EP3814167A1 - Procédé de pilotage d'une machine electrique tournante pour compenser des oscillations de couple d'une chaîne de traction de véhicule automobile - Google Patents
Procédé de pilotage d'une machine electrique tournante pour compenser des oscillations de couple d'une chaîne de traction de véhicule automobileInfo
- Publication number
- EP3814167A1 EP3814167A1 EP19752542.1A EP19752542A EP3814167A1 EP 3814167 A1 EP3814167 A1 EP 3814167A1 EP 19752542 A EP19752542 A EP 19752542A EP 3814167 A1 EP3814167 A1 EP 3814167A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- torque
- motor vehicle
- electric machine
- tcons
- tcomp
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/14—Acceleration
- B60L2240/16—Acceleration longitudinal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2260/00—Operating Modes
- B60L2260/20—Drive modes; Transition between modes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2260/00—Operating Modes
- B60L2260/40—Control modes
- B60L2260/42—Control modes by adaptive correction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/91—Electric vehicles
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Definitions
- a motor vehicle traction chain comprises a heat engine coupled to a gearbox by means of a clutch.
- a transmission shaft at the output of the gearbox is mechanically connected to the wheels by means of a differential and cardan shafts.
- the electric machine is in particular capable of operating in engine mode to ensure traction of the vehicle alone or in combination with the heat engine.
- the electric machine can also ensure that the heat engine starts.
- This machine is also able to operate in generator mode to supply energy to the vehicle battery, in particular during a regenerative braking phase.
- the heat engine is switched off and uncoupled from the rest of the powertrain by opening the clutch.
- the electric machine is then controlled and supplies torque to the wheel via one of the gearbox ratios.
- gearbox engaged (1 st, 2 nd, 3 rd ...) and the reduction ratio corresponding to each of these speeds (3.3, 1, 9, 1, 3. ..) ⁇
- the lowest gear engaged provides the greatest reduction ratio.
- the present invention aims to effectively remedy this drawback by proposing a method for controlling a rotary electric machine integrated in a traction chain of a motor vehicle, said traction chain comprising a heat engine connected to a gearbox by means of a clutch, said rotary electrical machine being coupled to the gearbox,
- said method comprises:
- the invention thus makes it possible to reduce, or even eliminate, the torque oscillations when driving the motor vehicle in electric mode, and thus to increase passenger comfort.
- the invention also has an economic character, insofar as it can be implemented at least in part by a software implementation.
- the invention has a curative role.
- the vibrations to be attenuated come from the absence of natural damping which is the source of the heat engine, in particular linked to the internal friction which is established in it, when it is connected to the rest of the transmission chain. These vibrations have a very different amplitude and frequency from the vibrations linked to the heat engine.
- the electric machine can be integrated into the so-called transmission chain thermal downstream of the clutch in the direction of torque transmission to the vehicle wheels.
- the electric machine can be integrated between the clutch and the gearbox.
- the electric machine can be integrated into the gearbox.
- the electric machine can be connected in position 2.5. The machine is then connected either to the even reports or to the odd reports of the gearbox.
- the electric machine can be integrated between the gearbox and the vehicle wheels.
- the machine can be integrated in a transmission chain other than the thermal transmission chain, for example in a vehicle wheel or mounted on an axle not connected to the thermal transmission chain.
- the pulsating compensation torque depends on a reduction ratio and on a stiffness of the traction chain.
- the amplitude and phase of the pulsating compensation torque depend, this allows the compensation to be adjusted more precisely.
- the gain depends on a desired damping factor.
- the damping factor is predetermined or depends on a driving mode of the motor vehicle.
- the damping factor can be between 0.25 and 0.7.
- said method comprises a prior step of limiting torque variations in the setpoint torque by applying a prefilter.
- This prefilter has a preventive role since the torque oscillations to be attenuated will be less pronounced and therefore less difficult to compensate.
- This prefilter is defined so as to cut the DC component and / or so as to cut the high frequencies and let pass the frequency linked to the stiffness of the transmission chain in which the electric machine.
- the prefilter is a ramp.
- the prefilter is a filter of order N, in particular of order 2, in particular of order 3.
- the invention also relates to a control module of a rotary electric machine characterized in that it comprises a memory storing software instructions for the implementation of the method as defined above.
- FIG. 1 is a schematic representation of a traction chain of a motor vehicle implementing the method according to the invention for compensation of torque oscillations by an electric machine;
- FIG. 2 is a detailed schematic representation of the coupling of the electric machine with the gearbox
- FIGS. 4a and 4b are graphical representations, as a function of time, of the target torque, of the torque at the wheels, of a speed of rotation of the wheels and of the electric machine obtained respectively without and with the implementation of the method according to the invention;
- FIG. 5 illustrates an alternative implementation of the method according to the invention comprising a preliminary step of preventive filtering of the target cut
- FIGS. 6a and 6b are graphic representations illustrating the attenuation of the torque peak at the wheel respectively with a ramp type filter and a first order filter applied to the setpoint torque.
- Figure 1 shows a traction chain 10 of a motor vehicle comprising a heat engine 1 1 coupled to a gearbox 12 by means of a clutch 13.
- a transmission shaft 15 at the outlet of the gearbox 12 is connected mechanically to the wheels 16 by means of a differential 18 and cardan shafts 20.
- a reversible electric machine 21 is coupled to the gearbox 12.
- This hybrid system allows the vehicle to use several functions associating the electric machine 21 and the heat engine 1 1 combined or independently.
- the electric machine 21 is able to operate in engine mode to ensure traction of the vehicle alone or in combination with the heat engine 1 1.
- the clutch 13 is opened during a phase of electric vehicle rolling and closed during a thermal vehicle rolling phase.
- the electric machine 21 can also ensure a starting of the heat engine 11.
- This machine 21 is also able to operate in generator mode to supply energy to the vehicle battery, in particular during a regenerative braking phase.
- the electric machine 21 is advantageously a machine of the three-phase double synchronous type connected to an electric network having an operating voltage of 48 Volts.
- the electric machine 21 may have a power between 15 kW and 25 kW and provide a torque in particular between 55Nm and 80Nm depending on its length.
- FIG. 2 shows an example of coupling of the electric machine 21 with the gearbox 12 comprising a plurality of speed ratios R1 -Rn.
- the number of reports n is 7 but it can of course be adapted according to the application.
- a first shaft 23 is associated with odd speed ratios and a second shaft 24 is associated with even speed ratios.
- a double clutch system 13 makes it possible to link in rotation or to release these shafts 23, 24 as a function of the gear engaged.
- the rotary electric machine 21 is coupled to the gearbox 12 via a speed reducer 25.
- the electric machine 21 is here coupled to the second shaft 24.
- the electric machine 21 can be installed inside or outside the gearbox 12.
- the various functional blocks may take the form of software instructions stored in a memory of a control module 22 of the rotary electrical machine 21. More specifically, block B1 generates a setpoint torque Tcons corresponding to a desire to accelerate the driver defined in particular by depressing the vehicle's accelerator pedal. The set E of functional blocks determines a pulsed compensation torque Tcomp to compensate for oscillations of torque Tosc generated by the traction chain 10.
- Block B2 combines the setpoint torque Tcons and the pulsed compensation torque Tcomp previously determined to obtain a torque resulting from modified setpoint Tcons'.
- the torque resulting from the modified setpoint Tcons' is then applied to the rotary electric machine 21 and therefore to the traction chain 10.
- the speed of rotation of the electric machine 21 is measured using a speed sensor 27 via the block B3.
- a speed signal Wmel is thus obtained at the output of block B3.
- the speed sensor 27 is for example a Hall effect sensor.
- An alternative component Wmel_ac of the speed signal is then extracted by applying a bandpass filter F_PB via the block B4.
- This bandpass filter F_PB has a central frequency f0 corresponding to the frequency of the torque oscillations Tosc.
- the central frequency fO of the filter depends on an engaged speed ratio Rx and a stiffness K of the traction chain 10.
- the central frequency fO could for example be obtained by means of a map receiving as input the ratio of engaged Rx gearbox communicated by the engine control unit.
- the pulsed compensation torque Tcomp is injected by the block B2 in phase opposition with respect to the torque oscillations Tosc of the traction chain 10.
- FIG. 4a is a graphical representation, as a function of time, of the setpoint torque Tcons, of the torque at the wheels Tr, of a speed of rotation of the wheels Wr and of the electric machine Wmel obtained without the implementation of the method according to l 'invention.
- FIG. 4b is a graphical representation, as a function of time, of the setpoint torque Tcons, of the resultant torque of modified setpoint Tcons' integrating the pulsed compensation torque Tcomp, of the torque at the wheels T r, of a speed of rotation of the wheels Wr and the Wmel electric machine obtained with the implementation of the method according to the invention.
- the method comprises a preliminary step of limiting torque variations in the setpoint torque Tcons by applying a prefilter via the block B6.
- the prefilter could be a ramp making it possible to obtain a filtered setpoint torque Tcons_f. Limiting the instantaneous torque variation makes it possible to reduce the peak torque value at wheel T r by around 20 to 25%.
- the prefilter could be a 1st order filter which introduces slopes into the filtered setpoint torque Tcons_f, as well as horizontal tangents at "takeoff", that is to say at the start and "landing", that is to say at the end of the setpoint step, thereby reducing the oscillations of the torque at the wheel Tr by an additional 10% compared to the ramp type prefilter.
- the prefilter may be a filter of order N.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1855832A FR3083339B1 (fr) | 2018-06-28 | 2018-06-28 | Procede de pilotage d'une machine electrique tournante pour compenser les oscillations de couple d'une chaine de traction de vehicule automobile |
| PCT/FR2019/051607 WO2020002855A1 (fr) | 2018-06-28 | 2019-06-28 | Procédé de pilotage d'une machine electrique tournante pour compenser des oscillations de couple d'une chaîne de traction de véhicule automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3814167A1 true EP3814167A1 (fr) | 2021-05-05 |
Family
ID=63407472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19752542.1A Pending EP3814167A1 (fr) | 2018-06-28 | 2019-06-28 | Procédé de pilotage d'une machine electrique tournante pour compenser des oscillations de couple d'une chaîne de traction de véhicule automobile |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US11654776B2 (fr) |
| EP (1) | EP3814167A1 (fr) |
| JP (1) | JP7391895B2 (fr) |
| KR (1) | KR102656322B1 (fr) |
| CN (1) | CN112272626B (fr) |
| FR (1) | FR3083339B1 (fr) |
| WO (1) | WO2020002855A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115716414B (zh) * | 2022-11-28 | 2024-12-27 | 长沙普洛电气设备有限公司 | 一种轨道车辆车轮矢量同步控制方法以及系统 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUB20153401A1 (it) * | 2015-09-03 | 2017-03-03 | Ferrari Spa | Metodo di controllo di una macchina elettrica per la trazione di un veicolo |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1023614A (ja) * | 1996-07-01 | 1998-01-23 | Denso Corp | 電気自動車の走行制御装置 |
| KR100387499B1 (ko) * | 2000-12-26 | 2003-06-18 | 현대자동차주식회사 | 하이브리드 전기 자동차의 구동 시스템 |
| JP3878536B2 (ja) * | 2002-11-05 | 2007-02-07 | 株式会社豊田中央研究所 | ハイブリッド車両の制御装置 |
| JP4661183B2 (ja) * | 2004-10-07 | 2011-03-30 | トヨタ自動車株式会社 | モータ駆動装置 |
| FR2910198B1 (fr) * | 2006-12-13 | 2009-03-13 | Peugeot Citroen Automobiles Sa | Procede de commande d'un moteur electrique de vehicule hybride ou elctrique |
| US8043194B2 (en) * | 2007-10-05 | 2011-10-25 | Ford Global Technologies, Llc | Vehicle creep control in a hybrid electric vehicle |
| JP5298498B2 (ja) * | 2007-10-24 | 2013-09-25 | 日産自動車株式会社 | 電動機の制御装置及びその制御方法 |
| JP2010023790A (ja) * | 2008-07-24 | 2010-02-04 | Toyota Central R&D Labs Inc | 電動機の制御装置 |
| US10399456B2 (en) * | 2009-05-15 | 2019-09-03 | Ford Global Technologies, Llc | Automotive vehicle and method of controlling an electric machine therein |
| KR101117970B1 (ko) * | 2009-11-06 | 2012-02-15 | 기아자동차주식회사 | 하이브리드 차량의 안티 저크 제어 장치 및 방법 |
| DE102010039701A1 (de) * | 2010-08-24 | 2012-03-01 | Robert Bosch Gmbh | Verfahren und System zur Steuerung einer elektrischen Maschine in einem Antriebsstrang eines Kraftfahrzeuges |
| KR20130055472A (ko) * | 2011-11-18 | 2013-05-28 | 현대자동차주식회사 | 자동차의 구동계 진동 제어장치 및 그 제어방법 |
| US9457787B2 (en) * | 2012-05-07 | 2016-10-04 | Ford Global Technologies, Llc | Method and system to manage driveline oscillations with motor torque adjustment |
| JP6279211B2 (ja) * | 2013-01-31 | 2018-02-14 | Ntn株式会社 | 電気自動車用同期モータの制御装置 |
| US9056613B2 (en) * | 2013-11-06 | 2015-06-16 | Ford Global Technologies, Llc | System and method for upshift torque modification using an upstream clutch in a hybrid vehicle |
| US9446757B2 (en) * | 2014-03-05 | 2016-09-20 | Ford Global Technologies, Llc | Active motor damping control of a hybrid electric vehicle powertrain |
| US20150307101A1 (en) * | 2014-04-28 | 2015-10-29 | Ford Global Technologies, Llc | Vehicle and method to control rolling engagements |
| US10527165B2 (en) * | 2015-03-30 | 2020-01-07 | Jatco Ltd | Automatic transmission control device and control method |
| CN106553634B (zh) * | 2015-09-28 | 2019-04-02 | 长城汽车股份有限公司 | 通过bsg电机启动发动机的控制方法、系统及车辆 |
| GB2544763B (en) * | 2015-11-25 | 2019-03-27 | Jaguar Land Rover Ltd | Controller for a motor vehicle and method |
| US10994721B2 (en) * | 2016-09-13 | 2021-05-04 | Ford Global Technologies, Llc | Engine and motor control during wheel torque reversal in a hybrid vehicle |
| KR20180040883A (ko) * | 2016-10-13 | 2018-04-23 | 현대자동차주식회사 | 하이브리드 차량의 진동 저감 장치 및 방법 |
-
2018
- 2018-06-28 FR FR1855832A patent/FR3083339B1/fr active Active
-
2019
- 2019-06-28 KR KR1020207037137A patent/KR102656322B1/ko active Active
- 2019-06-28 CN CN201980039042.7A patent/CN112272626B/zh active Active
- 2019-06-28 JP JP2020572794A patent/JP7391895B2/ja active Active
- 2019-06-28 WO PCT/FR2019/051607 patent/WO2020002855A1/fr not_active Ceased
- 2019-06-28 EP EP19752542.1A patent/EP3814167A1/fr active Pending
- 2019-06-28 US US17/256,433 patent/US11654776B2/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUB20153401A1 (it) * | 2015-09-03 | 2017-03-03 | Ferrari Spa | Metodo di controllo di una macchina elettrica per la trazione di un veicolo |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021529126A (ja) | 2021-10-28 |
| CN112272626A (zh) | 2021-01-26 |
| KR102656322B1 (ko) | 2024-04-09 |
| FR3083339A1 (fr) | 2020-01-03 |
| KR20210022585A (ko) | 2021-03-03 |
| US11654776B2 (en) | 2023-05-23 |
| WO2020002855A1 (fr) | 2020-01-02 |
| US20210268914A1 (en) | 2021-09-02 |
| JP7391895B2 (ja) | 2023-12-05 |
| FR3083339B1 (fr) | 2021-01-22 |
| CN112272626B (zh) | 2024-09-27 |
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