JP6043333B2 - ストローク検出装置 - Google Patents
ストローク検出装置 Download PDFInfo
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- JP6043333B2 JP6043333B2 JP2014246822A JP2014246822A JP6043333B2 JP 6043333 B2 JP6043333 B2 JP 6043333B2 JP 2014246822 A JP2014246822 A JP 2014246822A JP 2014246822 A JP2014246822 A JP 2014246822A JP 6043333 B2 JP6043333 B2 JP 6043333B2
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- 238000001514 detection method Methods 0.000 title claims description 86
- 238000006073 displacement reaction Methods 0.000 description 29
- 230000007423 decrease Effects 0.000 description 25
- 230000005389 magnetism Effects 0.000 description 12
- 239000003921 oil Substances 0.000 description 11
- 239000000696 magnetic material Substances 0.000 description 10
- 238000013459 approach Methods 0.000 description 8
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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Classifications
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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
- G01D5/24428—Error prevention
- G01D5/24433—Error prevention by mechanical means
- G01D5/24438—Special design of the sensing element or scale
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
- F15B15/2846—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using detection of markings, e.g. markings on the piston rod
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
- F15B15/2861—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using magnetic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
-
- 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
-
- 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
-
- 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
- G01D5/147—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 movement of a third element, the position of Hall device and the source of magnetic field being fixed in respect to each other
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
-
- 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
- G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
- G01D2205/70—Position sensors comprising a moving target with particular shapes, e.g. of soft magnetic targets
- G01D2205/77—Specific profiles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Actuator (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
図1を参照して、本発明の第1実施形態に係るストローク検出装置100について説明する。図1に示されるシリンダ10は、図示しない油圧ポンプから吐出される作動油によって動作する油圧シリンダである。ストローク検出装置100は、このシリンダ10に設けられる。
次に、図6を参照して、本発明の第2実施形態に係るストローク検出装置100について説明する。図6は、図1に示されるスケール60をピストンロッド30の周方向Bに展開して示したものである。以下では、第1実施形態と異なる点を中心に説明し、第1実施形態と同様の構成には、同一の符号を付し説明を省略する。
Claims (3)
- 第1部材と、
前記第1部材に対して進退自在に設けられる円柱状の第2部材と、
前記第2部材の表面に前記第2部材の進退方向に沿って形成されるスケールと、
前記スケールに対向するように前記第1部材に設けられ、対向する前記スケールの面積に応じて出力が変化する第1検出素子及び第2検出素子と、を備え、
前記スケールは、前記第2部材の進退方向に対して傾斜する第1縁部と、前記第2部材の進退方向に対して前記第1縁部とは異なる角度に延びる第2縁部と、を有し、
前記第1縁部は、前記第2部材の進退範囲において常に前記第1検出素子に対向するように形成され、前記第2縁部は、前記第2部材の進退範囲において常に前記第2検出素子に対向するように形成されており、
前記第1検出素子に対向する前記スケールの面積が漸増する前記第2部材の進退方向と、前記第2検出素子に対向する前記スケールの面積が漸増する前記第2部材の進退方向と、は反対方向であり、
前記スケールは、前記第1縁部を有する第1スケールと、前記第2縁部を有する第2スケールと、を有し、
前記第1スケールと前記第2スケールとは、前記第2部材の周方向において90°未満の範囲内に設けられ、
前記第2部材のストロークは、前記第1検出素子の出力と前記第2検出素子の出力との差に基づいて検出されることを特徴とするストローク検出装置。 - 前記第1スケールにおける前記第1縁部の位置と前記第2スケールにおける前記第2縁部の位置とは、前記第1部材に対して前記第2部材が周方向に変位したときの前記第1検出素子の出力の変化方向と前記第2検出素子の出力の変化方向とが同じになるようにそれぞれ設定されることを特徴とする請求項1に記載のストローク検出装置。
- 前記第1スケール及び前記第2スケールは、それぞれ矩形状に形成されることを特徴とする請求項2に記載のストローク検出装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014246822A JP6043333B2 (ja) | 2014-12-05 | 2014-12-05 | ストローク検出装置 |
US15/531,943 US20180136014A1 (en) | 2014-12-05 | 2015-11-24 | Stroke detector |
CN201580065923.8A CN107003147A (zh) | 2014-12-05 | 2015-11-24 | 行程检测装置 |
PCT/JP2015/082935 WO2016088605A1 (ja) | 2014-12-05 | 2015-11-24 | ストローク検出装置 |
KR1020177014836A KR101868365B1 (ko) | 2014-12-05 | 2015-11-24 | 스트로크 검출 장치 |
EP15865987.0A EP3228992A4 (en) | 2014-12-05 | 2015-11-24 | Stroke detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014246822A JP6043333B2 (ja) | 2014-12-05 | 2014-12-05 | ストローク検出装置 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2016109538A JP2016109538A (ja) | 2016-06-20 |
JP2016109538A5 JP2016109538A5 (ja) | 2016-11-04 |
JP6043333B2 true JP6043333B2 (ja) | 2016-12-14 |
Family
ID=56091554
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014246822A Active JP6043333B2 (ja) | 2014-12-05 | 2014-12-05 | ストローク検出装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20180136014A1 (ja) |
EP (1) | EP3228992A4 (ja) |
JP (1) | JP6043333B2 (ja) |
KR (1) | KR101868365B1 (ja) |
CN (1) | CN107003147A (ja) |
WO (1) | WO2016088605A1 (ja) |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08156796A (ja) * | 1994-10-07 | 1996-06-18 | Mitsubishi Electric Corp | 遮断器の開閉速度測定装置 |
US5670876A (en) * | 1995-11-14 | 1997-09-23 | Fisher Controls International, Inc. | Magnetic displacement sensor including first and second flux paths wherein the first path has a fixed reluctance and a sensor disposed therein |
JP4063402B2 (ja) * | 1998-05-27 | 2008-03-19 | 株式会社アミテック | シリンダ位置検出装置 |
JP4740438B2 (ja) * | 1999-12-17 | 2011-08-03 | 株式会社アミテック | シリンダ位置検出装置 |
US6690160B2 (en) * | 2002-04-22 | 2004-02-10 | Deere & Company | Position sensing apparatus |
JP2006183721A (ja) * | 2004-12-27 | 2006-07-13 | Kayaba Ind Co Ltd | シリンダ位置検出装置、油空圧シリンダ |
JP4620447B2 (ja) * | 2004-12-27 | 2011-01-26 | カヤバ工業株式会社 | シリンダ位置検出装置、油空圧シリンダ |
US7280937B1 (en) * | 2006-04-18 | 2007-10-09 | Deere & Company | System and method for detecting an axial position of a shaft |
US7757547B2 (en) * | 2006-06-16 | 2010-07-20 | Komatsu Ltd. | Cylinder stroke position measurement device |
KR100776743B1 (ko) * | 2006-11-20 | 2007-11-19 | 경남대학교 산학협력단 | 피스톤 로드의 변위 측정용 자기스케일 형성방법 및 변위검출방법 |
JP4842314B2 (ja) * | 2008-11-07 | 2011-12-21 | 株式会社アミテック | シリンダ位置検出装置 |
JP2010256122A (ja) * | 2009-04-23 | 2010-11-11 | Kayaba Ind Co Ltd | シリンダのストロークセンサ |
JP2010145423A (ja) * | 2010-03-15 | 2010-07-01 | Amitec:Kk | シリンダ位置検出装置 |
-
2014
- 2014-12-05 JP JP2014246822A patent/JP6043333B2/ja active Active
-
2015
- 2015-11-24 US US15/531,943 patent/US20180136014A1/en not_active Abandoned
- 2015-11-24 WO PCT/JP2015/082935 patent/WO2016088605A1/ja active Application Filing
- 2015-11-24 KR KR1020177014836A patent/KR101868365B1/ko active IP Right Grant
- 2015-11-24 CN CN201580065923.8A patent/CN107003147A/zh active Pending
- 2015-11-24 EP EP15865987.0A patent/EP3228992A4/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
US20180136014A1 (en) | 2018-05-17 |
CN107003147A (zh) | 2017-08-01 |
WO2016088605A1 (ja) | 2016-06-09 |
JP2016109538A (ja) | 2016-06-20 |
KR101868365B1 (ko) | 2018-06-19 |
KR20170076777A (ko) | 2017-07-04 |
EP3228992A4 (en) | 2018-07-11 |
EP3228992A1 (en) | 2017-10-11 |
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