Drift control method, system and device based on electronic parking switch and medium
By using the drift control method of electronic parking switch, the electronic parking recognition result is used to determine and drive the rear wheel brake module to clamp, which solves the problem that traditional EPB cannot quickly lock the rear wheels, and realizes a safe and highly maneuverable vehicle drifting experience.
Patent Information
- Application Number
- CN202511769547.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-01-23
AI Technical Summary
Traditional electronic parking brake (EPB) functions cannot quickly lock the rear wheels, making it impossible to drift the vehicle using electronic parking brake, which affects the driving safety and experience of non-professional track-level drivers.
By using a drift control method based on an electronic parking switch, the system responds to drift confirmation commands, obtains identification results, determines whether drift control conditions are met, and drives the rear wheel braking module to perform a clamping operation, stopping the anti-lock braking strategy and achieving vehicle drift.
It enables the explicit execution and disengagement of functions through policy control without adding sensors, controllers, or actuators, ensuring driving safety for non-professional track-level drivers and providing a more maneuverable driving experience.
Smart Images
Figure CN121375705A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle technology, and in particular to a drift control method, system, device and medium based on an electronic parking switch. Background Technology
[0002] Drifting is a driving technique that requires precise control of vehicle attitude and power distribution. Traditionally, the core principle of drifting using a mechanical handbrake is to lock the rear wheels by pulling the handbrake, causing them to lose traction, while simultaneously controlling the steering and throttle to achieve a sideslip. This operation requires the rear wheel's sliding friction to be greater than the front wheel's; that is, the rotational torque generated by the lateral force of the rear wheel exceeds that of the front wheel, causing the rear of the car to slide outwards. With the current trend towards intelligent vehicles, Electronic Parking Brake (EPB) is widely used. However, due to the relatively long response time of the EPB calipers in hydraulic braking systems (approximately 1 second), it is impossible to achieve drifting by locking the rear wheels using EPB. Summary of the Invention
[0003] The main objective of this application is to propose a drift control method, system, device, and medium based on an electronic parking switch to ensure the driving safety of non-professional track-level drivers and improve the user's driving experience.
[0004] To achieve the above objectives, one aspect of this application proposes a drift control method based on an electronic parking switch, the method comprising: In response to a drift confirmation command, the electronic parking recognition result is obtained based on the drift confirmation command; Based on the electronic parking recognition result, determine whether the conditions for executing drift control are met; When the conditions for performing drift control are met, the rear wheel braking module is driven to perform a clamping operation according to the set service braking strategy, and the rear wheel braking module is controlled to stop running the set anti-lock braking strategy to achieve vehicle drift operation.
[0005] In some embodiments, the response to the drift confirmation command includes: In response to the driving selection command, the current vehicle driving module is determined to be in track mode, and the current vehicle position information is obtained. Based on the location information, identify whether the vehicle is currently on a racetrack. When it is confirmed that the vehicle is currently on the racing track, a drift response control is rendered and displayed on the vehicle terminal of the vehicle. The drift confirmation command is generated based on the response of the drift response control.
[0006] In some embodiments, determining whether the conditions for executing drift control are met based on the electronic parking recognition result includes: Obtain the current brake pedal displacement and current deceleration of the vehicle, and identify the operating status of the vehicle's braking system based on the current brake pedal displacement and current deceleration. When it is confirmed that the braking system of the vehicle is operating normally, the current vehicle speed is obtained, and the electronic parking switch is pulled up to obtain an electronic parking request. Based on the electronic parking request and the current vehicle speed, identify whether the current parking operation is a drift control request operation.
[0007] In some embodiments, driving the rear wheel braking module to perform a clamping operation according to the set driving braking strategy includes: When it is determined that the conditions for performing drift control are met, a drift control request is generated, and in response to the drift control request, the set driving braking strategy is obtained. Based on the set vehicle braking strategy, the current response speed and current clamping force corresponding to the current vehicle are determined, and the rear wheel braking module is driven to perform a clamping operation based on the current response speed and the current clamping force.
[0008] In some embodiments, identifying whether the current parking operation is a drift control request operation includes: When the current vehicle speed is less than the set first vehicle speed threshold, the current parking operation is identified as a normal parking operation. Based on the normal parking operation, according to the set parking braking strategy, the rear wheel braking module is driven to perform a clamping operation to park the vehicle.
[0009] In some embodiments, identifying whether the current parking operation is a drift control request operation includes: When the current vehicle speed is greater than the set second vehicle speed threshold, the current parking operation is identified as a dangerous operation in which the rear axle of the vehicle may lock up. Based on the aforementioned dangerous operation, and in accordance with the electronic parking request, the braking modules of each wheel are driven to perform a clamping operation to prevent the wheels from locking up. Based on the duration of the electronic parking request, it is determined that the pull-up operation of the electronic parking switch is continuously triggered, and when it is determined that the current vehicle speed is less than the set second vehicle speed threshold, the braking modules of each wheel continue to be driven to perform clamping operations until the lowering operation of the electronic parking switch is responded to, so as to determine the drift control conditions again.
[0010] In some embodiments, identifying whether the current parking operation is a drift control request operation includes: When the current vehicle speed is greater than the set first vehicle speed threshold and less than the set second vehicle speed threshold, the current parking operation is identified as the above-mentioned drift control request operation, and it is determined that the current vehicle meets the conditions for executing drift control.
[0011] To achieve the above objectives, another aspect of this application proposes a drift control system based on an electronic parking switch, the system comprising: The instruction response module is used to respond to a drift confirmation instruction and obtain the electronic parking recognition result based on the drift confirmation instruction; The identification module is used to determine whether the conditions for executing drift control are met based on the electronic parking identification result; The drift execution module is used to drive the rear wheel brake module to perform a clamping operation according to the set driving braking strategy when it is determined that the drift control conditions are met, and to control the rear wheel brake module to stop running the set anti-lock braking strategy.
[0012] To achieve the above objectives, another aspect of the embodiments of this application proposes a vehicle control device, including a memory, a processor, and a program stored in the memory and executable on the processor. When the program is executed by the processor, it implements the above-described drift control method based on an electronic parking switch.
[0013] To achieve the above objectives, another aspect of the embodiments of this application proposes a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described drift control method based on an electronic parking switch.
[0014] The embodiments of this application include at least the following beneficial effects: This application provides a drift control method, system, device, and medium based on an electronic parking switch. This solution responds to the driver's drift confirmation command and determines whether the conditions for executing drift control are met based on the electronic parking recognition result, so as to achieve drifting through the electronic parking switch without adding sensors, controllers, or actuators. When it is determined that the conditions for executing drift control are met, the rear wheel braking module is driven to perform a clamping operation according to the set driving braking strategy. At the same time, the braking module does not perform the rear wheel anti-lock control strategy, which can achieve wheel lock-up and thus complete the drift. Compared with traditional handbrake drifting, the strategy control clearly defines the function execution and exit, ensuring the driving safety of non-professional track-level drivers. Compared with the existing technology that can achieve handbrake drifting through a hydraulic braking system, it provides users with a more maneuverable driving experience. Attached Figure Description
[0015] Figure 1 This is a flowchart of the drift control method based on an electronic parking switch provided in the embodiments of this application; Figure 2This is a schematic diagram of the framework of a drift control system based on an electronic parking switch provided in an embodiment of this application; Figure 3 This is a schematic diagram of the hardware structure framework of the vehicle control device provided in the embodiments of this application. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit it. In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this application; they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this application as detailed in the appended claims.
[0017] It is understood that the terms "first," "second," etc., used in this application may be used to describe various concepts herein, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of embodiments of this application, Ethernet signaling information may also be referred to as interface signaling information, and similarly, interface signaling information may also be referred to as Ethernet signaling information. Depending on the context, the words "if" or "when" as used herein may be interpreted as "when," "in response to a determination," or "in the event of a determination."
[0018] As used in this application, the terms "at least one", "multiple", "each", "any", etc., "at least one" includes one, two or more, "multiple" includes two or more, "each" refers to each of the corresponding multiples, and "any" refers to any one of the multiples.
[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.
[0020] Before providing a detailed description of the embodiments of this application, some of the nouns and terms involved in the embodiments of this application will be explained first. The nouns and terms involved in the embodiments of this application are subject to the following interpretations.
[0021] The vehicle's electronic control function (Controller Deceleration Parking) uses the EPB electronic parking brake to achieve continuous braking deceleration until the vehicle comes to a stop or the button is released.
[0022] In some embodiments of one aspect of the present invention Figure 1 This is an optional flowchart of the drift control method based on an electronic parking switch provided in the embodiments of this application. Figure 1 The method may include, but is not limited to, steps S100 to S300.
[0023] Step S100: In response to the drift confirmation command, obtain the electronic parking recognition result according to the drift confirmation command.
[0024] Step S200: Based on the electronic parking recognition result, determine whether the conditions for executing drift control are met.
[0025] In step S300, when it is determined that the conditions for performing drift control are met, the rear wheel brake module is driven to perform a clamping operation according to the set service braking strategy, and the rear wheel brake module is controlled to stop running the set anti-lock braking strategy to achieve vehicle drift operation.
[0026] Steps S100 to S300 of this application embodiment, in response to the driver's drift confirmation command, determine whether the conditions for executing drift control are met based on the electronic parking brake recognition result, so as to achieve drifting through the electronic parking brake switch without adding sensors, controllers, or actuators; when it is determined that the conditions for executing drift control are met, the rear wheel brake module is driven to perform a clamping operation according to the set service braking strategy. At the same time, the brake module does not perform the rear wheel anti-lock control strategy, which can achieve wheel lock-up and thus complete the drift. Compared with traditional handbrake drifting, the strategy control clearly defines the function execution and exit, ensuring the driving safety of non-professional track level drivers. Compared with the existing technology that can achieve handbrake drifting through the hydraulic braking system, it gives users a more maneuverable driving experience.
[0027] In some embodiments of S100, the user triggers a control on the vehicle terminal through the vehicle's on-board terminal, responds to the control, and receives a drift confirmation command.
[0028] By using the drift confirmation command, the vehicle performs a self-check to obtain the current brake pedal displacement, current deceleration, and response to the electronic parking brake switch being pulled up, in order to identify and judge the electronic parking brake recognition result.
[0029] In one embodiment, the current location information of the vehicle is obtained, and the location information is used to determine that the vehicle is currently in a racing track. A drift response control is rendered and displayed on the vehicle's onboard terminal. The user triggers the drift response control to generate a drift confirmation command.
[0030] In some embodiments of S200, after the user triggers the drift response control, when the driver pulls up the EPB switch while the vehicle is in motion, the EPB control module identifies whether drift control can be performed based on the electronic parking brake recognition result. If the conditions for performing drift control are met, step S300 is executed; otherwise, the operation is performed according to the specific conditions.
[0031] In some embodiments of S300, when it is determined by S200 that the current vehicle can respond to drift control, the rear wheel braking module is controlled to perform a clamping operation according to the response speed and clamping force in the set driving braking strategy. At the same time, the rear wheel braking module is controlled not to perform the rear wheel anti-lock control strategy. That is, the set anti-lock control strategy can achieve wheel lock-up and thus complete the drift.
[0032] In some embodiments of this invention, in S100, the process of obtaining the drift confirmation command specifically includes the following steps: S110, in response to the driving selection command, determines that the current vehicle driving module is in track mode and obtains the current vehicle position information.
[0033] S120 identifies whether the vehicle is currently on a racetrack based on location information.
[0034] S130: When it is confirmed that the current vehicle is on the racing track, the drift response control is rendered and displayed on the vehicle terminal of the current vehicle. The drift confirmation command is generated based on the response of the drift response control.
[0035] In this embodiment, the driver triggers the driving selection control through the vehicle terminal to generate a driving selection command, responds to the driving selection command, and determines that the driver's current selected vehicle driving mode is track mode based on the driving selection command.
[0036] Once the vehicle enters track mode, it uses the vehicle's map positioning function to obtain its current location information and then identifies whether the current location is a racing track.
[0037] If it is confirmed that the vehicle is currently on a racetrack, the vehicle's onboard terminal will display a drift response control, which the driver can use to select whether to enter drift mode.
[0038] When the driver triggers the drift response control through the vehicle terminal, the vehicle will respond to the drift response control, generate a drift confirmation command, and the vehicle will enter drift mode.
[0039] In some embodiments of this invention, the process of determining the drift control conditions in S200 specifically includes the following steps: S210: Obtain the current brake pedal displacement and current deceleration of the vehicle, and identify the operating status of the vehicle's braking system based on the current brake pedal displacement and current deceleration.
[0040] S220: When it is confirmed that the braking system of the vehicle is operating normally, the current vehicle speed is obtained and the electronic parking switch is pulled up to obtain an electronic parking request.
[0041] S230 identifies whether the current parking operation is a drift control request operation based on the electronic parking request and the current vehicle speed.
[0042] In this embodiment, after the driver selects the drift mode, the current brake pedal displacement and current deceleration of the vehicle during the driving process are obtained.
[0043] By analyzing the current brake pedal displacement and current deceleration, it can be determined whether the vehicle is experiencing a deceleration that does not meet the driver's expectations. If so, it may indicate a malfunction in the vehicle's braking system, causing the vehicle to enter an abnormal state and fail to enter drift control.
[0044] If it does not exist, it is assumed that the braking system of the vehicle is operating normally. At this time, in response to the driver's triggering of the electronic parking switch, an electronic parking request is obtained, and the current vehicle speed is obtained to determine the threshold speed.
[0045] When the driver pulls the EPB switch, an electronic parking request is received. The current vehicle speed is compared with the set first speed threshold and the set second speed threshold. Based on the comparison results and the electronic parking request, it is determined whether the parking operation triggered by the current electronic parking switch is a drift control request operation.
[0046] Specifically, the electronic parking brake identification results include: the identification results of the braking system's operating status and the identification results of the current parking operation. The conditions for executing drift control are: the operating status is normal operation and the current parking operation is determined to be a drift control request operation. Therefore, if the operating status is abnormal, drift control will not be initiated; if the operating status is normal operation, but the current parking operation is not a drift control request operation, drift control will not be initiated.
[0047] In this application, the first vehicle speed threshold can be 5 km / h and the second vehicle speed threshold can be 100 km / h. The first and second vehicle speed thresholds can be obtained by calibration through a test calibration system, or they can be other values. In this application, no restrictions are placed on the values of the first and second vehicle speed thresholds.
[0048] In some embodiments of this invention, in S230, the identification process of the current parking operation specifically includes the following steps: S231, when the current vehicle speed is less than the set first vehicle speed threshold, the current parking operation is identified as a normal parking operation.
[0049] S232, based on normal parking operation, according to the set parking braking strategy, drives the rear wheel brake module to perform clamping operation so that the current vehicle is parked.
[0050] In this embodiment, when the driver pulls up the electronic parking switch and the current vehicle speed is less than the set first vehicle speed threshold, the driver is identified as having a normal parking need. The parking operation triggered by the electronic parking switch is a normal parking operation, not a drift control request operation, and drift control is not initiated.
[0051] Based on the normal parking operation, a normal parking request is generated. According to the normal parking request, the set parking braking strategy is obtained. Through the set parking braking strategy, the current response speed and the current clamping force are determined. The rear wheel braking module clamps according to the current response speed and performs the clamping operation with the current clamping force to park the vehicle.
[0052] Specifically, when the driver pulls the electronic parking switch, the first vehicle speed threshold is 5 km / h. If the current vehicle speed is below 5 km / h, the driver is identified as having a normal parking need. The controller then commands the rear wheel actuator motor to clamp the rear wheels according to the response speed and clamping force of the parking braking strategy, thereby parking the vehicle.
[0053] In some embodiments of this invention, in S230, the identification process of the current parking operation specifically includes the following steps: S233, when the current vehicle speed is greater than the set second vehicle speed threshold, the current parking operation is identified as a dangerous operation in which the rear axle of the vehicle is locked.
[0054] S234, based on dangerous operation, according to the electronic parking request, drives the braking modules of each wheel to perform clamping operation to prevent the wheels from locking up.
[0055] S235, based on the request duration of the electronic parking request, determines that the lifting operation of the electronic parking switch is continuously triggered, and determines that the current vehicle speed is less than the set second vehicle speed threshold, continues to drive the braking modules of each wheel to perform clamping operations until responding to the lowering operation of the electronic parking switch, so as to determine the drift control conditions again.
[0056] In this embodiment, when the driver pulls up the electronic parking switch and the current vehicle speed is greater than the set second vehicle speed threshold, it is identified that there is a risk of the rear axle locking up, which is a dangerous operation. The parking operation that triggers the electronic parking switch is a dangerous operation, not a drift control request operation, and drift control is not initiated.
[0057] Based on this dangerous operation, a CDP control request is generated, and the CDP function is executed according to the CDP control request.
[0058] The CDP function controls the four wheels of each wheel braking module to perform clamping operations without locking the wheels.
[0059] If the duration of the electronic parking brake request determines that the driver is continuously triggering the pull-up operation of the electronic parking brake switch, and it is determined that the current vehicle speed has dropped below the set second vehicle speed threshold, then the CDP control request will continue to be executed to prevent the wheels from locking up, until the driver triggers the release operation of the electronic parking brake switch. In response to the release operation, the process returns to S210 to perform the execution condition judgment again.
[0060] Specifically, when the driver pulls the electronic parking brake switch, the second vehicle speed threshold is 100km / h. If the current vehicle speed is greater than 100km / h, it is identified that there is a risk of the rear axle locking up, which is considered a dangerous operation. A CDP control request is generated. According to the CDP control request, the CDP function is executed (the CDP function is that after the EPB switch is pulled, the brake control unit controls the four wheels to clamp together without locking up). If the driver continues to pull the electronic parking brake switch and the vehicle speed drops below the second vehicle speed threshold, the CDP control request continues until the driver releases the EPB switch, and the execution condition is judged again.
[0061] In some embodiments of this invention, in S230, the identification process of the current parking operation specifically includes the following steps: S236, when the current vehicle speed is greater than the set first vehicle speed threshold and less than the set second vehicle speed threshold, the current parking operation is identified as the above-mentioned drift control request operation, and the current vehicle meets the conditions for executing drift control.
[0062] In this embodiment, if the current vehicle speed is within the range between the set first vehicle speed threshold and the set second vehicle speed threshold, that is, greater than the set first vehicle speed threshold and less than the set second vehicle speed threshold, then the driver is identified as having a drifting demand, and the parking operation of the electronic parking switch is triggered as a drift control request operation, thus entering drift control and satisfying the conditions for executing drift control.
[0063] In other words, drift control is executed when the vehicle speed is between the two threshold speeds mentioned above.
[0064] In some embodiments of this invention, in S300, the execution process of the provided service braking strategy and the provided anti-lock braking control strategy specifically includes the following steps: S310: When it is determined that the conditions for executing drift control are met, a drift control request is generated, and in response to the drift control request, the set service braking strategy is obtained.
[0065] S320 determines the current response speed and current clamping force corresponding to the current vehicle based on the set driving braking strategy, and drives the rear wheel braking module to perform clamping operation based on the current response speed and current clamping force.
[0066] In this embodiment, when it is determined through S200 that the current vehicle can respond to drift control, the current vehicle can respond to drift control, generate a drift control request, respond to the drift control request, and obtain the set driving braking strategy.
[0067] With the development of electromechanical braking systems, the response speed of motor clamping has improved, and the response time can reach ≤150ms. This provides a technical basis for drivers to quickly turn the steering wheel and pull the electronic parking switch to achieve a drift similar to that of the traditional handbrake.
[0068] Therefore, by setting the driving braking strategy, the current response speed and current clamping force are determined. The rear wheel braking module clamps according to the current response speed and performs the clamping operation with the current clamping force. At the same time, the controller does not perform the rear wheel anti-lock control strategy, thereby achieving wheel lock-up and completing the drift.
[0069] Specifically, the controller commands the rear wheel actuator motor to clamp the rear wheel according to the response speed and clamping force of the service braking strategy. At the same time, the controller does not implement the rear wheel anti-lock control strategy, which can achieve wheel lock-up and thus complete drifting.
[0070] Reference Figure 2 Another embodiment of this application also provides a drift control system based on an electronic parking switch, including: The command response module is used to respond to drift confirmation commands and obtain electronic parking recognition results based on the drift confirmation commands.
[0071] The identification module is used to determine whether the conditions for executing drift control are met based on the electronic parking recognition results.
[0072] The drift execution module is used to drive the rear wheel brake module to perform a clamping operation according to the set service braking strategy when it is determined that the conditions for executing drift control are met, and to control the rear wheel brake module to stop running the set anti-lock braking strategy.
[0073] Another embodiment of this application provides a vehicle control device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the aforementioned drift control method based on an electronic parking switch. This vehicle control device can be any smart terminal, including a tablet computer, an in-vehicle computer, or similar device.
[0074] It is understood that the content of the above method embodiments is applicable to this device embodiment. The specific functions implemented by this device embodiment are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.
[0075] Please see Figure 3 , Figure 3 The hardware structure of a vehicle control device according to another embodiment is illustrated. The vehicle control device includes: The processor can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to achieve the technical solutions provided in the embodiments of this application. The memory can be implemented in the form of read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM). The memory can store the operating system and other applications. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory and called and executed by the processor to execute the drift control method based on the electronic parking switch in the embodiments of this application. Input / output interfaces are used to implement information input and output; The communication interface is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.). A bus is used to transfer information between various components of a device, such as processors, memory, input / output interfaces, and communication interfaces. The processor, memory, input / output interfaces, and communication interfaces communicate with each other within the device via a bus.
[0076] This invention also provides a vehicle including the drift control method based on an electronic parking switch described in the above embodiments.
[0077] The vehicle can be a private car, such as a sedan, SUV, MPV, or pickup truck. It can also be a commercial vehicle, such as a van, bus, small truck, or large semi-trailer. The vehicle must have an electric motor capable of outputting power or acting as a generator to store mechanical energy. When the vehicle is a new energy vehicle, it can be a hybrid or a pure electric vehicle.
[0078] Since the vehicle applies all the technical solutions of the above-described vehicle control device, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.
[0079] Another embodiment of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described drift control method based on an electronic parking switch.
[0080] It is understood that the content of the above method embodiments is applicable to this storage medium embodiment. The specific functions implemented in this storage medium embodiment are the same as those in the above method embodiments, and the beneficial effects achieved are also the same as those achieved in the above method embodiments.
[0081] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
[0082] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.
[0083] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.
[0084] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.
[0085] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.
[0086] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0087] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.
[0088] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
[0089] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.
[0090] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.
Claims
1. A drift control method based on an electronic parking switch, characterized in that, The method includes: In response to a drift confirmation command, the electronic parking recognition result is obtained based on the drift confirmation command; Based on the electronic parking recognition result, determine whether the conditions for executing drift control are met; When the conditions for performing drift control are met, the rear wheel braking module is driven to perform a clamping operation according to the set service braking strategy, and the rear wheel braking module is controlled to stop running the set anti-lock braking strategy to achieve vehicle drift operation.
2. The drift control method based on an electronic parking switch according to claim 1, characterized in that, The response to the drift confirmation command includes: In response to the driving selection command, the current vehicle driving module is determined to be in track mode, and the current vehicle position information is obtained. Based on the location information, identify whether the vehicle is currently on a racetrack. When it is confirmed that the vehicle is currently on the racing track, a drift response control is rendered and displayed on the vehicle terminal of the vehicle. The drift confirmation command is generated based on the response of the drift response control.
3. The drift control method based on an electronic parking switch according to claim 1, characterized in that, The step of determining whether the conditions for executing drift control are met based on the electronic parking recognition result includes: Obtain the current brake pedal displacement and current deceleration of the vehicle, and identify the operating status of the vehicle's braking system based on the current brake pedal displacement and current deceleration. When it is confirmed that the braking system of the vehicle is operating normally, the current vehicle speed is obtained, and the electronic parking switch is pulled up to obtain an electronic parking request. Based on the electronic parking request and the current vehicle speed, identify whether the current parking operation is a drift control request operation.
4. The drift control method based on an electronic parking switch according to claim 1, characterized in that, The step of driving the rear wheel braking module to perform a clamping operation according to the set vehicle braking strategy includes: When it is determined that the conditions for performing drift control are met, a drift control request is generated, and in response to the drift control request, the set driving braking strategy is obtained. Based on the set vehicle braking strategy, the current response speed and current clamping force corresponding to the current vehicle are determined, and the rear wheel braking module is driven to perform a clamping operation based on the current response speed and the current clamping force.
5. The drift control method based on an electronic parking switch according to claim 3, characterized in that, The step of identifying whether the current parking operation is a drift control request operation includes: When the current vehicle speed is less than the set first vehicle speed threshold, the current parking operation is identified as a normal parking operation. Based on the normal parking operation, according to the set parking braking strategy, the rear wheel braking module is driven to perform a clamping operation to park the vehicle.
6. The drift control method based on an electronic parking switch according to claim 3, characterized in that, The step of identifying whether the current parking operation is a drift control request operation includes: When the current vehicle speed is greater than the set second vehicle speed threshold, the current parking operation is identified as a dangerous operation in which the rear axle of the vehicle may lock up. Based on the aforementioned dangerous operation, and in accordance with the electronic parking request, the braking modules of each wheel are driven to perform a clamping operation to prevent the wheels from locking up. Based on the duration of the electronic parking request, it is determined that the pull-up operation of the electronic parking switch is continuously triggered, and when it is determined that the current vehicle speed is less than the set second vehicle speed threshold, the braking modules of each wheel continue to be driven to perform clamping operations until the lowering operation of the electronic parking switch is responded to, so as to determine the drift control conditions again.
7. The drift control method based on an electronic parking switch according to claim 3, characterized in that, The step of identifying whether the current parking operation is a drift control request operation includes: When the current vehicle speed is greater than the set first vehicle speed threshold and less than the set second vehicle speed threshold, the current parking operation is identified as the above-mentioned drift control request operation, and it is determined that the current vehicle meets the conditions for executing drift control.
8. A drift control system based on an electronic parking switch, characterized in that, The system includes: The instruction response module is used to respond to a drift confirmation instruction and obtain the electronic parking recognition result based on the drift confirmation instruction; The identification module is used to determine whether the conditions for executing drift control are met based on the electronic parking identification result; The drift execution module is used to drive the rear wheel brake module to perform a clamping operation according to the set driving braking strategy when it is determined that the drift control conditions are met, and to control the rear wheel brake module to stop running the set anti-lock braking strategy.
9. A vehicle control device, characterized in that, It includes a memory, a processor, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the drift control method based on an electronic parking switch as described in any one of claims 1 to 7.
10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the drift control method based on the electronic parking switch as described in any one of claims 1 to 7.