FR3019592B1 - Procede et dispositif de surveillance d'un parametre d'un moteur de fusee - Google Patents

Procede et dispositif de surveillance d'un parametre d'un moteur de fusee

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Publication number
FR3019592B1
FR3019592B1 FR1452954A FR1452954A FR3019592B1 FR 3019592 B1 FR3019592 B1 FR 3019592B1 FR 1452954 A FR1452954 A FR 1452954A FR 1452954 A FR1452954 A FR 1452954A FR 3019592 B1 FR3019592 B1 FR 3019592B1
Authority
FR
France
Prior art keywords
parameter
monitoring
rotor motor
rotor
motor
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
FR1452954A
Other languages
English (en)
French (fr)
Other versions
FR3019592A1 (fr
Inventor
Antoine Romet
Gonidec Serge Le
Dimitri Malikov
Jonathan Gazagnes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Aircraft Engines SAS
Original Assignee
SNECMA SAS
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
Priority to FR1452954A priority Critical patent/FR3019592B1/fr
Application filed by SNECMA SAS filed Critical SNECMA SAS
Priority to EP15718541.4A priority patent/EP3126659B1/fr
Priority to PCT/FR2015/050858 priority patent/WO2015150706A1/fr
Priority to RU2016143197A priority patent/RU2654310C2/ru
Priority to JP2016560577A priority patent/JP6585077B2/ja
Priority to US15/301,496 priority patent/US10267265B2/en
Priority to BR112016022774-3A priority patent/BR112016022774B1/pt
Priority to CA2944120A priority patent/CA2944120C/fr
Priority to CN201580025959.3A priority patent/CN106460727B/zh
Publication of FR3019592A1 publication Critical patent/FR3019592A1/fr
Application granted granted Critical
Publication of FR3019592B1 publication Critical patent/FR3019592B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/96—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof characterised by specially adapted arrangements for testing or measuring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
    • F02K9/44—Feeding propellants
    • F02K9/56—Control
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/048—Monitoring; Safety
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0221—Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
    • G05B23/024—Quantitative history assessment, e.g. mathematical relationships between available data; Functions therefor; Principal component analysis [PCA]; Partial least square [PLS]; Statistical classifiers, e.g. Bayesian networks, linear regression or correlation analysis; Neural networks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
    • G06N3/00—Computing arrangements based on biological models
    • G06N3/02—Neural networks
    • G06N3/04—Architecture, e.g. interconnection topology
    • G06N3/047—Probabilistic or stochastic networks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/80—Application in supersonic vehicles excluding hypersonic vehicles or ram, scram or rocket propulsion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/80—Diagnostics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/81—Modelling or simulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/82—Forecasts
    • F05D2260/821—Parameter estimation or prediction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/301—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/303—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/304—Spool rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/306—Mass flow
    • F05D2270/3061—Mass flow of the working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/334—Vibration measurements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/40—Type of control system
    • F05D2270/44—Type of control system active, predictive, or anticipative
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/70—Type of control algorithm
    • F05D2270/709—Type of control algorithm with neural networks
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/24—Pc safety
    • G05B2219/24015—Monitoring
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25255—Neural network
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
    • G05B23/0227—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions
    • G05B23/0235—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions based on a comparison with predetermined threshold or range, e.g. "classical methods", carried out during normal operation; threshold adaptation or choice; when or how to compare with the threshold
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0243—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults model based detection method, e.g. first-principles knowledge model
    • G05B23/0254—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults model based detection method, e.g. first-principles knowledge model based on a quantitative model, e.g. mathematical relationships between inputs and outputs; functions: observer, Kalman filter, residual calculation, Neural Networks

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Artificial Intelligence (AREA)
  • Evolutionary Computation (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Computing Systems (AREA)
  • Biophysics (AREA)
  • Software Systems (AREA)
  • Data Mining & Analysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Probability & Statistics with Applications (AREA)
  • Testing Of Engines (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Feedback Control In General (AREA)
FR1452954A 2014-04-03 2014-04-03 Procede et dispositif de surveillance d'un parametre d'un moteur de fusee Active FR3019592B1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
FR1452954A FR3019592B1 (fr) 2014-04-03 2014-04-03 Procede et dispositif de surveillance d'un parametre d'un moteur de fusee
PCT/FR2015/050858 WO2015150706A1 (fr) 2014-04-03 2015-04-02 Procédé et dispositif de surveillance d'un paramètre d'un moteur de fusée
RU2016143197A RU2654310C2 (ru) 2014-04-03 2015-04-02 Способ и устройство контроля параметра ракетного двигателя
JP2016560577A JP6585077B2 (ja) 2014-04-03 2015-04-02 ロケットエンジンのパラメータを監視するための方法および装置
EP15718541.4A EP3126659B1 (fr) 2014-04-03 2015-04-02 Procédé et dispositif de surveillance d'un paramètre d'un moteur de fusée
US15/301,496 US10267265B2 (en) 2014-04-03 2015-04-02 Method and device for monitoring a parameter of a rocket engine
BR112016022774-3A BR112016022774B1 (pt) 2014-04-03 2015-04-02 Método e dispositivo para monitoramento de um parâmetro de um propulsor de foguete, meio de dados legível por computador, e, propulsor de foguete
CA2944120A CA2944120C (fr) 2014-04-03 2015-04-02 Procede et dispositif de surveillance d'un parametre d'un moteur de fusee
CN201580025959.3A CN106460727B (zh) 2014-04-03 2015-04-02 用于监测火箭发动机的参数的方法和装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1452954A FR3019592B1 (fr) 2014-04-03 2014-04-03 Procede et dispositif de surveillance d'un parametre d'un moteur de fusee

Publications (2)

Publication Number Publication Date
FR3019592A1 FR3019592A1 (fr) 2015-10-09
FR3019592B1 true FR3019592B1 (fr) 2016-04-22

Family

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Family Applications (1)

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FR1452954A Active FR3019592B1 (fr) 2014-04-03 2014-04-03 Procede et dispositif de surveillance d'un parametre d'un moteur de fusee

Country Status (9)

Country Link
US (1) US10267265B2 (pt-PT)
EP (1) EP3126659B1 (pt-PT)
JP (1) JP6585077B2 (pt-PT)
CN (1) CN106460727B (pt-PT)
BR (1) BR112016022774B1 (pt-PT)
CA (1) CA2944120C (pt-PT)
FR (1) FR3019592B1 (pt-PT)
RU (1) RU2654310C2 (pt-PT)
WO (1) WO2015150706A1 (pt-PT)

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RU2692591C1 (ru) * 2018-06-29 2019-06-25 федеральное государственное автономное образовательное учреждение высшего образования "Самарский национальный исследовательский университет имени академика С.П. Королёва" Тягоизмерительное устройство для испытаний жидкостных ракетных двигателей малой тяги в стационарном режиме работы
RU2711813C1 (ru) * 2019-01-22 2020-01-23 федеральное государственное автономное образовательное учреждение высшего образования "Самарский национальный исследовательский университет имени академика С.П. Королёва" Тягоизмерительное устройство для испытаний жидкостных ракетных двигателей малой тяги в импульсных режимах работы
JP7471776B2 (ja) * 2019-02-18 2024-04-22 三菱重工業株式会社 ジェットエンジン
CN109779791B (zh) * 2019-03-24 2021-01-01 西安航天动力测控技术研究所 一种固体火箭发动机中异常数据智能诊断方法
CN111502863B (zh) * 2019-12-17 2022-10-21 西安航天发动机有限公司 一种液氧煤油火箭发动机大部件对接自动测量方法
JP7417256B2 (ja) * 2020-02-04 2024-01-18 国立研究開発法人宇宙航空研究開発機構 宇宙機液体推進システムの故障診断システム、及び宇宙機液体推進システムの故障診断方法
FR3106862B1 (fr) * 2020-02-04 2022-02-04 Arianegroup Sas Procédé de mise en froid utilisant un réseau neuronal artificiel
KR102289048B1 (ko) * 2020-03-03 2021-08-11 국방과학연구소 지상연소시험용 센서계측장치
RU2758781C1 (ru) * 2020-07-24 2021-11-01 Акционерное общество "НПО Энергомаш имени академика В.П. Глушко" Способ контроля технического состояния жидкостного ракетного двигателя на переходных режимах стендового испытания
RU2750875C1 (ru) * 2020-07-24 2021-07-05 Акционерное общество "НПО Энергомаш имени академика В.П. Глушко" Способ локализации неисправности жидкостного ракетного двигателя при огневом испытании
CN112182787B (zh) * 2020-11-03 2022-08-05 中国运载火箭技术研究院 确定运载火箭的总体偏差量的方法、系统、终端及介质
CN112539119B (zh) * 2020-11-30 2021-10-01 北京宇航系统工程研究所 一种基于变门限的推进剂利用系统调节方法
CN112377333B (zh) * 2020-12-02 2021-11-16 西安航天动力研究所 大推力液体火箭发动机涡轮泵实时故障监控方法
CN114459762B (zh) * 2020-12-25 2024-02-23 北京天兵科技有限公司 一种火箭发动机健康状态诊断系统及方法
CN114718766B (zh) * 2022-03-29 2023-12-22 西安航天动力试验技术研究所 一种火箭发动机试验时序自动比对装置及比对方法
CN115306590A (zh) * 2022-08-11 2022-11-08 江苏深蓝航天有限公司 一种发动机核心控制终端、点火方法和可读存储介质
CN117740383B (zh) * 2023-12-20 2024-09-06 上海寰宇乾堃航天科技有限公司 一种通用型发动机测试系统

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RU2016143197A (ru) 2018-05-04
WO2015150706A1 (fr) 2015-10-08
EP3126659B1 (fr) 2019-12-11
EP3126659A1 (fr) 2017-02-08
CN106460727B (zh) 2018-09-21
BR112016022774A2 (pt-PT) 2017-08-15
RU2654310C2 (ru) 2018-05-17
RU2016143197A3 (pt-PT) 2018-05-04
US10267265B2 (en) 2019-04-23
FR3019592A1 (fr) 2015-10-09
JP6585077B2 (ja) 2019-10-02
CA2944120C (fr) 2022-06-14
US20170175680A1 (en) 2017-06-22
CA2944120A1 (fr) 2015-10-08
BR112016022774B1 (pt) 2022-04-19
JP2017524851A (ja) 2017-08-31
CN106460727A (zh) 2017-02-22

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