WO2024008682A1 - Procede d'optimisation de la consommation energetique d'un vehicule - Google Patents
Procede d'optimisation de la consommation energetique d'un vehicule Download PDFInfo
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- WO2024008682A1 WO2024008682A1 PCT/EP2023/068315 EP2023068315W WO2024008682A1 WO 2024008682 A1 WO2024008682 A1 WO 2024008682A1 EP 2023068315 W EP2023068315 W EP 2023068315W WO 2024008682 A1 WO2024008682 A1 WO 2024008682A1
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- vehicle
- road infrastructure
- computer
- state
- infrastructure element
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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
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18109—Braking
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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
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18154—Approaching an intersection
-
- 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
- B60W50/0097—Predicting future conditions
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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
- B60W2555/00—Input parameters relating to exterior conditions, not covered by groups B60W2552/00, B60W2554/00
- B60W2555/60—Traffic rules, e.g. speed limits or right of way
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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
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/10—Longitudinal speed
- B60W2720/103—Speed profile
Definitions
- the invention relates to a method for optimizing the energy consumption of a vehicle.
- the process is implemented in an on-board computer within the vehicle.
- the invention also relates to a method, implemented in an on-board computer within the vehicle, for controlling the speed of the vehicle, the method comprising such a sub-process for optimizing the energy consumption of the vehicle.
- the invention also relates to a computer intended to be embedded within a vehicle, the computer comprising means for implementing the steps of such a method of optimizing the energy consumption of the vehicle; as well as a vehicle, in particular an automobile, incorporating such a computer.
- the vehicle is typically but not limited to an autonomous or semi-autonomous vehicle.
- the invention finally relates to a computer program product comprising program instructions configured to implement the steps of such a method of optimizing the energy consumption of the vehicle.
- a known solution called “predictive green wave” involves coordinating vehicle speed and/or traffic light phases, so that the vehicle reaches each successive traffic light when it is green (or in its "open” state). >). The vehicle then does not need to stop, and can therefore pass through each traffic light at non-zero speed. To do this, the vehicle must be connected to a static and/or dynamic data management system relating to road infrastructure and/or road traffic, and the traffic lights must have an operating cycle or a change period. state that is predictable.
- Such a management system is for example configured according to a “cloud” architecture (or “cloud” in English) and makes it possible to provide (or even to predict) a time horizon as to the operating cycle (or period of change of state) of the traffic lights detected in front of the vehicle on its route, depending in particular on the speed of the vehicle and the density of traffic on the road.
- operating cycle or “period of change of state” of a traffic light, we mean the respective durations of the “green”, “yellow” and “red” phases or states of this traffic light - supposed to form a recurring repetitive cycle with a constant period, or a predictable period depending on other parameters known elsewhere (such as for example time, place, city, or even the type of road or crossing).
- phase or “state” of a traffic light we mean the current color of the light emitted by this light, as well as the duration of emission of this colored light (for example “red” during the next five seconds, or even “green” for the next eight seconds, etc.)
- duration of emission of this colored light for example “red” during the next five seconds, or even “green” for the next eight seconds, etc.
- vehicle speeds are calculated as constant values (or average values), with synchronization of different light reaching times so that each vehicle reaches each light when it is at the green (thus making it possible to minimize or even eliminate idling or stopping at red lights).
- the calculation of the vehicle's speed so that it reaches each light when it is green is based solely on a temporal criterion.
- a disadvantage of such a solution is that it does not take into account the criterion of minimizing the individual energy consumption of each vehicle (in fuel and/or in electrical energy from an electrical storage battery). Only overall traffic flows are considered, typically for timetable synchronization and overall fuel consumption reduction corresponding to a fleet of vehicles.
- road infrastructure element we mean, for example, a road traffic light, a railway level crossing or a crossing of tramway tracks, or any other infrastructure element presenting a first open or passing state. and a second closed or blocking state.
- the invention thus relates, in its broadest acceptance, to a method, implemented in an on-board computer within a vehicle, for optimizing the energy consumption of the vehicle, the vehicle computer.
- the vehicle computer being connected to a system for managing static and/or dynamic data relating to road infrastructure and/or road traffic, said static and/or dynamic data comprising state data relating to at least one element of road infrastructure having a first open or passing state and a second closed or blocking state, the road infrastructure element operating alternately in its first state and in its second state according to a fixed, predetermined and predictable operating cycle, said operating cycle and said other static and/or dynamic data relating to the road infrastructure and/or road traffic being provided as input to the computer, the vehicle being further provided with a navigation and vehicle positioning system connected to the computer, the route of the vehicle over a predetermined distance being predefined or predicted within the calculator, the calculator being configured to calculate an optimal speed profile of the vehicle according to a predefined calculation method, said calculation method being configured to allow minimization of the energy consumption of the vehicle vehicle, the process comprising the
- ⁇ a calculation, as a function of the determined distance, of an optimal speed profile of the vehicle in a third calculation mode of the calculation method in which the speed of the vehicle at the time of reaching said road infrastructure element is left free, and the duration for the vehicle to reach the road infrastructure element is fixed as being the duration of passage of the road infrastructure element to the next first open or passing state reachable by the vehicle, said duration being provided in input of the calculation method, the road infrastructure element being assumed to have just passed into its first open or passing state at the time when the vehicle will reach the road infrastructure element;
- the term “reachable” means the fact that a road infrastructure element is located at a distance from the vehicle such that the vehicle can reach this road infrastructure element in the state. expected from the road infrastructure element (ie first open or passing state or second closed or blocking state).
- the method according to the invention comprises a set of successive optimization steps, aimed at determining an optimal speed profile to cover the distance between the current position of the vehicle and the next element of road infrastructure, by minimizing the criterion of the vehicle's energy consumption.
- the method according to the invention thus implements, alternatively, different modes of optimization (or calculation) depending on the verification or not of certain conditions (verified according to certain predefined hypotheses).
- the objective is to anticipate the upcoming state or phase of the road infrastructure element so that the vehicle crosses the road infrastructure element when the latter is in its open or passing state, or else stops at this element of road infrastructure when the latter is in its closed or blocking state, and this with minimal energy cost.
- an optimal speed profile is calculated for the vehicle so as to obtain the minimum energy consumption during the journey from the current position of the vehicle to the position of the next road infrastructure element to come on the route, in the one of the optimization (or calculation) modes mentioned above.
- the different stages of the process are calculated as quickly as possible within the on-board computer, as soon as the next element of road infrastructure is detected by the vehicle (with a known distance to this element, and a phase or state of the element known in its cycle or period of operation).
- the method according to the invention thus makes it possible to calculate the best speed profile to follow for the vehicle to reach the next element of road infrastructure by covering the distance from the current position of the vehicle to this element.
- the method provides optimal temporal synchronization with the phase or state of the road infrastructure element (at the time the vehicle will reach this element) while allowing minimization of the vehicle's energy consumption.
- the method further comprises a step, implemented when no step of calculating an optimal speed profile of the vehicle gives an acceptable solution for the vehicle, of calculating, as a function of the determined distance, a optimal speed profile of the vehicle in a fourth mode of calculation of the calculation method in which the speed of the vehicle at the time of reaching said road infrastructure element is set to a zero value, and the duration for the vehicle to reach the road infrastructure element is fixed as being the duration of passage of the road infrastructure element to the next second closed or blocking state, said vehicle speed and said duration being provided as input to the calculation method, the road infrastructure element being assumed to come just to pass into its second closed or blocking state when the vehicle reaches the road infrastructure element; and a step of taking into account, by the calculator, the optimal speed profile of the calculated vehicle, to apply or recommend said optimal speed profile to the vehicle.
- the vehicle also carries means for measuring or estimating the distance between the vehicle and another vehicle immediately preceding the vehicle and/or means for measuring or estimating the relative speed of said other vehicle, said means measurement or estimation being connected to the computer, and the method further comprises a step of detecting at least one other vehicle traveling in the same direction as the vehicle and located between the vehicle and the next element of road infrastructure , on the route of the vehicle, and, if at least one such other vehicle is detected, a step consisting of determining the distance between the vehicle and said other vehicle immediately preceding the vehicle on its route, then replacing, before the first calculation step, the distance determined between the vehicle and the next element of road infrastructure by said distance between the vehicle and said such other vehicle immediately preceding the vehicle on its route.
- the relative speed of the other vehicle is for example estimated by the on-board computer as a function of the operating cycle of the road infrastructure element and a model of vehicle reactions during of the passage of a road infrastructure element from its closed or blocking state to its open or passing state and vice versa (the model can for example be pre-recorded, or based on prediction equations, or even based on any other device... ).
- the method further comprises a phase of detection of at least one condition or at least one predetermined event, and, if at least one such condition or such a predetermined event is detected , the method loops back to the step of determining the distance between the vehicle and the next element of road infrastructure located on the vehicle's route, taking into account the new current position of the vehicle.
- This makes it possible to take into account any disturbance type event on the vehicle's route, or any deviation in the actual speed of the vehicle and/or the state of the next element of road infrastructure compared to the predictions made, which could occur. produce before the vehicle reaches the position of this element of road infrastructure.
- said predefined calculation method is a calculation method implementing the Pontryagin maximum principle.
- said at least one road infrastructure element is a road traffic light, for example a two-color or three-color light.
- the open or passing state then corresponds to the green color of the light emitted by the traffic light.
- the closed or blocking state corresponds to the red color of the light emitted by the traffic light.
- the open or passing state may correspond to a non-emission of light (or raised barriers), and the closed or blocking state can correspond to a flashing light for example (or lowered barriers).
- the invention also relates to a method, implemented in an on-board computer within a vehicle, for controlling the speed of the vehicle, the vehicle computer being connected to a static and/or dynamic data management system.
- said static and/or dynamic data comprising state data relating to at least one element of road infrastructure having a first open or passing state and a second closed or blocking state , the road infrastructure element operating alternately in its first state and in its second state according to a fixed, predetermined and predictable operating cycle, said operating cycle and said other static and/or dynamic data relating to the road infrastructure and /or to road traffic being provided as input to the computer, the vehicle being further provided with a navigation and positioning system of the vehicle and a powertrain both connected to the computer, the route of the vehicle over a predetermined distance being predefined or predicted within the calculator, the calculator being configured to calculate an optimal speed profile of the vehicle according to a predefined calculation method, said calculation method being configured to allow minimization of the energy consumption of the vehicle, the method comprising in in addition to a sub
- This control method allows filtering of the vehicle speed, according to the optimal speed profile of the vehicle taken into account to minimize the energy consumption of the vehicle.
- the control method can be implemented when the vehicle computer is connected to a speed regulator provided with means for calculating a set speed and itself connected to the powertrain, or when the computer is on board within of an autonomous or semi-autonomous vehicle.
- the invention also relates to a computer intended to be embedded within a vehicle, the route of the vehicle over a distance predetermined being predefined or predicted within the calculator, the calculator being configured to calculate an optimal speed profile of the vehicle according to a predefined calculation method, said calculation method being configured to allow minimization of the energy consumption of the vehicle, the calculator comprising means for implementing the steps of one of the processes as described above.
- the invention also relates to a vehicle, in particular an automobile, the vehicle embedding a computer as described above and a vehicle navigation and positioning system connected to the computer, the computer being able to be connected to a management system static and/or dynamic data relating to road infrastructure and/or road traffic.
- the vehicle further comprises a display device capable of displaying a speed of the vehicle and/or a speed regulator provided with means for calculating a set speed and connected to a group powertrain of the vehicle, said display device and/or said speed regulator being connected to the computer.
- the vehicle is an autonomous or semi-autonomous vehicle.
- the invention also relates to a computer program product, downloadable from a communications network and/or recorded on a computer-readable medium and/or executable by a processor, the computer program product comprising program instructions, said program instructions being configured to implement the steps of one of the methods as described above when said instructions are executed on a computer as described above.
- FIG.1 schematically illustrates an assembly comprising a vehicle and a road traffic light, the vehicle being equipped with an on-board computer;
- FIG.2 is a flowchart representing a method for controlling the speed of a vehicle, comprising a sub-process for optimizing the energy consumption of the vehicle, implemented by the calculator of Figure 1, according to the present invention;
- FIG.3 schematically illustrates an operating cycle as well as a time horizon for predicting the states of the road traffic light in Figure 1.
- the present invention relates to a method, implemented in a computer 4 on board a vehicle 2 (visible in Figure 1), for controlling the speed of the vehicle 2.
- vehicle 2 is typically a motor vehicle, for example (but not limited to) an autonomous or semi-autonomous vehicle.
- the vehicle 2 moves within a road environment in which one or more elements of road infrastructure 6 are arranged.
- Each road infrastructure element 6 (which is for example a traffic light in the particular embodiment of Figure 1) has a first open or passing state and a second closed or blocking state.
- the first open or passing state corresponds to the green color of the light emitted by the light
- the second closed or blocking state corresponds to the red color .
- Each road infrastructure element 6 operates alternately in its first state and in its second state according to a fixed, predetermined and predictable operating cycle 7.
- Such an operating cycle 7 is illustrated by way of example in Figure 3, for a road traffic light 6.
- the phases of the cycle 7 corresponding to the first open or passing state of the road traffic light 6 are materialized by the reference E1
- the phases of cycle 7 corresponding to the second closed or blocking state are materialized by the reference E2.
- the abscissa axis corresponds to the time axis
- a third state E3 of the road traffic light 6 is represented (this third state E3 corresponds to an intermediate “orange” state of the road traffic light 6) .
- the computer 4 is for example part of a data processing unit storing an application or computer program capable of cooperating with the computer 4 (the data processing unit and the application or the computer program not being represented on Figure 1 for clarity). Alternatively, the application or computer program is stored directly in the computer 4.
- the computer 4 is connected to the powertrain of the vehicle (not shown) and to a system 8 for managing static and/or dynamic data relating to road infrastructure and/or road traffic. More precisely, the computer 4 is for example connected to the static and/or dynamic data management system 8 via wireless communication means 10 on-board within the vehicle 2.
- the wireless communication means 10 are for example made up of a data transmitter/receiver coupled to a SIM card type electronic communication card (Subscriber Identity Module).
- the static and/or dynamic data management system 8 is for example configured according to a “cloud” architecture (or “cloud” in English) and makes it possible to provide (or even predict) a time horizon H1 as to the operating cycle 7 (or period of change of state) of the road infrastructure elements 6 detected in front of the vehicle on its route, depending in particular on the speed of the vehicle and the density of traffic on the road.
- the static and/or dynamic data managed by the management system 8 and transmitted to the computer 4 of the vehicle include in particular state data relating to the road infrastructure elements 6.
- the time horizon H1 provided (or predicted) by the management system 8 is visible in Figure 3, and makes it possible to obtain the states or phases of each road infrastructure element 6 detected in front of the vehicle, in the time interval defined by the time horizon H1.
- the management system 8 is for example a system of the "electronic information horizon" type (or “eHorizon” in English, which is conventionally based on the ADASIS data format standard - from the English “Advanced Driver- Assistance Systems Interface Specifications” – for predictive driver assistance systems, or any other type of device).
- an “eHorizon” type system makes it possible to manage both static data relating to the road infrastructure (such as for example the nature of the roads, intersections, regulatory speed limits applied, etc.) , as dynamic data (average speed of vehicles located on the road, traffic density, dynamic data relating to road infrastructure elements 6, etc.).
- Such an “eHorizon” type system is capable of receiving this data, decoding it (via a decoder), reconstituting it (via a data reconstructor), and transmitting it to the computer 4, and implements algorithms for vehicle path prediction 2 using the notion of “Most Probable Path” in English.
- the calculator 4 is configured to calculate an optimal speed profile of the vehicle 2 according to a predefined calculation method.
- This predefined calculation method (which is for example pre-recorded in the data processing unit comprising the calculator 4) is configured to allow minimization of the energy consumption of the vehicle 2.
- This predefined calculation method is for example a method of calculation implementing the Pontryagin maximum principle.
- the calculation method can be any other calculation method implementing a fixed or free final state optimization and allowing minimization of the energy consumption of the vehicle 2 (such as for example a dynamic programming method - "Dynamic Programming") in English, or even a Lagrange method or a method based on neural networks).
- the vehicle 2 also has a navigation and positioning system 12 for the vehicle 2, connected to the computer 4.
- the navigation and positioning system 12 is for example a GPS system ( from the English “Global Positioning System”).
- the navigation map implemented within the navigation and positioning system 12 is instrumented.
- the vehicle 2 also carries a display device 14 (such as a screen for example), connected to the computer 4.
- the vehicle 2 also carries an ADAS driving assistance device 16 (of English “Advanced Driver-Assistance Systems”) of radar or LiDAR type, connected to the computer 4.
- Such an ADAS 16 driving assistance device typically forms a means of measuring or estimating the distance between the vehicle 2 and another vehicle immediately preceding vehicle 2, and/or a means of measuring or estimating the relative speed of this other vehicle.
- the vehicle 2 also includes a speed regulator (not shown) provided with means for calculating a set speed and connected to the powertrain of the vehicle 2 on the one hand, and to the calculator 4 on the other hand.
- the method includes a sub-process 20, implemented in the computer 4 on board a vehicle 2, for optimizing the energy consumption of the vehicle 2.
- the operating cycle 7 (at least over the time horizon H1) of each road infrastructure element 6 located on the route of the vehicle (or at least of the next road infrastructure element 6 to come), as well as the other static and/or dynamic data relating to the road infrastructure and/or road traffic and managed by the management system 8, are provided as input to the computer 4 via the management system 8.
- the route of the vehicle 2 over a predetermined distance is predefined (for example via user input) or predicted (for example via the management system 8 which transmits the information to the computer 4) within the computer 4.
- the computer 4 executes for example the application or the computer program for implementing the method.
- the sub-process 20 includes an initial step 22 during which the calculator 4 determines the distance D1 between the vehicle 2 and the next element of road infrastructure 6 located on the route of the vehicle 2.
- the sub-process 20 comprises a following step 23 during which the computer 4 detects that at least one other vehicle is driving in the same direction as the vehicle 2 and is located between the vehicle 2 and the next element of road infrastructure 6, on the route of the vehicle 2.
- This detection step 23 is for example carried out via data transmitted to the computer 4 by the driving assistance device ADAS 16 of the radar or LiDAR type.
- the relative speed of the other vehicle is for example estimated by the computer 4 as a function of the operating cycle 7 of the next road infrastructure element 6 and a model (for example pre-recorded or well based on prediction equations) of vehicle reactions when a road infrastructure element passes from its closed or blocking state to its open or passing state and vice versa (vehicle restart time).
- the sub-process 20 comprises a following step 24 during which the computer 4 determines the distance between the vehicle 2 and the vehicle immediately preceding the vehicle 2 on its route, then replaces the distance D1 determined during the initial step 22 by this distance.
- the sub-process 20 comprises a following step 26 during which the calculator 4 calculates, based on the distance D1 determined during the initial step 22 or the distance determined during step 24, an optimal speed profile of the vehicle 2 in a first calculation mode of the calculation method.
- the speed of the vehicle 2 at the time of reaching the next element of road infrastructure 6 and the duration for the vehicle 2 to reach this next element of road infrastructure 6 are left free (possibly taking into account of the relative speed of another vehicle located in front of vehicle 2, in the case where such a vehicle was detected during step 23 - in such a scenario, the calculation of the optimal speed profile is adapted to synchronize the speeds when reaching that vehicle traveling in front).
- an assumption is made consisting of assuming that the next road infrastructure element 6 will be in its first open or passing state at the time when the vehicle 2 reaches this road infrastructure element 6.
- the sub-process 20 comprises a following step 28 during which the calculator 4 calculates, based on the optimal speed profile calculated during step 26, the duration for the vehicle 2 to reach the next element of road infrastructure 6 or the next vehicle located in front of vehicle 2 (in the case where such a vehicle was detected during step 23).
- the sub-process 20 comprises a following step 30 during which the calculator 4 determines, based on the duration calculated during step 28 and the operating cycle 7 of the next road infrastructure element 6, the state of this road infrastructure element 6 at the time when the vehicle 2 reaches this road infrastructure element 6.
- the sub-process 20 comprises a following step 32 during which the calculator 4 compares the state of the next road infrastructure element 6 determined during step 30, to the first open or passing state of this infrastructure element road 6.
- the sub-process 20 comprises a following step 34 during which the calculator 4 takes into account the optimal speed profile of vehicle 2 calculated during step 26, to apply or recommend this optimal speed profile to vehicle 2. Sub-process 20 then ends.
- the sub-process 20 comprises a following step 36 during which the calculator 4 calculates, as a function of the distance D1 determined during the initial step 22 or the distance determined during step 24, an optimal speed profile of the vehicle 2 in a second calculation mode of the calculation method.
- the speed of vehicle 2 when reaching the next road infrastructure element 6 is set to a zero value and is provided as input to the calculation method.
- the duration for the vehicle 2 to reach the next element of road infrastructure 6 is left free (possibly taking into account the relative speed of another vehicle located in front of the vehicle 2, in the case where such a vehicle has been detected at during step 23 - in such a scenario, the calculation of the optimal speed profile is adapted to synchronize the speeds when reaching this vehicle traveling in front).
- an assumption is made consisting of assuming that the next road infrastructure element 6 will be in its second closed or blocking state at the time when the vehicle 2 reaches this road infrastructure element 6.
- the sub-process 20 comprises a following step 38 during which the calculator 4 calculates, based on the optimal speed profile calculated during step 36, the duration for the vehicle 2 to reach the next element of road infrastructure 6 or the next vehicle located in front of vehicle 2 (in the case where such a vehicle was detected during step 23).
- the sub-process 20 comprises a following step 40 during which the calculator 4 determines, based on the duration calculated during step 38 and the operating cycle 7 of the next road infrastructure element 6, the state of this road infrastructure element 6 at the time when the vehicle 2 reaches this road infrastructure element 6.
- the sub-process 20 includes a next step 42 during which the calculator 4 compares the state of the next element of road infrastructure 6 determined during step 40, in the second closed or blocking state of this road infrastructure element 6.
- the sub-process 20 comprises a following step 44 during which the calculator 4 takes into account the profile optimal speed profile of vehicle 2 calculated during step 36, to apply or recommend this optimal speed profile to vehicle 2. Sub-process 20 then ends.
- the sub-process 20 comprises a following step 46 during which the calculator 4 calculates, as a function of the distance D1 determined during the initial step 22 or the distance determined during step 24, an optimal speed profile of the vehicle 2 in a third calculation mode of the calculation method.
- the speed of vehicle 2 when reaching the next element of road infrastructure 6 is left free (possibly taking into account the relative speed of another vehicle located in front of vehicle 2, in the case where such a vehicle was detected during step 23 - in such a case, the calculation of the optimal speed profile is adapted to synchronize the speeds when reaching this vehicle traveling in front).
- the duration for the vehicle 2 to reach the next road infrastructure element 6 is fixed as being the duration of passage of this road infrastructure element 6 to the next first open or passing state reachable by the vehicle 2, and is provided as input of the calculation method.
- an assumption is made consisting of assuming that the next element of road infrastructure 6 will have just passed into its first open or passing state at the time when the vehicle 2 will reach this element of infrastructure road 6.
- Sub-process 20 comprises a following step 48 during which the calculator 4 takes into account the optimal speed profile of the vehicle 2 calculated during step 46, to apply or recommend this optimal speed profile to the vehicle 2.
- the sub-process 20 then ends.
- the sub-process 20 also comprises a step 50, implemented after step 46 when no step 26, 36, 46 of calculating an optimal speed profile of the vehicle 2 gives an acceptable solution for the vehicle 2, during which the computer 4 calculates, based on the distance D1 determined during the initial step 22 or the distance determined during step 24, an optimal speed profile of the vehicle 2 in a fourth mode calculation of the calculation method.
- acceptable solution for the vehicle we mean any mathematical solution compatible with the physical and regulatory constraints relating to vehicle 2, the road infrastructure or the road network (such as for example the maximum speeds authorized on the network).
- the speed of the vehicle 2 at the time of reaching the next element of road infrastructure 6 is fixed at a zero value, and the duration for the vehicle 2 to reach the next element of road infrastructure road infrastructure 6 is fixed as being the duration of passage of this element of road infrastructure 6 to the next second closed or blocking state.
- the speed of vehicle 2 at the time of reaching the next road infrastructure element 6 and the duration for vehicle 2 to reach the next road infrastructure element 6 are provided as input to the calculation method.
- an hypothesis is made consisting of assuming that the next element of road infrastructure 6 will have just passed into its second closed or blocking state at the time when the vehicle 2 will reach this element of infrastructure road 6.
- the sub-process 20 comprises a following step 52 during which the calculator 4 takes into account the optimal speed profile of the vehicle 2 calculated during step 50, to apply or recommend this optimal speed profile to the vehicle 2. Sub-process 20 then ends.
- the sub-process 20 further comprises a detection phase, by the computer 4, of at least one condition or at least one predetermined event (such a detection phase not being shown in Figure 2 but can occur at any time between step 23 and step 52). If at least one such predetermined condition or event is detected by the computer 4, the sub-process 20 loops back to the initial step 22 of determining the distance between the vehicle 2 and the next road infrastructure element 6 located on the route of the vehicle 2, taking into account the new current position of the vehicle 2.
- a predetermined event is for example a disturbance type event on the route of the vehicle .
- a predetermined condition is for example if there is a difference between the actual speed of the vehicle 2 and the prediction made by the computer 4, or if there is a difference between the actual state of the next infrastructure element road 6 and the prediction made by the computer 4.
- the method of controlling the speed of the vehicle 2 comprises a final step 54 during which the computer 4 transmits, to the powertrain of the vehicle 2, a speed command established according to the optimal speed profile of the vehicle taken into account during one of steps 34, 44, 48 or 52.
- the speed command is transmitted to this regulator by the computer 4, the speed regulator then calculating a set speed established according to this speed command.
- the speed of vehicle 2 is then regulated according to this set speed (which can vary depending on the calculated speed command).
- the vehicle 2 can also be, as a variant, an autonomous or semi-autonomous vehicle, in which case the speed command can be transmitted directly by the computer 4 to the powertrain of the vehicle 2.
- the method 20 for optimizing the energy consumption of the vehicle 2 according to the invention can be used to recommend to the driver the optimal speed profile of the vehicle 2 taken into account by the computer 4 (in this case, there is no longer a final step 54 ).
- This recommendation is for example carried out via a display of information on the display device 14, such information taking for example the form of a colored (dynamic) graphic recommendation zone, within which the driver is encouraged to position a needle materializing the speed of vehicle 2 (the position of the needle being controlled by the accelerator pedal).
- the vehicle speed control method 2 loops back to sub-process 20 for the next road infrastructure element located on the route of the vehicle 2 .
- the method of optimizing the energy consumption of a vehicle 2 according to the invention allows the vehicle 2 to calculate the best speed profile to follow to reach the next element of road infrastructure 6 by covering the distance from the current position of the vehicle 2 up to this element 6, and provides optimal temporal synchronization with the phase or state of this road infrastructure element 6.
- Such a method thus allows optimal minimization of the energy consumption of the vehicle, and offers gains on the energy consumption of the latter of the order of 10% to 20% depending on the driving situations.
- the method according to the invention is applicable to any type of vehicle (two-, three- or four-wheeled vehicles, commercial vehicles, buses, trucks, etc.).
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- Transportation (AREA)
- Mechanical Engineering (AREA)
- Human Computer Interaction (AREA)
- Devices For Checking Fares Or Tickets At Control Points (AREA)
- Navigation (AREA)
- Traffic Control Systems (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380045234.5A CN119451875A (zh) | 2022-07-08 | 2023-07-04 | 用于优化车辆的能量消耗的方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2207039 | 2022-07-08 | ||
| FR2207039A FR3137641A1 (fr) | 2022-07-08 | 2022-07-08 | Procede d’optimisation de la consommation energetique d’un vehicule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024008682A1 true WO2024008682A1 (fr) | 2024-01-11 |
Family
ID=83355491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/068315 Ceased WO2024008682A1 (fr) | 2022-07-08 | 2023-07-04 | Procede d'optimisation de la consommation energetique d'un vehicule |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN119451875A (fr) |
| FR (1) | FR3137641A1 (fr) |
| WO (1) | WO2024008682A1 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017089569A1 (fr) * | 2015-11-27 | 2017-06-01 | Bayerische Motoren Werke Aktiengesellschaft | Système de commande pourvu d'au moins une unité de commande électronique destinée à la commande d'un moteur à combustion interne d'un véhicule hybride |
| WO2020193295A1 (fr) * | 2019-03-25 | 2020-10-01 | Renault S.A.S | Procédé de sécurisation de franchissement d'un feu de circulation par un véhicule |
| US20200408299A1 (en) * | 2019-06-27 | 2020-12-31 | Hyundai Motor Company | Apparatus and method for controlling transmission of vehicle |
| DE102020202803A1 (de) * | 2020-03-05 | 2021-09-09 | Zf Friedrichshafen Ag | Modellbasierte prädiktive Regelung eines Fahrzeugs unter Berücksichtigung eines Ankunftszeit-Faktors |
-
2022
- 2022-07-08 FR FR2207039A patent/FR3137641A1/fr active Pending
-
2023
- 2023-07-04 WO PCT/EP2023/068315 patent/WO2024008682A1/fr not_active Ceased
- 2023-07-04 CN CN202380045234.5A patent/CN119451875A/zh active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017089569A1 (fr) * | 2015-11-27 | 2017-06-01 | Bayerische Motoren Werke Aktiengesellschaft | Système de commande pourvu d'au moins une unité de commande électronique destinée à la commande d'un moteur à combustion interne d'un véhicule hybride |
| WO2020193295A1 (fr) * | 2019-03-25 | 2020-10-01 | Renault S.A.S | Procédé de sécurisation de franchissement d'un feu de circulation par un véhicule |
| US20200408299A1 (en) * | 2019-06-27 | 2020-12-31 | Hyundai Motor Company | Apparatus and method for controlling transmission of vehicle |
| DE102020202803A1 (de) * | 2020-03-05 | 2021-09-09 | Zf Friedrichshafen Ag | Modellbasierte prädiktive Regelung eines Fahrzeugs unter Berücksichtigung eines Ankunftszeit-Faktors |
Non-Patent Citations (1)
| Title |
|---|
| "Green-Wave Traffic Theory Optimization and Analysis - World", JOURNAL OF ENGINEERING AND TECHNOLOGY, vol. 2, 2014, pages 14 - 19 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119451875A (zh) | 2025-02-14 |
| FR3137641A1 (fr) | 2024-01-12 |
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