JP2013513090A - ファイバー・ブラッグ・グレーティングを用いたベアリングの監視 - Google Patents
ファイバー・ブラッグ・グレーティングを用いたベアリングの監視 Download PDFInfo
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- JP2013513090A JP2013513090A JP2012541339A JP2012541339A JP2013513090A JP 2013513090 A JP2013513090 A JP 2013513090A JP 2012541339 A JP2012541339 A JP 2012541339A JP 2012541339 A JP2012541339 A JP 2012541339A JP 2013513090 A JP2013513090 A JP 2013513090A
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- bearing
- frequency
- optical fiber
- diffraction grating
- strain sensor
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- 239000000835 fiber Substances 0.000 title description 9
- 238000012544 monitoring process Methods 0.000 title description 8
- 239000013307 optical fiber Substances 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims description 5
- 230000001133 acceleration Effects 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 9
- 238000009826 distribution Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0009—Force sensors associated with a bearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
- F16C19/522—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to load on the bearing, e.g. bearings with load sensors or means to protect the bearing against overload
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
- F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
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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
- G01D5/26—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
- G01D5/32—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 attenuation or whole or partial obturation of beams of light
- G01D5/34—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35303—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using a reference fibre, e.g. interferometric 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
- G01D5/26—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
- G01D5/32—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 attenuation or whole or partial obturation of beams of light
- G01D5/34—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35306—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement
- G01D5/35309—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer
- G01D5/35316—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer using a Bragg gratings
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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
- G01D5/26—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
- G01D5/32—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 attenuation or whole or partial obturation of beams of light
- G01D5/34—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35338—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using other arrangements than interferometer arrangements
- G01D5/35354—Sensor working in reflection
- G01D5/35367—Sensor working in reflection using reflected light other than backscattered to detect the measured quantity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
- G01L1/246—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
- G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
- G02B6/0208—Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
- F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
- F16C23/08—Ball or roller bearings self-adjusting
- F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
- F16C23/086—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for rolling elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Optics & Photonics (AREA)
- Rolling Contact Bearings (AREA)
- Optical Transform (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
Description
112 軸受けの非回転外輪,114 軸受けの回転内輪
116 外輪および内輪の間に配置された軸受けの転動体
120 ハウジング
212 第1列に属する第1外輪,213 第2列に属する第2外輪
216 第1列の転動体,217 第2列の転動体
230 第1列の第1溝,231 第2列の第2溝
234 溝の高さ/深さ,235 溝の幅
237 第1列の荷重ライン
238 第1溝に位置する第1光ファイバースリット
239 第2溝に位置する第2光ファイバースリット
312 外輪,316 転動体,330 第1溝,331 第2溝,332 第3溝
412 外輪,430 第1溝,431 第2溝
440 入る/出るための光ファイバー通路
500 光ファイバー歪みセンサ装置を有する本発明による軸受け
512 軸受けの非回転外輪,514 軸受けの回転内輪
516 外輪および内輪の間に配置された軸受けの転動体
550 光ファイバー歪みセンサ装置
551 SA−歪みセンサ,552 SB−歪みセンサ
553 SC−歪みセンサ,554 SD−歪みセンサ
555 SE−歪みセンサ,556 SF−歪みセンサ
557 SG−歪みセンサ,558 SH−歪みセンサ
560 軸受けの非荷重ゾーン,562 軸受けの荷重ゾーン
571 SA−歪みセンサのfA中心周波数
572 SB−歪みセンサのfB中心周波数
573 SC−歪みセンサのfC中心周波数
574 SD−歪みセンサのfD中心周波数
575 SE−歪みセンサのfE中心周波数
576 SF−歪みセンサのfF中心周波数
577 SG−歪みセンサのfG中心周波数
578 SH−歪みセンサのfH中心周波数
580 大きい荷重変動による大きい周波数変動
582 中位の荷重変動による中位の周波数変動
584 小さい荷重変動による小さい周波数変動
651 第1歪みセンサ,652 第2歪みセンサ
690 ブラッグ回折格子を有する光ファイバーセンサ装置
692 第1歪みセンサ格子間距離DA,696 第2歪みセンサ格子間距離DB
671 第1歪みセンサの周波数応答,672 第2歪みセンサの周波数応答
751 第1歪みセンサ,752 第2歪みセンサ
790 ブラッグ回折格子を有する光ファイバーセンサ装置
791 第1歪みセンサ内側格子間距離DA−δ
793 第1歪みセンサ外側格子間距離DA+δ
795 第2歪みセンサ格子間距離DB−δ
797 第2歪みセンサ格子間距離DB+δ
771 第1歪みセンサの中心周波数応答,772 第2歪みセンサの中心周波数応答
779 周波数幅
851 第1歪みセンサ,852 第2歪みセンサ
890 ブラッグ回折格子を有する光ファイバーセンサ装置
892 第1歪みセンサ外側および内側格子間距離DA
896 第2歪みセンサ外側および内側格子間距離DB
871 第1歪みセンサの中心周波数応答,872 第2歪みセンサの中心周波数応答
Claims (5)
- 複数の回折格子部分を有するブラッグ・グレーティング光ファイバーを備える軸受けであって、各回折格子部分が周波数の異なる領域に対応し、物理的に順次隣接する回折格子部分が周波数平面において離間した周波数領域に対応するような方法にて各回折格子部分が形成されていることを特徴とする軸受け。
- 物理的に共に近接した回折格子部分が周波数平面において遠く離れた領域に対応するように、各回折格子部分が形成されていることを特徴とする請求項1に記載の軸受け。
- 前記軸受けの荷重ゾーン、またはその周囲に物理的に位置する回折格子部分が、前記軸受けの非荷重ゾーン、またはその周囲に物理的に位置する回折格子部分に対応する周波数領域に隣接する、前記周波数平面における周波数領域に対応することを特徴とする請求項1または2に記載の軸受け。
- 異なるセンサタイプに対応するブラッグ回折格子部分が、前記周波数平面内において高帯域幅センサが低帯域幅センサの隣になるように、前記周波数平面内の対応する周波数領域に混在していることを特徴とする、請求項1〜3のいずれか一項に記載の軸受け。
- ブラッグ回折格子部分の物理的な順序は、前記周波数平面における対応する周波数領域の順序と異なることを特徴とする、請求項1〜4のいずれか一項に記載の軸受け。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US28355709P | 2009-12-04 | 2009-12-04 | |
US61/283,557 | 2009-12-04 | ||
PCT/EP2010/007189 WO2011066927A1 (en) | 2009-12-04 | 2010-11-26 | Bearing monitoring using a fiber bragg grating |
Publications (2)
Publication Number | Publication Date |
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JP2013513090A true JP2013513090A (ja) | 2013-04-18 |
JP5620509B2 JP5620509B2 (ja) | 2014-11-05 |
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Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
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JP2012541340A Active JP5650754B2 (ja) | 2009-12-04 | 2010-11-26 | ファイバー・ブラッグ・グレーティングを用いたベアリングモニタリング |
JP2012541338A Active JP5678086B2 (ja) | 2009-12-04 | 2010-11-26 | ファイバーブラッググレーティングを利用した軸受の管理 |
JP2012541339A Active JP5620509B2 (ja) | 2009-12-04 | 2010-11-26 | ファイバー・ブラッグ・グレーティングを用いたベアリングの監視 |
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JP2012541340A Active JP5650754B2 (ja) | 2009-12-04 | 2010-11-26 | ファイバー・ブラッグ・グレーティングを用いたベアリングモニタリング |
JP2012541338A Active JP5678086B2 (ja) | 2009-12-04 | 2010-11-26 | ファイバーブラッググレーティングを利用した軸受の管理 |
Country Status (4)
Country | Link |
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US (3) | US9103733B2 (ja) |
EP (3) | EP2507605B1 (ja) |
JP (3) | JP5650754B2 (ja) |
WO (3) | WO2011066927A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2016523333A (ja) * | 2013-06-07 | 2016-08-08 | スタトイル・ペトロリウム・アーエスStatoil Petroleum As | 風力タービン制御 |
JP2018194432A (ja) * | 2017-05-17 | 2018-12-06 | 日本精工株式会社 | 回転体支持装置とその診断システムおよび診断方法 |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013186256A1 (en) * | 2012-06-14 | 2013-12-19 | Aktiebolaget Skf | Machine arrangement |
CN104380074A (zh) * | 2012-06-15 | 2015-02-25 | Skf公司 | 机械装置 |
WO2014090332A1 (en) * | 2012-12-14 | 2014-06-19 | Aktiebolaget Skf | Fibre sensor assembly |
WO2014108170A1 (en) * | 2013-01-08 | 2014-07-17 | Aktiebolaget Skf | Fibreoptic sensor clip |
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US9014518B2 (en) | 2015-04-21 |
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