Control method and apparatus

Abstract

The application provides a control method and device, and relates to the technical field of vehicles. In the method, the state of a wheel spoiler can be adjusted according to speed information of a vehicle and a sound wave signal of the vehicle, so as to adjust the projected area of the wheel spoiler on the wheel, and the aerodynamic characteristics and acoustic performance are taken into account, the airflow in the wheel cavity can be effectively combed, the wind resistance is reduced, and the noise reduction effect is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a control method and apparatus. Background Technology

[0002] Wheel spoilers are positioned in front of the wheels to manage airflow within the wheel wells, reduce drag, and minimize wind noise. In some vehicles, to optimize the body shape, the wheel spoilers are smaller, thus limiting their effectiveness in managing airflow within the wheel wells and reducing drag and wind noise. Summary of the Invention

[0003] This application provides a control method and device that can effectively manage airflow in the wheel cavity, thereby reducing wind resistance and improving noise reduction.

[0004] In a first aspect, this application provides a control method, comprising: acquiring a vehicle's acoustic signal and the vehicle's speed information; determining a first state of a wheel spoiler based on the speed information and the acoustic signal; the first state comprising one or more of the following of the wheel spoiler: position, angle, shape, or area; and controlling the wheel spoiler to present the first state.

[0005] In this way, the control device adjusts the state of the wheel spoilers based on the vehicle's speed information and sound wave signals, thereby adjusting the projected area of ​​the wheel spoilers on the wheels. This balances aerodynamic characteristics and acoustic performance, effectively managing airflow in the wheel cavity and improving noise reduction while reducing wind resistance. The projection direction of the wheel spoilers on the wheels can be determined by the vehicle's direction of travel.

[0006] In one possible implementation, determining the first state of the wheel spoiler based on speed information and sound wave signal includes: determining the first state of the wheel spoiler based on speed information and sound wave signal through a first mapping relationship; the first mapping relationship is: the mapping relationship between speed information, sound wave signal and the first state.

[0007] The first mapping relationship can be based on experimental calibration. In this way, the control device determines the first state of the wheel spoiler through the first mapping relationship, thereby improving the reliability of the first state and the efficiency of determining the first state, and saving computing power.

[0008] In one possible implementation, in the first state, the projected area of ​​the wheel spoiler on the vehicle's wheel is positively correlated with the speed information, and the projection direction of the wheel spoiler on the vehicle's wheel is the vehicle's direction of travel.

[0009] In other words, when the vehicle is traveling at a high speed, the state of the vehicle's spoiler can be controlled to increase the projected area of ​​the spoiler on the vehicle's wheels, thereby reducing wind resistance and noise.

[0010] In one possible implementation, in the first state, the projected area of ​​the wheel spoiler on the vehicle's wheel is positively correlated with the sound wave signal.

[0011] In other words, when the amplitude of the vehicle's sound wave signal is large, the state of the vehicle's spoiler can be controlled to increase the projected area of ​​the wheel spoiler on the vehicle's wheels, thereby reducing wind resistance and noise.

[0012] In one possible implementation, controlling the wheel spoiler to present a first state includes: applying a first driving force to the wheel spoiler, controlling the wheel spoiler to translate, extend, rotate and / or fold to present the first state; the first driving force is obtained from a historical first state and the first state.

[0013] For example, a drive motor can be used to apply a primary driving force to the wheel spoiler, controlling its translation, extension, rotation, and / or folding to achieve a primary state. This allows for smooth and rapid control of the wheel spoiler's changing state, reducing spoiler change time and improving efficiency.

[0014] In one possible implementation, controlling the wheel spoiler to present a first state includes: applying a first voltage to the wheel spoiler to control the wheel spoiler to present a first state; the first voltage is obtained from a historical first state and the first state.

[0015] In this way, stepless changes in the wheel spoiler can be achieved, and the wheel spoiler air conditioning can change smoothly and continuously, with low noise during the change process.

[0016] One possible implementation includes: when the speed information is greater than a first speed threshold and / or the amplitude of the acoustic signal is greater than a first amplitude, the projected area of ​​the wheel spoiler on the wheel in the first state is maximized.

[0017] When the vehicle's speed exceeds a first speed threshold, the control device can maximize the projected area of ​​the wheel spoilers on the wheels in the first state. This further reduces wind resistance and improves noise reduction when the vehicle is traveling at high speeds.

[0018] In one possible implementation, the method further includes: determining a first state of the wheel spoiler based on speed information under one or more of the following conditions; one or more of the following conditions include: the amplitude of the sound wave signal is greater than a preset threshold, the sound wave signal indicates the presence of noise, or the weather is rainy; wherein the noise includes one or more of the following: human voice, navigation voice, command voice, or prompt tone.

[0019] Thus, in the event of failure of the aforementioned acoustic signal, the first state of the wheel spoiler is determined based on the speed information, and this fault-tolerant mechanism can improve the reliability of the first state.

[0020] In one possible implementation, the method further includes: if the duration of the speed information being greater than the second speed threshold is greater than the first duration, the projected area of ​​the wheel spoiler on the wheel in the first state is maximized; if the speed information drops to less than the second speed threshold and the duration is greater than or equal to the second duration, the first state of the wheel spoiler is determined based on the speed information and the sound wave signal.

[0021] Thus, when the vehicle speed remains high, the wheel spoilers have the largest projected area on the wheels, which can effectively manage the airflow in the wheel cavity, reducing wind resistance and improving noise reduction.

[0022] In one possible implementation, the method further includes: acquiring the vehicle's steering wheel angle and / or wind condition information; and determining a first state of the wheel spoiler based on the speed information, sound wave signal, steering wheel angle, and wind condition information.

[0023] In this way, the vehicle also determines the first state of the wheel spoilers based on steering wheel angle and wind conditions, reducing the impact on the wheels when the vehicle is turning or when there is crosswind, and further reducing wind resistance and noise.

[0024] In one possible implementation, the method further includes: acquiring vibration signals and / or air resistance of the vehicle; determining a first state of the wheel spoiler based on speed information and one or more of the following: one or more of which include acoustic signals, vibration signals of the vehicle, or air resistance.

[0025] In this way, the vehicle also determines the initial state of the wheel spoilers based on vibration signals and / or air resistance, further reducing wind resistance and noise.

[0026] Secondly, this application provides a control device, including: a wheel spoiler, a drive unit, a sensing unit, and a control unit; the wheel spoiler is installed in front of the wheel; the drive unit is connected to and / or electrically connected to the wheel spoiler for driving the wheel spoiler to adjust its state; the sensing unit is used to acquire the vehicle's acoustic signal and the vehicle's speed information; the control unit is used to determine a first state of the wheel spoiler based on the speed information and the acoustic signal; and control the wheel spoiler to present the first state.

[0027] Thirdly, this application provides a control device including at least one processor, each of the at least one processor being configured to implement the method in the first aspect or any possible implementation of the first aspect.

[0028] Optionally, the control device may also include a communication interface (or transceiver), with the processor coupled to the communication interface.

[0029] Fourthly, this application provides a vehicle for implementing the method in the first aspect or any possible implementation thereof. Alternatively, the vehicle is equipped with the control device described in the second or third aspect.

[0030] Fifthly, this application provides a chip system including at least one processor for supporting the implementation of the methods shown in the first aspect or any possible implementation of the first aspect.

[0031] In one possible design, the chip system also includes a memory for storing program instructions and data, which may be located inside or outside the processor.

[0032] The chip system can consist of chips or include chips and other discrete components.

[0033] In a sixth aspect, this application provides a computer-readable storage medium storing a computer program (also referred to as code or instructions) that, when executed by a processor, enables the implementation of the methods described in the first aspect or any possible implementation thereof.

[0034] In a seventh aspect, this application provides a computer program product comprising: a computer program (also referred to as code or instructions) that, when executed, enables the implementation of the methods in the first aspect or any possible implementation thereof.

[0035] It should be understood that the second to seventh aspects of this application correspond to the technical solutions of the first aspect of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation are similar, and will not be repeated here. Attached Figure Description

[0036] Figure 1 A schematic block diagram of an intelligent driving device provided in an embodiment of this application;

[0037] Figure 2 A schematic block diagram of an intelligent driving system provided in an embodiment of this application;

[0038] Figure 3 This is a schematic diagram of a wheel spoiler;

[0039] Figure 4 This is a schematic diagram of the structure of a control device provided in an embodiment of this application;

[0040] Figure 5 This application provides a schematic diagram illustrating the state changes of a wheel spoiler in an embodiment of the present application.

[0041] Figure 6 A schematic diagram illustrating a control method provided in an embodiment of this application;

[0042] Figure 7 A schematic block diagram of a control device provided in an embodiment of this application;

[0043] Figure 8 A schematic block diagram of another control device provided in an embodiment of this application. Detailed Implementation

[0044] To facilitate understanding of the embodiments of this application, the following points will be explained first:

[0045] First, in the embodiments of this application, the indication includes explicit indication (also known as direct indication) and implicit indication (also known as indirect indication). Explicit indication information A refers to including information A; implicit indication information A refers to indicating information A through the correspondence between information A and information B and direct indication information B. The correspondence between information A and information B can be predefined, pre-stored, pre-burned, or pre-configured; or it can refer to indicating information A through information B and preset rules.

[0046] Second, in the embodiments of this application, information C is used to determine information D, which includes determining information D based solely on information C, as well as determining it based on information C and other information. Furthermore, information C can also be used to determine information D indirectly, for example, in the case where information D is determined based on information E, and information E is determined based on information C.

[0047] Third, in the embodiments of this application, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates an "or" relationship between the preceding and following related objects, but it does not exclude the possibility of indicating an "and" relationship. The specific meaning can be understood in conjunction with the context. "At least one 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 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. Here, a, b, and c can be single or multiple.

[0048] Fourth, in the embodiments of this application, the use of prefixes such as "first" and "second" is merely for the purpose of distinguishing and describing different things belonging to the same name category, and does not constrain the order, size, or quantity of things. For example, "first threshold" and "second threshold" are simply different thresholds, and there is no temporal order, size, or priority relationship between them.

[0049] Fifth, the "sending" and "receiving" in the embodiments of this application can be performed between devices, such as between a second device and a first device; or they can be performed within a device, such as between components, modules, chips, software modules, or hardware modules within a device via a bus, wiring, or interface.

[0050] Sixth, in the embodiments of this application, "when," "if," and "if" all refer to the device making corresponding processing under certain objective circumstances, and are not limited to a time, nor do they require the device to make a judgment action when it is implemented, nor do they mean that there are other limitations.

[0051] Seventh, in the embodiments of this application, the words "example," "exemplarily," "for example," or "such as" are used to indicate that they are examples, illustrations, or explanations. Any embodiment or design that is described as "example," "exemplarily," "for example," or "such as" in this application should not be construed as being more preferred or advantageous than other embodiments or design options. Specifically, the use of the words "example," "exemplarily," "for example," or "such as" is intended to present the relevant concepts in a specific manner.

[0052] Eighth, the control method in the embodiments of this application can be applied to a vehicle or other devices in a vehicle. These other devices may be, for example, hardware units, software modules, or a combination of hardware units and software modules. These other devices include, but are not limited to, vehicle-mounted terminals, vehicle-mounted controllers, vehicle-mounted modules, vehicle-mounted components, vehicle-mounted chips, vehicle-mounted units, vehicle-mounted radar, or vehicle-mounted cameras, and other sensors. The vehicle can implement the control method provided in the embodiments of this application through these other devices.

[0053] Of course, the control method in this embodiment can also be used in other smart terminals besides vehicles, or installed in other smart terminals besides vehicles, or installed in a component of such a smart terminal. The smart terminal can be a smart transportation device, etc.

[0054] The embodiments of this application can be applied to intelligent driving devices, or devices equipped with intelligent driving systems. Below, in conjunction with... Figure 1 and Figure 2 A detailed description of intelligent driving equipment and intelligent driving systems is provided.

[0055] Figure 1 This is a functional block diagram of an intelligent driving device 100 to which this application embodiment applies. For example... Figure 1 As shown, the intelligent driving device 100 may include a perception system 120, a computing platform 130, and a control device 150.

[0056] It can be understood that the control device 150 can be understood as part of the intelligent driving device 100; or, in some scenarios, the control device 150 can also be understood as a system outside of the intelligent driving device 100.

[0057] The perception system 120 may include several types of sensors for sensing information about the environment surrounding the intelligent driving device 100.

[0058] For example, the perception system 120 may include a positioning system, which can be a global navigation satellite system (GNSS), such as GPS or BeiDou. Alternatively, the perception system 120 may also include one or more of the following sensors: wheel speed sensors, vehicle microphones, acceleration sensors, steering wheel angle sensors, motor rotary transformers, ultrasonic wind speed and direction sensors, intake pressure sensors, discrete vehicle static pressure sensors, inertial measurement units (IMUs), lidar, millimeter-wave radar, ultrasonic radar, and one or more camera devices.

[0059] Among them, wheel speed sensors can be used to obtain vehicle speed information, and on-board microphones can be used to obtain vehicle sound wave signals.

[0060] Some or all of the functions of the intelligent driving device 100 can be controlled by the computing platform 130.

[0061] For example, computing platform 130 may include processors 131 to 13n.

[0062] It should be understood that in the embodiments of this application, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a central processing unit (CPU), microprocessor, or digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits, where the logical relationships of the hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented as an application-specific integrated circuit (ASIC) or a programmable logic device (PLD). Furthermore, the processor can also be a hardware circuit designed for artificial intelligence, which can be understood as a type of ASIC, such as a neural network processing unit (NPU), tensor processing unit (TPU), or deep learning processing unit (DPU). In addition, the computing platform 130 may also include a memory for storing instructions. Some or all of the processors 131 to 13n can call the instructions in the memory to implement the corresponding functions.

[0063] The computing platform 130 can also control the operation of intelligent driving systems, which may include, for example, advanced driving assistance systems (ADAS) and autonomous driving systems (ADS). Intelligent driving systems utilize various sensors on the vehicle (including but not limited to: lidar, millimeter-wave radar, cameras, ultrasonic sensors, GPS, and inertial measurement units) to acquire information from the vehicle's surroundings, and analyze and process this information to achieve functions such as obstacle perception, target recognition, vehicle localization, path planning, and driver monitoring / alerts, thereby improving the safety, automation, and comfort of vehicle driving.

[0064] Under different levels of autonomous driving (or intelligent driving levels, a total of six levels from L0 to L5), intelligent driving systems can achieve different levels of autonomous driving assistance based on artificial intelligence algorithms and information acquired by multiple sensors. The aforementioned autonomous driving levels may be based on the classification standards of the Society of Automotive Engineers (SAE).

[0065] In this embodiment of the application, the sensing system 120 may collect sensor data through sensors and transmit the sensor data to the computing platform 130; the computing platform 130 may determine the first state of the wheel spoiler based on the sensor data from the sensing system 120 and control the wheel spoiler to present the first state.

[0066] Alternatively, the sensing system 120 may collect sensor data through sensors and transmit the sensor data to the control device 150; the control device 150 may determine the first state of the wheel spoiler based on the sensor data from the sensing system 120 and control the wheel spoiler to present the first state.

[0067] Optionally, the intelligent driving device 100 also includes a display device 140. The display device 140 in the cockpit of the intelligent driving device 100 is mainly divided into two categories: the first category is an in-vehicle display screen; the second category is a projection display screen, such as a head-up display (HUD).

[0068] A vehicle-mounted display screen is a physical display screen and an important component of an in-vehicle infotainment system. Multiple displays can be installed in the cabin, such as digital instrument cluster displays and central control screens. In some possible implementations, one or more of these vehicle-mounted displays can serve as human-machine interfaces (HMIs); for example, the central control screen can be an HMI. A head-up display (HUD), also known as a head-up display system, is primarily used to display driving information such as speed and navigation on a display device in front of the driver (e.g., on the windshield). This reduces driver eye movement time, avoids pupil changes caused by eye shifts, and improves driving safety and comfort.

[0069] Figure 2 A schematic block diagram of an intelligent driving system 200 provided in an embodiment of this application is shown. Figure 2 As shown, the system 200 includes a perception module 210 and a control module 220. Optionally, the intelligent driving system 200 may also include a human-machine interaction module 230 and a display module 240.

[0070] The sensing module 210 may include Figure 1 One or more sensors in the perception system 120 shown can be used to collect environmental information about the area where the vehicle is located, such as information about parking lines and obstacles.

[0071] Furthermore, the perception module 210 can process the collected environmental information to create a world model consisting of roads, obstacles, etc., for downstream modules (such as the human-computer interaction module 230 and the control module 220). The perception module 210 can send the information it collects and / or determines to the control module 220.

[0072] The control module 220 is similar to the computing platform 130 and can acquire sensing data from the sensing module 210, as described above.

[0073] The human-computer interaction module 230 may include Figure 1 One or more of the display devices 140 shown may include, for example, an HMI; the human-computer interaction module 230 may also include a sound-emitting device (such as a speaker, audio jack, etc.) and a sound-receiving device (such as a microphone). The display module 240 may include... Figure 1 One or more of the display devices 140 shown are configured to display a vehicle infotainment interface. The human-machine interface module 240 can receive user commands (including voice commands, touchscreen commands, etc.) and then control the changes of the interface displayed by the display module 240 according to the commands.

[0074] In this embodiment of the application, the sensing module 210 may collect sensor data through a sensor and transmit the sensor data to the control module 220; the control module 220 may determine the first state of the wheel spoiler based on the sensor data from the sensing module 210, and control the wheel spoiler to present the first state through the control device 250.

[0075] In the field of automotive aerodynamics, airflow control in the wheel area is a key technological direction for reducing wind resistance and wind noise. For example... Figure 3 As shown, wheel spoilers can be installed in front of the wheels to streamline airflow and reduce wind resistance and wind noise.

[0076] Optionally, this application embodiment can use a vehicle coordinate system (O-XYZ) as an example to describe the changing direction of the wheel spoiler. Here, the vehicle coordinate system (O-XYZ) is centered on a point within the vehicle, with the Z-axis perpendicular to the ground and the X-axis representing the vehicle's forward direction.

[0077] In some designs, fixed wheel spoilers with a rigid structure are installed in front of the wheels to manage airflow. These fixed wheel spoilers have a large area and can effectively improve the vehicle's wind noise performance at high speeds.

[0078] However, due to the large area of ​​the fixed wheel spoiler, it may detract from the aesthetics of the wheel arch area and clash with the vehicle's design. Furthermore, the fixed wheel spoiler cannot adapt to different speed requirements. At low speeds, the large area of ​​the wheel spoiler increases ineffective drag; reducing the area of ​​the fixed wheel spoiler would prevent effective airflow at high speeds.

[0079] Therefore, in other solutions, movable wheel spoilers can be installed in front of the wheels to regulate airflow. For example, the wheel spoilers can move in the Z-axis direction to adapt to different vehicle speed requirements.

[0080] However, existing wheel spoiler control strategies primarily rely on adjusting a single variable (such as vehicle speed). At different vehicle speeds, the wheel spoilers are controlled to extend, retract, or rotate according to a preset pattern to streamline airflow and reduce wind resistance and noise. This method fails to consider the actual impact of factors such as tire type, tire pressure, wear, road surface roughness, and ambient temperature and humidity on aerodynamic noise, resulting in a non-linear relationship between vehicle speed and actual noise levels. For example, at high speeds (e.g., above 120 km / h), the road surface may be flat, resulting in lower noise levels, but fully extended wheel spoilers may actually increase wind resistance and noise. Conversely, at low speeds, when encountering rough road surfaces, the vehicle may not trigger a speed threshold, preventing the wheel spoilers from opening or extending to reduce noise. Consequently, the effectiveness of the wheel spoilers in streamlining airflow within the wheel wells, reducing wind resistance, and minimizing wind noise is limited.

[0081] To address the aforementioned issues, this application provides a control method that adjusts the state of the wheel spoiler based on the vehicle's speed information and sound wave signals. This adjusts the projected area of ​​the wheel spoiler on the wheel, balancing aerodynamic characteristics and acoustic performance. It effectively manages airflow in the wheel cavity, reducing wind resistance while improving noise reduction.

[0082] The projection direction of the wheel spoiler onto the wheel can be the direction of the vehicle's travel.

[0083] It is understood that the wheel spoiler in this application embodiment may also be called a wheel wind deflector or wheel deflector, etc., and this application embodiment does not make specific limitations in this regard.

[0084] like Figure 4 The diagram shown is a structural schematic of the control device provided in an embodiment of this application. The control device includes a sensing unit 401, a control unit 402, a drive unit 403, and a wheel spoiler 404.

[0085] The sensing unit 401 is used to acquire sensor information of the vehicle, such as the speed information and sound wave signals mentioned above. The sensing unit 401 can be referred to the sensing system 120 described above, and will not be described again here.

[0086] The control unit 402 is used to determine the first state of the wheel spoiler 404 based on the sensor information acquired by the sensing unit 401.

[0087] Optionally, the control device can acquire the aforementioned sensor data via a controller area network (CAN).

[0088] Optionally, the control unit may be an electronic control unit (ECU) or a vehicle integration unit (VIU), or it may be a control device outside the vehicle. This application does not impose specific limitations on this.

[0089] The control unit 402 is also used to send control commands to the drive unit 403, instructing the drive unit 403 to drive the wheel spoiler 404 to present a first state.

[0090] The drive unit 403 can be connected to the wheel spoiler 404 via transmission and / or electrical connection.

[0091] When the drive unit 403 is connected to the wheel spoiler in a transmission manner, the drive unit 403 may be a drive motor, which uses driving force to control the wheel spoiler 404 to present a first state. When the drive unit 403 is electrically connected to the wheel spoiler 404, the drive unit 403 may be a piezoelectric drive unit, which uses voltage to control the wheel spoiler 404 to present a first state. Alternatively, the drive unit 403 may be other types of drive units, and the connection between the drive unit 403 and the wheel spoiler 404 may be other than specified in this embodiment.

[0092] In some examples, wheel spoilers can be positioned in front of the wheels and can change their state through translation, extension, rotation, and / or folding to adjust their projected area on the wheels, thereby effectively reducing wind resistance and noise during vehicle operation. For example, Figure 5 The diagram shown is a schematic representation of the state changes of the wheel spoiler provided in an embodiment of this application.

[0093] In some examples, the wheel spoilers can be moved in various directions.

[0094] For example, such as Figure 5 As shown in (a), the front view includes the wheel and the front view of the wheel spoiler, which can be translated left and right (translated in the Y-axis direction).

[0095] In the initial state (when the vehicle is stationary), the wheel spoilers can be located on the left side of the wheel. If it is necessary to increase the projected area of ​​the wheel spoilers on the wheel, the wheel spoilers can be moved to the right to the center of the wheel. Conversely, if it is necessary to reduce the projected area of ​​the wheel spoilers on the wheel when they are located in the center of the wheel, the wheel spoilers can be moved to the left to the left side of the wheel.

[0096] When wheel spoilers are used in vehicles, in the initial state, the wheel spoilers can be located inside the wheels. That is, the wheel spoiler corresponding to the left wheel is located on the right side of the wheel, and the wheel spoiler corresponding to the right wheel is located on the left side of the wheel, reducing the exposed area of ​​the wheel spoilers and improving the overall aesthetics of the vehicle.

[0097] Optionally, the wheel spoiler can also be moved up and down or to other angles; this application embodiment does not impose specific limitations on this.

[0098] In other examples, the wheel spoilers can extend and retract in various directions.

[0099] For example, such as Figure 5 As shown in (b), the front view of the wheel and the front view of the wheel spoiler are included. The wheel spoiler can extend and retract to the left and right (translate in the Y-axis direction).

[0100] The wheel spoiler is located on the left side of the wheel. In the initial state, if it is necessary to increase the projected area of ​​the wheel spoiler on the wheel, the wheel spoiler can be controlled to extend to the right, increasing the spoiler area. Conversely, if it is necessary to reduce the projected area of ​​the wheel spoiler on the wheel when it is extended, the wheel spoiler can be controlled to retract to the left, decreasing the spoiler area.

[0101] When wheel spoilers are used in vehicles, in the initial state, the wheel spoilers can be located inside the wheels. That is, the wheel spoiler corresponding to the left wheel is located on the right side of the wheel, and the wheel spoiler corresponding to the right wheel is located on the left side of the wheel, reducing the exposed area of ​​the wheel spoilers and improving the overall aesthetics of the vehicle.

[0102] Optionally, the wheel spoiler can also extend and retract vertically or to other angles; this application embodiment does not impose specific limitations on this.

[0103] In other examples, the wheel spoilers can rotate in various directions.

[0104] For example, such as Figure 5 As shown in (c), the diagram includes a front view of the wheel and a front view of the wheel spoiler, as well as a side view of the wheel and a side view of the wheel spoiler. The wheel spoiler can rotate about a rotation axis, which can be the upper side of the wheel spoiler.

[0105] Initially, the angle between the wheel spoiler and the Z-axis is α1. To increase the projected area of ​​the wheel spoiler on the wheel, the spoiler can be rotated counterclockwise, decreasing the angle between the spoiler and the Z-axis to α2. Conversely, with the angle between the wheel spoiler and the Z-axis at α2, to decrease the projected area, the spoiler can be rotated clockwise, increasing the angle between the spoiler and the Z-axis to α1.

[0106] Optionally, the rotation axis can also be the lower side, left side, right side, or middle position of the wheel spoiler; or, the rotation axis can also be other positions of the wheel spoiler; or, the wheel spoiler can also rotate around a certain rotation point, and the embodiments of this application do not impose specific limitations on this.

[0107] In other examples, the wheel spoilers can be folded in various directions.

[0108] For example, such as Figure 5 As shown in (d), the diagram includes a front view of the wheel, a front view of the wheel spoiler, and a top view of the wheel spoiler, which can be folded around a fold line. The fold line can be located in the middle of the wheel spoiler and extends vertically.

[0109] In the initial state, the wheel spoiler's folding angle is β1. To increase the projected area of ​​the wheel spoiler on the wheel, the spoiler can be folded outwards, increasing the folding angle to β2. Conversely, with the folding angle β2, to decrease the projected area of ​​the wheel spoiler on the wheel, the spoiler can be folded inwards and rotated clockwise, decreasing the folding angle to β1.

[0110] Optionally, the folding line can also be located at the center left of the wheel spoiler, extending vertically; at the center right of the wheel spoiler, extending vertically; at the center, extending horizontally; at the center top of the wheel spoiler, extending horizontally; or at the center bottom of the wheel spoiler, extending horizontally. Alternatively, the folding line can include multiple lines. Alternatively, the folding line can extend in other directions. This application embodiment does not impose specific limitations on the number of folding lines or their extension directions.

[0111] In other examples, wheel spoilers can also be made of flexible materials or magnetorheological fluid smart materials to achieve stepless adjustment.

[0112] Taking a wheel spoiler made of a flexible material as an example, when the voltage applied to the wheel spoiler is high, the curvature of the wheel spoiler is large; when the voltage applied to the wheel spoiler is low, the curvature of the wheel spoiler is small. For example, such as... Figure 5As shown in (e), it includes a front view of the wheel, a front view of the wheel spoiler, and a top view of the wheel spoiler. The wheel spoiler is arc-shaped and the curvature can vary.

[0113] Initially, the wheel spoiler has a large curvature. To increase the projected area of ​​the wheel spoiler on the wheel, the curvature can be reduced. Conversely, if the wheel spoiler has a small curvature and the projected area on the wheel needs to be reduced, the curvature can be increased.

[0114] Optionally, the curvature of the wheel spoiler can change in one direction or in multiple directions; this application example does not impose specific limitations on this.

[0115] Below, in conjunction with Figure 6 The control method described in this application is explained in detail. The specific form and quantity of each device shown are merely examples and should not be construed as limiting the implementation of the method provided in this application.

[0116] The control method provided in this application can be implemented through a vehicle or other intelligent transportation equipment. Below, taking a control device as the executing entity, the control method of this application embodiment will be described in detail.

[0117] It should be understood that the control device can be the vehicle itself, or other devices within the vehicle, such as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, in-vehicle units, in-vehicle radar or in-vehicle cameras, and other sensors. It can also be a logic module or software that can realize all or part of the vehicle's functions. The control device can be part of the vehicle, or it can be located outside the vehicle.

[0118] Alternatively, the control device may be other intelligent terminals besides vehicles, such as intelligent transportation equipment; or devices applied to other intelligent terminals. This application does not specifically limit this.

[0119] Figure 6 This is a flowchart illustrating a control method 600 provided in an embodiment of this application. Figure 6 As shown, method 600 includes the following steps:

[0120] S601, The control device acquires the vehicle's acoustic signals and vehicle speed information.

[0121] It is understandable that the sound wave signal of a vehicle can represent the noise of the vehicle, which can include wind noise and tire noise (such as tire-road friction noise, tread pumping noise, etc.).

[0122] In one scenario, the control device can acquire the vehicle's acoustic signals and speed information through sensors.

[0123] For example, the control device can acquire the vehicle's sound wave signals through the onboard microphone and obtain the vehicle's speed information through the wheel speed sensor.

[0124] The vehicle-mounted microphone can be installed inside the vehicle, such as inside the headrest, on the roof, in the A-pillar, on the steering wheel, in the rearview mirror, or on the rear roof or B-pillar. Alternatively, it can be installed outside the vehicle, such as near the wheels (between the wheels and the body, for example, inside the front wheel arch), near the front of the vehicle, or near the rear of the vehicle. This microphone can be a newly added microphone or a reused microphone from the vehicle; this application does not impose specific limitations on its installation.

[0125] In another scenario, other devices besides the control device (such as intelligent driving systems) can acquire the vehicle's sound wave signals and speed information; and when other devices acquire the vehicle's sound wave signals and speed information, they can send the vehicle's sound wave signals and speed information to the control device.

[0126] S602, The control device determines the first state of the wheel spoiler based on speed information and sound wave signals.

[0127] The first state of the wheel spoiler may include one or more of the following: position, angle, shape or area.

[0128] For example, the first state may include the position of the wheel spoiler as position A; or, the first state may include the angle between the wheel spoiler and the Z-axis as angle B; or, the first state may include the shape of the wheel spoiler as shape C; or, the first state may include the area of ​​the wheel spoiler as area D; or, the first state may include the position of the wheel spoiler as position A and the angle as angle B; or, the first state may include the position of the wheel spoiler as position A and the area as area D; or, the first state may include the position of the wheel spoiler as position A, the angle as angle B, the shape as shape C, and the area as area D.

[0129] It should be understood that the above example is only one example, and the first state of the wheel spoiler can also be other states. This application embodiment does not impose specific limitations on this.

[0130] S603, The control device controls the wheel spoiler to be in the first state.

[0131] Optional, refer to the above. Figure 5The control device can change the position of the wheel spoiler by translating it; or by extending or retracting it to change its area; or by rotating it to change its angle; or by folding it to change its shape; or by changing its curvature to change its shape, thereby controlling the wheel spoiler to present a first state.

[0132] In this way, the control device adjusts the state of the wheel spoilers based on the vehicle's speed information and sound wave signals, taking into account both aerodynamic characteristics and acoustic performance. This can effectively streamline the airflow in the wheel cavity, reducing wind resistance while improving noise reduction.

[0133] In some examples, the projected area of ​​the wheel spoilers on the vehicle's wheels is positively correlated with speed. That is, when the vehicle speed is high, the state of the vehicle spoilers can be controlled to increase the projected area of ​​the wheel spoilers on the vehicle's wheels, thereby reducing wind resistance and noise.

[0134] In other examples, the projected area of ​​the wheel spoiler on the vehicle's wheels is positively correlated with the sound wave signal. That is, when the amplitude of the vehicle's sound wave signal is large, the state of the vehicle's spoiler can be controlled to increase the projected area of ​​the wheel spoiler on the vehicle's wheels, thereby reducing wind resistance and noise.

[0135] The control device can control the wheel spoiler to present a first state based on the speed information and sound wave signal, so as to control the projected area of ​​the wheel spoiler on the vehicle wheel and effectively reduce wind resistance and noise.

[0136] Optionally, the control device can determine the first state of the wheel spoiler based on the first mapping relationship, speed information, and acoustic signals. The first mapping relationship is the mapping relationship between speed information, acoustic signals, and the first state of the wheel spoiler. The control device can pre-store this first mapping relationship.

[0137] In some examples, this first mapping relationship can be a formula.

[0138] Refer to the above Figure 5 For example, taking the first state of the wheel spoiler as an example of translational change, the speed information, sound wave signal and the first state of the wheel spoiler can satisfy the following formula (1).

[0139] L=m ×(1+K×Δ) Formula (1)

[0140] Where L is the distance between the wheel spoiler and the initial position, m is the vehicle speed reference value, m is a positive number, K is the correction coefficient of the sound wave signal, K is a positive number, and Δ is the noise value, Δ is greater than -1 and less than 1.

[0141] Optionally, the initial position of the wheel spoiler can be the position of the wheel spoiler when the vehicle is stationary. For example, the initial position of the wheel spoiler is as described above. Figure 5 In (a), the position of the wheel spoiler when it is located on the left side of the wheel.

[0142] Optionally, when the wheel spoiler is in its initial position, the projected area of ​​the wheel spoiler on the wheel can be greater than or equal to 1 / 3 of the tire's projected area to ensure effective airflow management in the wheel cavity.

[0143] Optionally, the vehicle speed reference quantity m can be determined through a mapping relationship between vehicle speed and the vehicle speed reference quantity, where the vehicle speed reference quantity increases as the vehicle speed increases. This mapping relationship can be based on experimental calibration.

[0144] The correction factor K for the acoustic signal can be experimentally calibrated; for example, K can be 1.1.

[0145] The noise value can be obtained by normalizing the sound wave signal.

[0146] In other examples, the first mapping relationship may also be a mapping relationship table, which is based on experimental calibration; or, the first mapping relationship may also be other, such as a mapping relationship graph, etc., and this application embodiment does not impose specific restrictions on this.

[0147] It is understood that when the first state of the wheel spoiler changes through translation, the aforementioned L is the distance of the wheel spoiler from its initial position; when the first state of the wheel spoiler changes through extension or retraction, the aforementioned L is the extension distance of the wheel spoiler from its initial state; when the first state of the wheel spoiler changes through rotation, the aforementioned L is the angle difference (including direction) between the wheel spoiler and its initial angle; when the first state of the wheel spoiler changes through folding, the aforementioned L is the folding angle difference (including direction) between the wheel spoiler and its initial folding angle; when the wheel spoiler is made of a flexible material, the aforementioned L can be the difference in curvature between the wheel spoiler and its initial curvature, etc., and this application embodiment does not impose specific limitations on this.

[0148] In some examples, the control device may also determine the first state of the wheel spoiler based primarily on speed information and secondarily on sound wave signals.

[0149] For example, the first state of the wheel spoiler can be determined based on speed information, and when the amplitude of the sound wave signal is greater than a certain threshold, the wheel spoiler in the first state has the largest projected area on the wheel.

[0150] For example, as described above Figure 5Taking the wheel spoiler shown in (a) as an example, the wheel spoiler can be shifted to the right by a maximum of 10cm. When the speed information is greater than 40km / h, the first state is when the wheel spoiler is shifted to the right by 3cm from the initial state; when the speed information is greater than 80km / h, the first state is when the wheel spoiler is shifted to the right by 6cm from the initial state; when the speed information is greater than 120km / h, the first state is when the wheel spoiler is shifted to the right by 10cm from the initial state.

[0151] Meanwhile, when the amplitude of the sound wave signal is greater than a certain threshold (e.g., 60dB), the first state is that the wheel spoiler moves 10cm to the right from the initial state.

[0152] It should be understood that the above is only one example. The first state of the wheel spoiler can be determined based on speed information classification, and the above certain threshold can also be other values. This application embodiment does not impose specific limitations on this.

[0153] In some cases, the sound signal captured by the vehicle microphone may be distorted. For example, the amplitude of the sound signal captured by the vehicle microphone may exceed a preset threshold, the sound signal may indicate the presence of noise, or the weather may be rainy.

[0154] The noise indicated by the acoustic signal may include one or more of the following: human voice, navigation voice, instruction voice, or prompt tone.

[0155] In the above situation, the correlation between the sound wave signal collected by the vehicle microphone and the wind noise is low, and the control device can determine the first state of the wheel spoiler based on the vehicle's speed information.

[0156] Optionally, the control device can determine the first state of the wheel spoiler based on the mapping relationship between the vehicle speed and the first state of the wheel spoiler. For example, the Δ value in the above formula (1) can be zero.

[0157] Alternatively, the control device can determine the first state of the wheel spoiler based on speed information.

[0158] In other examples, the control device may also determine the first state of the wheel spoiler based primarily on sound wave signals and secondarily on speed information.

[0159] For example, the first state of the wheel spoiler can be determined based on the classification of sound wave signals. At the same time, when the speed information is greater than a certain threshold, the wheel spoiler in the first state is controlled to have the largest projected area on the wheel.

[0160] For example, as described above Figure 5Taking the wheel spoiler shown in (a) as an example, the wheel spoiler can be shifted to the right by a maximum of 10cm. When the amplitude of the sound wave signal is greater than 20dB, the first state is when the wheel spoiler shifts to the right by 3cm from the initial state; when the amplitude of the sound wave signal is greater than 40dB, the first state is when the wheel spoiler shifts to the right by 6cm from the initial state; when the amplitude of the sound wave signal is greater than 60dB, the first state is when the wheel spoiler shifts to the right by 10cm from the initial state.

[0161] Meanwhile, when the speed information is greater than a certain threshold (such as 120km / h), the first state is that the wheel spoiler moves 10cm to the right from the initial state.

[0162] It should be understood that the above is only one example. The first state of the wheel spoiler can be determined based on the classification of sound wave signals, and the above certain threshold can also be other values. This application does not impose specific limitations on this.

[0163] In some cases, the vehicle speed information collected by wheel speed sensors can be distorted. For example, if the wheel speed sensor malfunctions, the collected speed information may change abruptly. In this case, the control device can determine the initial state of the wheel spoilers based on the acoustic signal.

[0164] Optionally, the control device can determine the first state of the wheel spoiler based on the classification of the acoustic signal.

[0165] Thus, based on the above-mentioned fault-tolerant mechanism, the control device can improve the reliability of the embodiments of this application.

[0166] In the above embodiments, the distance L between the wheel spoiler and the initial position increases with the increase of vehicle speed. When the vehicle speed is high, the larger the projected area of ​​the wheel spoiler on the wheel, the better the effect of sorting the airflow.

[0167] To improve the airflow management effect of the wheel spoilers, when the vehicle speed exceeds a first speed threshold, the control device can maximize the projected area of ​​the wheel spoilers on the wheels in the first state. For example, the first speed threshold is 110 km / h. This ensures that when the vehicle speed exceeds 110 km / h, the projected area of ​​the wheel spoilers on the wheels is at its maximum, further reducing wind resistance and improving noise reduction when the vehicle is traveling at high speeds.

[0168] Furthermore, the distance L between the wheel spoiler and its initial position increases with the increase of the amplitude of the sound wave signal. When the amplitude of the sound wave signal is high, the larger the projected area of ​​the wheel spoiler on the wheel, the better the effect of sorting the airflow.

[0169] To improve the airflow management effect of the wheel spoilers, when the amplitude of the vehicle's sound wave signal is greater than a first amplitude, the projected area of ​​the wheel spoilers on the wheels is maximized in the first state. For example, the first amplitude is 60 dB. This ensures that when the amplitude of the vehicle's sound wave signal is greater than 60 dB, the projected area of ​​the wheel spoilers on the wheels is at its maximum, increasing the airflow management effect of the wheel spoilers when the vehicle's noise level is high, reducing wind resistance while improving noise reduction.

[0170] In some scenarios, when a vehicle is traveling at high speeds, the sampling, signal processing, and sound signal output of the onboard microphone are time-shifted compared to the actual noise change. Therefore, the onboard microphone's detection results cannot synchronously represent the instantaneous actual noise level. In this situation, the sound signal collected by the onboard microphone is lagging and has low reliability. The control device can then determine the initial state of the wheel spoilers based on the vehicle's speed information.

[0171] Optionally, if the duration of the speed information being greater than the second speed threshold is greater than the first duration, the projected area of ​​the wheel spoiler on the wheel in the first state is the largest.

[0172] The second speed threshold and the first duration can be obtained experimentally. For example, the second speed threshold can be 100 km / h, and the first duration can be 3 seconds. That is, when the vehicle speed is greater than 100 km / h and the duration is greater than 3 seconds, it can be said that the vehicle is in a high-speed driving condition. The control device can use the vehicle speed information to determine that the projected area of ​​the wheel spoiler on the wheel is the maximum, thereby improving the wheel spoiler to reduce wind resistance and noise reduction.

[0173] Subsequently, when the speed information drops below the second speed threshold and the duration is greater than or equal to the second duration, the control device resumes coordinated control of the speed information and the sound wave signal, and determines the first state of the wheel spoiler based on the speed information and the sound wave signal.

[0174] The second duration can be obtained based on experiments, for example, the second duration can be 2 seconds.

[0175] It should be understood that the examples of the second speed threshold, the first duration, and the second duration mentioned above are merely examples, and the embodiments of this application do not impose specific limitations on them.

[0176] Thus, when the vehicle speed remains high, the wheel spoilers have the largest projected area on the wheels, which can effectively manage the airflow in the wheel cavity, reducing wind resistance and improving noise reduction.

[0177] In the examples above, the control device determines the first state of the wheel spoiler using speed information and sound wave signals. In other examples, the control device may also acquire the vehicle's steering wheel angle and / or wind condition information, and determine the first state of the wheel spoiler based on the speed information, sound wave signals, and steering wheel angle; or, determine the first state of the wheel spoiler based on the speed information, sound wave signals, and wind condition information; or, determine the first state of the wheel spoiler based on the speed information, sound wave signals, wind condition information, and steering wheel angle.

[0178] The steering wheel angle can include the angle of rotation to the left or the angle of rotation to the right, and the wind information can include wind speed and wind direction.

[0179] Optionally, the control device can obtain the steering wheel angle through a steering wheel angle sensor, and obtain the vehicle's wind speed and direction information through an ultrasonic wind speed and direction sensor. Alternatively, the control device can also obtain wind condition information and steering wheel angle through other means. This application embodiment does not impose specific limitations on these methods.

[0180] Taking the determination of the first state of the wheel spoiler by the control device based on speed information, sound wave signal, wind condition information and steering wheel angle as an example.

[0181] The control device can pre-store speed information, sound wave signals, wind condition information, and a second mapping relationship between the steering wheel angle and the first state of the wheel spoiler, and determine the first state of the wheel spoiler based on the speed information, sound wave signals, wind condition information, steering wheel angle, and the second mapping relationship.

[0182] Optionally, the second mapping relationship can refer to the above formula (1), where the correction coefficient K of the sound wave signal can be determined based on wind condition information and steering wheel angle.

[0183] The correction coefficient K of the acoustic signal can be determined by a mapping relationship with the wind condition information and the steering wheel angle. This mapping relationship can be based on experimental calibration, and this application embodiment does not impose specific limitations on it.

[0184] In this way, the vehicle determines the first state of the wheel spoilers based on steering wheel angle and wind conditions, reducing the impact on the wheels when the vehicle is turning or when there is crosswind, and further reducing wind resistance and noise.

[0185] In other examples, the control device may also acquire vehicle vibration signals and / or air resistance, and determine a first state of the wheel spoiler based on vehicle speed information and one or more of the following: wherein one or more of the following include sound wave signals, vehicle vibration signals, or air resistance.

[0186] The vibration signal of the vehicle can be obtained through an accelerometer.

[0187] Optionally, the acceleration sensor can be installed on the inner wall of the wheel to measure tire vibration signals, or the acceleration sensor can be installed in other locations on the vehicle to measure vibration signals at other locations on the vehicle. This application does not impose specific limitations on this.

[0188] In some examples, the projected area of ​​the wheel spoiler on the vehicle's wheels is positively correlated with the vibration signal. That is, when the amplitude of the vehicle's vibration signal is large, the state of the vehicle's spoiler can be controlled to increase the projected area of ​​the wheel spoiler on the vehicle's wheels, thereby reducing wind resistance and noise.

[0189] Air resistance is directly proportional to air density, and vehicles experience different levels of air resistance at different altitudes. In higher altitude areas, such as plateaus, the air is thin and the air pressure is low, resulting in less air resistance for vehicles. In lower altitude areas, such as flatlands, the air pressure is high and the air is dense, leading to greater air resistance.

[0190] Optionally, the vehicle can obtain altitude information of its location through barometric pressure sensors or a positioning system to determine the magnitude of air resistance.

[0191] In some examples, the projected area of ​​the wheel spoiler on the vehicle's wheels is positively correlated with air resistance. That is, when the vehicle's air resistance is high, the state of the vehicle's spoiler can be controlled to increase the projected area of ​​the wheel spoiler on the vehicle's wheels, thereby reducing wind resistance and noise.

[0192] Optionally, the control device can determine the first state of the wheel spoiler based on a third mapping relationship, speed information, sound wave signal, vibration signal, and air resistance. The third mapping relationship is the mapping relationship between speed information, sound wave signal, vibration signal, air resistance, and the first state of the wheel spoiler.

[0193] For example, speed information, sound wave signal, vibration signal, air resistance and the first state of the wheel spoiler can satisfy the following formula (2).

[0194] L = m × (1 + K × Δ) × (1 + H × a) × n Formula (2)

[0195] Where L is the distance between the wheel spoiler and the initial position, m is the vehicle speed reference value (m is a positive number), K is the correction coefficient of the sound wave signal (K is a positive number), Δ is the noise value (Δ is greater than -1 and less than 1), H is the correction coefficient of the vibration signal (H is a positive number), a is the vibration value (a is greater than -1 and less than 1), and N is the air resistance coefficient (N is a positive number).

[0196] Optionally, m, K, and Δ can be found in the content of formula (1) above.

[0197] The correction factor H for the vibration signal can be experimentally calibrated, for example, and K can be 1.2.

[0198] The vibration value can be obtained by normalizing the vibration signal.

[0199] The air drag coefficient N can be determined by the mapping relationship between sea wave height and air drag coefficient, where the air drag coefficient decreases as sea wave height increases. This mapping relationship can be based on experimental calibration.

[0200] Alternatively, the third mapping relationship can also be a mapping relationship table, which is based on experimental calibration; or the third mapping relationship can also be other, such as a mapping relationship graph, etc., and this application embodiment does not impose specific restrictions on this.

[0201] Optionally, the third mapping relationship can also be a mapping relationship between speed information, vibration signal, air resistance and the first state of the wheel spoiler. That is, the Δ value in the above formula (2) is zero; or, the third mapping relationship can also be a mapping relationship between speed information, sound wave signal, vibration signal and the first state of the wheel spoiler. That is, the N value in the above formula (2) is 1; or, the third mapping relationship can also be a mapping relationship between speed information, sound wave signal, air resistance and the first state of the wheel spoiler. That is, the a value in the above formula (2) is zero. This application embodiment does not impose specific restrictions on this.

[0202] The above embodiments describe a situation where the control device determines the first state of the wheel spoiler based on sensor information. After determining the first state of the wheel spoiler, the control device can control the wheel spoiler to present the first state.

[0203] Optionally, the control unit can control the wheel spoilers to present a first state via the drive unit.

[0204] In some examples, the drive unit can be a drive motor, such as a micro servo motor, to apply a first driving force to the wheel spoiler and control the wheel spoiler to translate, extend, rotate and / or fold, presenting a first state.

[0205] For example, the control device may send a pulse width modulation (PWM) control signal to the drive unit, instructing the drive unit to apply a first driving force to the wheel spoiler.

[0206] The first driving force can be obtained from the historical first state and the currently determined first state.

[0207] Based on the above Figure 5The wheel spoiler shown in (a) is located on the left side of the wheel and can be moved left and right as an example.

[0208] For example, the control device determines the first state of the wheel spoiler as follows: the distance L between the wheel spoiler and its initial position is 5cm. If the historical first state is: the distance L between the wheel spoiler and its initial position is 2cm, then the first driving force should drive the wheel spoiler to translate 3cm to the right. The drive unit can determine the first driving force based on the 3cm rightward translation of the wheel spoiler and apply the first driving force to the wheel spoiler.

[0209] In this way, the control device can shift the wheel spoiler 3cm to the right based on the first driving force through the drive unit, so as to adjust the projected area of ​​the wheel spoiler on the wheel, effectively sort out the airflow in the wheel cavity, and improve the noise reduction effect while reducing wind resistance.

[0210] In other examples, when the wheel spoiler is made of a flexible material, the drive unit can be a piezoelectric drive unit that applies a first voltage to the wheel spoiler to control the wheel spoiler to change its curvature and present a first state.

[0211] Optionally, the control device may send a control signal to the drive unit, instructing the drive unit to apply a first voltage to the wheel spoiler.

[0212] The first voltage can be obtained from the historical first state and the currently determined first state.

[0213] Based on the above Figure 5 The wheel spoiler shown in (e) is made of flexible material. The curvature of the wheel spoiler is controlled by voltage as an example.

[0214] For example, the control device determines the first state of the wheel spoiler as follows: the arc difference between the wheel spoiler and the initial arc is 3 rad. If the historical first state is: the arc difference between the wheel spoiler and the initial arc is 1 rad, then the first voltage should drive the arc of the wheel spoiler to increase by 2 rad. The drive unit can determine the first voltage based on the arc increase of 2 rad and apply the first voltage to the wheel spoiler.

[0215] In this way, the control device can adjust the projected area of ​​the wheel spoiler on the wheel by increasing the arc of the wheel spoiler by 2 rad based on the first driving force through the drive unit, effectively sorting the airflow in the wheel cavity, reducing wind resistance and improving noise reduction effect.

[0216] In other examples, when the wheel spoiler is made of magnetorheological fluid smart material, the drive unit can also be an electromagnetic field drive unit; or when the wheel spoiler is made of other materials or other control methods, the drive unit can also be other corresponding control units. This application does not impose specific limitations on this.

[0217] Thus, by controlling the wheel spoiler to be in its first state using the above method, the synergistic optimization of aerodynamic and acoustic performance can be achieved, reducing wind resistance and noise.

[0218] It should be noted that, in the embodiments of this application, all steps in the accompanying drawings are merely examples, and the order of the numbers of the methods described above does not imply the order of execution and should not constitute any limitation on the embodiments of this application. For example, in practical applications, the execution order of the steps shown in this application can be adjusted, and some steps can be added or removed; the embodiments of this application do not limit this.

[0219] The above text combined Figure 6 The control method of the embodiments of this application is described in detail below, in conjunction with Figure 7 and Figure 6 This application describes in detail the control device according to embodiments of the present application. The control device includes modules or units for executing each part of the above embodiments. The modules or units shown may be software or hardware, or hardware, or a combination of software and hardware. The control device is only briefly illustrated below; for details of the implementation, please refer to the description of the foregoing method embodiments, which will not be repeated below.

[0220] Figure 7 This is a schematic block diagram of a control device 700 provided in an embodiment of this application. Figure 7 As shown, the device 700 includes an acquisition unit 701 and a control unit 702.

[0221] In one possible implementation, the device 700 is used to implement the steps performed by the control device in the above method embodiments.

[0222] The acquisition unit 701 is used to acquire the vehicle's acoustic signal and vehicle speed information.

[0223] Control unit 702 is used to determine a first state of the wheel spoiler based on speed information and sound wave signals; the first state includes one or more of the following of the wheel spoiler: position, angle, shape or area; and to control the wheel spoiler to present the first state.

[0224] Optionally, the control unit 702 is used to determine the first state of the wheel spoiler based on speed information and sound wave signal through a first mapping relationship; the first mapping relationship is: the mapping relationship between speed information, sound wave signal and the first state.

[0225] Optionally, in the first state, the projected area of ​​the wheel spoiler on the vehicle's wheel is positively correlated with the speed information, and the projection direction of the wheel spoiler on the vehicle's wheel is the vehicle's direction of travel.

[0226] Optionally, in the first state, the projected area of ​​the wheel spoiler on the vehicle's wheel is positively correlated with the sound wave signal.

[0227] Optionally, the device 700 further includes a drive unit and a control unit 702, which are used to apply a first driving force to the wheel spoiler through the drive unit, and control the wheel spoiler to translate, extend, rotate and / or fold, presenting a first state; the first driving force is obtained from the historical first state and the first state.

[0228] Optionally, the control unit 702 is used to apply a first voltage to the wheel spoiler through the drive unit to control the wheel spoiler to present a first state; the first voltage is obtained from the historical first state and the first state.

[0229] Optionally, when the speed information is greater than a first speed threshold and / or the amplitude of the sound wave signal is greater than a first amplitude, the wheel spoiler in the first state has the largest projected area on the wheel.

[0230] Optionally, the first state of the wheel spoiler is determined based on speed information under one or more of the following conditions: the amplitude of the sound wave signal is greater than a preset threshold, the sound wave signal indicates the presence of noise, or the weather is rainy; wherein, the noise includes one or more of the following: human voice, navigation voice, command voice, or prompt tone.

[0231] Optionally, if the duration of the speed information being greater than the second speed threshold is greater than the first duration, the projected area of ​​the wheel spoiler on the wheel is maximized in the first state; when the speed information drops to less than the second speed threshold and the duration is greater than or equal to the second duration, the control unit 702 is used to determine the first state of the wheel spoiler based on the speed information and the sound wave signal.

[0232] The acquisition unit 701 is used to acquire the vehicle's steering wheel angle and / or wind condition information; the control unit 702 is used to determine the first state of the wheel spoiler based on speed information, sound wave signal, steering wheel angle and wind condition information.

[0233] Acquisition unit 701 is used to acquire vibration signals and / or air resistance of the vehicle; control unit 702 is used to determine a first state of the wheel spoiler based on speed information and one or more of the following: one or more of which include sound wave signals, vehicle vibration signals or air resistance.

[0234] It should be understood that the device 700 here is embodied in the form of a functional unit. The term "unit" here can refer to application-specific integrated circuits (ASICs), electronic circuits, processors (e.g., shared processors, proprietary processors, or group processors) and memory for executing one or more software or firmware programs, integrated logic circuits, and / or other suitable components supporting the described function. For example, when a unit is implemented in the form of a processing element scheduler code, the processing element can be a general-purpose processor, such as a central processing unit (CPU), or other processors capable of calling program code, such as a controller. Furthermore, these units can be integrated together to implement a system-on-a-chip (SOC).

[0235] In an optional example, those skilled in the art will understand that the device 700 may specifically be the control device in the above embodiments. The device 700 may be used to execute the various processes and / or steps corresponding to the control device in the above method embodiments. To avoid repetition, it will not be described again here.

[0236] The aforementioned device 700 has the function of implementing the corresponding steps executed by the control device in the aforementioned method; the aforementioned function can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the aforementioned function. In an embodiment of this application, Figure 7 The device 700 in the middle can also be a chip.

[0237] Figure 8 A schematic block diagram of a control device 800 provided in an embodiment of this application is shown. The device 800 can be a chip system; or it can be an apparatus configured with a chip system to implement the methods shown in the above method embodiments. In this embodiment, the chip system can be composed of chips, or it can include chips and other discrete devices.

[0238] like Figure 8 As shown, the device 800 may include a processor 810, which can be used to execute computer programs or instructions in memory to perform the various steps and / or processes corresponding to the control device in the above method embodiments.

[0239] In one possible implementation, the device 800 further includes a communication interface 820. The communication interface 820 can be used to communicate with other devices via a transmission medium, thereby enabling the device 800 to communicate with other devices. The communication interface 820 may be, for example, a transceiver, an input / output interface, a pin, a bus, a transceiver circuit, or a device capable of transmitting and receiving functions. The processor 810 can utilize the communication interface 820 to input and output data for executing the various steps and / or processes corresponding to the control device in the above method embodiments.

[0240] In one possible implementation, the device 800 further includes at least one memory 830 for storing program instructions and / or data. The memory 830 is coupled to the processor 810. The coupling in this embodiment is an indirect coupling or communication connection between devices, units, or units, and can be electrical, mechanical, or other forms, used for information exchange between devices, units, or units. The processor 810 may operate in conjunction with the memory 830. The processor 810 may execute program instructions stored in the memory 830.

[0241] Optionally, the memory 830 may be a memory disposed in the device 800. Exemplarily, the memory 830 may be integrated with the processor 810; or, the memory 830 may be disposed separately from the processor 810.

[0242] Optionally, memory 830 can be memory outside of device 800. It may also be memory outside of device 800.

[0243] This application provides an electronic device, which includes a processor and a memory; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory, causing the electronic device to perform the above-described method.

[0244] This application provides a chip. The chip includes a processor, which is used to call a computer program in memory to execute the technical solutions in the above embodiments. Its implementation principle and technical effects are similar to those in the related embodiments described above, and will not be repeated here.

[0245] This application provides a vehicle equipped with a control device, which can be referred to the above description and is capable of executing the above methods.

[0246] This application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, it implements the methods described above. The methods described in the above embodiments can be implemented wholly or partially by software, hardware, firmware, or any combination thereof. If implemented in software, the functionality can be stored as one or more instructions or code on or transmitted over the computer-readable medium. The computer-readable medium can include computer storage media and communication media, and can also include any medium that can transfer a computer program from one place to another. The storage medium can be any target medium accessible by a computer.

[0247] In one possible implementation, a computer-readable medium may include random access memory (RAM), read-only memory (ROM), compact disc read-only memory (CD-ROM) or other optical disc storage, magnetic disk storage or other magnetic storage devices, or any other medium intended to carry or store required program code in the form of instructions or data structures, and accessible by a computer. Furthermore, any connection is appropriately referred to as a computer-readable medium. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. As used herein, disks and optical discs include optical discs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically, while optical discs optically reproduce data using lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0248] This application provides a computer program product, which includes a computer program that, when run, causes a computer to perform the above-described method.

[0249] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0250] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0251] It is understood that, in the embodiments of this application, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

Claims

1. A control method, characterized in that, include: Acquire the vehicle's acoustic signals and the vehicle's speed information; The first state of the wheel spoiler is determined based on the speed information and the sound wave signal; the first state includes one or more of the following of the wheel spoiler: position, angle, shape or area; The wheel spoiler is controlled to present the first state.

2. The method according to claim 1, characterized in that, Determining the first state of the wheel spoiler based on the speed information and the acoustic signal includes: Based on the speed information and the sound wave signal, the first state of the wheel spoiler is determined through a first mapping relationship; the first mapping relationship is the mapping relationship between the speed information, the sound wave signal and the first state.

3. The method according to claim 1 or 2, characterized in that, In the first state, the projected area of ​​the wheel spoiler on the vehicle's wheel is positively correlated with the speed information, and the projection direction of the wheel spoiler on the vehicle's wheel is the vehicle's direction of travel.

4. The method according to any one of claims 1-3, characterized in that, In the first state, the projected area of ​​the wheel spoiler on the vehicle's wheel is positively correlated with the sound wave signal.

5. The method according to any one of claims 1-4, characterized in that, Controlling the wheel spoiler to present the first state includes: A first driving force is applied to the wheel spoiler to control the wheel spoiler to translate, extend, rotate and / or fold, presenting the first state; the first driving force is obtained from the historical first state and the first state.

6. The method according to any one of claims 1-5, characterized in that, Controlling the wheel spoiler to present the first state includes: A first voltage is applied to the wheel spoiler to control the wheel spoiler to present the first state; the first voltage is obtained from the historical first state and the first state.

7. The method according to any one of claims 1-6, characterized in that, include: When the speed information is greater than a first speed threshold and / or the amplitude of the sound wave signal is greater than a first amplitude, the projected area of ​​the wheel spoiler on the wheel in the first state is the largest.

8. The method according to any one of claims 1-7, characterized in that, The method further includes: The first state of the wheel spoiler is determined based on the speed information under one or more of the following conditions; One or more of the following situations include: the amplitude of the sound wave signal is greater than a preset threshold, the sound wave signal indicates the presence of noise, or the weather is rainy; wherein, the noise includes one or more of the following: human voice, navigation voice, command voice, or prompt tone.

9. The method according to claim 8, characterized in that, The method further includes: If the duration of the speed information being greater than the second speed threshold is greater than the first duration, the projected area of ​​the wheel spoiler on the wheel in the first state is the largest. When the speed information drops to less than the second speed threshold and the duration is greater than or equal to the second duration, the first state of the wheel spoiler is determined based on the speed information and the sound wave signal.

10. The method according to any one of claims 1-9, characterized in that, The method further includes: Obtain the vehicle's steering wheel angle and / or wind condition information; The first state of the wheel spoiler is determined based on the speed information, the sound wave signal, the steering wheel angle, and the wind condition information.

11. The method according to any one of claims 1-10, characterized in that, The method further includes: Acquire vehicle vibration signals and / or air resistance; The first state of the wheel spoiler is determined based on the speed information and one or more of the following: the one or more of the following include the acoustic signal, the vibration signal of the vehicle, or the air resistance.

12. A control device, characterized in that, include: Wheel spoilers, drive unit, sensing unit, and control unit; The wheel spoiler is installed in front of the wheel; The drive unit is connected to the wheel spoiler via transmission and / or electrical connection, and is used to drive the wheel spoiler to adjust its state. The sensing unit is used to acquire the vehicle's acoustic signals and the vehicle's speed information. The control unit is used to determine a first state of the wheel spoiler based on the speed information and the sound wave signal; and to control the wheel spoiler to present the first state.

13. A control device, characterized in that, The device includes at least one processor and a memory for storing computer-readable instructions, which, when read from the memory by the at least one processor, cause the device to perform the method as described in any one of claims 1 to 11.

14. A vehicle, characterized in that, Includes the control device as described in claim 12 and / or claim 13.

15. A computer program product, characterized in that, The computer program product includes: a computer program or instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1 to 11.

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