Vehicle NVH (Noise Vibration and Harshness) performance development method and device, equipment and medium

Abstract

The invention discloses a vehicle NVH performance development method, device and equipment and a medium, and belongs to the technical field of vehicles. The method comprises the steps that excitation source data of a power assembly of a first target vehicle model and an NVH transfer function of a second target vehicle model are obtained, and the excitation source data comprise noise source data and / or vibration source data; according to the excitation source data and the NVH transfer function, determining in-vehicle NVH data of the vehicle type to be developed; inputting the NVH data in the vehicle into a pre-established subjective evaluation test bed, and obtaining a subjective score of noise and / or vibration output by a user based on the subjective evaluation test bed; and if the subjective score is greater than or equal to a preset score threshold, taking the NVH transfer function as a development target to perform NVH performance development on the to-be-developed vehicle type. According to the method, the NVH performance of the real vehicle of the vehicle type to be developed meets the requirement, and the development quality and efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a vehicle NVH performance development method, device, equipment and medium. Background Art

[0002] NVH (Noise, Vibration, Harshness) performance mainly refers to the noise, vibration and harshness generated by the vehicle during operation, which is an important indicator for measuring vehicle comfort. The study of NVH performance covers the vibration isolation of the automotive powertrain suspension system and the study of engine intake and exhaust noise, and improves ride comfort by improving the vibration condition of the excitation source or controlling the transmission of vibration noise.

[0003] At present, when developing NVH performance, the NVH performance data of competing vehicles will be directly used as the NVH performance development target of the model to be developed, so that the NVH performance of the model to be developed is the same as that of the competing vehicle. However, the model to be developed is different from the competing vehicle in terms of structural design such as powertrain. If the NVH performance data of competing vehicles is used as the NVH performance development target of the model to be developed, the NVH performance of the actual vehicle will often fail to meet the requirements after the model to be developed is produced. Summary of the invention

[0004] In view of the above problems, the present invention is proposed to provide a vehicle NVH performance development method, device, equipment and medium that solve the above problems. The NVH performance data of competing models or benchmark models will be subjectively evaluated. Only when the subjective evaluation is qualified can the NVH performance of the model to be developed according to the NVH performance data of the competing models or benchmark models, so that the NVH performance of the actual vehicle of the model to be developed meets the requirements, thereby improving the development quality and efficiency.

[0005] In a first aspect, the present invention provides a vehicle NVH performance development method, the method comprising:

[0006] Acquire excitation source data of a powertrain of a first target vehicle model and an NVH transfer function of a second target vehicle model, wherein the powertrain of the first target vehicle model is the same as the powertrain of the vehicle model to be developed, and the second target vehicle model is a competitive vehicle model or a benchmark vehicle model, and the excitation source data includes noise source data and / or vibration source data;

[0007] Determining in-vehicle NVH data of the vehicle model to be developed according to the excitation source data and the NVH transfer function;

[0008] Inputting the in-vehicle NVH data into a pre-built subjective evaluation test bench, and obtaining a user's subjective score of noise and / or vibration based on the output of the subjective evaluation test bench;

[0009] If the subjective score is greater than or equal to a preset score threshold, the NVH transfer function is used as a development target to develop the NVH performance of the vehicle model to be developed.

[0010] Optionally, determining the in-vehicle NVH data of the vehicle model to be developed according to the excitation source data and the NVH transfer function includes:

[0011] If the excitation source data includes near-field noise and suspension point output force, and the NVH transfer function includes an air transfer function and a noise transfer function, then the in-vehicle noise data in the in-vehicle NVH data of the vehicle model to be developed is determined based on the near-field noise, the air transfer function, the suspension point output force and the noise transfer function.

[0012] Optionally, determining the in-vehicle noise data in the in-vehicle NVH data of the vehicle model to be developed according to the near-field noise, the air transfer function, the suspension point output force and the noise transfer function includes:

[0013] The in-vehicle noise data is determined according to the following formula:

[0014]

[0015] Among them, N 噪 represents the in-vehicle noise data, N 近 represents the near-field noise, G 空 represents the air transfer function, F i represents the output force of the ith suspension point, G 噪 represents the noise transfer function, and n represents the number of suspension points.

[0016] Optionally, determining the in-vehicle NVH data of the vehicle model to be developed according to the excitation source data and the NVH transfer function includes:

[0017] If the excitation source data includes suspension vibration data, and the NVH transfer function includes a vibration transfer function, then the in-vehicle vibration data in the in-vehicle NVH data of the vehicle model to be developed is determined according to the suspension vibration data and the vibration transfer function.

[0018] Optionally, determining the in-vehicle vibration data in the in-vehicle NVH data of the vehicle model to be developed according to the suspension vibration data and the vibration transfer function includes:

[0019] The in-vehicle vibration data is determined according to the following formula:

[0020]

[0021] Among them, N 振represents the in-vehicle vibration data, N 悬i represents the i-th suspension vibration data, G 振 represents the vibration transfer function, and n represents the number of suspension points.

[0022] Optionally, after obtaining the user's subjective rating, the method further includes:

[0023] If the subjective score is less than the score threshold, the NVH transfer function is corrected and the process returns to the step of determining the in-vehicle NVH data of the vehicle model to be developed based on the excitation source data and the NVH transfer function until the subjective score is greater than or equal to the score threshold.

[0024] In a second aspect, the present invention provides a vehicle NVH performance development device, the device comprising:

[0025] an acquisition module, used to acquire excitation source data of a powertrain of a first target vehicle model and an NVH transfer function of a second target vehicle model, wherein the powertrain of the first target vehicle model is the same as the powertrain of the vehicle model to be developed, and the second target vehicle model is a competitive vehicle model or a benchmark vehicle model, and the excitation source data includes noise source data and / or vibration source data;

[0026] A determination module, used for determining the in-vehicle NVH data of the vehicle model to be developed according to the excitation source data and the NVH transfer function;

[0027] An input module, used to input the in-vehicle NVH data into a pre-built subjective evaluation test bench, and obtain a user's subjective score of noise and / or vibration based on the output of the subjective evaluation test bench;

[0028] A development module is used to use the NVH transfer function as a development target if the subjective score is greater than or equal to a preset score threshold, so as to develop the NVH performance of the vehicle model to be developed.

[0029] Optionally, the device further comprises:

[0030] A correction module is configured to correct the NVH transfer function if the subjective score is less than the score threshold until the subjective score is greater than or equal to the score threshold.

[0031] Optionally, the determination module includes:

[0032] The first determination unit is used to determine the in-vehicle noise data in the in-vehicle NVH data of the vehicle model to be developed according to the near-field noise, the air transfer function, the suspension point output force and the noise transfer function if the excitation source data includes near-field noise and suspension point output force, and the NVH transfer function includes an air transfer function and a noise transfer function.

[0033] Optionally, the first determining unit is further configured to:

[0034] The in-vehicle noise data is determined according to the following formula:

[0035]

[0036] Among them, N 噪 represents the in-vehicle noise data, N 近 represents the near-field noise, G 空 represents the air transfer function, F i represents the output force of the ith suspension point, G 噪 represents the noise transfer function, and n represents the number of suspension points.

[0037] Optionally, the determination module includes:

[0038] The second determining unit is configured to determine the in-vehicle vibration data in the in-vehicle NVH data of the vehicle model to be developed according to the suspension vibration data and the vibration transfer function if the excitation source data includes suspension vibration data and the NVH transfer function includes a vibration transfer function.

[0039] Optionally, the second determining unit is further used for:

[0040] The in-vehicle vibration data is determined according to the following formula:

[0041]

[0042] Among them, N 振 represents the in-vehicle vibration data, N 悬i represents the i-th suspension vibration data, G 振 represents the vibration transfer function, and n represents the number of suspension points.

[0043] In a third aspect, the present invention provides an electronic device comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method described in the first aspect by executing the computer instructions.

[0044] In a fourth aspect, the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method described in the first aspect.

[0045] The technical solution provided in the embodiments of the present invention has at least the following technical effects or advantages:

[0046] The embodiments of the present invention provide a vehicle NVH performance development method, device, equipment and medium, which obtain excitation source data of a powertrain of a first target vehicle model and an NVH transfer function of a second target vehicle model, wherein the powertrain of the first target vehicle model is the same as the powertrain of a vehicle model to be developed, and the second target vehicle model is a competitive vehicle model or a benchmark vehicle model, and the excitation source data includes noise source data and / or vibration source data. The mathematical expression of the excitation source of noise or vibration of the vehicle model to be developed and the transmission path of the noise or vibration is first obtained; according to the excitation source data and the NVH transfer function, the in-vehicle NVH data of the vehicle model to be developed is determined, and the vehicle model to be developed is predicted under the current excitation source and transmission path. The possible NVH performance; input the in-vehicle NVH data into the pre-built subjective evaluation test bench, and obtain the user's subjective score of noise and / or vibration based on the output of the subjective evaluation test bench, and express the intuitive feeling of the user brought by the noise or vibration that may be generated in the model to be developed through the subjective score; if the subjective score is greater than or equal to the preset score threshold, the NVH transfer function is used as the development target to develop the NVH performance of the model to be developed. When the user is relatively satisfied, the NVH transfer function of the competing model or benchmark model is used to develop the NVH performance of the model to be developed, so that the NVH performance of the actual vehicle of the model to be developed meets the requirements, thereby improving the development quality and efficiency.

[0047] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0049] Figure 1 is a flow chart of a vehicle NVH performance development method provided by an embodiment of the present invention;

[0050] Figure 2 It is a structural block diagram of a vehicle NVH performance development device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0051] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0052] Figure 1is a flow chart of a vehicle NVH performance development method provided by an embodiment of the present invention, such as Figure 1 As shown, the method includes:

[0053] Step S110: Acquire excitation source data of the powertrain of the first target vehicle model and the NVH transfer function of the second target vehicle model.

[0054] Among them, the powertrain of the first target model is the same as the powertrain of the model to be developed, and the second target model is a competitive model or a benchmark model.

[0055] In this embodiment, the noise inside the car mainly comes from three sources: powertrain noise, tire noise and wind noise. Powertrain noise includes engine noise, transmission noise, drive shaft noise, intake noise, exhaust noise, HVAC noise and fan noise. When the car is idling, slowing down and accelerating, powertrain noise is the main source of noise inside the car. The main source of vibration inside the car is also powertrain vibration.

[0056] In this embodiment, since the actual vehicle of the model to be developed may not have been produced yet, the excitation source data of the powertrain of other models equipped with the same powertrain can be used as the excitation source data of the powertrain of the model to be developed. In order to make the NVH performance of the model to be developed equal to or even exceed that of the competitive model or benchmark model, the NVH transfer function of the competitive model or benchmark model can be used as a reference when developing the NVH transfer function of the model to be developed.

[0057] In this embodiment, the excitation source data includes excitation source data under various working conditions, and the NVH transfer function includes the NVH transfer function under various working conditions. The excitation source data includes noise source data and / or vibration source data; the NVH transfer function is a relationship function between the noise source and vibration source of the powertrain and the ear noise and seat vibration of the cockpit, and may include an air transfer function, a noise transfer function, or a vibration transfer function. The working conditions include a rapid acceleration condition, an acceleration condition, an idling condition, and a deceleration condition.

[0058] Step S120: Determine the in-vehicle NVH data of the vehicle model to be developed according to the excitation source data and the NVH transfer function.

[0059] In this embodiment, obtaining the excitation source data means obtaining the source of the vibration or noise, and obtaining the NVH transfer function is equivalent to obtaining the transmission path of the vibration or noise, so the in-car NVH data of the vehicle model to be developed, that is, the noise or vibration data in the car, can be determined.

[0060] Optionally, step S120 includes step S1201 and step S1202.

[0061] Step S1201: If the excitation source data includes near-field noise and suspension point output force, and the NVH transfer function includes an air transfer function and a noise transfer function, then the in-vehicle noise data in the in-vehicle NVH data of the vehicle model to be developed is determined according to the near-field noise, the air transfer function, the suspension point output force and the noise transfer function.

[0062] In this embodiment, the near-field noise is the noise near the powertrain, that is, the noise source that generates noise in the car; the suspension point is the connection point between the powertrain and the car body, and the suspension point output force is the force output by the powertrain to the car body through the suspension point. The transfer function refers to the ratio of the Laplace transform (or z-transform) of the linear system response (i.e., output) quantity to the Laplace transform of the excitation (i.e., input) quantity under zero initial conditions. The air transfer function is a mathematical expression of the relationship between the sound pressure of the sound source (i.e., input quantity) and the sound pressure (i.e., output quantity) at the driver's ear after the sound source is transmitted through the air. The noise transfer function is a mathematical expression of the relationship between the sound pressure at the driver's ear and the unit load of the excitation point under the action of unit force.

[0063] Therefore, the near-field noise and the output force of the suspension point are equivalent to the input of the excitation point, and the air transfer function and the noise transfer function are equivalent to mathematical expressions. Therefore, the noise data inside the car, that is, the output, can be obtained based on them, and then the noise data inside the car can be used as the noise data inside the car for the model to be developed.

[0064] Optionally, step S1201 includes:

[0065] The interior noise data is determined according to the following formula:

[0066]

[0067] Among them, N 噪 Indicates the noise data inside the car, N 近 represents the near-field noise, G 空 represents the air transfer function, F i represents the output force of the ith suspension point, G 噪 represents the noise transfer function, and n represents the number of suspension points.

[0068] In this embodiment, N 近 *G 空 What is obtained is the near-field noise transmitted through the air to the driver's ear. What is obtained is the sum of the noise transmitted from each suspension point to the driver's ear through the car body. The sum of the two is the total noise at the driver's ear, that is, the in-car noise data.

[0069] Step S1202: If the excitation source data includes suspension vibration data, and the NVH transfer function includes a vibration transfer function, then determine the in-vehicle vibration data in the in-vehicle NVH data of the vehicle model to be developed according to the suspension vibration data and the vibration transfer function.

[0070] In this embodiment, the suspension vibration data may include the vibration amount or vibration acceleration of the suspension point. The vibration transfer function is a mathematical expression of the relationship between the vibration at the suspension point and the vibration at the seat in the vehicle. Therefore, the vibration data at the seat in the vehicle can be determined based on the vibration data of the suspension point and the vibration transfer function.

[0071] Optionally, step S1202 includes:

[0072] Determine the in-vehicle vibration data according to the following formula:

[0073]

[0074] Among them, N 振 Indicates the in-vehicle vibration data, N 悬i represents the i-th suspension vibration data, G 振 represents the vibration transfer function, and n represents the number of suspension points.

[0075] In this embodiment, N 悬i *G 振 is the vibration transmitted from the ith suspension point to the seat. The vibrations transmitted from all suspension points to the seat are added together to obtain the in-vehicle vibration data.

[0076] Step S130: input the in-vehicle NVH data into a pre-built subjective evaluation test bench, and obtain a user's subjective score of noise and / or vibration based on the output of the subjective evaluation test bench.

[0077] In this embodiment, a subjective evaluation test bench can be pre-constructed. The subjective evaluation test bench can include a microphone and a vibrating seat. The microphone can be used to play the in-car noise data to simulate the in-car noise situation; the vibrating seat can be controlled to vibrate according to the in-car vibration data to simulate the in-car seat vibration situation; and then the user is allowed to sit on the vibrating seat with the microphone placed next to the user's ear, so that the user can evaluate the vibration and noise felt. The evaluation can adopt a 10-point scoring mode.

[0078] It should be noted that in this embodiment, if the noise subjective evaluation test is performed alone, the vibrating seat is controlled not to vibrate, and the user only makes a subjective evaluation of the noise situation. If the vibration subjective evaluation test is performed alone, the microphone does not play any sound, and only the vibrating seat is controlled to vibrate, and the user only makes a subjective evaluation of the vibration situation. Of course, noise and vibration can be tested at the same time, and the specific test is determined according to actual needs.

[0079] Step S140: If the subjective score is greater than or equal to the preset score threshold, the NVH transfer function is used as a development target to develop the NVH performance of the vehicle model to be developed.

[0080] In this embodiment, if the subjective score is greater than or equal to the preset score threshold, it means that the subjective evaluation is relatively satisfactory, and the vehicle model to be developed is developed according to the current powertrain and NVH transfer function, so that the NVH performance of the actual vehicle of the vehicle model to be developed meets user requirements.

[0081] Optionally, after step S130, the method further includes step S150.

[0082] Step S150: If the subjective score is less than the score threshold, the NVH transfer function is corrected, and the process returns to the step of determining the in-vehicle NVH data of the vehicle model to be developed based on the excitation source data and the NVH transfer function, until the subjective score is greater than or equal to the score threshold.

[0083] In this embodiment, if the subjective score is less than the score threshold, it means that the subjective evaluation is not satisfactory, and the noise and vibration in the vehicle to be developed may be relatively large, which will cause a bad user experience. Therefore, the NVH transfer function of the competitive model or benchmark model cannot be used to develop the NVH performance of the vehicle to be developed. Instead, the NVH transfer function needs to be corrected. Specifically, the in-vehicle noise data or in-vehicle vibration data can be analyzed, and the in-vehicle noise data or in-vehicle vibration data can be converted into a curve, and then the frequency in the curve can be analyzed to determine the frequency point that needs to be adjusted, so as to realize the correction of the NVH transfer function. After the correction, the subjective evaluation test is carried out again until the subjective score is greater than or equal to the score threshold.

[0084] Among them, after correcting the NVH transfer function, the body structure will be optimized according to the corrected NVH transfer function, the design of the engine and transmission system will be improved, and more efficient sound insulation materials will be used to improve the NVH performance of the vehicle model to be developed.

[0085] In this embodiment, through the subjective evaluation in the vehicle NVH performance development method of this embodiment, the interior noise and vibration conditions of the vehicle model to be developed can be intuitively evaluated, and a plan can be made before the vehicle model to be developed is developed. By correcting the NVH transfer function, the subjective evaluation can reach the target standard, and the corrected NVH transfer function can be determined as the development target, and then the development target is broken down into details in the development process.

[0086] Based on the same inventive concept, an embodiment of the present invention further provides a vehicle NVH performance development device, Figure 2 is a structural block diagram of a vehicle NVH performance development device provided by an embodiment of the present invention, such as Figure 2As shown, the device 200 includes an acquisition module 201 , a determination module 202 , an input module 203 and a development module 204 .

[0087] An acquisition module 201 is used to acquire excitation source data of a powertrain of a first target vehicle model and an NVH transfer function of a second target vehicle model, wherein the powertrain of the first target vehicle model is the same as the powertrain of the vehicle model to be developed, and the second target vehicle model is a competitor vehicle model or a benchmark vehicle model, and the excitation source data includes noise source data and / or vibration source data;

[0088] A determination module 202 is used to determine the in-vehicle NVH data of the vehicle model to be developed according to the excitation source data and the NVH transfer function;

[0089] An input module 203 is used to input the in-vehicle NVH data into a pre-built subjective evaluation test bench, and obtain a user's subjective score of noise and / or vibration based on the output of the subjective evaluation test bench;

[0090] The development module 204 is configured to use the NVH transfer function as a development target to develop the NVH performance of the vehicle model to be developed if the subjective score is greater than or equal to a preset score threshold.

[0091] Optionally, the determination module 202 includes:

[0092] The first determination unit is used to determine the in-vehicle noise data in the in-vehicle NVH data of the vehicle model to be developed based on the near-field noise, air transfer function, suspension point output force and noise transfer function if the excitation source data includes near-field noise and suspension point output force, and the NVH transfer function includes air transfer function and noise transfer function.

[0093] Optionally, the first determining unit is further configured to:

[0094] The interior noise data is determined according to the following formula:

[0095]

[0096] Among them, N 噪 Indicates the noise data inside the car, N 近 represents the near-field noise, G 空 represents the air transfer function, F i represents the output force of the ith suspension point, G 噪 represents the noise transfer function, and n represents the number of suspension points.

[0097] Optionally, the determining module 202 further includes:

[0098] The second determining unit is used to determine the in-vehicle vibration data in the in-vehicle NVH data of the vehicle model to be developed according to the suspension vibration data and the vibration transfer function if the excitation source data includes suspension vibration data and the NVH transfer function includes the vibration transfer function.

[0099] Optionally, the second determining unit is further used for:

[0100] Determine the in-vehicle vibration data according to the following formula:

[0101]

[0102] Among them, N 振 Indicates the in-vehicle vibration data, N 悬i represents the i-th suspension vibration data, G 振 represents the vibration transfer function, and n represents the number of suspension points.

[0103] Optionally, the device 200 further includes:

[0104] The correction module is used for correcting the NVH transfer function if the subjective score is less than the score threshold, until the subjective score is greater than or equal to the score threshold.

[0105] It can be understood that the device provided in the above embodiment is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0106] An embodiment of the present invention further provides an electronic device, which may include a processor and a memory, wherein the processor and the memory may be communicatively connected to each other via a bus or other means.

[0107] The processor may be a central processing unit (CPU) or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0108] The memory may include a large capacity memory for data or instructions. By way of example and not limitation, the memory may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. Where appropriate, the memory may include a removable or non-removable (or fixed) medium. Where appropriate, the memory may be inside or outside the electronic device. In a particular embodiment, the memory may be a non-volatile solid-state memory.

[0109] In one example, the memory may be a read-only memory (ROM). In one example, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0110] The processor implements any one of the vehicle NVH performance development methods in the above embodiments by reading and executing computer program instructions stored in the memory.

[0111] In one example, the electronic device may further include a communication interface and a bus. Among them, the processor, memory, and communication interface are connected through a bus and communicate with each other. The communication interface is mainly used to realize the communication between the modules, devices, units and / or devices in the embodiment of the present application. Where appropriate, the bus may include one or more buses.

[0112] In addition, in combination with the vehicle NVH performance development method in the above embodiments, the embodiment of the present invention can provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by a processor, any one of the vehicle NVH performance development methods in the above embodiments is implemented.

[0113] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0114] The embodiments of the present invention provide a vehicle NVH performance development method, device, equipment and medium, which obtain excitation source data of a powertrain of a first target vehicle model and an NVH transfer function of a second target vehicle model, wherein the powertrain of the first target vehicle model is the same as the powertrain of a vehicle model to be developed, and the second target vehicle model is a competitive vehicle model or a benchmark vehicle model, and the excitation source data includes noise source data and / or vibration source data. The mathematical expression of the excitation source of noise or vibration of the vehicle model to be developed and the transmission path of the noise or vibration is first obtained; according to the excitation source data and the NVH transfer function, the in-vehicle NVH data of the vehicle model to be developed is determined, and the vehicle model to be developed is predicted under the current excitation source and transmission path. The possible NVH performance; input the in-vehicle NVH data into the pre-built subjective evaluation test bench, and obtain the user's subjective score of noise and / or vibration based on the output of the subjective evaluation test bench, and express the intuitive feeling of the user brought by the noise or vibration that may be generated in the model to be developed through the subjective score; if the subjective score is greater than or equal to the preset score threshold, the NVH transfer function is used as the development target to develop the NVH performance of the model to be developed. When the user is relatively satisfied, the NVH transfer function of the competing model or benchmark model is used to develop the NVH performance of the model to be developed, so that the NVH performance of the actual vehicle of the model to be developed meets the requirements, thereby improving the development quality and efficiency.

[0115] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0116] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the intention that the claimed invention requires more features than those explicitly recited in each claim. More specifically, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Therefore, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, with each claim itself serving as a separate embodiment of the present invention.

[0117] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "one" or "an" preceding a component does not exclude the presence of a plurality of such components. The present invention may be implemented by means of hardware comprising a number of different components and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc., does not indicate any order. These words may be interpreted as names.

Claims

1. A vehicle NVH performance development method, characterized in that: The method comprises: Acquire excitation source data of a powertrain of a first target vehicle model and an NVH transfer function of a second target vehicle model, wherein the powertrain of the first target vehicle model is the same as the powertrain of the vehicle model to be developed, and the second target vehicle model is a competitive vehicle model or a benchmark vehicle model, and the excitation source data includes noise source data and / or vibration source data; Determining in-vehicle NVH data of the vehicle model to be developed according to the excitation source data and the NVH transfer function; Inputting the in-vehicle NVH data into a pre-built subjective evaluation test bench, and obtaining a user's subjective score of noise and / or vibration based on the output of the subjective evaluation test bench; If the subjective score is greater than or equal to a preset score threshold, the NVH transfer function is used as a development target to develop the NVH performance of the vehicle model to be developed.

2. The vehicle NVH performance development method according to claim 1, characterized in that: Determining the in-vehicle NVH data of the vehicle model to be developed according to the excitation source data and the NVH transfer function includes: If the excitation source data includes near-field noise and suspension point output force, and the NVH transfer function includes an air transfer function and a noise transfer function, then the in-vehicle noise data in the in-vehicle NVH data of the vehicle model to be developed is determined based on the near-field noise, the air transfer function, the suspension point output force and the noise transfer function.

3. The vehicle NVH performance development method according to claim 2, characterized in that: Determining the in-vehicle noise data in the in-vehicle NVH data of the vehicle model to be developed according to the near-field noise, the air transfer function, the suspension point output force and the noise transfer function, including: The in-vehicle noise data is determined according to the following formula: Among them, N 噪 represents the in-vehicle noise data, N 近 represents the near-field noise, G 空 represents the air transfer function, F i represents the output force of the ith suspension point, G 噪 represents the noise transfer function, and n represents the number of suspension points.

4. The vehicle NVH performance development method according to claim 1, characterized in that: Determining the in-vehicle NVH data of the vehicle model to be developed according to the excitation source data and the NVH transfer function includes: If the excitation source data includes suspension vibration data, and the NVH transfer function includes a vibration transfer function, then the in-vehicle vibration data in the in-vehicle NVH data of the vehicle model to be developed is determined according to the suspension vibration data and the vibration transfer function.

5. The vehicle NVH performance development method according to claim 4, characterized in that: The step of determining the in-vehicle vibration data in the in-vehicle NVH data of the vehicle model to be developed according to the suspension vibration data and the vibration transfer function comprises: The in-vehicle vibration data is determined according to the following formula: Among them, N 振 represents the in-vehicle vibration data, N 悬i represents the i-th suspension vibration data, G 振 represents the vibration transfer function, and n represents the number of suspension points.

6. The vehicle NVH performance development method according to claim 1, characterized in that: After obtaining the user's subjective rating, the method further includes: If the subjective score is less than the score threshold, the NVH transfer function is corrected and the process returns to the step of determining the in-vehicle NVH data of the vehicle model to be developed based on the excitation source data and the NVH transfer function until the subjective score is greater than or equal to the score threshold.

7. A vehicle NVH performance development device, characterized in that: The device comprises: an acquisition module, used to acquire excitation source data of a powertrain of a first target vehicle model and an NVH transfer function of a second target vehicle model, wherein the powertrain of the first target vehicle model is the same as the powertrain of the vehicle model to be developed, and the second target vehicle model is a competitive vehicle model or a benchmark vehicle model, and the excitation source data includes noise source data and / or vibration source data; A determination module, used for determining the in-vehicle NVH data of the vehicle model to be developed according to the excitation source data and the NVH transfer function; An input module, used to input the in-vehicle NVH data into a pre-built subjective evaluation test bench, and obtain a user's subjective score of noise and / or vibration based on the output of the subjective evaluation test bench; A development module is used to use the NVH transfer function as a development target if the subjective score is greater than or equal to a preset score threshold, so as to develop the NVH performance of the vehicle model to be developed.

8. The vehicle NVH performance development device according to claim 7, characterized in that: The device also includes: A correction module is configured to correct the NVH transfer function if the subjective score is less than the score threshold until the subjective score is greater than or equal to the score threshold.

9. An electronic device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method according to any one of claims 1 to 6 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to cause the computer to execute the method according to any one of claims 1 to 6.

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