Vehicle noise calculation method, in-vehicle device, and vehicle

Abstract

The application discloses a vehicle noise calculation method, a vehicle-mounted device and a vehicle. The method can effectively integrate and utilize existing data resources by converting research on a vehicle into data analysis on excitation points of a vehicle model. According to normal vibration amplitudes of the excitation points, normal surface stiffness and a normal noise transfer function, point noises of each excitation point are determined respectively, and the total noise of the vehicle model is determined through accumulation and superposition, so that the noise of the vehicle model can be quantitatively represented, and then, the vehicle can be analyzed in NVH performance in advance through noise control, the controllability of a vehicle development node is improved, and the vehicle development cycle is shortened.

Description

Technical Field

[0001] This invention relates to the field of vehicle control technology, and in particular to a method for calculating vehicle noise, an on-board device, and a vehicle. Background Technology

[0002] NVH performance encompasses noise performance, vibration performance, and comfort performance, and is a comprehensive performance indicator for measuring the quality of automobile manufacturing. With increasingly higher demands for passenger vehicle quality, improving overall vehicle NVH performance has become a major concern for both vehicle manufacturers and component suppliers. Body panels are subjected to external stimuli, which then radiate noise into the vehicle interior, affecting NVH quality. Therefore, controlling the sound emission quality of the body panels is crucial for improving vehicle NVH performance.

[0003] Currently, data analysis of vehicle NVH performance primarily involves establishing a TB (Body Finite Element) model of the vehicle body to analyze the noise transfer function from the excitation point to the ear response point. If the noise transfer function is substandard, further analysis is performed, including panel contribution analysis, nodal contribution analysis, and operational deformation analysis, to identify panels with significant impact on the noise transfer function. Structural improvements are then made to optimize the sound quality of these panels. However, the modeling process is time-consuming, and analysis using the TB body finite element model often requires production to proceed, hindering early intervention in NVH analysis.

[0004] Therefore, existing technologies for analyzing the NVH performance of vehicles have the problem that they cannot perform NVH analysis in advance, making it difficult to control the vehicle development process. Summary of the Invention

[0005] In view of this, it is necessary to provide a vehicle noise calculation method, an on-board device, and a vehicle to solve the problem in the prior art that the inability to perform NVH analysis in advance is due to the inability to obtain vehicle noise in advance.

[0006] To address the above problems, this invention provides a method for calculating vehicle noise, comprising:

[0007] Obtain multiple excitation points corresponding to the vehicle model;

[0008] The normal vibration amplitude, normal surface stiffness, and normal noise transfer function are obtained for each excitation point.

[0009] The point noise at each excitation point is determined based on the normal vibration amplitude, normal surface stiffness, and normal noise transfer function.

[0010] The total noise of the vehicle model is determined by cumulatively superimposing the noise from multiple points.

[0011] Furthermore, multiple stimulus points corresponding to the vehicle model are obtained, including:

[0012] The vehicle model is divided into blocks, resulting in multiple panels;

[0013] According to the preset selection rules, excitation points are selected for multiple boards to obtain the corresponding multiple excitation points.

[0014] Furthermore, the various panels include a front bulkhead, a windshield, a floor, a roof panel, a front door panel, a rear door panel, a rear windshield, a rear bulkhead, and side panels.

[0015] Furthermore, the normal vibration amplitude, normal surface stiffness, and normal noise transfer function are obtained for each excitation point, including:

[0016] The transmitted noise at each excitation point is decomposed according to the excitation source, transmission path, and response system.

[0017] Based on the excitation source, the normal vibration amplitude of each excitation point is obtained;

[0018] Based on the transmission path, the normal surface stiffness of each excitation point is obtained;

[0019] Based on the response system, the normal noise transfer function of each excitation point is obtained.

[0020] Furthermore, based on the normal vibration amplitude, normal surface stiffness, and normal noise transfer function, the point noise at each excitation point is determined, including:

[0021] Construct a formula for calculating noise sound pressure;

[0022] Based on the normal vibration amplitude, normal surface stiffness, and normal noise transfer function, the point noise at each excitation point is determined using the noise sound pressure calculation formula.

[0023] Furthermore, the formula for calculating noise sound pressure is:

[0024]

[0025] Among them, P ij E represents the point noise at the j-th excitation point of the i-th plate. ij Let A be the normal surface stiffness of the j-th excitation point of the i-th plate. ij Let NTF be the normal vibration amplitude of the j-th excitation point of the i-th plate. ij Let f be the normal noise transfer function of the j-th excitation point of the i-th block, and f be the center frequency.

[0026] Furthermore, based on the noise from multiple points, the total noise of the vehicle model is determined by cumulative superposition, including:

[0027] Formula for calculating noise in structural panels;

[0028] Based on the noise at multiple points, the noise of multiple boards is determined separately using the board noise calculation formula.

[0029] Construct the formula for calculating total noise;

[0030] Based on the panel noise of multiple panels, the total noise of the vehicle model is determined using the total noise calculation formula.

[0031] Furthermore, the formula for calculating board noise is:

[0032]

[0033] The formula for calculating total noise is:

[0034]

[0035] Where, N i Let P be the board noise of the i-th board. 总 This represents the total noise.

[0036] To address the aforementioned problems, the present invention also provides an in-vehicle device, comprising: a processor and a memory; the memory storing a computer-readable program executable by the processor;

[0037] When the processor executes a computer-readable program, it implements the steps in the vehicle noise calculation method described above.

[0038] To address the aforementioned problems, the present invention also provides a vehicle including the vehicle-mounted equipment as described above.

[0039] The beneficial effects of adopting the above technical solution are as follows: This invention provides a vehicle noise calculation method, an on-board device, and a vehicle. This method transforms the study of the vehicle into data analysis of the excitation points of the vehicle model, which can effectively integrate and utilize existing data resources. Based on the normal vibration amplitude, normal surface stiffness, and normal noise transfer function of the excitation point, the point noise of each excitation point is determined, and the total noise of the vehicle model is determined by cumulative superposition. This enables the quantitative representation of the noise of the vehicle model, and further enables the pre-analysis of NVH performance of the vehicle by controlling the noise, thereby improving the controllability of vehicle development nodes and shortening the vehicle development cycle. Attached Figure Description

[0040] Figure 1 This is a flowchart illustrating an embodiment of the vehicle noise calculation method provided by the present invention;

[0041] Figure 2 A schematic diagram of the structure of an embodiment of an automotive panel surrounding a driver's cab acoustic cavity model provided by the present invention;

[0042] Figure 3A schematic diagram showing the results of an embodiment of the front bulkhead excitation point selection results provided by the present invention;

[0043] Figure 4 A schematic diagram of the results of an embodiment of the floor excitation point selection results provided by the present invention;

[0044] Figure 5 A schematic diagram of the results of an embodiment of the rear windshield excitation point selection provided by the present invention;

[0045] Figure 6 A schematic diagram of the results of one embodiment of the ceiling excitation point selection provided by the present invention;

[0046] Figure 7 A schematic diagram showing the results of an embodiment of the rear panel excitation point selection results provided by the present invention;

[0047] Figure 8 A schematic diagram of the results of an embodiment of the windshield excitation point selection results provided by the present invention;

[0048] Figure 9 A schematic diagram of the results of an embodiment of the front door panel excitation point selection results provided by the present invention;

[0049] Figure 10 A schematic diagram of the results of an embodiment of the rear door panel excitation point selection results provided by the present invention;

[0050] Figure 11 This is a schematic flowchart of an embodiment of the present invention for obtaining the normal vibration amplitude, normal surface stiffness, and normal noise transfer function of each excitation point;

[0051] Figure 12 A flowchart illustrating an embodiment of the present invention for determining the total noise of a vehicle model;

[0052] Figure 13 This is a flowchart illustrating an embodiment of the present invention for calculating in-vehicle noise. Detailed Implementation

[0053] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0054] NVH performance encompasses noise performance, vibration performance, and comfort performance, and is a comprehensive performance indicator for measuring the quality of automobile manufacturing. With increasingly higher demands for passenger vehicle quality, improving overall vehicle NVH performance has become a major concern for both vehicle manufacturers and component suppliers. Body panels are subjected to external stimuli, which then radiate noise into the vehicle interior, affecting NVH quality. Therefore, controlling the sound emission quality of the body panels is crucial for improving vehicle NVH performance.

[0055] Currently, data analysis of vehicle NVH performance primarily involves establishing a TB (Body Finite Element) model of the vehicle body to analyze the noise transfer function from the excitation point to the ear response point. If the noise transfer function is substandard, further analysis is performed, including panel contribution analysis, nodal contribution analysis, and operational deformation analysis, to identify panels with significant impact on the noise transfer function. Structural improvements are then made to optimize the sound quality of these panels. However, the modeling process is time-consuming, and analysis using the TB body finite element model often requires production to proceed, hindering early intervention in NVH analysis.

[0056] Therefore, existing technologies for analyzing the NVH performance of vehicles have the problem that they cannot perform NVH analysis in advance, making it difficult to control the vehicle development process.

[0057] Research has shown that noise performance is a part of NVH performance. When noise performance is below the target level, the human senses will feel comfortable, and NVH performance will be at a better level. Therefore, by reducing vehicle noise, NVH performance can be improved to a certain extent.

[0058] In order to calculate vehicle noise in a timely manner and improve vehicle NVH performance, this invention provides a vehicle noise calculation method, an on-board device, and a vehicle, which are described in detail below.

[0059] like Figure 1 As shown, Figure 1 A flowchart illustrating an embodiment of the vehicle noise calculation method provided by the present invention includes:

[0060] Step S101: Obtain multiple excitation points corresponding to the vehicle model;

[0061] Step S102: Obtain the normal vibration amplitude, normal surface stiffness, and normal noise transfer function for each excitation point;

[0062] Step S103: Determine the point noise at each excitation point based on the normal vibration amplitude, normal surface stiffness, and normal noise transfer function;

[0063] Step S104: Based on the noise from multiple points, determine the total noise of the vehicle model by cumulative superposition.

[0064] In this embodiment, firstly, multiple excitation points corresponding to the vehicle model are obtained; then, the normal vibration amplitude, normal surface stiffness, and normal noise transfer function of each excitation point are obtained respectively; next, the point noise of each excitation point is determined according to the normal vibration amplitude, normal surface stiffness, and normal noise transfer function; finally, the total noise of the vehicle model is determined by accumulating and superimposing the multiple point noises.

[0065] In this embodiment, by transforming the study of vehicles into data analysis of the excitation points of the vehicle model, existing data resources can be effectively integrated and utilized. Based on the normal vibration amplitude, normal surface stiffness, and normal noise transfer function of the excitation point, the point noise of each excitation point is determined, and the total noise of the vehicle model is determined by cumulative superposition. This enables the quantitative representation of the noise of the vehicle model, and by controlling the noise, the NVH performance analysis of the vehicle can be performed in advance, improving the controllability of vehicle development nodes and shortening the vehicle development cycle.

[0066] In a preferred embodiment, in step S101, in order to obtain multiple excitation points corresponding to a vehicle model with high reliability, the vehicle model is first divided into blocks to obtain multiple plates; then, according to a preset selection rule, excitation points are selected for the multiple plates to obtain the corresponding multiple excitation points.

[0067] In this embodiment, by dividing the vehicle into blocks and starting from the characteristics of the vehicle itself, each vehicle component can be analyzed separately, avoiding the problem of different components receiving different attention and causing noise data disorder. In addition, since the structure of the components in each area of ​​the vehicle body is basically determined, by determining multiple excitation points for each component, the excitation points of each component can be located evenly according to a certain pattern, thereby effectively ensuring the reliability of the excitation points.

[0068] It should be noted that the sheet metal structure of each area on the vehicle body is basically fixed, so the modal configuration of these sheets can also be determined. For example... Figure 2 As shown, Figure 2 This is a schematic diagram of an embodiment of an automotive panel that surrounds the acoustic cavity model of the driver's cab provided by the present invention.

[0069] Specifically, the vehicle's various panels include the front bulkhead, windshield, floor, roof panel, front door panel, rear door panel, rear windshield, rear bulkhead, and side panels. By dividing the panels into blocks according to modal arrays, the vehicle can be processed in blocks to organize the data and improve its logical structure.

[0070] It should be noted that if the natural frequency and sound quality of automotive panels do not meet the standards, they will couple with the acoustic cavity mode of the cab, producing a booming sound and affecting the NVH quality of the car. Therefore, for large automotive panels that are easily excited and coupled with the acoustic cavity, it is necessary to set target values ​​for natural frequency and sound quality in the early stages of automotive R&D.

[0071] Excitation points are selected on each plate; these are the load application points, used to apply vibration excitation force. Excitation points are mainly distributed on plates or components on the vehicle body that can vibrate and generate sound. These plates or components typically have a large area, making them easy to excite and radiate sound, which couples with the acoustic cavity to produce a booming sound. Loading points should avoid reinforcing ribs, bosses, and mounting holes, and should reflect the overall or local vibration of the plate or component.

[0072] In one specific embodiment, the effect of pushing the acoustic cavity at any point within the plate area can be considered to be essentially the same. However, on the one hand, in actual experiments, the number of sensors is also limited, making it impossible to measure all points; on the other hand, in order to avoid data errors caused by data selection.

[0073] Therefore, the preset selection rules include: selecting discrete points that can reflect overall or local vibrations as excitation points according to the principle of uniform distribution and aesthetics.

[0074] As a preferred embodiment, such as Figure 3 As shown, Figure 3 This is a schematic diagram illustrating an embodiment of the front bulkhead excitation point selection result provided by the present invention. Reference numerals 31-38 represent the positions of the 1st to 8th excitation points of the front bulkhead, respectively.

[0075] As a preferred embodiment, such as Figure 4 As shown, Figure 4 This is a schematic diagram illustrating an embodiment of the floor excitation point selection result provided by the present invention. Reference numerals 401-410 represent the positions of the 1st to 10th excitation points on the floor, respectively.

[0076] As a preferred embodiment, such as Figure 5 As shown, Figure 5 This is a schematic diagram illustrating an embodiment of the rear windshield excitation point selection result provided by the present invention. Reference numerals 51-55 represent the positions of the 1st to 5th excitation points of the rear windshield, respectively.

[0077] As a preferred embodiment, such as Figure 6 As shown, Figure 6 This is a schematic diagram illustrating an embodiment of the ceiling excitation point selection results provided by the present invention. Reference numerals 61-65 represent the positions of the 1st to 5th excitation points on the ceiling, respectively.

[0078] As a preferred embodiment, such as Figure 7 As shown, Figure 7 This is a schematic diagram illustrating an embodiment of the rear panel excitation point selection result provided by the present invention. Reference numerals 71-76 represent the positions of the 1st to 6th excitation points of the rear panel, respectively.

[0079] As a preferred embodiment, such as Figure 8 As shown, Figure 8 This is a schematic diagram illustrating an embodiment of the windshield excitation point selection result provided by the present invention. Reference numerals 81-85 represent the positions of the 1st to 5th excitation points on the windshield, respectively.

[0080] As a preferred embodiment, such as Figure 9 As shown, Figure 9 This is a schematic diagram illustrating an embodiment of the front door panel excitation point selection result provided by the present invention. Reference numerals 91-95 represent the positions of the 1st to 5th excitation points of the front door panel, respectively.

[0081] As a preferred embodiment, such as Figure 10 As shown, Figure 10 This is a schematic diagram illustrating an embodiment of the rear door panel excitation point selection result provided by the present invention. Reference numerals 101-105 represent the positions of the 1st to 5th excitation points of the rear door panel, respectively.

[0082] In a preferred embodiment, in step S102, in order to obtain the normal vibration amplitude, normal surface stiffness, and normal noise transfer function of each excitation point, such as... Figure 11 As shown, Figure 11 A flowchart illustrating an embodiment of the present invention for obtaining the normal vibration amplitude, normal surface stiffness, and normal noise transfer function at each excitation point includes:

[0083] Step S121: Decompose the transmitted noise at each excitation point according to the excitation source, transmission path, and response system.

[0084] Step S122: Based on the excitation source, obtain the normal vibration amplitude of each excitation point;

[0085] Step S123: Based on the transmission path, obtain the normal surface stiffness of each excitation point;

[0086] Step S124: Based on the response system, obtain the normal noise transfer function for each excitation point.

[0087] In this embodiment, firstly, the transmitted noise at each excitation point is decomposed according to the excitation source, transmission path, and response system; then, based on the excitation source, the normal vibration amplitude of each excitation point is obtained; next, based on the transmission path, the normal surface stiffness of each excitation point is obtained; finally, based on the response system, the normal noise transfer function of each excitation point is obtained.

[0088] In this embodiment, by decomposing the transmitted noise at each excitation point, data on the transmitted noise in three aspects—excitation source, transmission path, and response system classification—are obtained, thereby enabling the acquisition of the normal vibration amplitude, normal surface stiffness, and normal noise transfer function for each excitation point.

[0089] It should be noted that the normal noise transfer function refers to the normal NTF, and the noise transfer function is a transfer function used to analyze and calculate structures.

[0090] In one specific embodiment, the excitation source for noise transmission in the body panels includes: vibration excitation at each excitation point of the body panels.

[0091] The transmission path of noise transmitted through body panels includes: the surface stiffness of each body panel excitation point.

[0092] The noise transmission response system of the body panels refers to the noise generation capability of the body. The metric is the sound transfer function (NTF) of the body, which includes the NTF from the excitation point of each body panel to the ear response point.

[0093] Target decomposition refers to the decomposition of noise transmitted through body panels according to the excitation source, transmission path, and response system.

[0094] Taking the front panel as an example, the specific system objectives of the front panel are shown in Tables 1, 2, and 3.

[0095] Table 1 System Objectives of the Excitation Source for the Front Panel:

[0096]

[0097] Table 2 System Objectives of Front Panel Transfer Path:

[0098]

[0099]

[0100] Table 3 System Objectives of Front Panel Response System:

[0101]

[0102]

[0103] In this embodiment, the transmitted noise at the excitation point of the front bulkhead is decomposed according to the excitation source, transmission path, and response system, and the normal vibration amplitude, normal surface stiffness, and normal noise transfer function of the eight excitation points are obtained.

[0104] In one specific embodiment, in order to improve the reliability of the obtained normal vibration amplitude, normal surface stiffness and normal noise transfer function of the excitation point, a vehicle sample can be produced for testing, thereby obtaining the reliability of the actual corresponding normal vibration amplitude, normal surface stiffness and normal noise transfer function of the excitation point.

[0105] In another specific embodiment, due to the similarity of the vehicle's structure, data can be collected from the excitation points of existing vehicles, and then the normal vibration amplitude, normal surface stiffness, and normal noise transfer function of the excitation points of the theoretical target vehicle can be obtained through function fitting.

[0106] In a preferred embodiment, in step S103, in order to determine the point noise of each excitation point according to the normal vibration amplitude, normal surface stiffness, and normal noise transfer function, firstly, a noise sound pressure calculation formula is constructed; then, according to the normal vibration amplitude, normal surface stiffness, and normal noise transfer function, the point noise of each excitation point is determined by the noise sound pressure calculation formula.

[0107] The formula for calculating noise sound pressure is as follows:

[0108]

[0109] Among them, P ij E represents the point noise at the j-th excitation point of the i-th plate. ij Let A be the normal surface stiffness of the j-th excitation point of the i-th plate. ij Let NTF be the normal vibration amplitude of the j-th excitation point of the i-th plate. ij Let f be the normal noise transfer function of the j-th excitation point of the i-th block, and f be the center frequency.

[0110] In a preferred embodiment, in step S104, in order to determine the total noise of the vehicle model based on multiple point noises by cumulative superposition, such as... Figure 12 As shown, Figure 12 A flowchart illustrating an embodiment of determining the total noise of a vehicle model provided by the present invention includes:

[0111] Step S141: Construct the formula for calculating the noise of the plate components;

[0112] Step S142: Based on the noise at multiple points, determine the noise of multiple boards using the board noise calculation formula;

[0113] Step S143: Construct the total noise calculation formula;

[0114] Step S144: Based on the panel noise of multiple panels, determine the total noise of the vehicle model using the total noise calculation formula.

[0115] In this embodiment, firstly, a formula for calculating panel noise is constructed; then, based on the noise at multiple points, the panel noise of multiple panels is determined using the panel noise calculation formula; next, a formula for calculating total noise is constructed; and based on the panel noise of multiple panels, the total noise of the vehicle model is determined using the total noise calculation formula.

[0116] In this embodiment, based on the acquisition of all point noise, a preliminary data integration of point noise is achieved by constructing a plate noise calculation formula to obtain the plate noise of each plate, thus avoiding data disorder; by constructing a total noise calculation formula, the plate noise of multiple plates is accumulated and superimposed to determine the total noise of the vehicle model.

[0117] As a preferred embodiment, the formula for calculating board noise is:

[0118]

[0119] The formula for calculating total noise is:

[0120]

[0121] Where, N i Let P be the board noise of the i-th board. 总 This represents the total noise.

[0122] In one specific embodiment, the in-vehicle noise caused by each panel is calculated separately, and then the noise caused by each panel is calculated by energy synthesis method to simplify the calculation of the overall vehicle noise.

[0123] like Figure 13 As shown, Figure 13 This is a flowchart illustrating an embodiment of the present invention for calculating in-vehicle noise. Taking the front bulkhead as an example, the normal vibration amplitude and normal surface stiffness of the first excitation point of the front bulkhead are first obtained, and then the normal excitation force of the first excitation point of the front bulkhead is determined. Then, the normal excitation force and the normal noise transfer function are combined to obtain the in-vehicle noise caused by the first excitation point of the front bulkhead.

[0124] Similarly, it is possible to determine the in-vehicle noise caused by all other excitation points of the front bulkhead, and then, by cumulative superposition, determine the in-vehicle noise caused by the front bulkhead as a single component.

[0125] Similarly, the method used to determine the interior noise of the front bulkhead can also determine the interior noise caused by other panels of the vehicle, and then the interior noise of the whole vehicle can be determined by cumulative summation.

[0126] By transforming vehicle research into data analysis of excitation points of the vehicle model, existing data resources can be effectively integrated and utilized. Based on the normal vibration amplitude, normal surface stiffness, and normal noise transfer function of the excitation point, the point noise of each excitation point is determined, and the total noise of the vehicle model is determined by cumulative superposition. This enables the quantitative representation of the noise of the vehicle model, and by controlling the noise, NVH performance analysis of the vehicle can be performed in advance, improving the controllability of vehicle development nodes and shortening the vehicle development cycle.

[0127] The present invention also provides an in-vehicle device, comprising: a processor and a memory; the memory storing a computer-readable program executable by the processor;

[0128] When the processor executes a computer-readable program, it implements the steps in the vehicle noise calculation method described above.

[0129] The present invention also provides a vehicle including the vehicle-mounted equipment as described above.

[0130] In summary, the above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for calculating vehicle noise, characterized in that, include: Obtain multiple excitation points corresponding to the vehicle model; The normal vibration amplitude, normal surface stiffness, and normal noise transfer function are obtained for each excitation point. A formula for calculating noise sound pressure is constructed, and the formula for calculating noise sound pressure is as follows: in, The point noise at the j-th excitation point of the i-th plate. The normal surface stiffness of the j-th excitation point of the i-th plate is... The normal vibration amplitude of the j-th excitation point of the i-th plate. Let f be the normal noise transfer function of the j-th excitation point of the i-th plate, and f be the center frequency; Based on the normal vibration amplitude, the normal surface stiffness, and the normal noise transfer function, the point noise at each excitation point is determined using the noise sound pressure calculation formula. A formula for calculating the noise of sheet metal components is constructed, and the formula for calculating the noise of sheet metal components is as follows: in, The noise of the i-th board component; Based on the noise at multiple points, the noise of multiple plates is determined using the plate noise calculation formula. The formula for calculating total noise is as follows: , The total noise; The total noise of the vehicle model is determined based on the noise of the multiple panels using the total noise calculation formula.

2. The vehicle noise calculation method according to claim 1, characterized in that, The acquisition of multiple stimulus points corresponding to the vehicle model includes: The vehicle model is divided into blocks to obtain multiple panels; According to the preset selection rules, excitation points are selected for the multiple plates respectively to obtain the corresponding multiple excitation points.

3. The vehicle noise calculation method according to claim 2, characterized in that, The plurality of panels include a front bulkhead, a windshield, a floor, a roof panel, a front door panel, a rear door panel, a rear windshield, a rear bulkhead, and side panels.

4. The vehicle noise calculation method according to claim 1, characterized in that, The process of obtaining the normal vibration amplitude, normal surface stiffness, and normal noise transfer function for each excitation point includes: The transmitted noise at each excitation point is decomposed according to the excitation source, transmission path, and response system. Based on the excitation source, the normal vibration amplitude of each excitation point is obtained; Based on the transmission path, the normal surface stiffness of each excitation point is obtained respectively; Based on the response system, the normal noise transfer function of each excitation point is obtained.

5. A vehicle-mounted device, characterized in that, include: Processor and memory; The memory stores a computer-readable program that can be executed by the processor; When the processor executes the computer-readable program, it implements the steps in the vehicle noise calculation method as described in any one of claims 1-4.

6. A vehicle, characterized in that, Including the vehicle-mounted equipment as described in claim 5.

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