WO2009001746A1 - Position detecting device for actuator - Google Patents

Position detecting device for actuator Download PDF

Info

Publication number
WO2009001746A1
WO2009001746A1 PCT/JP2008/061219 JP2008061219W WO2009001746A1 WO 2009001746 A1 WO2009001746 A1 WO 2009001746A1 JP 2008061219 W JP2008061219 W JP 2008061219W WO 2009001746 A1 WO2009001746 A1 WO 2009001746A1
Authority
WO
WIPO (PCT)
Prior art keywords
scale
actuator
yoke
magnet
detecting device
Prior art date
Application number
PCT/JP2008/061219
Other languages
French (fr)
Japanese (ja)
Inventor
Hiroyuki Ono
Kei Ohno
Original Assignee
International Manufacturing And Engineering Services 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 International Manufacturing And Engineering Services Co., Ltd. filed Critical International Manufacturing And Engineering Services Co., Ltd.
Publication of WO2009001746A1 publication Critical patent/WO2009001746A1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/28—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with deflection of beams of light, e.g. for direct optical indication
    • G01D5/30—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with deflection of beams of light, e.g. for direct optical indication the beams of light being detected by photocells
    • 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
    • G11B5/5569—Track change, selection or acquisition by displacement of the head across disk tracks details of specially adapted mobile parts, e.g. electromechanical control devices
    • 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
    • G11B5/596—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 disks
    • G11B5/59677—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 disks with optical servo tracking
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/035—DC motors; Unipolar motors
    • H02K41/0352—Unipolar motors
    • H02K41/0354—Lorentz force motors, e.g. voice coil motors
    • H02K41/0358—Lorentz force motors, e.g. voice coil motors moving along a curvilinear path

Abstract

Provided is a position detecting device for an actuator, which is enabled to raise a servo frequency band by minimizing the distance between a scale and a drive unit thereby to raise a resonance frequency, so that it can improve a disturbance suppressing performance. The actuator has an arm and a voice coil motor across a pivot. The voice coil motor has its coil equipped with the scale confronting a magnet near the coil. The magnet confronting the scale and a yoke mounting the magnet are opened to have an optical path hole leading from the outside of the yoke to the scale. The actuator includes an optical detector for reading the scale by emitting a sensor light to the scale from the outside of the yoke through the optical path hole and by receiving the sensor light reflected on the scale or having passed through the scale.
PCT/JP2008/061219 2007-06-22 2008-06-19 Position detecting device for actuator WO2009001746A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007164847A JP2009002828A (en) 2007-06-22 2007-06-22 Device for detecting position of actuator
JP2007-164847 2007-06-22

Publications (1)

Publication Number Publication Date
WO2009001746A1 true WO2009001746A1 (en) 2008-12-31

Family

ID=40185564

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/061219 WO2009001746A1 (en) 2007-06-22 2008-06-19 Position detecting device for actuator

Country Status (2)

Country Link
JP (1) JP2009002828A (en)
WO (1) WO2009001746A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105071626A (en) * 2015-07-31 2015-11-18 瑞声光电科技(常州)有限公司 Linear vibration motor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06309825A (en) * 1993-04-27 1994-11-04 Internatl Business Mach Corp <Ibm> Method and equipment for writing in servo track of magnetic disk device
JPH07326142A (en) * 1994-05-27 1995-12-12 Internatl Business Mach Corp <Ibm> Servo write system used for data recording disk driving device
JP2001283544A (en) * 2000-03-31 2001-10-12 Matsushita Electric Ind Co Ltd Information recording and reproducing device, medium and information assembly
JP2002124047A (en) * 2000-10-11 2002-04-26 Sony Corp Magnetic disk device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4218521B2 (en) * 2003-12-26 2009-02-04 ソニー株式会社 Servo signal writing device and servo signal writing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06309825A (en) * 1993-04-27 1994-11-04 Internatl Business Mach Corp <Ibm> Method and equipment for writing in servo track of magnetic disk device
JPH07326142A (en) * 1994-05-27 1995-12-12 Internatl Business Mach Corp <Ibm> Servo write system used for data recording disk driving device
JP2001283544A (en) * 2000-03-31 2001-10-12 Matsushita Electric Ind Co Ltd Information recording and reproducing device, medium and information assembly
JP2002124047A (en) * 2000-10-11 2002-04-26 Sony Corp Magnetic disk device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105071626A (en) * 2015-07-31 2015-11-18 瑞声光电科技(常州)有限公司 Linear vibration motor
CN105071626B (en) * 2015-07-31 2017-12-22 瑞声光电科技(常州)有限公司 A kind of linear vibration electric motor

Also Published As

Publication number Publication date
JP2009002828A (en) 2009-01-08

Similar Documents

Publication Publication Date Title
WO2010132593A3 (en) Detecting component carrier tape splicing
MX2012006080A (en) System for doppler positioning of seismic sensors and method.
WO2008034518A3 (en) Concept for locating a position on a travel path
ATE494557T1 (en) CONTAINER GRIPPER EQUIPPED WITH A POSITION SENSOR
JP2009532005A5 (en)
JP2012120303A5 (en)
GB2472171A (en) A closure mechanism
WO2015048677A4 (en) Generating position error signal based on data tracks for magnetic data storage
FR2978883B1 (en) COMPACT POSITIONING ASSEMBLY COMPRISING AN ACTUATOR AND A SENSOR INTEGRATED IN THE ACTUATOR CYLINDER HEAD
DE502007002511D1 (en) ERROR IDENTIFICATION BY EVALUATING SIZES OF FIELD-ORIENTED CONTROL
GB0823088D0 (en) System and method for remote reading of resonant sensors
WO2007129059A3 (en) Drive arrangement
JP2013097168A5 (en)
WO2009071521A3 (en) Device for dynamically measuring the imbalance of the rotor of a turbocharger
WO2009001746A1 (en) Position detecting device for actuator
WO2009125360A3 (en) Optical pointing device having improved environmental resistance and reflected noise prevention and compensation
MXPA06011291A (en) Motorized closure operating device with electronic control system.
WO2009127337A3 (en) Microscope having focus-holding unit
TW200739232A (en) Auto focus lens module
WO2009028140A1 (en) Lens barrel
RU2006112157A (en) DEVICE AND METHOD FOR DETECTING A SIGNAL RELATING TO A COMPONENT
WO2009031542A1 (en) Magnetic driving device
WO2009086889A3 (en) Linear sensor
WO2009051198A1 (en) Holding member, driving device, pickup device and disc device
WO2011132920A3 (en) Voice coil motor for a camera module

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08777380

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08777380

Country of ref document: EP

Kind code of ref document: A1