Vehicle wind tunnel environmental test device, method, host computer, medium and program

Abstract

The present application relates to the field of testing technology, and in particular to a vehicle wind tunnel environmental test device, method, host computer, medium and program, wherein the device includes: a test bench; an environmental chamber surrounding the test bench, used to simulate the temperature and humidity of the environment under real working conditions; a blower arranged around the test bench and connected to the vehicle speed sensor; a dust ejector and a particle trap arranged around the test bench; the particle trap is used to synchronously collect the particle density at different vehicle speeds and transmit the data to a controller; a hub controller arranged in the center of the test bench and connected to the driving wheel of the vehicle; a host computer, used to control the environmental chamber, the blower, the dust ejector, the particle trap and the hub controller to perform target operations and generate test results according to the test requirements. Thus, the problems in the related art that the vehicle has a high probability of failure and a high test cost due to insufficient sealing performance of the whole vehicle or parts in the real environment are solved.

Description

Technical Field

[0001] The present application relates to the field of testing technology, and in particular to a vehicle wind tunnel environment test device, method, host computer, medium and program. Background Art

[0002] As the world pays more attention to environmental protection and energy sustainability, the market share of new energy vehicles (such as electric vehicles and hybrid vehicles) has been rising year by year. Especially in areas with significant arid and dusty environments, the penetration rate of new energy vehicles is also gradually increasing. However, the extreme climate conditions in these areas have put forward higher requirements for new energy vehicles, especially in terms of the sealing performance of the whole vehicle and its components.

[0003] In related technologies, in deserts or areas with heavy dust, due to insufficient sealing performance of the vehicle or its components, it is easy to cause problems such as line short circuits and three-electric system failures, which seriously affect the safety and reliability of the vehicle. When major OEMs conduct road tests directly under actual vehicle conditions, the efficiency of analyzing and solving problems after failures is extremely low and the cost is high. Although road tests in real environments can obtain data that is closest to the actual situation, there are many limitations: high cost, low test efficiency, and many uncontrollable factors leading to poor stability. Summary of the invention

[0004] The present application provides a vehicle wind tunnel environment test device, method, host computer, medium and program to solve the problems in the related art that vehicles have a high probability of failure due to insufficient sealing performance of the whole vehicle or parts in a real environment, high test cost, low test efficiency, and poor stability due to many uncontrollable factors.

[0005] The first aspect of the present application provides a vehicle wind tunnel environmental test device, comprising the following steps: a test bench; an environmental chamber surrounding the test bench, used to simulate the temperature and humidity of the environment under real working conditions; a blower arranged around the test bench and connected to a vehicle speed sensor, used to simulate the airflow environment generated by different vehicle speeds; a dust ejector and a particle trap arranged around the test bench, wherein the dust ejector is used to adjust the dust injection amount to simulate the impact of particles on the vehicle during driving; the particle trap is used to synchronously collect the particle density at different vehicle speeds and transmit the data to a controller; a hub controller arranged in the center of the test bench and connected to the driving wheels of the vehicle, used to simulate the driving state of the vehicle under different road conditions according to road spectrum data; a host computer, used to control the environmental chamber, the blower, the dust ejector, the particle trap and the hub controller to perform target operations according to test requirements, and generate test results according to the test data during the test.

[0006] Optionally, it also includes: a data acquisition module for collecting real road spectrum data, wherein the road spectrum data includes vehicle speed, temperature, humidity and altitude.

[0007] Optionally, the host computer further includes: converting the road spectrum data into slope information to generate new road spectrum data.

[0008] Optionally, the formula for converting the road spectrum data into slope information to generate new road spectrum data is: slope = (elevation difference / horizontal distance)*100%, or slope angle = tan-1*(elevation difference / horizontal distance).

[0009] The second aspect of the present application provides a vehicle wind tunnel environmental test method, which is implemented using the vehicle wind tunnel environmental test device described in the above embodiment, wherein the method includes the following steps: acquiring road spectrum data under real working conditions; identifying the user's test requirements; controlling the environmental chamber, the blower, the dust ejector, the particulate matter collector and the hub controller to perform target operations according to the road spectrum data and the test requirements, and generating test results based on the test data during the test.

[0010] Optionally, controlling the environmental chamber, the blower, the dust ejector, the particle trap and the hub controller to perform target operations according to the road spectrum data and test requirements includes: identifying the vehicle speed, temperature, humidity and altitude in the road spectrum data; controlling the temperature of the environmental chamber to reach the target temperature, the humidity to reach the target humidity, the blower to adjust the wind speed to the target wind speed, the dust ejector to adjust the dust injection amount to the target threshold, the particle trap to capture particles and calculate the particle density, the hub controller to control the vehicle speed to reach the target speed, and adjust the resistance of the hub to the target resistance.

[0011] Optionally, before controlling the environmental chamber, the blower, the dust ejector, the particulate matter trap and the hub controller to perform the target operation according to the road spectrum data and the test requirements, it includes: moisturizing the contact surface between the wheel and the hub.

[0012] The third aspect of the present application provides a host computer, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to perform the vehicle wind tunnel environment test method as described in the above embodiment.

[0013] A fourth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to perform the vehicle wind tunnel environmental test method as described in the above embodiment.

[0014] The fifth aspect of the present application provides a computer program product, including a computer program or instructions, characterized in that when the computer program or instructions are executed, the vehicle wind tunnel environmental test method as described in the above embodiment is implemented.

[0015] Therefore, this application has at least the following beneficial effects:

[0016] The embodiment of the present application converts the road test in the area with large dust into an indoor bench test, simulates the high temperature and dry environment through the whole vehicle temperature environment chamber, monitors the vehicle speed through the hub, simulates the airflow environment during the vehicle driving process through the blower receiving the hub sensor, and simulates the impact of particles during the vehicle driving process through the dust ejector, so as to simulate the real environment and scene, improve the test efficiency, reduce the test cost, generate test results according to the test data in the test process, and improve the consistency, stability and accuracy of the test results.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A schematic block diagram of a vehicle wind tunnel environmental test device provided according to an embodiment of the present application;

[0020] Figure 2 A flow chart of a vehicle wind tunnel environmental test method provided according to an embodiment of the present application;

[0021] Figure 3 A schematic diagram of an automobile wind tunnel environmental test method provided according to an embodiment of the present application;

[0022] Figure 4 It is a schematic diagram of the structure of a host computer provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0024] The following describes the vehicle wind tunnel environmental testing device, method, host computer, storage medium and program of the embodiments of the present application with reference to the accompanying drawings.

[0025] Specifically, Figure 1 A block diagram of a vehicle wind tunnel environmental test device provided in an embodiment of the present application.

[0026] like Figure 1 As shown, the vehicle wind tunnel environmental test device 10 includes: a test bench 100, an environmental chamber 200, a blower 300, a dust ejector 400, a particle trap 500, a hub controller 600 and a host computer 700.

[0027] Among them, the environmental chamber 200 surrounds the test bench 100, and is used to simulate the temperature and humidity of the environment under real working conditions; the blower 300 is arranged around the test bench 100 and connected to the vehicle speed sensor, and is used to simulate the airflow environment generated by different vehicle speeds; the dust ejector 400 and the particle trap 500 are arranged around the test bench, wherein the dust ejector is used to adjust the dust injection amount to simulate the impact of particles on the vehicle during driving; the particle trap is used to synchronously collect the particle density at different vehicle speeds and transmit the data to the controller; the hub controller 600 is arranged in the center of the test bench and connected to the driving wheel of the vehicle, and is used to simulate the driving state of the vehicle under different road conditions according to the road spectrum data; the host computer 700 is used to control the environmental chamber, the blower, the dust ejector, the particle trap and the hub controller to perform target operations according to the test requirements, and generate test results according to the test data during the test.

[0028] It can be understood that the embodiments of the present application can convert road tests in areas with large dust levels into indoor bench tests, simulate high temperature and dry environments through a whole vehicle temperature environment chamber, monitor vehicle speed through a rotor, simulate the airflow environment during vehicle driving by receiving a rotor sensor through a blower, and simulate the impact of particles during vehicle driving through a dust ejector, so as to simulate real environments and scenarios, improve test efficiency, reduce test costs, generate test results based on test data during the test process, and improve the consistency, stability and accuracy of the test results.

[0029] In the embodiment of the present application, it also includes: a data acquisition module for collecting real road spectrum data, wherein the road spectrum data includes vehicle speed, temperature, humidity and altitude.

[0030] It can be understood that the embodiment of the present application can use the data acquisition module to collect real road spectrum data, providing important basic support for automobile wind tunnel environmental testing; it can not only generate real road spectra, but also significantly improve the realism, efficiency and economy of the test.

[0031] It should be noted that, because the acquisition frequency is 10Hz, the speed and slope conversion cycle is 0.1s. The speed and slope information is used to generate a new road spectrum, and the road spectrum duration is required to be ≥150min. The new road spectrum is imported into the hub controller. During the test, the vehicle sliding data is input to simulate the vehicle resistance, and the vehicle is allowed to run following the converted road spectrum.

[0032] In the embodiment of the present application, the host computer 700 also includes: converting the road spectrum data into slope information to generate new road spectrum data.

[0033] The formula for converting the road spectrum data into slope information to generate new road spectrum data is:

[0034] Slope = (elevation difference / horizontal distance)*100%, or, slope angle = tan-1*(elevation difference / horizontal distance).

[0035] It can be understood that the embodiments of the present application can convert road spectrum data into slope information and generate new road spectrum data, which can significantly improve the realism and accuracy of automobile wind tunnel environmental tests, optimize test settings, and improve test efficiency.

[0036] It should be noted that the collected altitude change information is converted into slope information. The conversion formula is as follows: Slope is the steepness of the surface unit. The ratio of the vertical height h and the horizontal width l of the slope is usually called the slope, represented by the letter i, that is, i=h / l. There are four ways to express the slope: percentage method, degree method, mil method and fraction method. Among them, the percentage method and degree method are more commonly used.

[0037] The percentage method expresses the slope, which is the percentage of the elevation difference between two points and their horizontal distance. The calculation formula is: Slope = (elevation difference / horizontal distance) x 100%. For example, a slope of 3% means that for every 100 meters of horizontal distance, the vertical direction rises (falls) by 3 meters.

[0038] The degree method uses degrees to express the slope, which is calculated using inverse trigonometric functions. The formula is as follows: Slope angle = tan-1 (elevation difference / horizontal distance). The tangent and sine values ​​of different angles can provide the specific angle value of the slope.

[0039] According to the vehicle wind tunnel environmental test device proposed in the embodiment of the present application, the road test in the dusty area is converted into an indoor bench test, the high temperature and dry environment is simulated by the whole vehicle temperature environment chamber, the vehicle speed is monitored by the hub, the airflow environment of the vehicle driving process is simulated by the blower receiving the hub sensor, and the impact of particles during vehicle driving is simulated by the dust ejector, so as to simulate the real environment and scene, improve the test efficiency, reduce the test cost, generate test results according to the test data during the test process, and improve the consistency, stability and accuracy of the test results.

[0040] Figure 2 A schematic flow chart of a vehicle wind tunnel environmental test method provided in an embodiment of the present application.

[0041] like Figure 2 As shown, the vehicle wind tunnel environmental test method includes the following steps:

[0042] In step S101, road spectrum data under real working conditions is obtained.

[0043] It can be understood that the embodiments of the present application can obtain road spectrum data under real working conditions to ensure that the collected data can fully reflect the environmental conditions of the vehicle during actual driving, thereby improving the authenticity and stability of subsequent tests.

[0044] It should be noted that this application uses V-BOX to collect the actual road conditions of the customer's working conditions. The collected road conditions information should include information such as vehicle speed, temperature, humidity, altitude, etc., and the collection frequency must be ≥10Hz.

[0045] In step S102, the user's test requirements are identified.

[0046] It can be understood that the embodiments of the present application can identify the user's test requirements, so as to subsequently control the environmental chamber, blower, dust ejector, particulate matter collector and hub controller to perform target operations according to the road spectrum data and test requirements, and generate test results based on the test data during the test process.

[0047] It should be noted that the user's test requirements in this application may include evaluating the vehicle's power performance, braking performance, aerodynamic performance, sealing performance, etc., and the test environment may be high temperature, low temperature, dry, humid, dusty, or particulate impact.

[0048] In step S103, the environmental chamber, the blower, the dust ejector, the particle trap and the hub controller are controlled to perform target operations according to the road spectrum data and the test requirements, and the test results are generated according to the test data during the test.

[0049] It can be understood that the embodiments of the present application can control the environmental chamber, blower, dust ejector, particulate matter collector and hub controller to perform target operations according to road spectrum data and test requirements, and generate test results based on the test data during the test process to ensure that the test process is strictly carried out in accordance with the actual working conditions and improve the accuracy and stability of the test.

[0050] In an embodiment of the present application, the environmental chamber, blower, dust ejector, particulate matter collector and hub controller are controlled according to road spectrum data and test requirements to perform target operations, including: identifying the vehicle speed, temperature, humidity and altitude in the road spectrum data; controlling the temperature of the environmental chamber to reach the target temperature, the humidity to reach the target humidity, the blower to adjust the wind speed to the target wind speed, the dust ejector to adjust the dust injection amount to the target threshold, the particulate matter collector to capture particulate matter and calculate the particle density, the hub controller to control the vehicle speed to reach the target speed, and adjust the hub resistance to the target resistance.

[0051] It can be understood that the embodiments of the present application can identify the vehicle speed, temperature, humidity and altitude in the road spectrum data; according to the vehicle speed, temperature, humidity and altitude, the temperature of the environmental chamber is controlled to reach the target temperature, the humidity reaches the target humidity, the blower adjusts the wind speed to the target wind speed, the dust ejector adjusts the dust ejection amount to the target threshold, the particle collector captures particles and calculates the particle density, the hub controller controls the vehicle speed to reach the target speed, and adjusts the hub resistance to the target resistance, so as to ensure that the test process is strictly carried out according to the actual working conditions and improve the accuracy and stability of the test.

[0052] It should be noted that the target temperature, target humidity, target wind speed, target threshold, particle density, target vehicle speed and target resistance can all be set according to actual needs or obtained by looking up a table without specific limitation.

[0053] Specifically, suppose a section of road spectrum data is as follows:

[0054] Time(s) Vehicle speed (m / s) Temperature(℃) humidity(%) Altitude(m) <![CDATA[Particle density (g / m 3 )]]> 0 27.78 25 50 100 0.2 0.1 27.78 25 50 103 0.3

[0055] The corresponding elevation difference Δh = 103-100 = 3 meters; horizontal distance Δd = 27.78m / s×0.1s=2.778 meters; slope (percentage) i = (3 / 2.778)×100%≈108.06%; slope angle θ = tan-1(3 / 2.778)≈47.43°

[0056] According to the above road spectrum data and test requirements, the environmental chamber, blower, dust ejector, particle collector and hub controller are controlled to perform target operations:

[0057] According to the temperature information in the road spectrum data, the temperature of the test environment is adjusted in real time through the environmental chamber, and the corresponding target temperature at this time is 25°C; according to the humidity information in the road spectrum data, the humidity of the test environment is adjusted in real time through the environmental chamber, and the corresponding target humidity at this time is 50%; according to the vehicle speed information in the road spectrum data, the corresponding airflow environment is simulated by the blower, and the corresponding vehicle speed at this time is 27.78m / s; if it is necessary to simulate wind speeds in different directions, it can be achieved by adjusting the angle of the blower; according to the particle density information in the road spectrum data, the dust injection amount is adjusted through the dust injector to ensure that the injection time of the dust injector is synchronized with the vehicle speed to simulate the real driving environment; according to the actual driving state of the vehicle, the resistance and speed of the hub are dynamically adjusted to ensure the realism of the test process.

[0058] It should be noted that if Figure 3 As shown, the temperature and humidity are controlled by the environmental chamber to simulate the temperature and humidity under real working conditions; the fan control unit is connected to the vehicle speed sensor to simulate the wind speed under different vehicle speeds. Particle catchers are arranged around the vehicle body, and the dust injection amount of the dust injector is adjusted according to the density of particles collected under real working conditions to simulate the dust environment; it is recommended to use colored dust to facilitate the inspection of dust intrusion into the vehicle and vehicle system components after the test.

[0059] In an embodiment of the present application, before controlling the environmental chamber, blower, dust ejector, particulate matter collector and hub controller to perform target operations according to road spectrum data and test requirements, it includes: moisturizing the contact surface between the wheel and the hub.

[0060] It can be understood that the embodiments of the present application can perform a moisturizing treatment on the contact surface between the wheel and the hub, effectively reducing the static electricity accumulation on the contact surface between the wheel and the hub, reducing the risk of dust explosion caused by static electricity sparks, avoiding dust explosion caused by high dust density, and improving safety performance.

[0061] It should be noted that the minimum density of dust explosion is 20-60g / m3. Open flames are strictly prohibited during this test process, and the contact surface between the wheel and the hub needs to be moisturized.

[0062] According to the vehicle wind tunnel environmental test method proposed in the embodiment of the present application, the road test in the dusty area is converted into an indoor bench test, the high temperature and dry environment is simulated by the whole vehicle temperature environment chamber, the vehicle speed is monitored by the hub, the airflow environment of the vehicle driving process is simulated by the blower receiving the hub sensor, and the impact of particles during vehicle driving is simulated by the dust ejector, so as to simulate the real environment and scene, improve the test efficiency, reduce the test cost, generate test results according to the test data during the test process, and improve the consistency, stability and accuracy of the test results.

[0063] Figure 4A schematic diagram of the structure of the host computer provided in the embodiment of the present application. The host computer may include:

[0064] Memory 401 , processor 402 , and a computer program stored in the memory 401 and executable on the processor 402 .

[0065] When the processor 402 executes the program, the vehicle wind tunnel environment test method provided in the above embodiment is implemented.

[0066] Furthermore, the host computer also includes:

[0067] The communication interface 404 is used for communication between the memory 401 and the processor 402 .

[0068] The memory 401 is used to store computer programs that can be executed on the processor 402 .

[0069] The memory 401 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0070] If the memory 401, the processor 402 and the communication interface 404 are implemented independently, the communication interface 404, the memory 401 and the processor 402 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0071] Optionally, in a specific implementation, if the memory 401, the processor 402 and the communication interface 404 are integrated on a chip, the memory 401, the processor 402 and the communication interface 404 can communicate with each other through an internal interface.

[0072] The processor 402 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0073] An embodiment of the present application also provides a computer-readable storage medium having a computer program or instruction stored thereon. When the computer program or instruction is executed by a processor, the vehicle wind tunnel environment test method as described above is implemented.

[0074] An embodiment of the present application also provides a computer program product, including a computer program or instructions, characterized in that when the computer program or instructions are executed, the above vehicle wind tunnel environment test method is implemented.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0076] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0077] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0078] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one or a combination of multiple of the following technologies known in the art: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0079] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

Claims

1. A vehicle wind tunnel environmental test device, characterized in that: include: Test bench; An environmental chamber surrounding the test bench is used to simulate the temperature and humidity of the environment under real working conditions; Blowers installed around the test bench and connected to the vehicle speed sensor are used to simulate the airflow environment generated by different vehicle speeds; Dust ejectors and particle traps are arranged around the test bench, wherein the dust ejectors are used to adjust the dust ejection amount to simulate the particle impact on the vehicle during driving; the particle traps are used to synchronously collect the particle density at different vehicle speeds and transmit the data to the controller; A hub controller, which is located in the center of the test bench and connected to the vehicle's drive wheels, is used to simulate the vehicle's driving state under different road conditions based on the road spectrum data; The host computer is used to control the environmental chamber, the blower, the dust ejector, the particle trap and the hub controller to perform target operations according to test requirements, and generate test results according to test data during the test process.

2. The vehicle wind tunnel environmental test device according to claim 1, characterized in that: Also includes: The data acquisition module is used to collect real road data, where the road data includes vehicle speed, temperature, humidity and altitude.

3. The vehicle wind tunnel environmental test device according to claim 2, characterized in that: The host computer also includes: converting the road spectrum data into slope information to generate new road spectrum data.

4. The vehicle wind tunnel environmental test device according to claim 3, characterized in that: The formula for converting the road spectrum data into slope information to generate new road spectrum data is: Slope = (elevation difference / horizontal distance) * 100%, or, slope angle = tan -1 *(Elevation difference / horizontal distance).

5. A vehicle wind tunnel environmental test method, characterized in that: The method is implemented using the vehicle wind tunnel environmental test device according to any one of claims 1 to 4, wherein the method comprises the following steps: Obtain road spectrum data under real working conditions; Identify user test needs; The environmental chamber, the blower, the dust ejector, the particle trap and the hub controller are controlled to perform target operations according to the road spectrum data and test requirements, and test results are generated according to the test data during the test.

6. The vehicle wind tunnel environmental test method according to claim 5, characterized in that: The controlling the environmental chamber, the blower, the dust ejector, the particle trap and the hub controller to perform target operations according to the road spectrum data and the test requirements includes: Identify vehicle speed, temperature, humidity and altitude in road spectrum data; According to the vehicle speed, temperature, humidity and altitude, the temperature of the environmental chamber is controlled to reach the target temperature, the humidity to reach the target humidity, the blower adjusts the wind speed to the target wind speed, the dust ejector adjusts the dust ejection amount to the target threshold, the particle trap captures particles and calculates the particle density, the hub controller controls the vehicle speed to reach the target speed, and adjusts the hub resistance to the target resistance.

7. The vehicle wind tunnel environmental test method according to claim 5, characterized in that: Before controlling the environmental chamber, the blower, the dust ejector, the particle trap and the hub controller to perform the target operation according to the road spectrum data and the test requirements, the method includes: Apply moisturizing treatment to the contact surface between the wheel and the hub.

8. A host computer, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the vehicle wind tunnel environmental test method according to any one of claims 5 to 7.

9. A computer-readable storage medium having a computer program or instruction stored thereon, characterized in that: When the computer program or instruction is executed by a processor, it is used to implement the vehicle wind tunnel environmental test method as described in any one of claims 5 to 7.

10. A computer program product comprising a computer program or instructions, characterized in that When the computer program or instruction is executed, the vehicle wind tunnel environment test method according to any one of claims 5 to 7 is implemented.

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