497B2 (ja) * 1988-06-28 1994-12-21 松下電器産業株式会社 記録再生装置の電子編集装置
US5448540A (en) * 1990-09-21 1995-09-05 Victor Company Of Japan, Ltd. Device for detecting the position of a recording/reproducing element
US5371427A (en) * 1991-03-12 1994-12-06 Nikon Corporation Driver for piezoelectric actuator and shutter control device utilizing piezoelectric device
US5343348A (en) * 1991-04-03 1994-08-30 Victor Company Of Japan, Ltd. Actuator for displacing a magnetic head
JP2653275B2 (ja) * 1991-05-24 1997-09-17 日本ビクター株式会社 回転磁気ヘッドの位置検出装置
DE4444070C1 (de) * 1994-12-10 1996-08-08 Fraunhofer Ges Forschung Mikromechanisches Element
JP3394658B2 (ja) * 1996-08-30 2003-04-07 理化学研究所 圧電性物質の弾性率の制御方法及び制御装置
US6064540A (en) * 1998-03-30 2000-05-16 International Business Machines Corporation Active control for stabilizing a servo-controlled actuator system
US20040046484A1 (en) * 2002-09-04 2004-03-11 Schiller Peter J. Interface electronics for piezoelectric devices
US7141911B2 (en) * 2002-11-15 2006-11-28 Matsushita Electric Industrial Co., Ltd. Driving method of piezoelectric actuator, piezoelectric actuator, and disk recording and reproducing apparatus using the same
US8247946B2 (en) 2004-06-14 2012-08-21 Massachusetts Institute Of Technology Electrochemical actuator
JP2008503059A (ja) 2004-06-14 2008-01-31 マサチューセッツ・インスティテュート・オブ・テクノロジー 電気化学的方法、デバイス、および構造体
US7872396B2 (en) * 2004-06-14 2011-01-18 Massachusetts Institute Of Technology Electrochemical actuator
US7994686B2 (en) * 2004-06-14 2011-08-09 Massachusetts Institute Of Technology Electrochemical methods, devices, and structures
US7999435B2 (en) * 2004-06-14 2011-08-16 Massachusetts Institute Of Technology Electrochemical actuator
DE102005024192A1 (de) * 2005-05-25 2006-11-30 Siemens Ag Piezoelektrischer Biegewandler mit Sensorelement zum Erfassen einer Auslenkung des Biegewandlers, Verfahren zum Erfassen der Auslenkung des Biegewandlers und Verwendung der erfassten Auslenkung
DE102006046593B4 (de) * 2006-09-30 2009-12-10 Deutsches Zentrum für Luft- und Raumfahrt e.V. Vorrichtung zur Reduktion von Schwingungen einer Struktur
EP2178584A2 (en) * 2007-07-26 2010-04-28 Entra Pharmaceuticals Inc. Skin-patch pump comprising a changing-volume electrochemical actuator
EP2262094A4 (en) * 2008-04-01 2012-12-12 Murata Manufacturing Co PIEZOELECTRIC POWER GENERATION UNIT
DE102009038306A1 (de) * 2009-08-21 2011-02-24 Albert-Ludwigs-Universität Freiburg Frequenzabstimmbarer Resonator und Verfahren zum Betreiben eines solchen
US8886491B2 (en) * 2010-04-30 2014-11-11 Hunter Engineering Company Auto-calibrating wheel balancer force transducer
WO2011140359A2 (en) 2010-05-05 2011-11-10 Springleaf Therapeutics, Inc. Systems and methods for delivering a therapeutic agent
CA2821979A1 (en) 2010-12-17 2012-06-21 Yet-Ming Chiang Electrochemical actuators
US9741376B1 (en) 2013-03-18 2017-08-22 Magnecomp Corporation Multi-layer PZT microactuator having a poled but inactive PZT constraining layer
US11205449B2 (en) 2013-03-18 2021-12-21 Magnecomp Corporation Multi-layer PZT microacuator with active PZT constraining layers for a DSA suspension
US9330698B1 (en) 2013-03-18 2016-05-03 Magnecomp Corporation DSA suspension having multi-layer PZT microactuator with active PZT constraining layers
US9330694B1 (en) * 2013-03-18 2016-05-03 Magnecomp Corporation HDD microactuator having reverse poling and active restraining layer
US10607642B2 (en) 2013-03-18 2020-03-31 Magnecomp Corporation Multi-layer PZT microactuator with active PZT constraining layers for a DSA suspension
WO2015019981A1 (ja) * 2013-08-06 2015-02-12 株式会社村田製作所 押圧検出センサ
US10128431B1 (en) 2015-06-20 2018-11-13 Magnecomp Corporation Method of manufacturing a multi-layer PZT microactuator using wafer-level processing
CN110137340B (zh) * 2019-04-08 2023-06-20 杭州士兰微电子股份有限公司 传感器组件的极化方法

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US2594841A (en) * 1945-08-11 1952-04-29 Brush Dev Co Piezoelectric transducer with pushpull and feedback circuit
BE508692A (enExample) * 1951-01-26
US2849075A (en) * 1953-03-23 1958-08-26 Socony Mobil Oil Co Inc Self-sustaining oscillatory acoustic well logging
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DE1077441B (de) * 1959-04-03 1960-03-10 Sennheiser Electronic Taststift fuer Feintaster oder Oberflaechenpruefgeraet
US3167667A (en) * 1962-08-08 1965-01-26 Lear Siegler Inc Piezoelectric force controller
US3336529A (en) * 1962-12-03 1967-08-15 Lockheed Aircraft Corp Vibrating reed frequency responsive device
US3478246A (en) * 1967-05-05 1969-11-11 Litton Precision Prod Inc Piezoelectric bimorph driven tuners for electron discharge devices
US3526726A (en) * 1967-09-27 1970-09-01 Ampex Piezoelectric transducer assembly for positioning a magnetic record/reproduce head
US3481014A (en) * 1968-01-04 1969-12-02 Litton Precision Prod Inc Method of making a high temperature,high vacuum piezoelectric motor mechanism
GB1381727A (en) * 1971-08-26 1975-01-29 English Electric Co Ltd Devices incorporating cavity resonators
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3414054A1 (de) * 1983-04-14 1985-02-14 Victor Company Of Japan, Ltd., Yokohama, Kanagawa Videokopf-lagesteuerung

Also Published As

Publication number Publication date
JPS5818686B2 (ja) 1983-04-14
FR2345050B1 (enExample) 1983-04-01
CA1125909A (en) 1982-06-15
GB1579856A (en) 1980-11-26
DE2711976A1 (de) 1977-09-22
ATA188277A (de) 1983-10-15
US4093885A (en) 1978-06-06
AT388465B (de) 1989-06-26
FR2345050A1 (fr) 1977-10-14
BE852622A (fr) 1977-07-18
JPS52117105A (en) 1977-10-01
IT1082173B (it) 1985-05-21
NL7702989A (nl) 1977-09-21
DE7708482U1 (de) 1988-07-28

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Legal Events

Date Code Title Description
8235 Patent refused