EP3565728A1 - Controle d'une machine electrique de vehicule hybride pour la fermeture d'un accouplement a crabot - Google Patents
Controle d'une machine electrique de vehicule hybride pour la fermeture d'un accouplement a crabotInfo
- Publication number
- EP3565728A1 EP3565728A1 EP17822383.0A EP17822383A EP3565728A1 EP 3565728 A1 EP3565728 A1 EP 3565728A1 EP 17822383 A EP17822383 A EP 17822383A EP 3565728 A1 EP3565728 A1 EP 3565728A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- speed
- electric machine
- coupling
- clutch
- difference
- 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.)
- Withdrawn
Links
- 230000008878 coupling Effects 0.000 claims description 51
- 238000010168 coupling process Methods 0.000 claims description 51
- 238000005859 coupling reaction Methods 0.000 claims description 51
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000011217 control strategy Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 abstract description 4
- 230000037213 diet Effects 0.000 description 2
- 235000005911 diet Nutrition 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000000368 destabilizing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/50—Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/029—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
- B60W2050/0292—Fail-safe or redundant systems, e.g. limp-home or backup systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/029—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
- B60W2050/0295—Inhibiting action of specific actuators or systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/08—Electric propulsion units
- B60W2510/081—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/081—Speed
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D11/00—Clutches in which the members have interengaging parts
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/104—Clutch
- F16D2500/10443—Clutch type
- F16D2500/10462—Dog-type clutch
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/50—Problem to be solved by the control system
- F16D2500/51—Relating safety
- F16D2500/5114—Failsafe
Definitions
- the present invention relates to a control strategy of an electric machine connected by a clutch coupling system to the wheels of a hybrid motor vehicle, and a hybrid vehicle comprising means implementing such a strategy.
- a known type of hybrid vehicle presented in particular by the document FR-B1 -2954441, comprises a heat engine driving by a gearbox the front wheels of the vehicle, and an electric machine driving the rear wheels by a transmission comprising a device. dog coupling controlled by an automatic actuator.
- the electric machine powered by traction batteries can operate as a motor by drawing energy on these batteries to deliver a torque on the rear wheels, or generator by recovering energy recharging these batteries.
- the clutch coupling of the electric machine may comprise on each side of this coupling, towards the electric machine and towards the wheels of the vehicle, transmissions that increase the speed to adapt the speeds of rotation.
- the clutch coupling can be connected directly to the shaft of the electric machine, rotating at the same speed as this machine, with a speed reduction downstream resulting in a differential distributing the speed to the rear wheels.
- the coupling can be installed in the differential, rotating at the same speed as the rear wheels.
- the clutch coupling does not have progressivity when it is closed, unlike a friction clutch, it is necessary to close it by providing a fairly precise regulation of the electric machine with a small margin so as to sufficiently synchronize the clutch. the rotational speeds of the two elements of this coupling to be connected before engaging their teeth to each other, to avoid noise, wear, and a risk of refusal of commitment.
- the document of the prior art mentioned above shows a method of coupling the electric machine, this machine receiving a rotation speed setpoint so as to synchronize the two elements of the dog clutch, taking into account the gear ratios. of the transmission chain.
- this method can cause problems in case of failure of the control system, if we apply a control of the electric machine with a high torque while the clutch coupling is closed by mistake. A torque peak is obtained on the wheels driven by this electric machine, accelerating or braking the vehicle, which can be dangerous for the driver and his entourage by destabilizing this vehicle.
- this problem arises for an electric machine of a hybrid vehicle driving the front or rear wheels via a clutch coupling, this machine being connected to the wheels independently of the heat engine transmission, or through this transmission.
- the present invention is intended in particular to avoid these problems of the prior art.
- An advantage of this strategy is that to prepare a closure in the case where the clutch coupling is already closed, then the speed difference of the elements of the coupling is below the speed threshold. If in addition the speed setpoint is moved away from the current speed beyond the speed threshold, then the strategy prevents the speed regulation of the electric machine requiring a high torque to make up for this difference, which would constitute a mistake presenting a discomfort or even a danger to the passengers and the entourage.
- the strategy does not prevent the speed control of the electric machine.
- this difference in speed is too low to require the electric machine a high torque catch-up of the difference, the low torque requested would not be uncomfortable or dangerous.
- control strategy of an electric machine according to the invention may further include one or more of the following features, which may be combined with one another.
- the strategy puts the electric machine in a state ensuring the safety comprising a cut-off of the control of the electric machine, or a control of this electric machine to deliver on the system Coupling clutch torque zero.
- the strategy allows the regulation of the electric machine in the speed mode if the speed difference of the two elements of the clutch coupling is greater than the speed threshold, or if the difference between the speed reference and the current speed. is below the diet threshold.
- the speed threshold of the speed difference of the two elements of the coupling corresponds by taking into account the reduction of a transmission connecting the electrical machine to this coupling, at a maximum speed of this electric machine.
- the speed threshold of the difference between the speed reference of the electric machine and its current speed is at most 300trs / min.
- the invention also relates to a hybrid motor vehicle equipped with an electric machine driving wheels by a clutch coupling, which comprises means implementing a control strategy of this electric machine comprising any one of the preceding features.
- the electric machine can drive the wheels disposed at the rear of the vehicle.
- FIG. 1 is a diagram showing the equipment of a hybrid vehicle implementing a control strategy according to the invention.
- FIG. 2 is a decision graph showing the operation of the control strategy.
- Figure 1 shows an electric vehicle traction machine 2 having a rotational speed, connected by a first transmission 4 to a dog clutch 6, comprising an upstream element connected to a downstream element when it is closed.
- the clutch coupling 6 is connected by a second transmission 8 to the wheels 10 of an axle of the vehicle.
- the first transmission 4 may include gear reduction, the first element of the coupling 6 rotating at a speed below this speed, or comprise a direct engagement with the shaft of the electric machine 2, the first element of the coupling then rotating at a speed which is the speed of this machine.
- the second transmission 8 can in the same way include a gear reduction, or a direct engagement with the wheels 10, for example in the case where the clutch coupling 6 is attached to the differential driving the rear wheels of the vehicle.
- the supervisor 12 then establishes requests sent to the electrical machine 2, including a speed setpoint 18, a torque setpoint 20, and a type of regulation which is required of it.
- the electric machine 2 then responds to these requests by generating a request. torque according to the instructions torque 20, to achieve a regime according to the regimen 18, applying the type of regulation requested.
- the torque setpoint 20 in preparation for closing the clutch coupling 6, the torque setpoint 20 enables the electric machine 2 to reach the speed setpoint 18 which it is requested as quickly as possible, in order to obtain the desired speed.
- intermediate of the first transmission 4 substantially the synchronization speed of the elements of this coupling, with an acceptable margin for a commitment without risk.
- FIG. 2 shows, in the case of a request for closing the clutch 30, a first selection 32 which calculates whether the speed difference of the two elements of the clutch coupling 6 is less than a speed threshold SV.
- a second selection 34 calculates whether the difference between the speed reference 18 and the current speed 16 of the electric machine 2 is greater than a speed threshold SR.
- At least one selection 32, 34 is negative, then there is an authorization 38 for regulating the electric machine 2, which can receive a torque setpoint equal to its maximum torque.
- the speed threshold SV of the coupling 6 and the speed threshold SR correspond to 300trs / min maximum of the electric machine 2. This maximum value can be reached with the coupling 6 closed given the information phase shifts, and games as well as the elasticity of the driveline.
- the electrical machine 2 can be put in a safe state 40 in order to ensure the safety of the vehicle, including in particular a cut of its control, or its control to deliver on the dog clutch coupling system. 6 a zero torque that accompanies the rotational speed changes of this coupling without applying effort on it.
- control strategy according to the invention increasing the general safety of the vehicle, is simple and economical to implement, requiring only adaptations of the control programs of the hybrid power train, without modification of components.
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1750115A FR3061689B1 (fr) | 2017-01-06 | 2017-01-06 | Controle d'une machine electrique de vehicule hybride pour la fermeture d'un accouplement a crabot |
| PCT/FR2017/053440 WO2018127634A1 (fr) | 2017-01-06 | 2017-12-07 | Controle d'une machine electrique de vehicule hybride pour la fermeture d'un accouplement a crabot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3565728A1 true EP3565728A1 (fr) | 2019-11-13 |
Family
ID=58501608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17822383.0A Withdrawn EP3565728A1 (fr) | 2017-01-06 | 2017-12-07 | Controle d'une machine electrique de vehicule hybride pour la fermeture d'un accouplement a crabot |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3565728A1 (fr) |
| CN (1) | CN110167777A (fr) |
| FR (1) | FR3061689B1 (fr) |
| MA (1) | MA47243A (fr) |
| WO (1) | WO2018127634A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115264046A (zh) * | 2022-06-23 | 2022-11-01 | 中国第一汽车股份有限公司 | 一种带有犬牙离合器的车辆控制方法和控制装置 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3103160B1 (fr) * | 2019-11-20 | 2021-10-15 | Psa Automobiles Sa | Procede de pilotage d'une machine motrice anticipant un regime de consigne lors d'une phase de synchronisation |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3261673B2 (ja) * | 1997-09-18 | 2002-03-04 | 本田技研工業株式会社 | 車両の発進アシスト装置 |
| JP2005001633A (ja) * | 2003-06-16 | 2005-01-06 | Nissan Motor Co Ltd | モータ式四輪駆動車 |
| FR2954441B1 (fr) * | 2009-12-17 | 2012-03-09 | Peugeot Citroen Automobiles Sa | Procede et systeme d'accouplement d'une machine electrique sur un train roulant de vehicule, notamment d'un vehicule automobile hybride |
| FR2954254B1 (fr) * | 2009-12-17 | 2012-03-09 | Peugeot Citroen Automobiles Sa | Procede et systeme de desaccouplement d'une machine electrique sur un train roulant de vehicule, notamment d'un vehicule automobile hybride |
| JP6064459B2 (ja) * | 2012-09-05 | 2017-01-25 | 株式会社ジェイテクト | 車両用駆動装置 |
| JP2014105826A (ja) * | 2012-11-29 | 2014-06-09 | Fuji Heavy Ind Ltd | クラッチ制御装置 |
| CN105946844B (zh) * | 2016-04-28 | 2018-09-14 | 广州汽车集团股份有限公司 | 混合动力车辆离合器接合的控制方法和系统 |
-
2017
- 2017-01-06 FR FR1750115A patent/FR3061689B1/fr active Active
- 2017-12-07 WO PCT/FR2017/053440 patent/WO2018127634A1/fr not_active Ceased
- 2017-12-07 CN CN201780082723.2A patent/CN110167777A/zh active Pending
- 2017-12-07 EP EP17822383.0A patent/EP3565728A1/fr not_active Withdrawn
- 2017-12-07 MA MA047243A patent/MA47243A/fr unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115264046A (zh) * | 2022-06-23 | 2022-11-01 | 中国第一汽车股份有限公司 | 一种带有犬牙离合器的车辆控制方法和控制装置 |
| CN115264046B (zh) * | 2022-06-23 | 2024-03-15 | 中国第一汽车股份有限公司 | 一种带有犬牙离合器的车辆控制方法和控制装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| MA47243A (fr) | 2019-11-13 |
| CN110167777A (zh) | 2019-08-23 |
| FR3061689A1 (fr) | 2018-07-13 |
| FR3061689B1 (fr) | 2019-05-24 |
| WO2018127634A1 (fr) | 2018-07-12 |
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