JP6968942B2 - 建設機械の油圧装置の回転速度測定方法 - Google Patents
建設機械の油圧装置の回転速度測定方法 Download PDFInfo
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- JP6968942B2 JP6968942B2 JP2020118519A JP2020118519A JP6968942B2 JP 6968942 B2 JP6968942 B2 JP 6968942B2 JP 2020118519 A JP2020118519 A JP 2020118519A JP 2020118519 A JP2020118519 A JP 2020118519A JP 6968942 B2 JP6968942 B2 JP 6968942B2
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- frequency
- hydraulic device
- pressure pulsation
- rotation speed
- hydraulic
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- 238000010276 construction Methods 0.000 title claims description 8
- 230000010349 pulsation Effects 0.000 claims description 52
- 238000000034 method Methods 0.000 claims description 27
- 230000001131 transforming effect Effects 0.000 claims 2
- 238000000691 measurement method Methods 0.000 claims 1
- 230000009466 transformation Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000003745 diagnosis Methods 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/26—Devices characterised by the use of fluids
-
- 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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/08—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the rotational speed
-
- 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
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/855—Testing of fluid pressure systems
-
- 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
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Reciprocating Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Component Parts Of Construction Machinery (AREA)
Description
数1:ωrpm=60*(fn−fn−1)/Zpiston
前記数1中の、fnは、第nの周波数成分の周波数を表し、fn−1は、第n−1の周波数成分の周波数を表し、及び、Zpistonは、油圧装置のピストンの個数又はギヤの歯数を表す。
数2:ωrpm=60*fmax/Zpiston
前記数2中の、fmaxは、最大振幅を有する周波数成分の周波数を表し、及び、Zpistonは、油圧装置のピストンの個数又はギヤの歯数を表す。
数3:ωrpm=60*fc/Zpiston
前記数3中の、fcは、隣接周波数成分間の差の周波数に対する、平均周波数に最も近接した周波数成分の周波数を表し、及び、Zpistonは、油圧装置のピストンの個数又はギヤの歯数を表す。
S2:第2のステップ、
S3:第3のステップ。
Claims (5)
- 油圧装置の圧力脈動を検出するステップ;
前記圧力脈動をフーリエ(Fourier)変換するステップ;及び
前記フーリエ変換された圧力脈動に基づいて、前記油圧装置の回転速度を検出するステップ;を含み、
前記油圧装置の回転速度ωrpmは、下記の数1によって算出され、
数1:ωrpm=60*(fn−fn−1)/Zpiston
前記数1中の、fnは、第nの周波数成分の周波数を表し、fn−1は、第n−1の周波数成分の周波数を表し、及び、Zpistonは、油圧装置のピストンの個数又はギヤの歯数を表す、建設機械の油圧装置の回転速度測定方法。 - 油圧装置の圧力脈動を検出するステップ;
前記圧力脈動をフーリエ(Fourier)変換するステップ;及び
前記フーリエ変換された圧力脈動に基づいて、前記油圧装置の回転速度を検出するステップ;を含み、
前記油圧装置の回転速度ωrpmは、下記の数2によって算出され、
数2:ωrpm=60*fmax/Zpiston
前記数2中の、fmaxは、最大振幅を有する周波数成分の周波数を表し、及び、Zpistonは、油圧装置のピストンの個数又はギヤの歯数を表す、回転速度測定方法。 - 油圧装置の圧力脈動を検出するステップ;
前記圧力脈動をフーリエ(Fourier)変換するステップ;及び
前記フーリエ変換された圧力脈動に基づいて、前記油圧装置の回転速度を検出するステップ;を含み、
前記油圧装置の回転速度ωrpmは、下記の数3によって算出され、
数3:ωrpm=60*fc/Zpiston
前記数3中の、fcは、隣接周波数成分間の差の周波数に対する、平均周波数に最も近接した周波数成分の周波数を表し、及び、Zpistonは、油圧装置のピストンの個数又はギヤの歯数を表す、回転速度測定方法。 - 前記圧力脈動は、前記油圧装置のセンサによって検出される、請求項1に記載の建設機械の油圧装置の回転速度測定方法。
- 前記センサは、圧力センサ及び振動センサのうちの少なくとも1つを含む、請求項4に記載の建設機械の油圧装置の回転速度測定方法。
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KR10-2019-0140767 | 2019-11-06 | ||
KR1020190140767A KR102346619B1 (ko) | 2019-11-06 | 2019-11-06 | 건설 기계의 유압 장치의 회전 속도 측정 방법 |
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JP6968942B2 true JP6968942B2 (ja) | 2021-11-24 |
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JP (1) | JP6968942B2 (ja) |
KR (1) | KR102346619B1 (ja) |
CN (1) | CN112780636B (ja) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5871463A (ja) * | 1981-10-23 | 1983-04-28 | Ono Sokki Co Ltd | エンジン回転機の検出方法 |
KR100804205B1 (ko) * | 2002-06-05 | 2008-02-18 | 현대중공업 주식회사 | 유압펌프의 상태 원격감지 시스템 및 고장 진단방법 |
DE102012211425A1 (de) * | 2012-07-02 | 2014-01-23 | Robert Bosch Gmbh | Verfahren zur Bestimmung einer Drehzahl eines Verdichters |
CN106640466A (zh) * | 2016-09-29 | 2017-05-10 | 联合汽车电子有限公司 | 电子燃油泵转速测速***及其测速方法 |
JP6273396B1 (ja) * | 2017-07-28 | 2018-01-31 | 川崎重工業株式会社 | 故障診断装置、それを備えるポンプユニット、及び故障診断方法 |
JP7049138B2 (ja) * | 2018-03-02 | 2022-04-06 | 三菱重工機械システム株式会社 | デッキクレーンの状態判断方法、デッキクレーンの状態判断装置及びデッキクレーンシステム |
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- 2019-11-06 KR KR1020190140767A patent/KR102346619B1/ko active IP Right Grant
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- 2020-06-29 CN CN202010615473.8A patent/CN112780636B/zh active Active
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CN112780636A (zh) | 2021-05-11 |
JP2021076579A (ja) | 2021-05-20 |
KR20210054742A (ko) | 2021-05-14 |
CN112780636B (zh) | 2023-06-02 |
KR102346619B1 (ko) | 2022-01-05 |
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