WO2022184397A1 - Antriebssteuersystem für ein elektromotorisch betreibbares kraftfahrzeug mit einer fahrstufenwähleinrichtung - Google Patents
Antriebssteuersystem für ein elektromotorisch betreibbares kraftfahrzeug mit einer fahrstufenwähleinrichtung Download PDFInfo
- Publication number
- WO2022184397A1 WO2022184397A1 PCT/EP2022/053185 EP2022053185W WO2022184397A1 WO 2022184397 A1 WO2022184397 A1 WO 2022184397A1 EP 2022053185 W EP2022053185 W EP 2022053185W WO 2022184397 A1 WO2022184397 A1 WO 2022184397A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- creep
- torque
- control system
- drive control
- drive
- 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.)
- Ceased
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
- B60L15/2063—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 for creeping
-
- 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
-
- 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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18063—Creeping
-
- 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
- B60W50/08—Interaction between the driver and the control system
- B60W50/082—Selecting or switching between different modes of propelling
-
- 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
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/08—Range selector apparatus
-
- 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
-
- 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
- B60L2250/00—Driver interactions
- B60L2250/26—Driver interactions by pedal actuation
- B60L2250/28—Accelerator pedal thresholds
-
- 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
- B60W2540/00—Input parameters relating to occupants
- B60W2540/10—Accelerator pedal position
-
- 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
- B60W2540/00—Input parameters relating to occupants
- B60W2540/12—Brake pedal position
Definitions
- the invention relates to a drive control system for a motor vehicle that can be operated by an electric motor, having a gear selection device, an electronic accelerator pedal, a brake pedal and an electronic control unit which is connected to the gear selection device, the accelerator pedal and the brake pedal.
- DE 102017222819 A1 deals with a solution to the problem that the so-called “one pedal feeling” is not perceived as advantageous in all situations. Furthermore, for example, in EP 0822 128 B1, the problem of creaking brakes when crawling is dealt with.
- the invention is based on the object of further improving the comfort in electrified motor vehicles, in particular with a purely electric drive.
- the invention relates to a drive control system for a motor vehicle that can be operated by an electric motor, with a gear selector, with an electronic accelerator pedal, with a brake pedal and with an electronic control unit, which is in particular electrically connected to the gear selector, the accelerator pedal and the brake pedal in order to control their actuation and/or actual -To detect the position via appropriate sensors in the usual way.
- the control unit is designed, for example, by means of an appropriately programmed software module such that when a first alternative automatic gear is selected (in particular an automatic gear “B” or “i” or “e”, which is a for purely electric vehicles (“ BEV”) has characteristic driving behavior) a creep function is deactivated and that a creep function is activated when a second alternative automatic gear is selected (in particular a drive automatic gear that is customary in automatic transmissions with the designation "D").
- a first alternative automatic gear in particular an automatic gear “B” or “i” or “e”, which is a for purely electric vehicles (“ BEV”) has characteristic driving behavior
- BEV a creep function
- a creep function is activated when a second alternative automatic gear is selected (in particular a drive automatic gear that is customary in automatic transmissions with the designation "D").
- the control unit also contains a correspondingly programmed function module, which, when the creep function is activated, based on a creep pre-control, reduces the creep torque specified in this way in the form of a drive torque depending on the driver's braking request, with a friction braking torque being generated by the usual wheel brake system only and only then is switched on when the minimum possible creep torque (z. B. zero or the maximum possible recuperation torque) is reached.
- the driver's braking request is usually detected, for example, by the detected brake pressure on the brake pedal.
- the specified creep torque is reduced only within a defined lower speed/friction braking torque range depending on the driver's braking request.
- This speed-friction braking torque range is defined in particular by empirically determining the occurrence of wheel-brake groaning.
- the creep torque is preferably reduced in proportion to the driver's braking request.
- the creep torque specified as part of the creep pre-control is preferably determined at least as a function of the vehicle speed; because creaking occurs primarily at comparatively low vehicle speeds with low negative acceleration.
- the gear selector device has a self-resetting shift button for selecting the first alternative automatic gear or the second alternative automatic gear, whereby each time the shift button is pressed against the direction of travel, starting from a of the two alternative automatic gears, the other one can be selected.
- the invention also includes an electronic control unit and at least one software function module for the electronic control unit of the drive control system according to the invention.
- the invention is based on the following considerations:
- acoustic problems also occur in electrified motor vehicles with e-machine drive technologies due to brake groaning when the drive torque is braced against the friction brake of the vehicle service brake when creeping.
- the creep pre-control is reduced according to the invention only as a function of the braking request.
- the friction brake must then balance the friction brake component against the drive torque and may only become active when the creeping drive torque is at least zero.
- the drive torque should be reduced in a controlled manner down to 0 [Nm].
- the friction brake must not be active despite the brake driver's request, or the reduced creep torque is balanced against the brake driver's request.
- the friction brake may only become active when the drive torque has completely dissipated.
- a further aim of this invention is, through the introduction of an additional gear, here called “B", which can be selected as an alternative to the usual gear “D" in automatic transmission vehicles, in a vehicle that can be operated by an electric motor, to have the advantages of the driving styles of a vehicle with a combustion engine and an electric vehicle Combine the one-pedal feeling and let the driver decide which driving style should be used at the moment.
- B an additional gear
- FIG. 1 shows a schematic overview of the essential components of the drive system according to the invention with the selection of the two alternative automatic driving stages
- FIG. 2 in a schematic representation an overview of a
- FIG. 3 is a diagrammatic illustration of a prior art creep function
- the creep function. 1 shows a drive control system for a motor vehicle that can be operated by an electric motor with an electronic control unit 2 which is electrically connected to a gear selector 1 , to a display and operating unit 3 , to an accelerator pedal 5 and to a brake pedal 6 .
- the gear selector 1 can have an actuating element 7 in the form of a self-resetting shift button for selecting different gears R, N, D or B, whereby each time the shift button is actuated against the direction of travel, starting from one of the two alternative automatic gears D and B, the each other can be selected.
- the electronic control unit 2 is configured in particular by means of a correspondingly programmed software module 4 such that when a first alternative automatic gear “B” is selected and the accelerator pedal is released, a comparatively high (preferably maximum) recuperation level is set and creep is deactivated and that when a second alternative automatic gear “D” is selected when the accelerator pedal is released, at least one selectable fixed recuperation level or (particularly auto-adaptive) coasting mode can be specified and creep is activated.
- the recuperation stage can preferably be configured by the driver, for example via a display and operating unit 3 .
- the driver can choose between "adaptive recuperation” or a preferred, fixed recuperation level (here e.g. high/medium/low).
- adaptive recuperation via camera, radar and navigation data), the vehicle automatically selects the correct deceleration depending on the traffic situation.
- control unit 2 with the software module 4 is further designed in such a way that when the second alternative automatic A creep function is activated in driving position "D", in which, based on a creep pre-control M_KR_vor, the creep torque M_KR specified in this way is reduced in the form of a drive torque depending on a braking request M_FW by the driver, with a friction braking torque M_RB only being switched on when the minimum possible creep torque is reached is.
- the creep torque M_KR specified by the creep pre-control M_KR_vor is preferably determined as a function of the vehicle speed v.
- a raw creep torque M_KR ' dependent on the vehicle speed v is multiplied by a factor F between 0 and 1.
- the factor F is read from a map that specifies a value between 0 and 1 depending on the vehicle speed v and the friction braking torque M_RB.
- Figure 3 shows the effect of a prior art creep function.
- creep torque M_KR is carried out independently of the driver's braking request M_FW.
- the braking request M_FW is served solely by the friction braking torque M_RB of the service brake. This leads to an unsteady deceleration profile of the vehicle speed v and, as a result, to brake groaning for particularly low values of the vehicle speed or the deceleration.
- the friction brake should therefore be used as little as possible.
- the creep function according to the invention is shown in more detail in FIG. 4 using an exemplary embodiment:
- the creep torque M_KR specified with it - preferably only within a defined lower speed-friction braking torque- Area KF - reduced depending on the driver's braking request M_FW.
- This lower speed/friction braking torque range KF is shown schematically in FIG. 2 as the range KF that is particularly relevant to the creaking problem.
- Area KF defines that vehicle speed v should be less than a first threshold value S1 and friction braking torque M_RB should be less than a second threshold value S2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Control Of Transmission Device (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202280007644.6A CN116507543A (zh) | 2021-03-05 | 2022-02-10 | 具有行驶速度级选择装置的用于可电动运行的机动车的驱动控制系统 |
| US18/270,960 US12617295B2 (en) | 2021-03-05 | 2022-02-10 | Drive control system for a motor vehicle operable by electric motor and having a gear selector |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021105340.4A DE102021105340A1 (de) | 2021-03-05 | 2021-03-05 | Antriebssteuersystem für ein elektromotorisch betreibbares Kraftfahrzeug mit einer Fahrstufenwähleinrichtung |
| DE102021105340.4 | 2021-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022184397A1 true WO2022184397A1 (de) | 2022-09-09 |
Family
ID=80682304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2022/053185 Ceased WO2022184397A1 (de) | 2021-03-05 | 2022-02-10 | Antriebssteuersystem für ein elektromotorisch betreibbares kraftfahrzeug mit einer fahrstufenwähleinrichtung |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN116507543A (de) |
| DE (1) | DE102021105340A1 (de) |
| WO (1) | WO2022184397A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024162938A1 (en) * | 2023-02-01 | 2024-08-08 | Turkiye'nin Otomobili Girisim Grubu Sanayi Ve Ticaret Anonim Sirketi | A system for providing dynamic creep mode in vehicles |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023003346A1 (de) | 2023-08-12 | 2025-02-13 | Mercedes-Benz Group AG | Verfahren und Vorrichtung zum Betrieb eines elektrisch angetriebenen Fahrzeugs |
| DE102024101108A1 (de) * | 2024-01-16 | 2025-07-17 | Avl Software And Functions Gmbh | Verfahren zur Anpassung der Kriechgeschwindigkeit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0822128B1 (de) | 1996-07-31 | 2001-10-17 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Verfahren zum kurzzeitigen Anhalten eines Fahrzeuges |
| DE102009037182A1 (de) * | 2009-08-12 | 2011-02-17 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Steuern bzw. Regeln des Kriechmoments eines Fahrzeugs mit Elektroantrieb |
| DE102017222819A1 (de) | 2017-12-14 | 2019-06-19 | Bayerische Motoren Werke Aktiengesellschaft | Antriebssteuersystem für ein elektromotorisch betreibbares Kraftfahrzeug mit einer Fahrstufenwähleinrichtung |
| US20200101956A1 (en) * | 2018-09-28 | 2020-04-02 | Honda Motor Co., Ltd. | Control device, control method, and non-transitory computer-readable storage medium |
| DE102019103375A1 (de) * | 2019-02-11 | 2020-08-13 | Bayerische Motoren Werke Aktiengesellschaft | Steuereinheit zur Bereitstellung einer One-Pedal-Feeling- und/oder Kriech-Funktion |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9308831B2 (en) | 2012-04-27 | 2016-04-12 | GM Global Technology Operations LLC | System and method for controlling vehicle creep torque |
| DE102012015617A1 (de) | 2012-08-07 | 2014-02-13 | Daimler Ag | Verfahren zu einer Steuerung und/oder Regelung eines Kriechbetriebs eines Kraftfahrzeugs |
| JP6653556B2 (ja) | 2015-11-26 | 2020-02-26 | ジヤトコ株式会社 | 電動車両の制御装置及び制御方法 |
| DE102017221464A1 (de) | 2017-11-29 | 2019-05-29 | Audi Ag | Elektrisch betriebenes Fahrzeug mit Kriechfunktion |
| CN111942170B (zh) * | 2019-05-16 | 2023-08-01 | 罗伯特·博世有限公司 | 车辆蠕行控制装置以及车辆蠕行控制方法 |
| US10960882B2 (en) * | 2019-06-18 | 2021-03-30 | Ford Global Technologies, Llc | Method and system for creep torque control |
| GB2599104B (en) * | 2020-09-23 | 2023-04-12 | Jaguar Land Rover Ltd | Creep torque control system for a vehicle |
-
2021
- 2021-03-05 DE DE102021105340.4A patent/DE102021105340A1/de active Pending
-
2022
- 2022-02-10 WO PCT/EP2022/053185 patent/WO2022184397A1/de not_active Ceased
- 2022-02-10 CN CN202280007644.6A patent/CN116507543A/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0822128B1 (de) | 1996-07-31 | 2001-10-17 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Verfahren zum kurzzeitigen Anhalten eines Fahrzeuges |
| DE102009037182A1 (de) * | 2009-08-12 | 2011-02-17 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Steuern bzw. Regeln des Kriechmoments eines Fahrzeugs mit Elektroantrieb |
| DE102017222819A1 (de) | 2017-12-14 | 2019-06-19 | Bayerische Motoren Werke Aktiengesellschaft | Antriebssteuersystem für ein elektromotorisch betreibbares Kraftfahrzeug mit einer Fahrstufenwähleinrichtung |
| US20200101956A1 (en) * | 2018-09-28 | 2020-04-02 | Honda Motor Co., Ltd. | Control device, control method, and non-transitory computer-readable storage medium |
| DE102019103375A1 (de) * | 2019-02-11 | 2020-08-13 | Bayerische Motoren Werke Aktiengesellschaft | Steuereinheit zur Bereitstellung einer One-Pedal-Feeling- und/oder Kriech-Funktion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024162938A1 (en) * | 2023-02-01 | 2024-08-08 | Turkiye'nin Otomobili Girisim Grubu Sanayi Ve Ticaret Anonim Sirketi | A system for providing dynamic creep mode in vehicles |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021105340A1 (de) | 2022-09-08 |
| CN116507543A (zh) | 2023-07-28 |
| US20240059159A1 (en) | 2024-02-22 |
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