Method and device for determining position of dynamic vibration absorber

Abstract

The embodiment of the present application discloses a method and device for determining the position of a dynamic vibration absorber. First, by obtaining problem information, the corresponding vehicle model can be determined according to the basic vehicle information in the problem information, and then the pre-selected power transmission path is determined in the vehicle model according to the working condition information in the problem information; secondly, the transmission path analysis is performed using the vehicle model, and the target power transmission path is determined from the pre-selected power transmission path according to the transmission path analysis result, and then the modal contribution analysis is performed on the to-be-determined parts in the target power transmission path to obtain the corresponding modal contribution analysis result, and the to-be-adjusted parts are determined according to the modal contribution analysis result, and the preset placement position on the to-be-adjusted parts is obtained; finally, the target position of the dynamic vibration absorber is determined according to the vibration acceleration of each preset placement position in each to-be-adjusted part. In this way, the efficiency of determining the position of the dynamic vibration absorber can be improved, and it is convenient to improve the whole vehicle.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and in particular to a method and device for determining the position of a dynamic vibration absorber. Background Art

[0002] During the whole vehicle testing, the problem of excessive vibration of the whole vehicle may occur. It is necessary to place dynamic vibration absorbers in some parts of the whole vehicle to reduce the vibration of the whole vehicle.

[0003] At present, the method of manually determining the placement position of the dynamic vibration absorber cannot quickly determine the optimal placement position of the dynamic vibration absorber, resulting in low adjustment efficiency for the entire vehicle. Summary of the invention

[0004] In view of this, an embodiment of the present application provides a method and device for determining the position of a dynamic vibration absorber, which can efficiently determine the placement position of the dynamic vibration absorber.

[0005] To solve the above problems, the technical solutions provided in the embodiments of the present application are as follows:

[0006] In a first aspect, the present application provides a method for determining a position of a dynamic vibration absorber, the method comprising:

[0007] Obtaining problem information, wherein the problem information includes basic vehicle information and operating condition information;

[0008] Determining a vehicle model corresponding to the basic vehicle information;

[0009] In the vehicle model, determining a preselected power transmission path according to the operating condition information;

[0010] Performing a power transmission path analysis using the vehicle model, and determining a target power transmission path from the preselected power transmission paths according to the power transmission path analysis result;

[0011] Determine a part to be determined in the target power transmission path, perform a modal contribution analysis on the part to be determined, and obtain a modal contribution analysis result of the part to be determined;

[0012] Determine a part to be adjusted according to the modal contribution analysis result, and obtain a preset placement position on the part to be adjusted;

[0013] The vibration acceleration of each preset placement position in the part to be adjusted is calculated, and according to the vibration acceleration, the target position for placing the dynamic vibration absorber is determined in the preset placement position.

[0014] Optionally, performing a transfer path analysis using the vehicle model and determining a target power transfer path from the preselected power transfer paths according to a transfer path analysis result includes:

[0015] Calculating the energy distribution of the parts included in each preselected power transmission path in the vehicle model to obtain the energy distribution result of each part;

[0016] Select the parts whose energy distribution results are greater than the energy threshold as the target parts;

[0017] A power transmission path composed of the target part among the preselected power transmission paths is used as a target power transmission path.

[0018] Optionally, determining the part to be adjusted according to the modal contribution analysis result and obtaining a preset placement position on the part to be adjusted includes:

[0019] The to-be-determined parts whose modal contribution analysis results are greater than the modal contribution threshold are determined as the to-be-adjusted parts;

[0020] A displaceable position in the part to be adjusted is obtained as a preset placement position.

[0021] Optionally, the problem information further includes a problem frequency, and the step of calculating the vibration acceleration of each preset placement position in the part to be adjusted to determine the target adjustment position includes:

[0022] Calculating the vibration acceleration of each preset placement position in the part to be adjusted;

[0023] The vibration acceleration of each preset placement position under the problem frequency is obtained, and the preset placement position with a vibration acceleration greater than a threshold value is used as a placement target position.

[0024] Optionally, the question information further includes question parameters. After determining the vehicle model corresponding to the basic vehicle information, the method further includes:

[0025] configuring the operating parameters of the vehicle model according to the operating condition information, and operating the vehicle model to obtain an operating result;

[0026] Determining whether the operation result corresponds to the problem parameter;

[0027] If yes, then executing the steps of determining the preselected power transmission path in the vehicle model according to the operating condition information and subsequent steps;

[0028] If not, the model parameters of the vehicle model are adjusted until the operating result of the adjusted vehicle model corresponds to the problem parameters.

[0029] Optionally, the method further includes:

[0030] generating a first sound response curve of the target position according to the working condition information;

[0031] Disposing a simulated dynamic vibration absorber at the target position;

[0032] generating a second sound response curve of the target position after the simulated dynamic vibration absorber is set according to the working condition information;

[0033] A curve difference between the first sound response curve and the second sound response curve is calculated, and a target position whose curve difference meets a preset adjustment condition is determined as a candidate placement position.

[0034] Optionally, the arranging a simulated dynamic vibration absorber at the target position includes:

[0035] A target number of target adjustment positions are selected from the target positions, and simulated dynamic vibration absorbers are set at the target number of target adjustment positions; wherein the target number is a positive integer from 1 to the number of target positions.

[0036] Optionally, the arranging a simulated dynamic vibration absorber at the target adjustment position includes:

[0037] A simulated dynamic vibration absorber of a target mass is arranged at the target position, wherein the target mass is one or more masses between a maximum mass threshold and a minimum mass threshold.

[0038] In a second aspect, the present application provides a device for determining the position of a dynamic vibration absorber, the device comprising:

[0039] An acquisition unit, used to acquire problem information, wherein the problem information includes basic vehicle information and operating condition information;

[0040] A model determination unit, used to determine a vehicle model corresponding to the basic information of the vehicle;

[0041] a path determination unit, configured to determine, in the vehicle model, a preselected power transmission path according to the operating condition information;

[0042] a path selection unit, configured to perform a transfer path analysis using the vehicle model, and determine a target power transfer path from the preselected power transfer paths according to a transfer path analysis result;

[0043] An analysis unit, used to determine a part to be determined in the target power transmission path, perform a modal contribution analysis on the part to be determined, and obtain a modal contribution analysis result of the part to be determined;

[0044] A position acquisition unit, used to determine the part to be adjusted according to the modal contribution analysis result, and acquire a preset placement position on the part to be adjusted;

[0045] The position determination unit is used to calculate the vibration acceleration of each preset placement position in the part to be adjusted, and determine the target position for placing the dynamic vibration absorber in the preset placement position according to the vibration acceleration.

[0046] In a third aspect, the present application provides a device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, a method for determining the position of a dynamic vibration absorber as described in any one of the above items is implemented.

[0047] In a fourth aspect, the present application provides a computer-readable storage medium, characterized in that instructions are stored in the computer-readable storage medium, and when the instructions are executed on a terminal device, the terminal device executes a method for determining the position of a dynamic vibration absorber as described in any one of the above items.

[0048] It can be seen that the embodiments of the present application have the following beneficial effects:

[0049] The embodiment of the present application provides a method and device for determining the position of a dynamic vibration absorber. First, by obtaining problem information, the corresponding vehicle model can be determined according to the basic vehicle information in the problem information, and then the preselected power transmission path is determined in the vehicle model according to the working condition information in the problem information; secondly, the transmission path analysis is performed using the vehicle model, and the target power transmission path is determined from the preselected power transmission path according to the transmission path analysis result, and then the modal contribution analysis is performed on the parts to be determined in the target power transmission path to obtain the corresponding modal contribution analysis result, and the parts to be adjusted are determined according to the modal contribution analysis result, and the preset placement position on the parts to be adjusted is obtained; finally, the target position of the dynamic vibration absorber is determined according to the vibration acceleration of each preset placement position in each part to be adjusted. The corresponding vehicle model and the preselected power transmission path are first determined through the problem information, and then the target power transmission path and the parts to be adjusted that need to be adjusted are determined, and finally the target position on the parts to be adjusted is determined. In this way, the power transmission path and the parts to be adjusted can be determined through the problem information, and then the position to be adjusted can be determined. By simulating the power transmission path through the vehicle model, the position that needs to be adjusted in the whole vehicle can be determined more accurately, and then the installation position of the dynamic shock absorber can be determined more accurately, which improves the efficiency of determining the position of the dynamic shock absorber and facilitates the improvement of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A flow chart of a method for determining the position of a dynamic vibration absorber provided in an embodiment of the present application;

[0051] Figure 2A schematic diagram of the energy distribution of a part provided in an embodiment of the present application;

[0052] Figure 3 A schematic diagram of the modal contribution result data of each part provided in the embodiment of the present application;

[0053] Figure 4 A schematic diagram of a model vibration mode diagram provided in an embodiment of the present application;

[0054] Figure 5 A schematic diagram of a preset placement position of a front suspension provided in an embodiment of the present application;

[0055] Figure 6 A schematic structural diagram of a device for determining a position of a dynamic vibration absorber provided in an embodiment of the present application. DETAILED DESCRIPTION

[0056] In order to facilitate the understanding and explanation of the technical solutions provided by the embodiments of the present application, the background technology of the present application will be described below.

[0057] After studying the traditional method for determining the position of the dynamic vibration absorber of the whole vehicle, the inventor found that the whole vehicle is prone to excessive vibration or excessive noise during testing. In this case, it is necessary to install a dynamic vibration absorber on the whole vehicle to reduce the vibration of the whole vehicle. However, there are many positions on the whole vehicle where the dynamic vibration absorber can be installed. Currently, the position of the dynamic vibration absorber is usually determined manually based on experience. On the one hand, it is difficult to accurately determine the optimal position of the dynamic vibration absorber through the manual determination method; on the other hand, there are many positions for installing the dynamic vibration absorber, which is not convenient for subsequent whole vehicle experiments.

[0058] Based on this, an embodiment of the present application provides a method and device for determining the position of a dynamic vibration absorber. First, by obtaining problem information, the corresponding vehicle model can be determined according to the basic vehicle information in the problem information, and then the preselected power transmission path can be determined in the vehicle model according to the operating condition information in the problem information; secondly, the vehicle model is used to perform a transmission path analysis, and the target power transmission path is determined from the preselected power transmission path according to the transmission path analysis results, and then a modal contribution analysis is performed on the parts to be determined in the target power transmission path to obtain the corresponding modal contribution analysis results, and the parts to be adjusted are determined according to the modal contribution analysis results, and the preset placement position on the parts to be adjusted is obtained; finally, the target placement position of the dynamic vibration absorber is determined according to the vibration acceleration of each preset placement position in each part to be adjusted.

[0059] In order to facilitate understanding of the technical solution provided in the embodiment of the present application, a method for determining the position of a dynamic vibration absorber provided in the embodiment of the present application is described below with reference to the accompanying drawings.

[0060] See also Figure 1 As shown, this figure is a flow chart of a method for determining the position of a dynamic vibration absorber provided in an embodiment of the present application, and the method includes steps S101-S107.

[0061] S101: Obtain problem information, where the problem information includes basic vehicle information and operating condition information.

[0062] First, obtain the problem information, and determine the problem of the vehicle through the problem information. The problem information includes the basic information of the vehicle and the working condition information when the problem occurs.

[0063] The basic information of the vehicle refers to the type of the vehicle with the problem, the structure of the vehicle, and other information related to the vehicle structure itself. The corresponding vehicle model can be determined through the basic information of the vehicle, so that the vehicle model can be used to determine the installation position of the dynamic vibration absorber later.

[0064] The operating condition information refers to the specific operating condition information of the vehicle when the problem occurs, for example, the operating condition information includes acceleration condition, deceleration condition, road noise condition, etc. The operating condition information can be used to determine the power source and thus the power transmission path. For example, in the acceleration condition, the power source is the engine, and the power transmission path is determined to start from the engine.

[0065] S102: Determine a vehicle model corresponding to the basic vehicle information.

[0066] After determining the basic information of the vehicle, the vehicle model can be determined based on the basic information of the vehicle. It should be noted that the vehicle model is a simulation model with the same structure as the vehicle established by software. By modifying, running, controlling and other operations on the vehicle model, the simulation of the vehicle and the running state of the vehicle can be achieved. The vehicle model can be established in advance according to the basic information of the vehicle, or it can be established according to the basic information of the vehicle included in the problem information.

[0067] In a specific implementation, after obtaining the problem information, the basic vehicle information in the problem information may be obtained. Then, a vehicle model corresponding to the basic vehicle information is determined in a pre-established vehicle model. For example, when the obtained problem information is "MPV model acceleration noise", the basic vehicle information is an MPV model, and the corresponding determined vehicle model is a vehicle model corresponding to the MPV model.

[0068] S103: In the vehicle model, a preselected power transmission path is determined according to the operating condition information.

[0069] The preselected power transmission path is a power transmission path that is determined in advance on the basis of the vehicle model and corresponds to the operating condition information. The preselected power transmission path includes one or more parts. After the vehicle model is determined, the preselected power transmission path in the vehicle model can be determined based on the operating condition information in the problem information. For example, when the operating condition information is an acceleration condition or a deceleration condition, the excitation source is the powertrain, and the transmission path may be powertrain-suspension-body or powertrain-suspension-subframe-suspension-body, etc. When the operating condition information is road noise information, the excitation source comes from the road surface, so the corresponding transmission path may be road surface-suspension-body.

[0070] It should be noted that for different vehicle models, the specific vehicle structures are different, the parts in each vehicle structure are also different, and the corresponding pre-selected power transmission paths are different. In a possible implementation, the pre-selected power transmission path can be pre-set for possible different working condition information, so as to further determine the target power transmission path later.

[0071] S104: Performing a power transmission path analysis using the vehicle model, and determining a target power transmission path from the pre-selected power transmission paths according to the power transmission path analysis result.

[0072] There may be multiple pre-selected power transmission paths corresponding to the same operating condition information, and it is necessary to determine the main power transmission path and make targeted adjustments.

[0073] A transfer path analysis is performed on the vehicle model to obtain a corresponding transfer path analysis result, and then a main power transfer path in the pre-selected transfer path, that is, a target power transfer path, is determined according to the transfer path analysis result.

[0074] Specifically, the transmission path analysis can be performed on each part in the preselected power transmission path to obtain the transmission path analysis results corresponding to each part, and then the target power transmission path is determined according to the transmission path analysis results. The embodiment of the present application provides a method for determining the target power transmission path, please refer to the specific implementation method below for details.

[0075] S105: Determine the parts to be determined in the target power transmission path, perform modal contribution analysis on the parts to be determined, and obtain modal contribution analysis results of the parts to be determined.

[0076] After the target power transmission path is determined, there may be a large number of parts in the target power transmission path. Moreover, not all parts will have a significant impact on power transmission, and it is necessary to determine the parts that play a major role in the problem and set the dynamic vibration absorber accordingly.

[0077] Determine the parts to be determined in the target power transmission path, where the parts to be determined are one or more. Perform modal contribution analysis on the parts to be determined in the vehicle model to obtain corresponding modal contribution analysis results. Modal contribution refers to the characteristics of each order of main modes of a structure within a certain susceptible frequency range. The vibration conditions of each part can be determined through modal contribution analysis, and then the parts to be adjusted can be determined.

[0078] S106: Determine a part to be adjusted according to the modal contribution analysis result, and obtain a preset placement position on the part to be adjusted.

[0079] The parts to be adjusted are determined based on the results of the modal contribution analysis and are the parts that play a major role in generating the corresponding problem.

[0080] In order to further determine the installation position of the dynamic vibration absorber, it is necessary to obtain the preset placement position on the part to be adjusted. The preset placement position may be a non-fixed position in the part to be adjusted. By placing the dynamic vibration absorber at the preset placement position, the weight of the part to be adjusted can be increased, the vibration of the part to be adjusted can be reduced, and the problem of excessive vibration noise can be solved.

[0081] S107: Calculating the vibration acceleration of each preset placement position in the part to be adjusted, and determining the target position of the dynamic vibration absorber in the preset placement position according to the vibration acceleration.

[0082] There may be many preset placement positions in the part to be adjusted, and the weight of the part to be adjusted will be increased when the dynamic vibration absorber is placed. If the dynamic vibration absorber is placed at all the preset placement positions, the added weight is too much, which is not conducive to the operation of the vehicle.

[0083] The vibration acceleration of each preset position in the part to be adjusted is calculated, and the target position for placing the dynamic vibration absorber is determined based on the obtained vibration acceleration. The target position is the position where the dynamic vibration absorber can be placed. The structure of the vehicle model corresponds to the structure of the vehicle. On the basis of determining the target position, the corresponding position on the vehicle can be determined as the position for placing the dynamic vibration absorber.

[0084] Based on the above S101-S107, it can be known that the method for determining the position of the dynamic vibration absorber provided in the embodiment of the present application first obtains the problem information, then determines the corresponding vehicle model according to the basic vehicle information in the problem information, determines the preselected power transmission path in the vehicle model according to the working condition information, and then uses the vehicle model to perform the transmission path analysis. The target power transmission path is determined from the preselected power transmission path using the obtained transmission path analysis results, and then the modal contribution analysis is performed on the to-be-determined parts according to the to-be-determined parts in the target power transmission path to obtain the corresponding modal contribution analysis results. Finally, the parts to be adjusted are determined according to the modal contribution analysis results, the preset placement positions of the parts to be adjusted are obtained, the vibration accelerations of each preset placement position in the parts to be adjusted are calculated, and the target position of the dynamic vibration absorber is determined in the preset placement positions according to the vibration acceleration. The embodiment of the present application determines the corresponding vehicle model through the problem information, then first determines the target power transmission path, then determines the parts to be adjusted, and finally determines the target position. By analyzing the vehicle model to determine the target position of the dynamic vibration absorber, the target position can be determined more accurately and quickly, thereby improving the efficiency of determining the target position of the dynamic vibration absorber.

[0085] It is understandable that each part of the structure in the pre-selected power transmission path may be composed of multiple parts. The pre-selected power transmission path may contain a large number of parts, and the target power transmission path can be determined by determining the parts.

[0086] In a possible implementation, performing a transfer path analysis using the vehicle model and determining a target power transfer path from the preselected power transfer paths according to the transfer path analysis result includes the following three steps:

[0087] A1: Calculate the energy distribution of the parts included in each preselected power transmission path in the vehicle model to obtain the energy distribution result of each part.

[0088] The energy distribution of a part can reflect the proportion of the energy of the part in the total energy. By calculating the energy distribution of the parts, the proportion of each part in the process of power energy transmission can be determined.

[0089] For example, under acceleration conditions, when the pre-selected power transmission paths are "powertrain-suspension-body" and "powertrain-suspension-subframe-suspension-body", the parts in the two transmission paths are selected, including the rear suspension passive end, the left suspension passive end, the right suspension passive end, the left shock absorber tower, the right shock absorber tower, the steering column tube-CCB left connection point, the steering column tube-CCB right connection point, the exhaust hook and other parts. Calculate the energy distribution of each part to obtain the energy distribution results of each part, see Figure 2 , which is a schematic diagram of the result of energy distribution of a part provided in an embodiment of the present application.

[0090] A2: Select the parts whose energy distribution results are greater than the energy threshold as the target parts.

[0091] The larger the energy distribution result of a part, the greater the role of the part in the entire energy transfer process. In order to determine the part with a larger energy distribution result, an energy threshold can be determined in advance, and the part with an energy distribution result greater than the energy threshold can be determined as the target part. The target part obtained is the part with a greater impact on energy transmission during the power transmission process.

[0092] In a possible implementation, it may be determined individually whether the energy distribution of each part is greater than an energy threshold, and the parts with energy distribution greater than the energy threshold are taken as target parts.

[0093] In another possible implementation, the energy distribution of a single part may not be greater than the energy threshold. In this case, the energy distribution of each part can be used to sort the energy distribution. First, calculate the sum of the energy distributions of the part ranked first in energy distribution and the part ranked second in energy distribution, and determine whether the sum of the energy distributions is greater than the energy threshold. If the sum of the energy distributions is less than the energy threshold, add the energy distribution corresponding to the part ranked third in energy distribution, and then compare the updated sum of energy distributions with the energy threshold. If the sum of the energy distributions is less than the energy threshold, continue to add the energy distribution of the next ranked part until the sum of the energy distributions is greater than or equal to the energy threshold. If the sum of the energy distributions is greater than or equal to the energy threshold, take the part corresponding to the energy distribution in the sum of the energy distributions as the target part.

[0094] Taking the above transfer path results as an example, the energy threshold is 90%, and there is no energy distribution of parts greater than or equal to the energy threshold among the various parts. The energy distributions of the sorted parts with energy distributions from large to small are added in sequence, that is, the energy distributions are added in the order of rear suspension passive end, left suspension passive end, right suspension passive end, left vibration tower, right vibration tower, steering column tube-CCB left connection point, steering column tube-CCB right connection point... When calculating the left vibration tower, the energy distribution is 92.4%, which is greater than the energy threshold of 90%. Therefore, the rear suspension passive end, left suspension passive end, right suspension passive end, and left vibration tower are taken as target parts.

[0095] A3: The power transmission path consisting of the target part in the preselected power transmission path is used as the target power transmission path.

[0096] After determining the target parts, it is necessary to determine the target power transmission path based on the target parts. The preselected power transmission path including all the target parts is used as the target power transmission path. The determined target power transmission path is composed of the target parts and belongs to the preselected power transmission path. However, it should be noted that the target power transmission path may have other parts. If there may be multiple power transmission paths composed of the target parts, the sum of the energy distribution of the parts included in the different power transmission paths can be calculated, and the power transmission path with the larger sum of energy distribution can be selected as the target power transmission path.

[0097] In the embodiment of the present application, by calculating the energy distribution of the parts included in each pre-selected power transmission path in the vehicle model, the parts that play an important role in the power transmission process can be determined, and then the corresponding parts are used as target parts, and the power transmission path composed of the target parts is used as the target power transmission path. In this way, it can be ensured that the target power transmission path contains the parts that play an important role in the power transmission process, so that the subsequent determination of the parts to be adjusted from the parts to be determined is more accurate, and a more accurate target position of the dynamic vibration absorber is obtained.

[0098] In order to determine the part to be adjusted among the parts to be determined, a modal contribution analysis may be performed on the parts to be determined, and the part to be adjusted may be determined according to the modal contribution analysis results of each part to be determined.

[0099] In a possible implementation, the embodiment of the present application further provides a possible implementation of S106, determining the part to be adjusted according to the modal contribution analysis result, and obtaining a preset placement position on the part to be adjusted, including:

[0100] The to-be-determined parts whose modal contribution analysis results are greater than the modal contribution threshold are determined as the to-be-adjusted parts;

[0101] A displaceable position in the part to be adjusted is obtained as a preset placement position.

[0102] When determining the part to be adjusted using the modal contribution analysis result, the part to be adjusted can be determined according to the determined modal contribution threshold. The modal contribution threshold is the contribution threshold of the part to the response of the overall part. When the modal contribution analysis result of the part to be adjusted is greater than the modal contribution threshold, the part to be adjusted contributes more to the response of the overall part and may need to be controlled by placing a dynamic vibration absorber.

[0103] It should be noted that the modal contribution threshold can be pre-set or determined based on the modal contribution analysis results of the parts to be adjusted. As an example, the modal contribution analysis results of the parts to be adjusted can be sorted, and the modal contribution analysis result of the nth part to be adjusted can be used as the modal contribution threshold. Wherein, n is a positive integer, and the specific number of n can be set according to the number of parts to be adjusted.

[0104] In practical applications, modal contribution analysis can be performed on the determined parts to obtain modal contribution result data and modal vibration shape diagrams. Figure 3 As shown, Figure 3 A schematic diagram of the modal contribution result data of each part provided in the embodiment of the present application, Figure 4 A schematic diagram of a model vibration mode diagram provided in an embodiment of the present application. When performing modal contribution analysis on different parts to be determined, the parts to be determined are displayed in the model vibration mode diagram, and corresponding modal contribution result data of the parts to be determined are obtained. In a possible implementation, the colors of the displayed parts of different modal contribution result data in the model vibration mode diagram are different.

[0105] Dynamic vibration absorbers are installed at locations where displacement is likely to occur to reduce the displacement of parts and thus reduce noise.

[0106] First of all, it should be noted that the formula (1) for calculating the equivalent mass by the intrinsic modal method is:

[0107]

[0108] Among them, M ij is the equivalent mass of the i-th mode observed at point j; N is the degree of freedom of the complex system; m N is the mass of the Nth part in the system; {x i …x j …x N} T is the eigenvector of the i-th mode of the system.

[0109] The following two conclusions can be drawn:

[0110] (1) When point j is at the maximum deformation position of the mode, the equivalent mass is the smallest;

[0111] (2) When point j is at a node of the mode, the equivalent mass is infinite.

[0112] Based on the above conclusions, it can be determined that the dynamic vibration absorber should be installed at the position with the largest displacement response during the frequency response, that is, the target position.

[0113] After determining the part to be adjusted, the displaceable position in the part to be adjusted can be obtained and used as the preset placement position. Figure 5 , Figure 5 A schematic diagram of a preset placement position of a front suspension provided in an embodiment of the present application.

[0114] It should be noted that the displaceable position of the part to be adjusted in the vehicle model may be set accordingly according to the structure of the part to be adjusted in the actual vehicle.

[0115] In an embodiment of the present application, by determining the part to be adjusted whose modal contribution analysis result is greater than the modal contribution threshold as the part to be adjusted, and using the displaceable position as the preset placement position, the part to be adjusted can be determined based on the modal contribution analysis result. The part to be adjusted determined in this way is more accurate, and the target position determined based on the part to be adjusted is also more accurate.

[0116] When determining the target position of a dynamic vibration absorber, the target position that needs to be determined is the maximum position of the modal displacement. However, the modal displacement of a part is difficult to measure directly, which makes it difficult to determine the target position by direct detection.

[0117] In practical applications, what is directly measured is the vibration acceleration of the particle, so it is necessary to establish the relationship between vibration acceleration and displacement, and determine the position with the maximum displacement through the measured vibration acceleration.

[0118] It can be assumed that the entire vehicle is a linear, superimposable system. In fact, the vibration response can be decomposed into a series of superpositions of simple harmonic motions. The simple harmonic motion can be expressed by formula (2):

[0119] x=Asinθ=Asinωt (2)

[0120] Among them, x is the position of the particle, A is the maximum amplitude of the particle vibration, θ is the phase angle of the particle motion, ω is the circular frequency of the particle motion, and t is the time of the particle motion.

[0121] Taking the derivative with respect to time, the particle velocity can be expressed by formula (3):

[0122]

[0123] Derived again, the particle acceleration can be expressed by formula (4):

[0124]

[0125] From this, we can determine that the acceleration of a particle in simple harmonic motion is proportional to its displacement. The actual vibration response can be regarded as the weighted superposition of different simple harmonic motions.

[0126] The relationship between vibration response and displacement can be expressed by formula (5):

[0127] x=∑ i＝0 A i x i (5)

[0128] From this, we can conclude that the vibration acceleration and displacement of a particle in simple harmonic motion are no longer proportional, but positively correlated. That is, the position with large vibration acceleration also has large displacement.

[0129] In summary, the displacement of particle vibration can be characterized to a certain extent through vibration acceleration.

[0130] Based on the above problems and conclusions, an embodiment of the present application provides a method for determining a target position through vibration acceleration.

[0131] In a possible implementation, the problem information may also include a problem frequency, which refers to the frequency at which a vehicle problem occurs. For example, during acceleration of a certain vehicle model, there is an obvious noise peak at 51 Hz. 51 Hz is the problem frequency. At this time, the calculation of the vibration acceleration of each preset placement position in the part to be adjusted to determine the target adjustment position includes:

[0132] Calculating the vibration acceleration of each preset placement position in the part to be adjusted;

[0133] The vibration acceleration of each preset placement position under the problem frequency is obtained, and the preset placement position with a vibration acceleration greater than a threshold value is used as a placement target position.

[0134] After the parts to be adjusted are determined and the preset placement positions in each of the parts to be adjusted are determined, the vibration accelerations of each of the preset placement positions are calculated to obtain the vibration accelerations of each of the preset placement positions in each of the parts to be adjusted.

[0135] The vibration acceleration of the preset placement position is obtained at the problem frequency. Taking the above example, the vibration acceleration of each preset placement position is obtained at 51Hz. According to the vibration acceleration threshold, the preset placement position greater than the vibration acceleration threshold is used as the target placement position. For example, when the vibration acceleration threshold is 0.02, the preset placement position with a vibration acceleration greater than 0.02 is used as the target position of the dynamic vibration absorber.

[0136] In the embodiment of the present application, the preset placement position with a larger displacement can be determined by the vibration acceleration, and then the target position can be determined according to the vibration acceleration. Determining the target position by the vibration acceleration is, on the one hand, convenient for direct measurement; on the other hand, based on the positive correlation between the vibration acceleration and the displacement, the preset placement position with a larger displacement can be accurately determined. In this way, the efficiency and accuracy of determining the target position for placing the dynamic vibration absorber can be improved.

[0137] It is understandable that the vehicle model is established based on the vehicle structure, and the vehicle model may not fully and meticulously reflect the actual vehicle. In order to make the target position obtained based on the vehicle model more accurate, after determining the vehicle model corresponding to the basic information of the vehicle, the vehicle model needs to be calibrated.

[0138] In a possible implementation, the question information also includes question parameters. After determining the vehicle model corresponding to the basic vehicle information, the method further includes the following four steps:

[0139] B1: configuring the operating parameters of the vehicle model according to the operating condition information, and operating the vehicle model to obtain an operating result.

[0140] After determining the vehicle model corresponding to the basic information of the vehicle, the operating parameters of the vehicle model are configured according to the working condition information. It should be noted that the vehicle model can be established in the software in advance according to the vehicle structure, and the corresponding operating parameters of the vehicle model can be set to conduct an operating experiment on the vehicle model.

[0141] In order to ensure that the vehicle model can more accurately reflect the vehicle's problems, the operating parameters of the vehicle model can be configured according to the operating condition information, so that the vehicle model can be simulated according to the configured operating parameters to obtain corresponding operating results.

[0142] As an example, the operating parameters can be pre-set according to different operating condition information. For example, the corresponding operating parameters are determined according to operating condition information such as acceleration condition and deceleration condition. After the operating condition information is determined, the pre-set operating parameters can be directly obtained.

[0143] B2: Determine whether the operation result corresponds to the problem parameter.

[0144] According to the obtained operation results of the vehicle model, the operation status of the vehicle model under the corresponding working condition information can be determined. After the vehicle model is running, the operation results of the vehicle model can be obtained, and according to the operation status of the vehicle model, it can be judged whether the vehicle model can reflect the problem of the vehicle. Specifically, the operation results can be compared with the problem parameters in the problem information, thereby judging whether the vehicle model has the operation problem corresponding to the problem information.

[0145] B3: If yes, then execute the step of determining the preselected power transmission path and subsequent steps in the vehicle model according to the operating condition information.

[0146] If the operation result corresponds to the problem parameter, it means that there is no need to make corresponding adjustments to the vehicle model, the structure of the vehicle model is the same as the structure of the vehicle with the problem, and the vehicle operation can be simulated through the vehicle model. Subsequently, the preselected power transmission path is determined according to the working condition information and other subsequent steps are continued.

[0147] B4: If not, adjusting the model parameters of the vehicle model until the operating result of the adjusted vehicle model corresponds to the problem parameters.

[0148] If the operation results do not correspond to the problem parameters, it means that the current vehicle model cannot fully reflect the operation process of the vehicle, and the vehicle model needs to be adjusted. When adjusting the vehicle model, in one possible implementation method, the vehicle model can be compared with the vehicle in terms of mass distribution and stiffness distribution, and adjusted according to the comparison results. Then use the adjusted vehicle model to operate under the corresponding working conditions to obtain the operation results. The operation results of the adjusted vehicle model are compared with the problem parameters again. If the operation results of the adjusted vehicle model correspond to the problem parameters, the vehicle model can be determined, and subsequent steps such as using the working condition information to determine the pre-selected power transmission path can be performed. If the operation results of the adjusted vehicle model do not correspond to the problem parameters, continue to adjust the vehicle model from the two aspects of mass distribution and stiffness distribution until the operation results of the vehicle model correspond to the problem parameters.

[0149] In the embodiment of the present application, by comparing the operation results of the vehicle model under the corresponding working conditions with the problem parameters in the problem information, it can be determined whether the vehicle model can reflect the operation process of the vehicle, and then the inaccurate vehicle model can be adjusted. This allows the vehicle model to more accurately reflect the problems existing in the vehicle, facilitates the determination of the target position for the installation of the dynamic vibration absorber through the vehicle model, and improves the accuracy of the target position determined by the vehicle model.

[0150] There may be a large number of target positions determined by the vehicle model. When installing the dynamic vibration absorber based on the determined target positions, it may be necessary to determine target positions with better effects due to the high cost of conducting experiments or tests on the vehicle.

[0151] In response to the above problems, an embodiment of the present application further provides a method for determining the position of a dynamic vibration absorber, which, in addition to the above steps S101-S107, also includes the following four steps.

[0152] C1: Generate a first sound response curve of the target position according to the working condition information.

[0153] After the target position is determined, the operating condition of the vehicle model is determined according to the operating condition information, and the first sound response curve of each target position is generated under the corresponding operating condition. Specifically, the first sound response curve can be the sound response curve of the driver's right ear. Through the sound response curve, the vibration change of the vehicle can be clearly determined, and then the role of the dynamic vibration absorber can be determined.

[0154] C2: A simulated dynamic vibration absorber is arranged at the target position.

[0155] The simulated dynamic vibration absorber is set at the target position determined in the vehicle model. It is understandable that the vehicle model is established based on software, and the dynamic vibration absorber can be set to simulate the vehicle by setting the mass at the target position.

[0156] Since the number of target positions may be one or more, and the mass of the dynamic vibration absorber can be adjusted, there are many ways to set the dynamic vibration absorber.

[0157] In a possible implementation, the position where the dynamic vibration absorber is set can be adjusted. Setting a simulated dynamic vibration absorber at the target position includes:

[0158] A target number of target adjustment positions are selected from the target positions, and simulated dynamic vibration absorbers are set at the target number of target adjustment positions; wherein the target number is a positive integer from 1 to the number of target positions.

[0159] First, the number of target positions where the simulated dynamic vibration absorber needs to be set, that is, the target number, can be determined. The target number is a positive integer from 1 to the number of target positions. The target number can be any positive integer from 1 to the number of target positions, or it can be every positive integer from 1 to the number of target positions. For example, when the number of target positions determined is 5, the target number is a positive integer from 1 to 5, including 1 and 5.

[0160] A target number of target adjustment positions are selected from the determined target positions. The present embodiment does not limit the method of selecting the target adjustment positions. The target adjustment positions may be selected randomly or in a certain order. Simulated dynamic vibration absorbers are set at the target number of target adjustment positions.

[0161] In another possible implementation, the mass of the dynamic vibration absorber may be adjusted. Setting a simulated dynamic vibration absorber at the target adjustment position includes:

[0162] A simulated dynamic vibration absorber of a target mass is arranged at the target adjustment position, wherein the target mass is one or more masses between a maximum mass threshold and a minimum mass threshold.

[0163] The mass of the dynamic vibration absorber needs to be within a certain range. If the mass of the dynamic vibration absorber is too small, it cannot reduce the vibration; if the mass of the dynamic vibration absorber is large, it will increase the mass of the vehicle. The target mass of the dynamic vibration absorber can be a mass between a maximum mass threshold and a minimum mass threshold. As an example, the maximum mass threshold can be 10% of the mass of the part to be adjusted at the target position, and the minimum mass threshold can be a fixed 1 kg.

[0164] The target mass may be any one or more masses between the maximum mass threshold and the minimum mass threshold. For example, when the maximum mass threshold is 3 kg and the minimum mass threshold is 1 kg, the target mass may be 1 kg, 2 kg, 3 kg, or 1.5 kg.

[0165] It should be noted that the embodiment of the present application is not limited to the adjustment of the position and mass of the target dynamic vibration absorber. The position and mass of the target dynamic vibration absorber can be adjusted simultaneously to determine the placement position and mass of the dynamic vibration absorber with better effect.

[0166] C3: generating a second sound response curve of the target position after the simulated dynamic vibration absorber is set according to the working condition information.

[0167] After the simulated dynamic vibration absorber is set, a second sound response curve of the target position after the simulated dynamic vibration absorber is set is generated according to the working condition information. For the convenience of comparison, the second sound response curve can be the sound response curve of the right ear of the main driver.

[0168] C4: Calculate a curve difference between the first sound response curve and the second sound response curve, and determine a target position whose curve difference meets a preset adjustment condition as a candidate placement position.

[0169] The curve difference between the first sound response curve and the second sound response curve of the target position of the same simulated dynamic vibration absorber is calculated, and the role of the simulated dynamic vibration absorber in reducing vibration can be judged through the curve difference.

[0170] The target position whose curve difference meets the preset adjustment condition is determined as a candidate placement position, and the dynamic vibration absorber can be placed according to the determined candidate placement position. In practical applications, the position corresponding to the candidate placement position in the determined vehicle model in the vehicle can be used as the position for placing the dynamic vibration absorber.

[0171] Among them, the preset adjustment condition can specifically be that the curve difference is the largest, or that the curve difference satisfies the adjustment threshold. The embodiment of the present application does not limit the specific conditions of the preset adjustment condition.

[0172] In the embodiment of the present application, after determining the target position, the position or mass of the simulated dynamic vibration absorber can be adjusted to further determine the target position with better vibration reduction effect, that is, the candidate placement position. In this way, the installation effects of different dynamic vibration absorbers can be simulated by adjusting the mass and position or the mass or position, thereby determining the position of the dynamic vibration absorber with better effect, and also improving the efficiency of determining the position where the dynamic vibration absorber is installed.

[0173] Based on the method for determining the position of a dynamic vibration absorber provided in the above method embodiment, the embodiment of the present application also provides a device for determining the position of a dynamic vibration absorber, which will be described below in conjunction with the accompanying drawings.

[0174] See also Figure 6 , which is a schematic diagram of the structure of a position determination device for a dynamic vibration absorber provided in an embodiment of the present application. Figure 6 As shown, the position determination device of the dynamic vibration absorber includes:

[0175] An acquisition unit 601 is used to acquire problem information, where the problem information includes basic vehicle information and operating condition information;

[0176] A model determination unit 602, configured to determine a vehicle model corresponding to the basic vehicle information;

[0177] A path determination unit 603, configured to determine a preselected power transmission path in the vehicle model according to the operating condition information;

[0178] a path selection unit 604, configured to perform a transfer path analysis using the vehicle model, and determine a target power transfer path from the pre-selected power transfer paths according to the transfer path analysis result;

[0179] An analysis unit 605 is used to determine a part to be determined in the target power transmission path, perform a modal contribution analysis on the part to be determined, and obtain a modal contribution analysis result of the part to be determined;

[0180] A position acquisition unit 606, configured to determine a part to be adjusted according to the modal contribution analysis result, and acquire a preset placement position on the part to be adjusted;

[0181] The position determination unit 607 is used to calculate the vibration acceleration of each preset placement position in the part to be adjusted, and determine the target position for placing the dynamic vibration absorber in the preset placement position according to the vibration acceleration.

[0182] Optionally, the path selection unit is specifically used to:

[0183] Calculating the energy distribution of the parts included in each preselected power transmission path in the vehicle model to obtain the energy distribution result of each part;

[0184] Select the parts whose energy distribution results are greater than the energy threshold as the target parts;

[0185] A power transmission path composed of the target part among the preselected power transmission paths is used as a target power transmission path.

[0186] Optionally, the position acquisition unit is specifically used to determine the to-be-determined part whose modal contribution analysis result is greater than the modal contribution threshold as the to-be-adjusted part;

[0187] A displaceable position in the part to be adjusted is obtained as a preset placement position.

[0188] Optionally, the position determination unit is specifically used to calculate the vibration acceleration of each preset placement position in the part to be adjusted;

[0189] The vibration acceleration of each preset placement position under the problem frequency is obtained, and the preset placement position with a vibration acceleration greater than a threshold value is used as a placement target position.

[0190] Optionally, the question information further includes question parameters, and the device further includes:

[0191] An adjustment unit, configured to configure operating parameters of the vehicle model according to the operating condition information, and operate the vehicle model to obtain an operating result;

[0192] Determining whether the operation result corresponds to the problem parameter;

[0193] If yes, then executing the steps of determining the preselected power transmission path in the vehicle model according to the operating condition information and subsequent steps;

[0194] If not, the model parameters of the vehicle model are adjusted until the operating result of the adjusted vehicle model corresponds to the problem parameters.

[0195] Optionally, the device further comprises:

[0196] a candidate placement position determination unit, configured to generate a first sound response curve of the target position according to the working condition information;

[0197] Disposing a simulated dynamic vibration absorber at the target position;

[0198] generating a second sound response curve of the target position after the simulated dynamic vibration absorber is set according to the working condition information;

[0199] A curve difference between the first sound response curve and the second sound response curve is calculated, and a target position whose curve difference meets a preset adjustment condition is determined as a candidate placement position.

[0200] Optionally, the candidate placement position determination unit is specifically used to select a target number of target adjustment positions from the target positions, and set simulated dynamic vibration absorbers at the target number of target adjustment positions; wherein the target number is a positive integer from 1 to the number of target positions.

[0201] Optionally, the candidate placement position determination unit is specifically configured to set a simulated dynamic vibration absorber of a target mass at the target position, wherein the target mass is one or more masses between a maximum mass threshold and a minimum mass threshold.

[0202] Based on the method for determining the position of a dynamic vibration absorber provided in the above method embodiments, an embodiment of the present application also provides a device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the method for determining the position of a dynamic vibration absorber as described in any one of the above items is implemented.

[0203] Based on the method for determining the position of a dynamic vibration absorber provided in the above method embodiments, an embodiment of the present application also provides a computer-readable storage medium, characterized in that instructions are stored in the computer-readable storage medium, and when the instructions are executed on a terminal device, the terminal device executes the method for determining the position of a dynamic vibration absorber as described in any one of the above items.

[0204] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0205] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0206] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0207] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0208] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for determining the position of a dynamic vibration absorber, It is characterized in that The method comprises: Obtaining problem information, wherein the problem information includes basic vehicle information and operating condition information; Determining a vehicle model corresponding to the basic vehicle information; In the vehicle model, determining a preselected power transmission path according to the operating condition information; Performing a power transmission path analysis using the vehicle model, and determining a target power transmission path from the preselected power transmission paths according to the power transmission path analysis result; Determine a part to be determined in the target power transmission path, perform a modal contribution analysis on the part to be determined, and obtain a modal contribution analysis result of the part to be determined; Determine a part to be adjusted according to the modal contribution analysis result, and obtain a preset placement position on the part to be adjusted; Calculating the vibration acceleration of each preset placement position in the part to be adjusted, and determining the target position for placing the dynamic vibration absorber in the preset placement position according to the vibration acceleration; The step of performing a power transmission path analysis using the vehicle model and determining a target power transmission path from the preselected power transmission paths according to the power transmission path analysis result includes: Calculating the energy distribution of the parts included in each preselected power transmission path in the vehicle model to obtain the energy distribution result of each part; Select the parts whose energy distribution results are greater than the energy threshold as the target parts; A power transmission path composed of the target part among the preselected power transmission paths is used as a target power transmission path.

2. The method according to claim 1, It is characterized in that The step of determining the part to be adjusted according to the modal contribution analysis result and obtaining a preset placement position on the part to be adjusted includes: The to-be-determined parts whose modal contribution analysis results are greater than the modal contribution threshold are determined as the to-be-adjusted parts; A displaceable position in the part to be adjusted is obtained as a preset placement position.

3. The method according to claim 1, It is characterized in that The problem information also includes a problem frequency. The calculating of the vibration acceleration of each preset placement position in the part to be adjusted and determining the target position for placing the dynamic vibration absorber in the preset placement position according to the vibration acceleration include: Calculating the vibration acceleration of each preset placement position in the part to be adjusted; The vibration acceleration of each preset placement position under the problem frequency is obtained, and the preset placement position with a vibration acceleration greater than a threshold value is used as a placement target position.

4. The method according to claim 1, It is characterized in that The question information also includes question parameters. After determining the vehicle model corresponding to the basic vehicle information, the method further includes: configuring the operating parameters of the vehicle model according to the operating condition information, and operating the vehicle model to obtain an operating result; Determining whether the operation result corresponds to the problem parameter; If yes, then executing the steps of determining the preselected power transmission path in the vehicle model according to the operating condition information and subsequent steps; If not, the model parameters of the vehicle model are adjusted until the operating result of the adjusted vehicle model corresponds to the problem parameters.

5. The method according to claim 1, It is characterized in that The method further comprises: generating a first sound response curve of the target position according to the working condition information; Disposing a simulated dynamic vibration absorber at the target position; generating a second sound response curve of the target position after the simulated dynamic vibration absorber is set according to the working condition information; A curve difference between the first sound response curve and the second sound response curve is calculated, and a target position whose curve difference meets a preset adjustment condition is determined as a candidate placement position.

6. The method according to claim 5, It is characterized in that The step of arranging a simulated dynamic vibration absorber at the target position comprises: A target number of target adjustment positions are selected from the target positions, and simulated dynamic vibration absorbers are set at the target number of target adjustment positions; wherein the target number is a positive integer from 1 to the number of target positions.

7. The method according to claim 5, It is characterized in that The step of arranging a simulated dynamic vibration absorber at the target adjustment position comprises: A simulated dynamic vibration absorber of a target mass is arranged at the target position, wherein the target mass is one or more masses between a maximum mass threshold and a minimum mass threshold.

8. A device for determining the position of a dynamic vibration absorber, It is characterized in that The device comprises: An acquisition unit, used to acquire problem information, wherein the problem information includes basic vehicle information and operating condition information; A model determination unit, used to determine a vehicle model corresponding to the basic information of the vehicle; a path determination unit, configured to determine, in the vehicle model, a preselected power transmission path according to the operating condition information; a path selection unit, configured to perform a transfer path analysis using the vehicle model, and determine a target power transfer path from the preselected power transfer paths according to a transfer path analysis result; An analysis unit, used to determine a part to be determined in the target power transmission path, perform a modal contribution analysis on the part to be determined, and obtain a modal contribution analysis result of the part to be determined; A position acquisition unit, used to determine the part to be adjusted according to the modal contribution analysis result, and acquire a preset placement position on the part to be adjusted; a position determination unit, configured to calculate the vibration acceleration of each preset placement position in the part to be adjusted, and determine the target position for placing the dynamic vibration absorber in the preset placement position according to the vibration acceleration; The path selection unit is specifically used for: Calculating the energy distribution of the parts included in each preselected power transmission path in the vehicle model to obtain the energy distribution result of each part; Select the parts whose energy distribution results are greater than the energy threshold as the target parts; A power transmission path composed of the target part among the preselected power transmission paths is used as a target power transmission path.

9. A device, It is characterized in that include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for determining the position of a dynamic vibration absorber as described in any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, It is characterized in that The computer-readable storage medium stores instructions, and when the instructions are executed on a terminal device, the terminal device executes the method for determining the position of a dynamic vibration absorber according to any one of claims 1 to 7.

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