EP4017774A1 - Method and system for determining a value of an acceleration parameter used by an adaptive cruise control of a motor vehicle - Google Patents
Method and system for determining a value of an acceleration parameter used by an adaptive cruise control of a motor vehicleInfo
- Publication number
- EP4017774A1 EP4017774A1 EP20754006.3A EP20754006A EP4017774A1 EP 4017774 A1 EP4017774 A1 EP 4017774A1 EP 20754006 A EP20754006 A EP 20754006A EP 4017774 A1 EP4017774 A1 EP 4017774A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- value
- acceleration parameter
- vehicle
- parameter
- acceleration
- 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
- 230000001133 acceleration Effects 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000003044 adaptive effect Effects 0.000 title claims abstract description 24
- 238000013500 data storage Methods 0.000 claims description 9
- 230000010365 information processing Effects 0.000 claims description 3
- 238000004590 computer program Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
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- 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
- B60W30/14—Adaptive cruise control
- B60W30/16—Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
-
- 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
- B60W30/18109—Braking
- B60W30/18136—Engine braking
-
- 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
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0657—Engine torque
-
- 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
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/069—Engine braking signal
-
- 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
- B60W2540/215—Selection or confirmation of options
-
- 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
- B60W2554/00—Input parameters relating to objects
- B60W2554/80—Spatial relation or speed relative to objects
-
- 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
- B60W2554/00—Input parameters relating to objects
- B60W2554/80—Spatial relation or speed relative to objects
- B60W2554/802—Longitudinal distance
-
- 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
- B60W2554/00—Input parameters relating to objects
- B60W2554/80—Spatial relation or speed relative to objects
- B60W2554/804—Relative 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
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/10—Longitudinal speed
- B60W2720/106—Longitudinal acceleration
-
- 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
- B60W2754/00—Output or target parameters relating to objects
- B60W2754/10—Spatial relation or speed relative to objects
- B60W2754/30—Longitudinal distance
Definitions
- TITLE Method and system for determining a value of an acceleration parameter used by an adaptive cruise control of a motor vehicle
- the present invention relates to the field of adaptive speed regulators on board motor vehicles.
- the invention relates in particular to a method for determining, by a computer system on board a motor vehicle, a value of a setpoint acceleration parameter used by an adaptive cruise control of the vehicle to control the speed. instantaneous speed of movement of the vehicle.
- the invention also relates to a computer system implementing such a method.
- the invention applies in particular to passenger vehicles.
- the known adaptive cruise control systems are sometimes a source of discomfort for the occupants of the vehicle. Indeed, in a situation where a target vehicle decelerates a little without braking, the known adaptive speed regulators will immediately control the braking of the following vehicle in order to keep the pre-established inter-vehicle time. Then, as soon as the target vehicle accelerates again, known adaptive cruise control will then also control an acceleration of the following vehicle, which induces jerky behavior of the following vehicle which is a source of discomfort for its occupants.
- a particular object of the invention is to provide a method and a system which contribute to enable an adaptive cruise control to produce a smoother driving behavior, in particular in a situation such as that mentioned above.
- This object is achieved, according to a first object of the invention, by means of a determination method, by an on-board computer system. of a motor vehicle, of a value of a setpoint acceleration parameter used by an adaptive vehicle speed regulator to control the instantaneous speed of movement of the vehicle, the method comprising the steps of: determining a value d 'a first possible acceleration parameter as a function of a value of a first inter-vehicle time parameter,
- the method may comprise a step consisting in determining the value of an acceleration parameter resulting from the engine braking by interacting with an engine computer of the vehicle.
- the method can comprise a step consisting in acquiring the value of an acceleration parameter resulting from the engine brake by interacting with a data storage medium on which the value of an acceleration parameter resulting from the brake engine is saved.
- the value of a first inter-vehicle time parameter may be greater than the value of a second inter-vehicle time parameter by a value of between 0.2 s and 0.8 s.
- the invention also relates to a system which can be on board a motor vehicle and determine a value of a setpoint acceleration parameter used by an adaptive speed regulator of the vehicle to control the instantaneous speed. movement of the vehicle, the system comprising at least one information processing unit, comprising at least one processor, and a data storage medium configured to implement a method as described above.
- the invention also relates to a program comprising program code instructions for the execution of the steps of a method as described above when said program is executed on a computer.
- the subject of the invention is also a medium which can be used in a computer on which a program as described above is recorded.
- a subject of the invention is also a motor vehicle comprising a system as described above.
- FIG. 1 is a block diagram of a system according to the invention and [Fig. 2] is a flowchart illustrating the steps of a method according to the invention.
- a system 100 for determining a value of a setpoint acceleration parameter used by an adaptive speed regulator of a motor vehicle to control the instantaneous speed of movement of the vehicle is a computer system, shown in FIG. FIG. 1, which comprises an information processing unit 101, comprising one or more processors, a data storage medium 102, at least one input and output interface 103, allowing the reception of data (or signals) and the transmission of data (or signals), and, optionally, a graphical interface 104.
- the system 100 according to the invention is hosted on a computer, an electronic control unit or other telematics unit suitable for being on board a motor vehicle and for interacting with an adaptive cruise control system. a motor vehicle.
- the system 100 according to the invention forms an integral part of a computer for an adaptive cruise control on board a motor vehicle.
- the system 100 is able to interact not only with a adaptive cruise control of a motor vehicle but also with any equipment of a motor vehicle with which an adaptive cruise control is able to interact, in particular a detection device such as a radar arranged in the front bumper of a motor vehicle by means of which, in a completely conventional manner, an adaptive speed controller of a motor vehicle is able to determine a value of an acceleration parameter which it uses to control the instantaneous speed of movement of the motor vehicle.
- a detection device such as a radar arranged in the front bumper of a motor vehicle by means of which, in a completely conventional manner, an adaptive speed controller of a motor vehicle is able to determine a value of an acceleration parameter which it uses to control the instantaneous speed of movement of the motor vehicle.
- a value of a first inter-vehicle time parameter and a value of a second inter-vehicle time parameter are recorded on the support of. data storage 102.
- the value of a second inter-vehicle time parameter is less than the value of a first inter-vehicle time parameter, for example by a value between 0.2 s and 0 , 8 s.
- on the data storage medium 102 is also recorded a value of an acceleration parameter resulting from the engine braking.
- the value of an acceleration parameter resulting from the engine braking can be recorded beforehand on the data storage medium 102 during its design or on command of the system 100 according to the invention during its operation.
- the system 100 also comprises hardware means (eg connectors) and software dedicated to interact with an engine computer of a motor vehicle in order to be able to determine the value of an acceleration parameter resulting from the brake. engine based on, for example, an engaged gearbox ratio, slope measurement using an accelerometer and the derivative of the wheel speeds, of an estimated vehicle mass, etc.
- hardware means eg connectors
- software dedicated to interact with an engine computer of a motor vehicle in order to be able to determine the value of an acceleration parameter resulting from the brake. engine based on, for example, an engaged gearbox ratio, slope measurement using an accelerometer and the derivative of the wheel speeds, of an estimated vehicle mass, etc.
- all the elements described above contribute to allow the system 100 according to the invention to implement a method for determining a value of a setpoint acceleration parameter used by an adaptive speed regulator. of a motor vehicle to control the instantaneous speed of movement of the vehicle, as described below in connection with FIG. 2.
- the system 100 determines a value of a first possible acceleration parameter as a function of the value of a first inter-vehicle time parameter.
- the value of a first inter-vehicle time parameter is extracted from the data storage medium 102 and used in a conventional manner, ie by implementing steps similar to those implemented by the adaptive speed governors. known, in order to determine the value of the first possible acceleration parameter.
- the system 100 determines a value of a second possible acceleration parameter as a function of the value of a second time parameter inter-vehicle.
- the value of a second inter-vehicle time parameter is less than the value of a first inter-vehicle time parameter
- the value of a first conceivable acceleration parameter is necessarily less than the value of a second possible acceleration parameter.
- a third step 203 of the method according to the invention when the value of a first conceivable acceleration parameter is less than the value of an acceleration parameter resulting from the engine brake and when the value of a parameter acceleration resulting from the engine brake is less than the value of a second possible acceleration parameter, the system 100 according to the invention establishes the value of a setpoint acceleration parameter equal to the value of a parameter d acceleration resulting from engine braking.
- the system 100 according to the invention establishes the value of a setpoint acceleration parameter equal to the value of a first conceivable acceleration parameter.
- the system 100 when the value of an acceleration parameter resulting from the engine brake is greater than the value of a second conceivable acceleration parameter, the system 100 according to the invention establishes the value of a setpoint acceleration parameter equal to the value of a first possible acceleration parameter or to the value of a second possible acceleration parameter.
- the functional bricks are provided to enable an adaptive cruise control of a motor vehicle to produce a more flexible driving behavior and therefore more comfortable for the occupants of the vehicle equipped with it.
- the system and the method according to the invention will allow this to be an acceleration resulting from the engine braking which is favored instead of a braking, which indeed allows the provision of 'a more flexible driving behavior corresponding to that of a driver lifting the foot.
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Controls For Constant Speed Travelling (AREA)
- Control Of Electric Motors In General (AREA)
- Feedback Control In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1909365A FR3100017B1 (en) | 2019-08-23 | 2019-08-23 | Method and system for determining a value of an acceleration parameter used by an adaptive cruise control of a motor vehicle |
PCT/FR2020/051327 WO2021038148A1 (en) | 2019-08-23 | 2020-07-22 | Method and system for determining a value of an acceleration parameter used by an adaptive cruise control of a motor vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4017774A1 true EP4017774A1 (en) | 2022-06-29 |
Family
ID=69104596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20754006.3A Pending EP4017774A1 (en) | 2019-08-23 | 2020-07-22 | Method and system for determining a value of an acceleration parameter used by an adaptive cruise control of a motor vehicle |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4017774A1 (en) |
FR (1) | FR3100017B1 (en) |
WO (1) | WO2021038148A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5839534A (en) * | 1995-03-01 | 1998-11-24 | Eaton Vorad Technologies, Llc | System and method for intelligent cruise control using standard engine control modes |
FR2847016B1 (en) * | 2002-11-08 | 2005-01-28 | Renault Sa | METHOD FOR SELECTING TRANSMISSION RATIO FOR A VEHICLE |
FR2912981B1 (en) | 2007-02-22 | 2009-04-17 | Peugeot Citroen Automobiles Sa | AUTOMATIC VEHICLE DRIVER CONTROL METHOD COMPRISING AN ACC SYSTEM |
FR2975958B1 (en) * | 2011-06-03 | 2013-05-31 | Renault Sa | SPEED CONTROL CONTROL FOR A VEHICLE |
JP6380339B2 (en) * | 2015-11-11 | 2018-08-29 | トヨタ自動車株式会社 | Vehicle travel control device |
-
2019
- 2019-08-23 FR FR1909365A patent/FR3100017B1/en active Active
-
2020
- 2020-07-22 EP EP20754006.3A patent/EP4017774A1/en active Pending
- 2020-07-22 WO PCT/FR2020/051327 patent/WO2021038148A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
FR3100017B1 (en) | 2021-07-23 |
FR3100017A1 (en) | 2021-02-26 |
WO2021038148A1 (en) | 2021-03-04 |
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Legal Events
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Effective date: 20220204 |
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DAX | Request for extension of the european patent (deleted) | ||
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RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: STELLANTIS AUTO SAS |
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17Q | First examination report despatched |
Effective date: 20231122 |