A method for distributing control based on torque vectoring in a race track mode and a vehicle

Abstract

The application provides a control method for torque vectoring distribution in a race track mode, and belongs to the field of vehicle torque control. The method comprises the following steps: obtaining a current driving mode of a vehicle, and obtaining a current position of the vehicle when the current driving mode is a race track mode; comparing the current position with a race track scene position stored in a race track scene database; and when the current position is consistent with a certain race track scene position stored in the race track scene database, performing torque output according to a torque distribution strategy corresponding to the race track scene position. The application compares the current driving mode and position of the vehicle with a preset race track scene, and when the current position is consistent with a certain preset race track scene position, torque output is performed according to a torque distribution strategy corresponding to the race track scene position, so as to solve the problem that the vehicle can change torque distribution under different race track scenes, and the vehicle can directly call torque distribution schemes in the database without re-tuning in the race track.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle torque control, in particular to a control method for torque vectoring distribution in a race mode. BACKGROUND

[0002] The current vehicle torque vectoring distribution system will adjust the torque distribution strategy of the vehicle to different degrees according to different driving modes of the vehicle, but this strategy cannot meet the adjustment of the exclusive software system parameters of the vehicle on a specific race track, and it is difficult to achieve the best torque distribution strategy for the exclusive race track to improve the driving characteristics of the vehicle on the race track.

[0003] Currently, when the vehicle passes through different race tracks, the torque distribution of the vehicle needs to be adjusted again, which not only wastes a lot of time, but also makes the data unable to be universal, therefore, a method is needed to call the torque distribution of the race track in time according to the race track scene and reduce repeated adjustment. SUMMARY

[0004] An object of the present application is to provide a control method for torque vectoring distribution in a race mode, which can change the torque distribution of the vehicle in different race track scenes, so that the vehicle can directly call the torque distribution scheme in the database without re-adjusting on the race track.

[0005] In particular, the present application provides a control method for torque vectoring distribution in a race mode, characterized in that it comprises the following steps:

[0006] Obtaining the current driving mode of the vehicle, the driving mode including a race mode;

[0007] Obtaining the current position of the vehicle when the current driving mode is a race mode;

[0008] Comparing the current position with the race track scene positions stored in the race track scene database, the race track scene database storing data corresponding one-to-one between the race track scene positions and the torque distribution strategies;

[0009] When the current position is consistent with a race track scene position stored in the race track scene database, performing torque output according to the torque distribution strategy corresponding to the race track scene position.

[0010] The present application also discloses a control method for torque vectoring distribution in a race mode, characterized in that it comprises the following steps:

[0011] Obtaining the current driving mode of the vehicle, the driving mode including a race mode;

[0012] Obtaining the current race track scene of the vehicle when the current driving mode is a race mode;

[0013] comparing the current track scene with a plurality of track fusion scenes stored in a track scene database to determine which track fusion scene in the track scene database the current track scene belongs to, the track scene database storing data corresponding one-to-one between track fusion scenes and torque distribution strategies;

[0014] controlling the vehicle to perform torque output according to the determined torque distribution strategy corresponding to the track fusion scene when the vehicle is in the same section as the track fusion scene.

[0015] Further, the method further comprises the following steps:

[0016] determining whether the current track scene is consistent with a certain sub-scene in the corresponding track fusion scene when the vehicle is in a section different from the track fusion scene, each track fusion scene having a plurality of sub-scenes, at least one sub-scene having a special section different from the section in the track fusion scene, and each special section corresponding to a torque distribution sub-strategy;

[0017] performing torque output according to the torque distribution sub-strategy corresponding to the special section in the sub-scene when the current track scene is consistent with the sub-scene in the corresponding track fusion scene.

[0018] Further, the method further comprises the following steps:

[0019] extracting at least one target section in the current track scene different from the track fusion scene when the current track scene is not consistent with the sub-scene in the corresponding track fusion scene.

[0020] matching the at least one target section with special sections corresponding to a plurality of sub-scenes in the track fusion scene, the at least one target section being successfully matched with at least two special sections;

[0021] performing torque output according to the torque distribution sub-strategy corresponding to the successfully matched special section.

[0022] Further, when determining which track fusion scene in the track scene database the current track scene belongs to, the method further comprises the following steps:

[0023] obtaining road condition information of the current track scene;

[0024] comparing the road condition information with road condition information in a plurality of track fusion scenes stored in a track scene database, and determining that the current track scene is the same scene as a certain track fusion scene in the track scene database when the similarity between the road condition information and the road condition information in the plurality of track fusion scenes is higher than 80%.

[0025] Further, the control vehicle according to the determined torque distribution strategy corresponding to the track fusion scene executes the torque output, and the method further comprises the following steps:

[0026] Obtaining the weather condition of the current track scene;

[0027] Comparing the weather condition with a plurality of weather conditions stored in the track scene database to determine which weather condition the weather condition belongs to in the track scene database;

[0028] When the weather condition is consistent with a certain weather condition stored in the track scene database, the torque output is executed according to the torque distribution strategy corresponding to the weather condition.

[0029] Further, the weather condition includes sunny, rainy and snowy.

[0030] The application further discloses a vehicle comprising the control method.

[0031] The application compares the current position with the track scene position stored in the track scene database, and when the current position is consistent with a certain track scene position stored in the track scene database, the torque output is executed according to the torque distribution strategy corresponding to the track scene position, so as to solve the problem that the torque distribution of the vehicle can be changed under different track scenes, and the vehicle can directly call the torque distribution scheme in the database without re-tuning on the track.

[0032] Further, the application can also compare the current track scene with a plurality of track fusion scenes stored in the track scene database to determine which track fusion scene the current track scene belongs to in the track scene database, and when the vehicle is in the same section as the track fusion scene, the vehicle is controlled to execute the torque output according to the determined torque distribution strategy corresponding to the track fusion scene, so as to solve the problem that the torque distribution of the vehicle can be changed under different track scenes, and the vehicle can directly call the torque distribution scheme in the database without re-tuning on the track.

[0033] The above and other objects, advantages and features of the application will become more apparent from the following detailed description of specific embodiments thereof, when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0034] Some specific embodiments of the present application will be described in detail with reference to the accompanying drawings, which are provided by way of illustration only. The same reference numbers in different drawings identify the same or similar components or parts. It should be understood that these drawings are not necessarily drawn to scale. In the drawings:

[0035] Figure 1 is a flow chart according to an embodiment of the present application;

[0036] Figure 2 is a flow chart according to another embodiment of the present application. DETAILED DESCRIPTION

[0037] Figure 1 is a flow chart according to an embodiment of the present application. In one embodiment, a control method of torque vectoring in a race track mode is shown in Figure 1

[0038] obtaining a current driving mode of the vehicle, wherein the driving mode includes an economy mode, a comfort mode, a sport mode and a race track mode;

[0039] obtaining current position information of the vehicle through a vehicle positioning system when the vehicle is in the race track mode;

[0040] comparing the current position with a race track scene position stored in a race track scene database to determine whether the current position is consistent with the race track scene position stored in the race track scene database;

[0041] performing torque output according to a torque distribution strategy corresponding to the race track scene position when the current position is consistent with the race track scene position stored in the race track scene database.

[0042] In the embodiment, the current driving mode of the vehicle and the current position of the vehicle are obtained, the current position is compared with the race track scene position stored in the race track scene database, and the torque output is performed according to the torque distribution strategy corresponding to the race track scene position when the current position is consistent with the race track scene position stored in the race track scene database, so as to solve the problem that the vehicle can change the torque distribution in different race track scenes, and the vehicle can directly call the torque distribution scheme in the database without re-tuning in the race track.

[0043] In the embodiment, the current driving mode of the vehicle and the current position of the vehicle are obtained, the current position is compared with the race track scene position stored in the race track scene database, and the torque output is performed according to the torque distribution strategy corresponding to the race track scene position when the current position is consistent with the race track scene position stored in the race track scene database, so as to solve the problem that the vehicle can change the torque distribution in different race track scenes, and the vehicle can directly call the torque distribution scheme in the database without re-tuning in the race track.

[0044] ​Further, when the current location does not match all the track scenes stored in the track scene database, torque output is performed according to a preset torque distribution strategy in the track mode, so that the vehicle can adapt to different torque distribution strategies in different track scenes, improve the driving experience of the driver, and reduce the process of re-tuning the vehicle in different track scenes.

[0045] Figure 2 is a flow chart according to another embodiment of the application. In another embodiment, as shown in Figure 2 A control method for torque vector distribution in a track mode, comprising the following steps:

[0046] Obtaining the current driving mode of the vehicle, wherein the driving mode includes an economic mode, a comfort mode, a sport mode and a track mode;

[0047] When the vehicle is in the track mode, obtaining the current track scene of the vehicle;

[0048] Comparing the current track scene with a plurality of track fusion scenes stored in a track scene database to determine which track fusion scene the current track scene belongs to in the track scene database, wherein the track scene database stores data corresponding to the track fusion scene and the torque distribution strategy one-to-one;

[0049] When the vehicle is in the same section as the track fusion scene, controlling the vehicle to perform torque output according to the torque distribution strategy corresponding to the determined track fusion scene.

[0050] In this embodiment, by obtaining the track scene of the vehicle, comparing the current track scene with a plurality of track fusion scenes stored in a track scene database to determine which track fusion scene the current track scene belongs to in the track scene database, and when the vehicle is in the same section as the track fusion scene, controlling the vehicle to perform torque output according to the torque distribution strategy corresponding to the determined track fusion scene, the torque distribution of the vehicle can be changed in different track scenes, so that the vehicle can directly call the torque distribution scheme in the database without re-tuning in the track.

[0051] In another embodiment, as shown in Figure 2As shown, the track scene database contains multiple track fusion scenarios, each of which includes several sub-scenarios. At least one sub-scenario has a special road segment that differs from the road segments in the track fusion scenario. Each special road segment corresponds to a torque allocation sub-strategy. When the vehicle is in a track scene with a road segment different from the track fusion scenario, it is determined whether the current track scene matches a sub-scenario within the corresponding track fusion scenario. If the current track scene matches a sub-scenario within the corresponding track fusion scenario, torque output is executed according to the torque allocation sub-strategy corresponding to the special road segment in that sub-scenario.

[0052] Furthermore, if the current track scene is inconsistent with a certain sub-scene in the corresponding track fusion scene, then at least one target road segment that is different from the track fusion scene in the current track scene is extracted, and the target road segment is matched with the special road segments corresponding to multiple sub-scenes in the track fusion scene. It is determined whether the target road segment matches the special road segment. If they match, the torque output is executed according to the torque allocation sub-strategy corresponding to the successfully matched special road segment.

[0053] In the above embodiments, in order to ensure the accuracy of matching between the vehicle's current driving scenario and the track fusion scenario in the track scenario database, it is necessary to further obtain the road condition information of the vehicle's current track scenario, compare the current road condition information with the road condition information in multiple track fusion scenarios stored in the track scenario database, and when the similarity between the current road condition information and the road condition information in multiple track fusion scenarios is higher than 80%, it is determined that the current track scenario and a certain track fusion scenario in the track scenario database are the same scenario.

[0054] In a further embodiment, such as Figure 2 As shown, the torque distribution strategy in the track scenario is also related to the weather. After obtaining the current track scenario of the vehicle, the weather conditions of the current track scenario are further obtained. The current weather conditions are compared with multiple weather conditions stored in the track scenario database to determine which type of weather condition in the track scenario database the current weather condition belongs to, such as sunny, rainy, and snowy weather. When the current weather condition is consistent with a certain weather condition stored in the track scenario database, the torque output is executed according to the torque distribution strategy corresponding to that weather condition.

[0055] In this embodiment, by obtaining the weather conditions of the track scene where the vehicle is located, the torque distribution strategy can be further planned, making the torque distribution strategy in this driving scenario more optimized, and making the vehicle's torque output more in line with the real-time scenario.

[0056] The present invention also discloses a vehicle including the control method described above.

[0057] At this point, those skilled in the art will appreciate that although specific exemplary embodiments of the application have been described herein, the present application also encompasses many other variations or modifications in accordance with the principles of the application as set forth above. Accordingly, the scope of the present application should be understood to include all such variations and modifications.

Claims

1. A control method for torque vector distribution in track mode, characterized in that, Includes the following steps: Obtain the vehicle's current driving mode, including track mode; When the current driving mode is track mode, obtain the current track scene of the vehicle; The current track scene is compared with multiple track fusion scenes stored in the track scene database to determine which track fusion scene in the track scene database the current track scene belongs to. The track scene database stores data that corresponds one-to-one between track fusion scenes and torque distribution strategies. When the vehicle is on a road segment that is the same as the track fusion scenario, the vehicle is controlled to execute torque output according to the torque distribution strategy corresponding to the determined track fusion scenario. When the vehicle is on a road segment that is different from the track fusion scenario, it is determined whether the current track scenario is consistent with a certain sub-scenario in the corresponding track fusion scenario. Each track fusion scenario has multiple sub-scenarios, and at least one sub-scenario has a special road segment that is different from the road segment in the track fusion scenario. Each special road segment corresponds to a torque distribution sub-strategy. When the current track scene is inconsistent with a certain sub-scene in the corresponding track fusion scene, extract at least one target road segment in the current track scene that is different from the track fusion scene; The at least one target road segment is matched with special road segments corresponding to multiple sub-scenes in the track fusion scene, and the at least one target road segment can be successfully matched with at least two special road segments; Torque output is executed according to the torque distribution sub-strategy corresponding to the successfully matched special road segment.

2. The control method according to claim 1, characterized in that, It also includes the following steps: When the current track scene is consistent with a certain sub-scene in the corresponding track fusion scene, the torque output is executed according to the torque distribution sub-strategy corresponding to the special road section in the sub-scene.

3. The control method according to claim 1, characterized in that, When determining which track fusion scene in the track scene database the current track scene belongs to, the following steps are also included: Obtain road condition information for the current track scene; The road condition information is compared with the road condition information in multiple track fusion scenarios stored in the track scenario database. When the similarity between the road condition information and the road condition information in multiple track fusion scenarios is higher than 80%, it is determined that the current track scenario and a certain track fusion scenario in the track scenario database are the same scenario.

4. The control method according to any one of claims 1-3, characterized in that, When the controlled vehicle executes torque output according to the torque distribution strategy corresponding to the determined track fusion scenario, the following steps are also included: Get the weather conditions for the current track scene; The weather conditions are compared with multiple weather conditions stored in the track scene database to determine which type of weather condition in the track scene database the weather conditions belong to. When the weather conditions match a certain weather condition stored in the track scenario database, torque output is executed according to the torque distribution strategy corresponding to the weather conditions.

5. The control method according to claim 4, characterized in that, The weather conditions mentioned include sunny, rainy, and snowy days.

6. A vehicle comprising the control method as described in any one of claims 1-5.

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