Vehicle acoustic package scheme design method and device, equipment and medium
By dividing the vehicle acoustic package into multiple parts acoustic areas, and performing simulation tests and evaluation function optimization, the problem of the acoustic package design in the prior art failing to take into account both acoustic performance and lightweight, achieving efficient vehicle noise control and weight reduction.
Patent Information
- Application Number
- CN202510343489.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2025-06-20
AI Technical Summary
The prior art fails to take into account both acoustic performance and lightweight design when designing vehicle acoustic packages, resulting in poor noise control effect of the vehicle and difficulty in accurately evaluating the specific contribution of the acoustic package to the acoustic performance of the vehicle.
By dividing the vehicle acoustic package into multiple parts acoustic areas, determining the components to be tested and their related parameters in each area, conducting simulation tests to predict the acoustic performance, selecting the components to be used to meet the preset conditions, and balancing the acoustic performance and quality through the preset evaluation function to generate the vehicle acoustic package solution.
It achieves the minimization of weight while meeting the acoustic performance requirements, realizes the lightweight of the acoustic package, and improves the overall actual performance of the acoustic package solution.
Smart Images
Figure CN120180746A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of vehicle acoustic packages, and particularly to a method and device, equipment, and medium for designing a vehicle acoustic package solution. Background Art
[0002] With the rapid development of the automotive industry, vehicle noise control has become one of the important factors for improving vehicle comfort and driving experience. The acoustic package, as a component that plays a key role in vehicle noise control, is mainly used for sound absorption and sound insulation to reduce the noise inside the vehicle.
[0003] When designing an acoustic package solution in related technologies, it mainly focuses on improving the sound insulation performance and sound absorption performance. Traditional acoustic package solution design methods mostly focus on the selection of materials and the enhancement of acoustic performance. Many patents and technical solutions enhance the function of the acoustic package by selecting sound-absorbing materials, sound-insulating materials, and optimizing the thickness.
[0004] However, in related technologies, the lightweight design is not considered while taking into account the performance of the acoustic package to optimize the overall vehicle performance. In addition, most related technologies are based on the design and optimization of the acoustic package structure under the condition of the whole vehicle, and usually analyze the effect of the acoustic package by taking the whole vehicle as a whole. Although this method can provide the overall effect of vehicle noise control, it often cannot accurately evaluate the specific contribution of the acoustic package to the vehicle acoustic performance. For example, the design of the acoustic package may interact with the design of other components such as glass, sheet metal, and seals, and the acoustic performance of these components will also have an important impact on the final acoustic effect, resulting in the actual performance of the acoustic package solution not meeting expectations. Summary of the Invention
[0005] In view of the above problems, a method and device, equipment, and medium for designing a vehicle acoustic package solution are proposed to overcome or at least partially solve the above problems, including:
[0006] A method for designing a vehicle acoustic package solution, the method includes:
[0007] Dividing the vehicle acoustic package into at least two component acoustic regions according to the position information of each component of the vehicle acoustic package;
[0008] Determining the components to be tested corresponding to each component acoustic region, and obtaining the relevant parameters of the components to be tested;
[0009] Performing a simulation test on the components to be tested according to the relevant parameters of the components to be tested to obtain the predicted acoustic performance values of the components to be tested;
[0010] Determine the parts to be adopted whose predicted acoustic performance values meet the preset conditions, and determine the target parts according to the preset evaluation function for the parts to be adopted whose acoustic performance and quality both meet the preset requirements;
[0011] Determine the acoustic package solution of the vehicle according to the target parts corresponding to each acoustic area of the parts.
[0012] Optionally, the step of performing simulation testing on the parts to be tested according to the relevant parameters of the parts to be tested to obtain the predicted acoustic performance values of the parts to be tested includes:
[0013] Determine the acoustic performance benchmark error value of the acoustic area of the parts corresponding to the parts to be tested, and perform simulation testing on the parts to be tested according to the relevant parameters of the parts to be tested to obtain the simulated acoustic performance value of the parts to be tested;
[0014] Obtain the predicted acoustic performance value of the parts to be tested according to the simulated acoustic performance value of the parts to be tested and the acoustic performance benchmark error value.
[0015] Optionally, the step of determining the acoustic performance benchmark error value of the acoustic area of the parts corresponding to the parts to be tested includes:
[0016] According to the vehicle model information, select corresponding part samples in the part database for the acoustic area of the parts corresponding to the parts to be tested, where the number of selected part samples for the acoustic area of the parts is at least two;
[0017] Perform acoustic performance testing on the part samples to obtain the acoustic performance values of the part samples, and perform simulation testing on the part samples according to the relevant parameters of the part samples to obtain the simulated acoustic performance values of the part samples;
[0018] Obtain the acoustic performance benchmark error value of the part samples according to the acoustic performance values and simulated acoustic performance values of the part samples.
[0019] Optionally, the step of determining the target parts according to the preset evaluation function for the parts to be adopted whose acoustic performance and quality both meet the preset requirements includes:
[0020] Solve through the preset evaluation function under the condition that the quality of the parts to be adopted is the numerator and the predicted acoustic performance value of the parts to be adopted is the denominator, and determine the parts to be adopted corresponding to the minimum value of the solved preset evaluation function value as the target parts.
[0021] Optionally, the solution is obtained under the condition that the quality of the component to be adopted is the numerator and the predicted acoustic performance value of the component to be adopted is the denominator through the preset evaluation function, and the component to be adopted corresponding to the minimum preset evaluation function value obtained by the solution is determined as the target component, including:
[0022] According to the component acoustic region corresponding to the component to be adopted, determine the quality weight coefficient and the predicted acoustic performance value weight coefficient of the component to be adopted;
[0023] Through the preset evaluation function, under the condition that the quality of the component to be adopted is the numerator and the predicted acoustic performance value of the component to be adopted is the denominator, solve based on the quality weight coefficient and the predicted acoustic performance value weight coefficient of the component to be adopted, and determine the component to be adopted corresponding to the minimum preset evaluation function value obtained by the solution as the target component.
[0024] Optionally, the component acoustic region is any one of the front bulkhead sound insulation pad region, the front carpet region, the rear section of the front carpet region, the wheelhouse sound insulation pad region, the rear carpet region, and the trunk carpet region.
[0025] Optionally, the relevant parameters at least include the coverage rate parameter, the material parameter, the thickness parameter, the density parameter, and the area parameter.
[0026] A vehicle acoustic package scheme design device, the device includes:
[0027] A component acoustic region division module, configured to divide the vehicle acoustic package into at least two component acoustic regions according to the position information of each component of the vehicle acoustic package;
[0028] A parameter acquisition module, configured to determine the component to be tested corresponding to each component acoustic region and acquire the relevant parameters of the component to be tested;
[0029] An acoustic performance predicted value determination module, configured to perform a simulation test on the component to be tested according to the relevant parameters of the component to be tested to obtain the predicted acoustic performance value of the component to be tested;
[0030] A target component determination module, configured to determine the component to be tested with the predicted acoustic performance meeting the preset conditions as the component to be adopted, and determine the component to be adopted with both the acoustic performance and the quality meeting the preset requirements as the target component according to the preset evaluation function;
[0031] An acoustic package scheme generation module, configured to determine the acoustic package scheme of the vehicle according to the target component corresponding to each component acoustic region.
[0032] An electronic device includes a processor, a memory, and a computer program stored on the memory and capable of running on the processor. When the computer program is executed by the processor, it implements the vehicle acoustic package design method as described above.
[0033] A computer-readable storage medium stores a computer program thereon. When the computer program is executed by a processor, it implements the vehicle acoustic package design method as described above.
[0034] The embodiments of the present invention have the following advantages:
[0035] In the embodiments of the present invention, by dividing the vehicle acoustic package into at least two component acoustic regions according to the position information of each component of the vehicle acoustic package; then determining the components to be tested corresponding to each component acoustic region and obtaining the relevant parameters of the components to be tested; and performing simulation tests on the components to be tested according to the relevant parameters of the components to be tested to obtain the predicted acoustic performance values of the components to be tested; thereby determining the components to be adopted whose predicted acoustic performance values meet the preset conditions, and determining the target components according to the preset evaluation function for the components to be adopted whose acoustic performance and quality both meet the preset requirements; and then determining the acoustic package scheme of the vehicle according to the target components corresponding to each component acoustic region, the acoustic package design is realized on the premise of balancing the quality and acoustic performance of the components, ensuring that while meeting the acoustic performance requirements, the weight can be minimized to the greatest extent and the lightweight of the acoustic package can be achieved; and by dividing the vehicle acoustic package into multiple component acoustic regions, each component can be optimized independently to ensure that the acoustic performance of each region meets the requirements and improve the overall actual performance of the acoustic package scheme. Description of the Drawings
[0036] In order to more clearly illustrate the technical solutions of the present invention, the drawings required to be used in the description of the present invention will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.
[0037] Figure 1 is a flowchart of the steps of a vehicle acoustic package design method provided by some embodiments of the present invention;
[0038] Figure 2 is an example diagram of the overall execution logic of the present invention provided by some embodiments of the present invention;
[0039] Figure 3 is a schematic structural diagram of a vehicle acoustic package design device provided by some embodiments of the present invention. Detailed Embodiments
[0040] To make the above objects, features, and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.
[0041] With the rapid development of the automotive industry, vehicle noise control has become one of the important factors in enhancing vehicle comfort and driving experience. The acoustic package, as a component that plays a key role in vehicle noise control, is mainly used for sound absorption and sound insulation to reduce the noise inside the vehicle.
[0042] When designing an acoustic package solution in the related art, it mainly focuses on improving the sound insulation performance and sound absorption performance. Traditional acoustic package design methods mostly focus on the selection of materials and the enhancement of acoustic performance. Many patents and technical solutions enhance the function of the acoustic package by selecting sound-absorbing materials, sound-insulating materials, and optimizing the thickness.
[0043] However, in the related art, it does not consider achieving lightweight design while taking into account the performance of the acoustic package to optimize the overall vehicle performance. In addition, most of the related art designs and optimizes the acoustic package structure based on the overall vehicle state, usually analyzing the effect of the acoustic package by taking the whole vehicle as a whole. Although this method can provide the overall effect of vehicle noise control, it often cannot accurately evaluate the specific contribution of the acoustic package to the overall vehicle acoustic performance. For example, the design of the acoustic package may interact with the designs of other components such as glass, sheet metal, and seals, and the acoustic performance of these components will also have an important impact on the final acoustic effect, resulting in the actual performance of the acoustic package solution not meeting expectations.
[0044] In the embodiments of the present invention, based on the core technical concept of dividing the acoustic package into different component acoustic regions and comprehensively evaluating the mass and acoustic performance of each component, the design method of the vehicle acoustic package solution in the related art is improved. The present invention will be described in detail below with reference to the accompanying drawings:
[0045] Refer to Figure 1 , which shows a flowchart of the steps of a method for designing a vehicle acoustic package solution provided by some embodiments of the present invention, and specifically may include the following steps:
[0046] Step 101, divide the vehicle acoustic package into at least two component acoustic regions according to the position information of each component of the vehicle acoustic package;
[0047] In specific implementation, the vehicle acoustic package is both the main means to reduce vehicle noise and the goal of lightweight weight reduction. However, due to the market positioning and performance goals of the vehicle, system analysis is required. Taking the range-extended vehicle as an example, the range extender and the front motor are generally arranged in the front engine compartment, and the rear electric drive is arranged on the rear subframe. The main noise of the range extender is mainly in the medium and low frequencies, the electric drive is mainly in the medium and high frequencies, and the road noise is also mainly in the medium and high frequencies, all of which will propagate through the air path. Therefore, the acoustic performance of the range-extended vehicle includes sound insulation performance and sound absorption performance.
[0048] Therefore, as Figure 2 shown, the main performance index STL (sound transmission loss) of the acoustic package can be determined, that is, the relevant parameters affecting the performance of the acoustic package can include: coverage rate parameter: C, material parameter: M, thickness parameter: T, density parameter: ρ, area parameter: A;
[0049] Furthermore, according to the position information of each component of the vehicle acoustic package, the vehicle acoustic package can be divided into at least two component acoustic regions. For example, it can be divided into 6 parts including the front bulkhead sound insulation pad A1, the front carpet A2, the rear section of the front carpet A3, the wheelhouse sound insulation pad A4, the rear carpet A5, and the trunk carpet A6. Specifically, it can be determined according to the actual structure of the vehicle, so as to decompose the acoustic performance of the vehicle acoustic package into the acoustic performance of the component acoustic regions, that is, the acoustic performance values of the 6 component acoustic regions, and decompose the weight of the vehicle acoustic package into the sum of the component weights; in order to subsequently evaluate and select components for different component acoustic regions respectively to ensure the subsequent actual performance of the acoustic package solution.
[0050] Step 102, determine the components to be tested corresponding to each of the component acoustic regions, and obtain the relevant parameters of the components to be tested;
[0051] In practical applications, as Figure 2 shown, in order to select the most suitable target component for each component acoustic region, the components to be tested corresponding to each component acoustic region can be determined, and the relevant parameters of the components to be tested can be obtained; specifically, the components to be tested may not be the actual components that have been produced, but virtual components corresponding to the relevant parameters to be input by designers for simulation testing. Designers can arbitrarily construct components to be tested with different parameters for simulation testing according to their design requirements, and only after determining the actual target components to be used among the components to be tested, then produce actual components according to the relevant parameters of the target components.
[0052] Step 103, perform simulation testing on the components to be tested according to the relevant parameters of the components to be tested, and obtain the predicted acoustic performance values of the components to be tested;
[0053] In a specific implementation, such as Figure 2 shown, the component to be tested can be simulated and tested according to the relevant parameters of the component to be tested input by the designer, and the predicted value of the acoustic performance (actual acoustic result) of the component to be tested can be obtained;
[0054] Specifically, since there will inevitably be errors between the simulation test of the component to be tested and the test results of the actual component acoustic performance, the acoustic performance benchmark error values of different component acoustic regions can be determined first. Then, based on the acoustic performance benchmark error values of the corresponding component acoustic regions of the component to be tested and the simulated acoustic performance values of the component to be tested, the predicted value of the acoustic performance of the component to be tested can be obtained, thereby eliminating the errors in the simulation test results and improving the accuracy of the simulation test results. Since the thickness distribution of the acoustic package can generally be 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, etc., the coverage coefficients C1, C2, C3, C4, C5, C6, C7 relative to the sheet metal can be obtained. Therefore, the acoustic performance benchmark error values of different component acoustic regions can be obtained according to the following process:
[0055] Select 5 component samples, K1, K2, K3, K4, K5, from the component database (production samples) with thickness and coverage close to the currently developed vehicle model, and obtain the acoustic performance corresponding to the component samples through 3 actual tests. Take the average value to obtain the acoustic performance of the 5 component samples, namely S1, S2, S3, S4, S5;
[0056] Obtain the BIOT (Biot's Theory) parameters of the material by testing the component samples, and obtain the coverage coefficients of different thicknesses according to the corresponding relationship between the thickness distribution and the coverage coefficient in the foregoing content. Substitute the material parameters, thickness, and coverage coefficient into the simulation software to solve and obtain the simulated acoustic performance values S11, S12, S13, S14, S15 corresponding to the component samples;
[0057] Expand the acoustic performance obtained from the test and the simulation software by 1 / 3 octave (20 - 8000Hz), and compare each frequency band to obtain the error △S of each frequency band, that is, the errors △S1, △S2, △S3, △S4, △S5 of the 5 samples;
[0058] Taking the absolute value of △S as the standard, obtain the average error of the 5 samples, that is, △S = (|△S1| + |△S2| + |△S3| + |△S4| + |△S5|) / 5, as the acoustic performance benchmark error value.
[0059] On this basis, the predicted value Spre of the acoustic performance of the component to be tested in the current state can be predicted as Spre = Ssimulation - ΔS; where Ssimulation is the simulated acoustic performance value of the component to be tested, which can be obtained by inputting the relevant parameters of the component to be tested into the simulation software for testing.
[0060] In some embodiments of the present invention, the step of performing a simulation test on the component to be tested according to the relevant parameters of the component to be tested to obtain the predicted value of the acoustic performance of the component to be tested includes:
[0061] Determine the benchmark error value of the acoustic performance of the acoustic region of the component corresponding to the component to be tested, and perform a simulation test on the component to be tested according to the relevant parameters of the component to be tested to obtain the simulated acoustic performance value of the component to be tested;
[0062] Obtain the predicted value of the acoustic performance of the component to be tested based on the simulated acoustic performance value of the component to be tested and the benchmark error value of the acoustic performance.
[0063] In practical applications, since there will inevitably be errors between the simulation test of the component to be tested and the actual test results of the acoustic performance of the actual component, the benchmark error values of the acoustic performance of different component acoustic regions can be determined first. Then, based on the benchmark error value of the acoustic performance of the component acoustic region corresponding to the component to be tested and the simulated acoustic performance value of the component to be tested, the predicted value of the acoustic performance of the component to be tested can be obtained, thereby eliminating the errors in the simulation test results and improving the accuracy of the simulation test results. Since the thickness distribution of the acoustic package is generally 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, etc., the coverage coefficients C1, C2, C3, C4, C5, C6, C7 relative to the sheet metal can be obtained. Therefore, the benchmark error values of the acoustic performance of different component acoustic regions can be obtained according to the following process:
[0064] Select 5 component samples, K1, K2, K3, K4, K5, from the component database (production samples) with thickness and coverage rate close to the current developed vehicle model, and obtain the acoustic performance corresponding to the component samples through 3 actual tests. Take the average value to obtain the acoustic performance of the 5 component samples, namely S1, S2, S3, S4, S5;
[0065] Obtain the BIOT (Biot's Theory) parameters of the material by testing the component samples, and obtain the coverage coefficients of different thicknesses according to the corresponding relationship between the thickness distribution and the coverage coefficient described above. Substitute the material parameters, thickness, and coverage coefficient into the simulation software to solve and obtain the simulated acoustic performance values S11, S12, S13, S14, S15 corresponding to the component samples;
[0066] Expand the acoustic performance obtained from the experimental tests and simulation software in 1 / 3 octave bands (20 - 8000 Hz), and compare each frequency band to obtain the error △S for each frequency band, that is, the errors △S1, △S2, △S3, △S4, △S5 of 5 samples;
[0067] Taking the absolute value of △S as the standard, calculate the average error of the 5 samples, that is, △S = (|△S1| + |△S2| + |△S3| + |△S4| + |△S5|) / 5, as the acoustic performance benchmark error value.
[0068] On this basis, the predicted value Spre of the acoustic performance of the component to be tested in the current state can be predicted as Spre = Ssimulation - △S; where Ssimulation is the simulated acoustic performance value of the component to be tested, which can be obtained by inputting the relevant parameters of the component to be tested into the simulation software for testing.
[0069] In this embodiment, by determining the acoustic performance benchmark error value and correcting the simulation results, the error in the simulation prediction can be effectively eliminated, the accuracy of the predicted value of the acoustic performance can be improved, the deviation that may be brought by simply relying on the simulation results can be avoided, and the reliability and effectiveness of the acoustic package scheme design can be improved.
[0070] In some embodiments of the present invention, determining the acoustic performance benchmark error value of the acoustic region of the component corresponding to the component to be tested includes:
[0071] According to the vehicle model information, select corresponding component samples for the acoustic region of the component corresponding to the component to be tested in the component database, where the number of selected component samples in the acoustic region of the component is at least two;
[0072] Conduct acoustic performance tests on the component samples to obtain the acoustic performance values of the component samples, and conduct simulation tests according to the relevant parameters of the component samples to obtain the simulated acoustic performance values of the component samples;
[0073] According to the acoustic performance values and simulated acoustic performance values of the component samples, obtain the acoustic performance benchmark error values of the component samples.
[0074] In practical applications, since there will inevitably be errors between the simulation test results of the parts to be tested and the actual acoustic performance test results of the actual parts, the acoustic performance benchmark error values of different part acoustic regions can be determined first. Then, based on the acoustic performance benchmark error values of the corresponding part acoustic regions of the parts to be tested and the simulated acoustic performance values of the parts to be tested, the acoustic performance prediction values of the parts to be tested can be obtained, thereby eliminating the errors in the simulation test results and improving the accuracy of the simulation test results. Since the thickness distribution of the acoustic package can generally be 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, etc., the coverage coefficients C1, C2, C3, C4, C5, C6, C7 relative to the sheet metal can be obtained. Therefore, the acoustic performance benchmark error values of different part acoustic regions can be obtained according to the following process:
[0075] Select 5 part samples (the specific quantity can be adjusted according to actual requirements) K1, K2, K3, K4, K5 from the part database (production samples) with thickness and coverage rate close to the currently developed vehicle model, and obtain the acoustic performance corresponding to the part samples through 3 actual tests. Take the average value to obtain the acoustic performance of the 5 part samples, that is, S1, S2, S3, S4, S5;
[0076] Obtain the BIOT (Biot's Theory) parameters of the material by testing the part samples, and obtain the coverage coefficients of different thicknesses according to the corresponding relationship between the thickness distribution and the coverage coefficient in the foregoing content. Substitute the material parameters, thickness, and coverage coefficient into the simulation software to solve and obtain the simulated acoustic performance values S11, S12, S13, S14, S15 corresponding to the part samples;
[0077] Expand the acoustic performance obtained from the experimental test and the simulation software by 1 / 3 octave (20 - 8000Hz), and compare each frequency band to obtain the error △S of each frequency band, that is, the errors △S1, △S2, △S3, △S4, △S5 of the 5 samples;
[0078] Taking the absolute value of △S as the standard, obtain the average error value of the 5 samples, that is, △S = (|△S1| + |△S2| + |△S3| + |△S4| + |△S5|) / 5, as the acoustic performance benchmark error value.
[0079] In this embodiment, by selecting multiple part samples (at least two) for acoustic performance testing and simulation testing, the representativeness and reliability of the acoustic performance benchmark error values can be ensured, the errors that may be brought by a single sample can be avoided, and the accuracy of the acoustic performance prediction values can be further improved.
[0080] Step 104: Determine the parts to be adopted whose predicted acoustic performance values meet the preset conditions, and determine the target parts according to the preset evaluation function for the parts to be adopted whose acoustic performance and quality both meet the preset requirements;
[0081] In specific implementation, after obtaining the predicted acoustic performance value Spre of the part to be tested, the predicted acoustic performance value of the part to be tested can be expanded by 1 / 3 octave (20 - 8000 Hz), and each frequency band can be compared. When Spre (predicted value) ≥ Sref (target value) in each frequency band, it can be considered that the predicted acoustic performance value of the part to be tested meets the preset conditions, and the part to be tested can be determined as the part to be adopted; where Sref (target value) can be the ideal value set for the acoustic area of the part or the part itself during the design stage, and it can itself be used as the acoustic performance reference value for the acoustic area of the part or the part itself, and can be specifically set according to noise control requirements, acoustic targets, and customer needs.
[0082] Furthermore, as Figure 2 shown, the parts to be adopted whose acoustic performance and quality both meet the preset requirements can be determined as target parts according to the preset evaluation function. Specifically, the preset evaluation function for the acoustic performance and weight of the acoustic package of the part can be:
[0083] J = λ1 * W / (λ2 * S_total)
[0084] where J is the evaluation function value, λ1 is the quality weight coefficient of the part to be adopted, W is the quality of the part to be adopted, λ2 is the weight coefficient of the predicted acoustic performance value of the part to be adopted, and S_total is the total predicted acoustic performance value of the part to be adopted.
[0085] By solving through the above preset evaluation function, the part to be adopted corresponding to the minimum value (i.e., minJ) of the solved preset evaluation function value can be determined as the target part, so as to achieve the optimal balance between the acoustic performance and quality of the part. Among them, λ1 and λ2 can be determined according to the acoustic area of the part to be adopted. For example, the weight coefficients can be calibrated in advance according to the actual acoustic characteristics of different acoustic areas of the part (such as for the front sound insulation pad, λ1: 0.8, λ2: 0.2; for the front carpet, λ1: 0.4, λ2: 0.6); and W = ρ * A * T, which can be directly calculated according to the relevant parameters of the part to be adopted; in addition, for the calculation of S_total, Spre can be expanded by 1 / 3 octave (20 - 8000 Hz) with a total of 27 values, i.e., Spre1, Spre2,..., Spre27, and S_total = 10 * lg(10^(0.1 * Spre1) + 10^(0.1 * Spre2) +... + 10^(0.1 * Spre27)).
[0086] Further, the preset evaluation function can be used to solve the parts to be adopted corresponding to each component acoustic region, so as to determine the target parts corresponding to each component acoustic region and determine the S and W corresponding to the minJ of each component acoustic region, and the total mass Wtotal of the vehicle acoustic package can be calculated as W1 + W2 + W3 + W4 + W5 + W6, so as to achieve the goal of lightweighting the acoustic package on the premise of ensuring the performance of the vehicle acoustic package.
[0087] In some embodiments of the present invention, determining the parts to be adopted whose acoustic performance and quality both meet the preset requirements as target parts according to the preset evaluation function includes:
[0088] By means of the preset evaluation function, solve under the condition that the mass of the parts to be adopted is the numerator and the predicted acoustic performance value of the parts to be adopted is the denominator, and determine the parts to be adopted corresponding to the minimum value of the preset evaluation function value obtained by the solution as the target parts.
[0089] In specific implementation, as Figure 2 shown, the parts to be adopted whose acoustic performance and quality both meet the preset requirements can be determined as target parts according to the preset evaluation function. Specifically, the preset evaluation function for the acoustic performance and weight of the component acoustic package can be:
[0090] J = λ1 * W / (λ2 * S total)
[0091] where J is the evaluation function value, λ1 is the mass weight coefficient of the parts to be adopted, W is the mass of the parts to be adopted, λ2 is the predicted acoustic performance value weight coefficient of the parts to be adopted, and S total is the total predicted acoustic performance value of the parts to be adopted.
[0092] By solving using the above preset evaluation function, the component to be adopted corresponding to the minimum preset evaluation function value (i.e., minJ) obtained from the solution can be determined as the target component, so as to achieve the optimal balance between the acoustic performance and quality of the component. Among them, λ1 and λ2 can be determined according to the component acoustic region corresponding to the component to be adopted. For example, the weight coefficients can be calibrated in advance according to the actual acoustic characteristics of different component acoustic regions (such as for the front bulkhead sound insulation pad, λ1: 0.8, λ2: 0.2; for the front carpet, λ1: 0.4, λ2: 0.6); and W = ρ * A * T can be directly calculated according to the relevant parameters of the component to be adopted. In addition, for the calculation of S total, Spre can be expanded in 1 / 3 octave bands (20 - 8000 Hz) into a total of 27 values, i.e., Spre1, Spre2,..., Spre27, and S total = 10 * lg(10^(0.1 * Spre1) + 10^(0.1 * Spre2) +... + 10^(0.1 * Spre27)).
[0093] In some embodiments of the present invention, by using the preset evaluation function, under the condition that the mass of the component to be adopted is the numerator and the predicted acoustic performance value of the component to be adopted is the denominator, the solution is carried out, and the component to be adopted corresponding to the minimum preset evaluation function value obtained from the solution is determined as the target component, including:
[0094] According to the component acoustic region corresponding to the component to be adopted, determine the mass weight coefficient and the predicted acoustic performance value weight coefficient of the component to be adopted;
[0095] By using the preset evaluation function, under the condition that the mass of the component to be adopted is the numerator and the predicted acoustic performance value of the component to be adopted is the denominator, based on the mass weight coefficient and the predicted acoustic performance value weight coefficient of the component to be adopted, the solution is carried out, and the component to be adopted corresponding to the minimum preset evaluation function value obtained from the solution is determined as the target component.
[0096] In practical applications, according to the preset evaluation function, the component to be adopted that satisfies the preset requirements in both acoustic performance and quality can be determined as the target component. Specifically, the preset evaluation function for the acoustic performance and weight of the component acoustic package can be:
[0097] J = λ1 * W / (λ2 * S total)
[0098] Among them, J is the evaluation function value, λ1 is the mass weight coefficient of the component to be adopted, W is the mass of the component to be adopted, λ2 is the predicted acoustic performance value weight coefficient of the component to be adopted, and S total is the total predicted acoustic performance value of the component to be adopted.
[0099] By solving through the above preset evaluation function, the component to be adopted corresponding to the minimum value of the preset evaluation function obtained by the solution (i.e., minJ) can be determined as the target component, so as to achieve the optimal balance between the acoustic performance and quality of the component. Among them, λ1 and λ2 can be determined according to the component acoustic region corresponding to the component to be adopted. For example, the weight coefficients can be calibrated in advance according to the actual acoustic characteristics of different component acoustic regions (such as for the front bulkhead sound insulation pad, λ1: 0.8, λ2: 0.2; for the front carpet, λ1: 0.4, λ2: 0.6); and W = ρ * A * T can be directly calculated according to the relevant parameters of the component to be adopted. In addition, for the calculation of S total, Spre can be expanded in 1 / 3 octave bands (20 - 8000 Hz) with a total of 27 values, that is, Spre1, Spre2,..., Spre27, and S total = 10 * lg(10^(0.1 * Spre1) + 10^(0.1 * Spre2) +... + 10^(0.1 * Spre27)).
[0100] In some embodiments of the present invention, the component acoustic region is any one of the front bulkhead sound insulation pad region, the front carpet region, the rear section of the front carpet region, the wheelhouse sound insulation pad region, the rear carpet region, and the trunk carpet region.
[0101] In specific implementation, the vehicle acoustic package is both the main means to reduce vehicle noise and the goal of lightweight weight reduction. However, due to the market positioning and performance goals of the vehicle, system analysis is required. Taking a range-extended vehicle as an example, a range extender and a front motor are generally arranged in the front engine compartment, and the rear electric drive is arranged on the rear subframe. The main noise of the range extender is mainly in the medium and low frequencies, the electric drive is mainly in the medium and high frequencies, and the road noise is also mainly in the medium and high frequencies, all of which will propagate through the air path. Therefore, the acoustic performance of the range-extended vehicle includes sound insulation performance and sound absorption performance.
[0102] According to the position information of each component of the vehicle acoustic package, the vehicle acoustic package can be divided into at least two component acoustic regions. For example, it can be divided into 6 parts including the front bulkhead sound insulation pad A1, the front carpet A2, the rear section of the front carpet A3, the wheelhouse sound insulation pad A4, the rear carpet A5, and the trunk carpet A6. Specifically, it can be determined according to the actual structure of the vehicle, so as to decompose the acoustic performance of the vehicle acoustic package into the acoustic performance of the component acoustic regions, that is, the acoustic performance values of 6 component acoustic regions, and decompose the weight of the vehicle acoustic package into the sum of the component weights; so as to subsequently evaluate and select components for different component acoustic regions respectively to ensure the subsequent actual performance of the acoustic package solution.
[0103] In some embodiments of the present invention, the relevant parameters at least include coverage rate parameters, material parameters, thickness parameters, density parameters, and area parameters.
[0104] As the main means to reduce vehicle noise and the goal of lightweight weight reduction, the vehicle acoustic package needs to be systematically analyzed due to the market positioning and performance goals of the vehicle. Taking the range-extended vehicle as an example, the range extender and the front motor are generally arranged in the front engine compartment, and the rear electric drive is arranged on the rear subframe. The main noise of the range extender is mainly in the medium and low frequencies, the electric drive is mainly in the medium and high frequencies, and the road noise is also mainly in the medium and high frequencies, all of which will be transmitted through the air path. Therefore, the acoustic performance of the range-extended vehicle includes sound insulation performance and sound absorption performance.
[0105] Therefore, as Figure 2 shown, the main performance index of the acoustic package, STL (sound transmission loss), that is, the relevant parameters affecting the performance of the acoustic package, can include: coverage parameter: C, material parameter: M, thickness parameter: T, density parameter: ρ, area parameter: A;
[0106] Furthermore, according to the position information of each component of the vehicle acoustic package, the vehicle acoustic package can be divided into at least two component acoustic regions. For example, it can be divided into 6 parts including the front bulkhead sound insulation pad A1, the front carpet A2, the rear section of the front carpet A3, the wheelhouse sound insulation pad A4, the rear carpet A5 and the trunk carpet A6. Specifically, it can be determined according to the actual structure of the vehicle, so as to decompose the acoustic performance of the vehicle acoustic package into the acoustic performance of the component acoustic regions, that is, the acoustic performance values of the 6 component acoustic regions, and decompose the weight of the vehicle acoustic package into the sum of the component weights; in order to subsequently evaluate and select components for different component acoustic regions respectively to ensure the subsequent actual performance of the acoustic package solution.
[0107] It should be noted that for the method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the embodiments of the present invention are not limited by the described action sequence, because according to the embodiments of the present invention, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.
[0108] Referring to Figure 3 , a schematic structural diagram of a vehicle acoustic package solution design device provided by some embodiments of the present invention is shown, which may specifically include the following modules:
[0109] The component acoustic region division module 301 is used to divide the vehicle acoustic package into at least two component acoustic regions according to the position information of each component of the vehicle acoustic package;
[0110] The parameter acquisition module 302 is used to determine the components to be tested corresponding to each component acoustic region and acquire the relevant parameters of the components to be tested;
[0111] The acoustic performance prediction value determination module 303 is configured to perform a simulation test on the to-be-tested component according to the relevant parameters of the to-be-tested component, and obtain the acoustic performance prediction value of the to-be-tested component;
[0112] The target component determination module 304 is configured to determine the to-be-adopted components whose acoustic performance prediction values meet the preset conditions, and determine the target components whose acoustic performance and quality both meet the preset requirements according to the preset evaluation function;
[0113] The acoustic package solution generation module 305 is configured to determine the acoustic package solution of the vehicle according to the target components corresponding to each component acoustic region.
[0114] In some embodiments of the present invention, the acoustic performance prediction value determination module 303 includes:
[0115] The simulation acoustic performance value determination sub-module is configured to determine the acoustic performance reference error value of the component acoustic region corresponding to the to-be-tested component, and perform a simulation test on the to-be-tested component according to the relevant parameters of the to-be-tested component, and obtain the simulation acoustic performance value of the to-be-tested component;
[0116] The acoustic performance prediction value determination sub-module is configured to obtain the acoustic performance prediction value of the to-be-tested component according to the simulation acoustic performance value and the acoustic performance reference error value of the to-be-tested component.
[0117] In some embodiments of the present invention, the simulation acoustic performance value determination sub-module includes:
[0118] The component sample selection unit is configured to select the corresponding component samples for the component acoustic region corresponding to the to-be-tested component in the component database according to the vehicle model information, wherein the number of the component samples corresponding to the selected component acoustic region is at least two;
[0119] The component sample test unit is configured to perform an acoustic performance test on the component samples, obtain the acoustic performance values of the component samples, and perform a simulation test according to the relevant parameters of the component samples, and obtain the simulation acoustic performance values of the component samples;
[0120] The acoustic performance reference error value determination unit is configured to obtain the acoustic performance reference error value of the component samples according to the acoustic performance values and the simulation acoustic performance values of the component samples.
[0121] In some embodiments of the present invention, the target component determination module 304 includes:
[0122] A target component determination sub-module, configured to solve under the condition that the quality of the component to be adopted is the numerator and the predicted value of the acoustic performance of the component to be adopted is the denominator through the preset evaluation function, and determine the component to be adopted corresponding to the minimum preset evaluation function value obtained by the solution as the target component.
[0123] In some embodiments of the present invention, the target component determination sub-module includes:
[0124] A weight coefficient determination unit, configured to determine the quality weight coefficient and the predicted value weight coefficient of the acoustic performance of the component to be adopted according to the acoustic region of the component corresponding to the component to be adopted;
[0125] A target component determination unit, configured to solve through the preset evaluation function under the condition that the quality of the component to be adopted is the numerator and the predicted value of the acoustic performance of the component to be adopted is the denominator, based on the quality weight coefficient and the predicted value weight coefficient of the acoustic performance of the component to be adopted, and determine the component to be adopted corresponding to the minimum preset evaluation function value obtained by the solution as the target component.
[0126] Some embodiments of the present invention further provide an electronic device, which may include a processor, a memory, and a computer program stored on the memory and capable of running on the processor. When the computer program is executed by the processor, the above vehicle acoustic package scheme design method is implemented.
[0127] Some embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the above vehicle acoustic package scheme design method is implemented.
[0128] Some embodiments of the present invention further provide a computer program product, including a computer program, which implements the above vehicle acoustic package scheme design method when executed by a processor.
[0129] For the device embodiments, since they are basically similar to the method embodiments, the description is relatively simple. For the relevant parts, refer to the partial description of the method embodiments.
[0130] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.
[0131] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, an apparatus, or a computer program product. Therefore, the embodiments of the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the embodiments of the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0132] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing terminal devices generate a device for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.
[0133] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal devices to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device implements the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.
[0134] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal devices, such that a series of operation steps are executed on the computer or other programmable terminal devices to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable terminal devices provide steps for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.
[0135] Although the preferred embodiments of the embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concepts. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present invention.
[0136] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising the above elements.
[0137] The above provides a detailed introduction to a method and device, equipment, and medium for designing a vehicle acoustic package. Specific examples are used in this text to elaborate on the principles and implementation manners of the present invention. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.
Claims
1. A vehicle acoustic package design method, characterized in that: The method comprises: Dividing the vehicle acoustic package into at least two component acoustic areas according to position information of each component of the vehicle acoustic package; Determine the component to be tested corresponding to the acoustic area of each component, and obtain relevant parameters of the component to be tested; Performing a simulation test on the component to be tested according to relevant parameters of the component to be tested to obtain a predicted value of the acoustic performance of the component to be tested; Determine the tested component whose acoustic performance prediction value meets the preset conditions as the component to be adopted, and determine the component to be adopted whose acoustic performance and quality meet the preset requirements as the target component according to the preset evaluation function; An acoustic package solution for the vehicle is determined according to the target component corresponding to each component acoustic area.
2. The method according to claim 1, characterized in that: The step of performing a simulation test on the component to be tested according to relevant parameters of the component to be tested to obtain a predicted value of the acoustic performance of the component to be tested includes: Determine the acoustic performance reference error value of the component acoustic area corresponding to the component to be tested, and perform a simulation test on the component to be tested according to relevant parameters of the component to be tested to obtain a simulated acoustic performance value of the component to be tested; The predicted value of the acoustic performance of the component to be tested is obtained according to the simulated acoustic performance value of the component to be tested and the acoustic performance reference error value.
3. The method according to claim 2, characterized in that The step of determining the acoustic performance reference error value of the component acoustic area corresponding to the component to be tested includes: According to the vehicle model information, selecting corresponding component samples for the component acoustic area corresponding to the component to be tested in the component database, wherein the number of component samples selected corresponding to the component acoustic area is at least two; Performing an acoustic performance test on the component sample to obtain an acoustic performance value of the component sample, and performing a simulation test based on relevant parameters of the component sample to obtain a simulated acoustic performance value of the component sample; According to the acoustic performance value of the component sample and the simulated acoustic performance value, the acoustic performance benchmark error value of the component sample is obtained.
4. The method according to claim 1, characterized in that: The step of determining the components to be adopted whose acoustic performance and quality both meet preset requirements as target components according to the preset evaluation function includes: Through the preset evaluation function, the solution is performed under the condition that the mass of the component to be adopted is the numerator and the predicted value of the acoustic performance of the component to be adopted is the denominator, and the component to be adopted corresponding to the minimum preset evaluation function value obtained by the solution is determined as the target component.
5. The method according to claim 4, characterized in that The method of solving the preset evaluation function under the condition that the mass of the component to be adopted is the numerator and the acoustic performance prediction value of the component to be adopted is the denominator, and determining the component to be adopted corresponding to the minimum preset evaluation function value obtained by solving the preset evaluation function as the target component, includes: Determining a mass weight coefficient and an acoustic performance prediction value weight coefficient of the component to be adopted according to the component acoustic region corresponding to the component to be adopted; Through the preset evaluation function, under the condition that the mass of the component to be adopted is the numerator and the acoustic performance prediction value of the component to be adopted is the denominator, the solution is performed based on the mass weight coefficient of the component to be adopted and the acoustic performance prediction value weight coefficient, and the component to be adopted corresponding to the minimum preset evaluation function value obtained by the solution is determined as the target component.
6. The method according to any one of claims 1 to 5, characterized in that: The component acoustic area is any one of a front surround sound insulation pad area, a front carpet area, a front carpet rear area, a wheel hub sound insulation pad area, a rear carpet area, and a trunk carpet area.
7. The method according to any one of claims 1 to 5, characterized in that: The related parameters at least include coverage parameters, material parameters, thickness parameters, density parameters and area parameters.
8. A vehicle acoustic package design device, characterized in that: The device comprises: A component acoustic area division module, used for dividing the vehicle acoustic package into at least two component acoustic areas according to the position information of each component of the vehicle acoustic package; A parameter acquisition module, used to determine the component to be tested corresponding to the acoustic area of each component, and to acquire relevant parameters of the component to be tested; An acoustic performance prediction value determination module, used to perform a simulation test on the component to be tested according to relevant parameters of the component to be tested, to obtain an acoustic performance prediction value of the component to be tested; A target component determination module, used to determine the components to be tested whose predicted acoustic performance values meet preset conditions as components to be adopted, and to determine the components to be adopted whose acoustic performance and quality meet preset requirements as target components according to a preset evaluation function; The acoustic package solution generation module is used to determine the acoustic package solution of the vehicle according to the target component corresponding to the acoustic area of each component.
9. An electronic device, characterized in that: The invention comprises a processor, a memory and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, the vehicle acoustic package design method according to any one of claims 1 to 7 is implemented.
10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the vehicle acoustic package design method according to any one of claims 1 to 7 is implemented.