JP4400500B2 - 位置検出器および位置決め装置 - Google Patents
位置検出器および位置決め装置 Download PDFInfo
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N52/00—Hall-effect devices
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- 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
- G01D5/12—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 using electric or magnetic means
- G01D5/14—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 using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—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 using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—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 using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
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- 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
- G01D5/12—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 using electric or magnetic means
- G01D5/14—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 using electric or magnetic means influencing the magnitude of a current or voltage
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- 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
- G01D5/12—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 using electric or magnetic means
- G01D5/244—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 using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/24471—Error correction
- G01D5/24476—Signal processing
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- 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
- G01D5/12—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 using electric or magnetic means
- G01D5/244—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 using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/245—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 using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
-
- 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
- G01D5/12—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 using electric or magnetic means
- G01D5/244—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 using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/245—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 using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
- G01D5/2451—Incremental encoders
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/021—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors using intermittent driving, e.g. step motors, piezoleg motors
- H02N2/025—Inertial sliding motors
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Hall/Mr Elements (AREA)
Description
この構成によれば、小型のカメラユニット等の光学機器が実現できる。
図1は、本発明の第1実施形態である位置決め装置1の構成を示す概略図である。位置決め装置1は、圧電アクチュエータ2と位置検出器3とからなり、圧電アクチュエータ2の駆動回路4と、位置検出器3の検出信号を処理する検出回路5と、位置指令によって指示された位置に対応する検出回路5の出力が得られるように駆動回路4を制御する制御回路6とを有している。
A>0の場合、(A−B)/(A+B)+2、
B<0の場合、(A−B)/(A+B)−2、
A≦0且つB≧0の場合、(B+A)/(B−A)の演算を行う演算装置(演算手段)18とからなっている。
図3は、磁界発生部材11から0.65mm離れた地点でのx方向の位置に対する磁束密度を示す。位置は、磁界発生部材11の中央を0として示している。磁界発生部材11は、±0.6mmの部分に着磁がなされていない不着磁部15が存在しているために、およそ±1mmの間で磁束密度が直線的に変化する線形範囲を有している。
2 圧電アクチュエータ
3 位置検出器
8 電気機械変換素子
9 駆動部材
10 可動部材
11 磁界発生部材
12 磁界検出手段
13 N極部
14 S極部
15 不着磁部
16a,16b ホール素子(磁界検出素子)
18 演算装置(演算手段)
19 レンズ(光学素子)
21 エンコーダ(位置検出器)
22 N極部
23 S極部
24 磁界発生部材
25a,25b 磁気抵抗効果素子(磁界検出素子)
27 演算装置(演算手段)
A 検出信号
B 検出信号
Claims (6)
- 所定の可動方向に移動可能な可動部材に付設した磁界発生部材と、前記磁界発生部材の移動による磁界変化を検出する磁界検出手段とを備え、
前記磁界発生部材は、N極に着磁したN極部と、前記N極部と前記可動方向に並んだS極に着磁したS極部と、前記N極部と前記S極部との間の着磁していない不着磁部とからなり、前記不着磁部に対向している間に前記磁界検出手段が検出する磁界が、前記磁界発生部材の位置に対して線形的に変化する位置検出器において、
前記磁界検出手段は、前記可動方向に並んだ2つの磁界変化を検出する磁界検出素子を有し、
前記2つの磁界検出素子の検出信号を、線形範囲において小さい方をA、大きい方をBとすると、
A>0の場合、(A−B)/(A+B)+2、
B<0の場合、(A−B)/(A+B)−2、
A≦0且つB≧0の場合、(B+A)/(B−A)の演算を行う演算手段をさらに備えることを特徴とする位置検出器。 - 所定の可動方向に移動可能な可動部材に付設した磁界発生部材と、前記磁界発生部材の移動による磁界変化を検出する磁界検出手段とを備え、
前記磁界発生部材は、N極に着磁したN極部と、前記N極部と前記可動方向に並んだS極に着磁したS極部と、前記N極部と前記S極部との間の着磁していない不着磁部とからなり、前記不着磁部に対向している間に前記磁界検出手段が検出する磁界が、前記磁界発生部材の位置に対して線形的に変化する位置検出器において、
前記磁界検出手段は、前記可動方向に並んだ2つの磁界変化を検出する磁界検出素子を有し、
前記2つの磁界検出素子の検出信号を、線形範囲において小さい方をA、大きい方をBとすると、(B+A)/(B−A)の演算を行う演算手段をさらに備えることを特徴とする位置検出器。 - 前記不着磁部の前記可動方向の長さは、前記磁界発生部材の全長の1/10以上1/3以下であることを特徴とする請求項1または2に記載の位置検出器。
- 前記磁界検出素子は、ホール素子であることを特徴とする請求項1から3のいずれかに記載の位置検出器。
- 前記1から4のいずれかの位置検出器を備え、
前記可動部材は、前記可動方向に伸縮する電気機械変換素子によって前記可動方向に進退させられる駆動軸に摩擦係合しており、
前記電気機械変換素子の伸長と収縮の速度を異ならせることで前記可動部材を前記駆動軸上で滑り移動させる圧電アクチュエータであることを特徴とする位置決め装置。 - 前記可動部材は、光学素子を保持することを特徴とする請求項5に記載の位置決め装置。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005109364A JP4400500B2 (ja) | 2005-04-06 | 2005-04-06 | 位置検出器および位置決め装置 |
EP06715648A EP1884747A4 (en) | 2005-04-06 | 2006-03-14 | POSITION DETECTOR AND POSITIONING DEVICE |
PCT/JP2006/304989 WO2006109384A1 (ja) | 2005-04-06 | 2006-03-14 | 位置検出器および位置決め装置 |
CN2006800114716A CN101156047B (zh) | 2005-04-06 | 2006-03-14 | 位置检测器以及定位装置 |
KR1020077019181A KR20080003777A (ko) | 2005-04-06 | 2006-03-14 | 위치검출기 및 위치결정장치 |
US11/887,994 US8013596B2 (en) | 2005-04-06 | 2006-03-14 | Position detector and positioning device |
US13/196,024 US20110288815A1 (en) | 2005-04-06 | 2011-08-02 | Position detector and positioning device |
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JP2005109364A JP4400500B2 (ja) | 2005-04-06 | 2005-04-06 | 位置検出器および位置決め装置 |
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JP2006292396A JP2006292396A (ja) | 2006-10-26 |
JP4400500B2 true JP4400500B2 (ja) | 2010-01-20 |
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US (2) | US8013596B2 (ja) |
EP (1) | EP1884747A4 (ja) |
JP (1) | JP4400500B2 (ja) |
KR (1) | KR20080003777A (ja) |
CN (1) | CN101156047B (ja) |
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JP2005284169A (ja) * | 2004-03-30 | 2005-10-13 | Konica Minolta Opto Inc | 駆動装置及び光学機器 |
JP4587708B2 (ja) * | 2004-05-20 | 2010-11-24 | コニカミノルタオプト株式会社 | 位置検出装置、手振れ補正機構、および撮像装置 |
JP4049125B2 (ja) * | 2004-05-20 | 2008-02-20 | コニカミノルタオプト株式会社 | 位置検出装置、手振れ補正機構、および撮像装置 |
JP4600060B2 (ja) * | 2005-02-01 | 2010-12-15 | コニカミノルタオプト株式会社 | 駆動装置 |
JP4400500B2 (ja) | 2005-04-06 | 2010-01-20 | コニカミノルタオプト株式会社 | 位置検出器および位置決め装置 |
-
2005
- 2005-04-06 JP JP2005109364A patent/JP4400500B2/ja not_active Expired - Fee Related
-
2006
- 2006-03-14 US US11/887,994 patent/US8013596B2/en not_active Expired - Fee Related
- 2006-03-14 CN CN2006800114716A patent/CN101156047B/zh not_active Expired - Fee Related
- 2006-03-14 WO PCT/JP2006/304989 patent/WO2006109384A1/ja active Application Filing
- 2006-03-14 KR KR1020077019181A patent/KR20080003777A/ko not_active Application Discontinuation
- 2006-03-14 EP EP06715648A patent/EP1884747A4/en not_active Withdrawn
-
2011
- 2011-08-02 US US13/196,024 patent/US20110288815A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20090039875A1 (en) | 2009-02-12 |
US20110288815A1 (en) | 2011-11-24 |
KR20080003777A (ko) | 2008-01-08 |
JP2006292396A (ja) | 2006-10-26 |
CN101156047A (zh) | 2008-04-02 |
US8013596B2 (en) | 2011-09-06 |
CN101156047B (zh) | 2010-06-09 |
EP1884747A1 (en) | 2008-02-06 |
EP1884747A4 (en) | 2013-02-20 |
WO2006109384A8 (ja) | 2007-01-04 |
WO2006109384A1 (ja) | 2006-10-19 |
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