A method and apparatus for determining vibration noise quality
By calculating the half-order vibration and noise perception parameters of the engine, the problem of difficulty in determining the quality of engine vibration and noise was solved, thereby improving user satisfaction with the car and their willingness to purchase.
Patent Information
- Application Number
- CN202210968828.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-08-12
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2042-08-12
AI Technical Summary
Existing technologies make it difficult to effectively determine the vibration and noise quality of an engine, which affects user satisfaction and willingness to purchase a vehicle.
By acquiring the engine's target parameters, the perceived parameters of half-order vibration and noise, such as the protrusion level, intermediate level, and sub-intermediate level, are calculated. The correspondence between these parameters and vibration and noise quality is then used to determine the user's level of satisfaction with the vehicle.
This technology enables accurate assessment of engine vibration and noise quality based on users' perception characteristics of half-order vibration and noise, thereby improving user satisfaction and willingness to purchase the vehicle.
Smart Images
Figure CN115344944B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of vehicles, and in particular to a vibration noise quality determination method and device. BACKGROUND
[0002] With the rapid development of the automobile industry, there are more and more automobile products. The evaluation of each automobile product by users is very important public opinion data for automobile enterprises in the automobile industry. When users choose an automobile product, the vibration noise quality of the engine in the automobile is an important influencing factor. The vibration noise quality of the engine refers to the perception of automobile noise by users, and can reflect the satisfaction of users with the automobile. For example, the higher the vibration noise quality of the engine, the better the perception of users, and the higher the satisfaction of users with the automobile.
[0003] Therefore, there is a need to determine the vibration noise quality of the engine at present, so as to improve the willingness of users to purchase the automobile. SUMMARY
[0004] Embodiments of the present application provide a vibration noise quality determination method and device, which can obtain the vibration noise quality of the engine, determine the perception degree of users, and accordingly determine the satisfaction degree of users with the vehicle, so that the vehicle can be improved subsequently, and the willingness of users to purchase the vehicle can be improved.
[0005] Embodiments of the present application provide a vibration noise quality determination method, which comprises:
[0006] obtaining a target parameter of an engine in a vehicle;
[0007] calculating a perception parameter of semi-order vibration noise according to the target parameter, the perception parameter and the vibration noise quality having a corresponding relationship, and the perception parameter reflecting the perception characteristics of users on the semi-order vibration noise;
[0008] determining the vibration noise quality by using the corresponding relationship and the perception parameter, and the vibration noise quality reflecting the satisfaction degree of users with the vehicle.
[0009] Optionally, the perception parameter comprises a highlight level, an interval difference level, and a sub-interval difference level.
[0010] The calculating of the perception parameter of semi-order vibration noise according to the target parameter comprises:
[0011] calculating the highlight level, the interval difference level, and the sub-interval difference level respectively according to the target parameter;
[0012] The determining of the vibration noise quality by using the corresponding relationship and the perception parameter comprises:
[0013] determine the vibration noise quality by using the correspondence relationship, the highlight level, the interval difference level and the sub-interval difference level.
[0014] Optionally, the vehicle engine comprises a plurality of cylinders.
[0015] The target parameters of the vehicle engine comprise:
[0016] The target parameters of each cylinder of the plurality of cylinders of the vehicle engine are acquired.
[0017] The highlight level, the interval difference level and the sub-interval difference level of each cylinder are respectively calculated according to the target parameters of all the cylinders, which comprises:
[0018] The highlight level, the interval difference level and the sub-interval difference level of each cylinder are respectively calculated according to the target parameters of all the cylinders, which comprises:
[0019] The vibration noise quality is determined by using the correspondence relationship, the maximum value of the interval difference level and the maximum value of the sub-interval difference level.
[0020] The vibration noise quality is determined by using the correspondence relationship, the maximum value of the interval difference level and the maximum value of the sub-interval difference level.
[0021] Optionally, the plurality of cylinders comprises a first target cylinder and a second target cylinder.
[0022] The highlight level, the interval difference level and the sub-interval difference level of each cylinder are respectively calculated according to the target parameters of all the cylinders, which comprises:
[0023] A first target vibration noise level of the first target cylinder is calculated according to the target parameters of the first target cylinder.
[0024] A first average vibration noise level of the plurality of cylinders and a second average vibration noise level of the plurality of cylinders except the first target cylinder are calculated according to the target parameters of the plurality of cylinders.
[0025] A difference between the first target vibration noise level and the first average vibration noise level is determined as the highlight level of the first target cylinder, and a difference between the first target vibration noise level and the second average vibration noise level is determined as the interval difference level of the first target cylinder.
[0026] A second target vibration noise level of the second target cylinder is calculated according to the target parameters of the second target cylinder, the second target cylinder being any one cylinder except the cylinder with the maximum interval difference level.
[0027] A third average vibration noise level of the plurality of cylinders except the cylinder with the maximum interval difference level and the second target cylinder is calculated according to the target parameters of the plurality of cylinders.
[0028] A difference between the second target vibration noise level and the third average vibration noise level is determined as a second target cylinder order difference level.
[0029] Optionally, the target parameter comprises one or more of displacement, velocity, acceleration, angular displacement, angular velocity, angular acceleration, noise value, flywheel swing angle, and deflection.
[0030] Optionally, the method further comprises:
[0031] A correspondence between the perception parameter and the vibration noise quality is established in advance.
[0032] Embodiments of the present application provide a vibration noise quality determination apparatus, the apparatus comprising:
[0033] An acquisition unit configured to acquire a target parameter of an engine in a vehicle;
[0034] A calculation unit configured to calculate a perception parameter of a half-order vibration noise according to the target parameter, the perception parameter and the vibration noise quality having a correspondence, the perception parameter reflecting a user's perception characteristic of the half-order vibration noise;
[0035] A determination unit configured to determine the vibration noise quality by using the correspondence and the perception parameter, the vibration noise quality reflecting a user's satisfaction degree of the vehicle.
[0036] Optionally, the perception parameter comprises a prominence level, an order difference level, and a second order difference level.
[0037] The calculation unit is specifically configured to:
[0038] The prominence level, the order difference level, and the second order difference level are respectively calculated according to the target parameter;
[0039] The determination unit is specifically configured to:
[0040] The vibration noise quality is determined by using the correspondence, the prominence level, the order difference level, and the second order difference level.
[0041] Optionally, the vehicle engine comprises a plurality of cylinders;
[0042] The acquisition unit is specifically configured to:
[0043] A target parameter of each cylinder of the plurality of cylinders of the vehicle engine is acquired;
[0044] The calculation unit is specifically configured to:
[0045] The prominence level, the order difference level, and the second order difference level of each cylinder are respectively calculated according to the target parameter of all the cylinders;
[0046] The determining unit is specifically configured to:
[0047] The vibration noise quality is determined by using the corresponding relationship, the maximum of the maximum interval difference level and the maximum of the minimum interval difference level.
[0048] Optionally, the plurality of cylinders include a first target cylinder and a second target cylinder.
[0049] The calculating unit is specifically configured to:
[0050] The first target vibration noise level of the first target cylinder is calculated according to the target parameter of the first target cylinder.
[0051] The first average vibration noise level of the plurality of cylinders and the second average vibration noise level of the plurality of cylinders except the first target cylinder are calculated according to the target parameters of the plurality of cylinders.
[0052] The difference between the first target vibration noise level and the first average vibration noise level is determined as the highlight level of the first target cylinder, and the difference between the first target vibration noise level and the second average vibration noise level is determined as the interval difference level of the first target cylinder.
[0053] The second target vibration noise level of the second target cylinder is calculated according to the target parameter of the second target cylinder, the second target cylinder being any one cylinder except the cylinder with the maximum interval difference level.
[0054] The third average vibration noise level of the plurality of cylinders except the cylinder with the maximum interval difference level and the second target cylinder is calculated according to the target parameters of the plurality of cylinders.
[0055] The difference between the second target vibration noise level and the third average vibration noise level is determined as the minimum interval difference level of the second target cylinder.
[0056] The embodiment of the present application provides a vibration noise quality determination method, which comprises the following steps: obtaining a target parameter of an engine in a vehicle, calculating a perception parameter of a half-order vibration noise according to the target parameter, the perception parameter and the vibration noise quality having a corresponding relationship, the perception parameter reflecting a perception characteristic of the half-order vibration noise, determining the vibration noise quality by using the corresponding relationship and the perception parameter, and the vibration noise quality reflecting a satisfaction degree of a user to the vehicle. That is to say, the embodiment of the present application can calculate the perception parameter reflecting the half-order vibration noise by using the target parameter of the vehicle or the engine, and can determine the vibration noise quality of the vehicle or the engine by using the perception parameter and the corresponding relationship between the perception parameter and the vibration noise quality, so as to finally obtain the vibration noise quality, determine the perception degree of the user, and accordingly determine the satisfaction degree of the user to the vehicle, so that the vehicle can be improved in the future and the willingness of the user to purchase the vehicle can be improved. BRIEF DESCRIPTION OF DRAWINGS
[0057] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.
[0058] Figure 1 A flow chart of a vibration noise quality determination method provided by an embodiment of the present application;
[0059] Figure 2 A structural block diagram of a vibration noise quality determination apparatus provided by an embodiment of the present application. DETAILED DESCRIPTION
[0060] In order to make the skilled in the art better understand the present application, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0061] With the rapid development of the automobile industry, there are more and more automobile products. The evaluation of each automobile product by the user is a very important public opinion data for automobile enterprises in the automobile industry.
[0062] When the user selects an automobile product, the user will not only consider the size of the vibration noise of the automobile, but also consider the vibration noise quality of the automobile. The vibration noise quality of the automobile refers to the user's perception of the automobile noise, which can reflect the user's satisfaction with the automobile. For example, the higher the vibration noise quality of the automobile, the better the user's perception, and the higher the user's satisfaction with the automobile.
[0063] The main source of vibration noise of the automobile is the engine, and the vibration noise performance of the engine is closely related to the vibration noise order. In order to improve the vibration noise quality of the engine and the whole vehicle, it is necessary to control the vibration noise order level of the engine, especially the half-order level. The half-order vibration noise is the vibration noise of the frequency component of the engine (j+1 / 2) order (j is 0 and a positive integer). The frequency of the half-order vibration noise is usually below 500 Hz, and the half-order vibration noise is mainly structure-borne noise with the engine excitation force as the vibration source.
[0064] Therefore, how to determine the vibration noise quality of the automobile through the half-order vibration is a technical problem to be solved in order to improve the user's willingness to purchase the automobile.
[0065] Based on this, the embodiment of the application provides a vibration noise quality determination method, which comprises the following steps: obtaining a target parameter of an engine in a vehicle; calculating a perception parameter of a half-order vibration noise according to the target parameter; the perception parameter and the vibration noise quality have a corresponding relationship; the perception parameter reflects the perception characteristics of the half-order vibration noise by a user; the vibration noise quality is determined by using the corresponding relationship and the perception parameter; and the vibration noise quality reflects the satisfaction degree of the user to the vehicle. That is to say, the embodiment of the application can calculate the perception parameter reflecting the half-order vibration noise by using the target parameter of the vehicle or the engine, and can determine the vibration noise quality of the engine by using the perception parameter and the corresponding relationship between the perception parameter and the vibration noise quality, so as to finally obtain the vibration noise quality, determine the perception degree of the user, and accordingly determine the satisfaction degree of the user to the vehicle, so that the vehicle can be improved in the future and the willingness of the user to purchase the vehicle can be improved.
[0066] In order to better understand the technical solutions and technical effects of the application, the specific embodiments will be described in detail below with reference to the drawings.
[0067] Referring to Figure 1 , the figure is a flow chart of a vibration noise quality determination method provided by the embodiment of the application. The vibration noise quality determination method provided by the embodiment of the application can be applied to an engine and can also be applied to a car including an engine.
[0068] The vibration noise quality determination method provided by the embodiment comprises the following steps:
[0069] S101, obtaining a target parameter of an engine in a vehicle.
[0070] In the embodiment of the application, the target parameter of the engine in the vehicle when running can be obtained, that is, the target parameter is the parameter of the engine when working. The engine is taken as an example below, and the target parameter can be a fitted excitation response of the engine or an actually measured excitation response of the engine.
[0071] The target parameter can comprise one or more of displacement, speed, acceleration, angular displacement, angular speed, angular acceleration, noise value, flywheel swing angle and deflection.
[0072] S102, calculating a perception parameter of a half-order vibration noise according to the target parameter.
[0073] In the embodiments of the present application, after the target parameter of the engine of the vehicle is obtained, the perception parameter of the half-order vibration noise can be calculated according to the target parameter, wherein the perception parameter and the vibration noise quality of the engine have a corresponding relationship, the perception parameter can reflect the perception characteristics of the half-order vibration noise of the user, and the vibration noise quality can reflect the satisfaction degree of the user to the vehicle.
[0074] In the embodiments of the present application, the perception parameter includes the highlight level, the interval difference level and the sub-interval difference level, that is, the highlight level, the interval difference level and the sub-interval difference level are used as the objective parameter of the half-order vibration noise. Therefore, the highlight level, the interval difference level and the sub-interval difference level can be calculated according to the target parameter respectively.
[0075] In actual application, the engine of the vehicle includes a plurality of cylinders, so that the target parameter of each cylinder of the plurality of cylinders of the engine of the vehicle can be obtained, and then the highlight level, the interval difference level and the sub-interval difference level of each cylinder can be calculated according to the target parameters of all the cylinders.
[0076] In the embodiments of the present application, the highlight level ΔL i is used to describe the performance characteristics of the half-order vibration noise of the engine or the vehicle, that is, the highlight level ΔL i is used to describe whether the half-order vibration noise exists in the engine during operation and the degree of the half-order vibration noise.
[0077] Specifically, the plurality of cylinders in the engine includes a first target cylinder, the first target cylinder is any one of the plurality of cylinders, the first target vibration noise level of the first target cylinder can be calculated according to the target parameter of the first target cylinder, the first average vibration noise level of the plurality of cylinders can be calculated according to the target parameters of the plurality of cylinders, and the difference between the first target vibration noise level and the first average vibration noise level is determined as the highlight level of the first target cylinder. That is, the highlight level ΔL i may be the difference between the vibration noise level of the half-order vibration noise corresponding to the target parameter of the certain cylinder of the plurality of cylinders and the average vibration noise level of the half-order vibration noise corresponding to the target parameters of all the cylinders.
[0078] As an example, the highlight level ΔL i may be obtained by using the following calculation formula:
[0079]
[0080]
[0081]
[0082] wherein x i is the target parameter, i is any one cylinder, L xithe vibration noise level of the i-th cylinder, the average vibration noise level of all cylinders, N is the total number of cylinders, and x0 is a vibration noise reference value.
[0083] The above formula can be modified by those skilled in the art, and is not a specific limited formula for obtaining the prominence level ΔL i .
[0084] In the embodiments of the present application, the intermediate difference level ΔL′ i is used to describe the perceptual characteristics of the half-order vibration noise of the engine or vehicle, that is, the intermediate difference level ΔL′ i is used to describe the degree of user perception of the half-order vibration noise of the engine during operation.
[0085] Specifically, the plurality of cylinders in the engine includes a first target cylinder, which is any one of the plurality of cylinders. The first target vibration noise level of the first target cylinder can be calculated according to the target parameter of the first target cylinder, and then the second average vibration noise level of the plurality of cylinders except the first target cylinder is calculated according to the target parameters of the plurality of cylinders. The difference between the first target vibration noise level and the second average vibration noise level is determined as the intermediate difference level of the first target cylinder. That is, the intermediate difference level ΔL′ i may be the difference between the vibration noise level of the half-order vibration noise corresponding to the target parameter of a certain cylinder in the plurality of cylinders and the average vibration noise level of the half-order vibration noise corresponding to the target parameters of the other cylinders.
[0086] As an example, the intermediate difference level ΔL′ i may be obtained by using the following calculation formula:
[0087]
[0088]
[0089]
[0090] wherein x i is a target parameter, i is any one cylinder, L xi is the vibration noise level of the i-th cylinder, is the average vibration noise level of the remaining cylinders except the i-th cylinder, N is the total number of cylinders, and x0 is a vibration noise reference value.
[0091] The above formula can be modified by those skilled in the art, and is not a specific limited formula for obtaining the intermediate difference level ΔL′ i .
[0092] In the embodiments of the present application, the secondary intermediate difference level ΔL″ kThe perceived characteristic of the half-order vibration noise of the engine or vehicle, that is, the sub-inter-level difference ΔL" k and the inter-level difference ΔL' i Both are used to describe the degree of user's perception of the half-order vibration noise of the engine during operation.
[0093] Specifically, the plurality of cylinders in the engine includes a second target cylinder, which is any one cylinder except the cylinder with the largest inter-level difference, and the second target vibration noise level of the second target cylinder can be calculated based on the target parameters of the second target cylinder. Then, the third average vibration noise level of the plurality of cylinders except the cylinder with the largest inter-level difference and the second target cylinder is calculated based on the target parameters of the plurality of cylinders, and the difference between the second target vibration noise level and the third average vibration noise level is determined as the sub-inter-level difference of the second target cylinder. That is, the sub-inter-level difference ΔL" k may be the difference between the vibration noise level of the half-order vibration noise corresponding to the target parameters of the cylinder except the cylinder with the largest inter-level difference in the plurality of cylinders and the average vibration noise level of the half-order vibration noise corresponding to the target parameters of the cylinders except the cylinder with the largest inter-level difference.
[0094] As an example, the sub-inter-level difference ΔL" k may be obtained by using the following calculation formula:
[0095]
[0096]
[0097]
[0098] wherein x q is the target parameter, k is any one cylinder, L xk is the vibration noise level of the kth cylinder except the cylinder with the largest inter-level difference, is the average vibration noise level of the remaining cylinders except the cylinder with the largest inter-level difference and the kth cylinder, N is the total number of cylinders, and x0 is the vibration noise reference value.
[0099] The above formula can be arbitrarily modified by those skilled in the art, and is not a specific limited formula for obtaining the sub-inter-level difference ΔL" k .
[0100] S103, determining the vibration noise quality by using the corresponding relationship and the perceived parameter.
[0101] In the embodiments of the present application, after the perception parameter of the half-order vibration noise is calculated according to the target parameter, a corresponding relationship between the perception parameter and the vibration noise quality of the vehicle can be established in advance, so that the vibration noise quality of the vehicle can be determined according to the perception parameter and the corresponding relationship, so as to finally determine the perception degree of the user to the half-order vibration noise and the satisfaction degree of the user to the vehicle.
[0102] In the embodiments of the present application, the perception parameter includes the highlight level, the interval difference level and the sub-interval difference level, so that one or more of the highlight level, the interval difference level and the sub-interval difference level and the vibration noise quality can be established in advance, and then the vibration noise quality can be determined by using the corresponding relationship, the highlight level, the interval difference level and the sub-interval difference level.
[0103] Specifically, since the engine includes a plurality of cylinders, the corresponding relationship between the maximum value of the interval difference level and the maximum value of the sub-interval difference level and the vibration noise quality can be established in advance, and then the vibration noise quality can be determined by using the corresponding relationship, the maximum value of the interval difference level and the maximum value of the sub-interval difference level.
[0104] In actual application, the vibration noise quality can reflect the satisfaction degree of the user to the vehicle, and the vibration noise quality is determined by the perception parameter of the half-order vibration noise and the corresponding relationship, that is, the vibration noise quality can be based on the evaluation parameter of the objective parameter of the half-order vibration noise of the engine or the vehicle, and the vibration noise quality and the perception parameter have a correlation.
[0105] As an example, the vibration noise quality can be represented by using the evaluation parameter MARK, and the corresponding relationship between the vibration noise quality and the perception parameter can be as shown in the following formula:
[0106]
[0107] wherein, is a sub-interval difference level perception coefficient,
[0108] In the embodiments of the present application, the vibration noise quality can be classified according to the interval, and the classification result can determine the satisfaction degree of the user to the vehicle or the perception degree of the user to the half-order vibration noise of the vehicle, and accordingly, the willingness of the user to select the vehicle can also be determined.
[0109] Specifically, the classification of the vibration noise quality can be shown by using the following table:
[0110]
[0111] wherein, when the MARK score is greater than 10, the score is taken as 10, and when the MARK score is less than 1, the score is taken as 1.
[0112] The vehicle vibration noise quality determination method provided by the embodiments of the present application is exemplified by specific examples as follows:
[0113] The first example: through simulation analysis, it is obtained that the swing angle of the flywheel mass center point around the Y axis in one working cycle under the condition of 750 r / min idle speed of a 2.5L engine is respectively -0.006°, -0.014°, -0.0325° and -0.0035°.
[0114] The protruding levels of the four cylinders are respectively obtained as:
[0115] ΔL1=-9.56
[0116] ΔL2=-2.20
[0117] ΔL3=5.12
[0118] ΔL4=-14.24
[0119] The above results reflect that there is a half-order vibration noise in the running process of the engine.
[0120] The interval levels of the four cylinders are respectively obtained as:
[0121] ΔL′1=-10.68
[0122] ΔL′2=-2.74
[0123] ΔL′3=11.13
[0124] ΔL′4=-15.45
[0125] max(ΔL′ i )=11.13
[0126] The sub-interval levels of the three cylinders are respectively obtained as:
[0127] ΔL″1=-4.61
[0128] ΔL″2=9.10
[0129] ΔL″3=-9.76
[0130] max(ΔL″ k )=9.10
[0131] The final MARK score is obtained as:
[0132]
[0133] MARK=6.07
[0134] The MARK score reflects that the user's satisfaction with the vehicle is acceptable, the perception of the half-order vibration noise is slight, but some customers think it is disturbing, and the willingness to choose the vehicle is higher.
[0135] Second example: through actual measurement, the flywheel vibration displacement of a 2.0L engine under the condition of 1000r / min idle speed in one working cycle is respectively 2.27mm, 1.28mm, 0.7mm and 0.98mm.
[0136] The prominent levels of the four cylinders are respectively:
[0137] ΔL1=3.98
[0138] ΔL2=-1.00
[0139] ΔL3=-6.24
[0140] ΔL4=-3.32
[0141] The above results reflect that the engine has half-order vibration noise during operation.
[0142] The interval levels of the four cylinders are respectively:
[0143] ΔL'1=6.99
[0144] ΔL'2=-1.28
[0145] ΔL'3=-7.22
[0146] ΔL'4=-4.03
[0147] max(ΔL' i )=6.99
[0148] The sub-interval levels of the three cylinders are respectively:
[0149] ΔL''1=3.54
[0150] ΔL''2=-4.24
[0151] ΔL''3=-0.45
[0152] max(ΔL'' k )=3.54
[0153] The final MARK score is:
[0154]
[0155] MARK=7.44
[0156] The MARK score reflects that the user's satisfaction with the vehicle is very good, and the perception of the half-order vibration noise is only noticed by trained reviewers. Third example: through actual measurement, the right ear noise of the main driver in one working cycle under the condition of 750 r / min idle speed of a vehicle is 52.52 dB, 52.79 dB, 51.43 dB and 52.13 dB respectively.
[0157] The outstanding levels of the four cylinders are respectively:
[0158] ΔL1=0.27
[0159] ΔL2=0.54
[0160] ΔL3=-0.82
[0161] ΔL4=-0.12
[0162] The above results reflect that the engine has half-order vibration noise during operation.
[0163] The interval levels of the four cylinders are respectively:
[0164] ΔL'1=0.37
[0165] ΔL'2=0.74
[0166] ΔL'3=-1.06
[0167] ΔL'4=-0.16
[0168] max(ΔL' i )=0.74
[0169] The sub-interval levels of the three cylinders are respectively:
[0170] ΔL''1=0.73
[0171] ΔL''2=-0.90
[0172] ΔL''3=0.12
[0173] max(ΔL'' k )=0.73
[0174] The final MARK score is:
[0175]
[0176] MARK=9.67
[0177] The MARK score reflects that the user's satisfaction with the vehicle is very good, and the perception of the half-order vibration noise is only noticed by trained reviewers. Third example: through actual measurement, the right ear noise of the main driver in one working cycle under the condition of 750 r / min idle speed of a vehicle is 52.52 dB, 52.79 dB, 51.43 dB and 52.13 dB respectively.
[0178] The embodiment of the present application provides a vibration noise quality determination method, which comprises the following steps: obtaining a target parameter of an engine in a vehicle; calculating a perception parameter of a half-order vibration noise according to the target parameter; the perception parameter and the vibration noise quality have a corresponding relationship; the perception parameter reflects the perception characteristic of the half-order vibration noise of a user; the vibration noise quality is determined by using the corresponding relationship and the perception parameter; and the vibration noise quality reflects the satisfaction degree of the user to the vehicle. That is to say, the embodiment of the present application can calculate the perception parameter reflecting the half-order vibration noise by using the target parameter of the vehicle or the engine, and can determine the vibration noise quality of the engine by using the perception parameter and the corresponding relationship between the perception parameter and the vibration noise quality, so as to finally obtain the vibration noise quality, determine the perception degree of the user, and accordingly determine the satisfaction degree of the user to the vehicle, so that the vehicle can be improved in the future, and the willingness of the user to purchase the vehicle can be improved.
[0179] Based on the vibration noise quality determination method provided in the above embodiment, the embodiment of the present application further provides a vibration noise quality determination device, and the working principle thereof will be described in detail below with reference to the drawings.
[0180] Referring to Figure 2 FIG. 1 is a structural block diagram of a vibration noise quality determination device provided by the embodiment of the present application.
[0181] The vibration noise quality determination device 200 provided by the embodiment comprises:
[0182] An obtaining unit 210 is configured to obtain a target parameter of an engine in a vehicle.
[0183] A calculating unit 220 is configured to calculate a perception parameter of a half-order vibration noise according to the target parameter; the perception parameter and the vibration noise quality have a corresponding relationship; and the perception parameter reflects the perception characteristic of the half-order vibration noise of a user.
[0184] A determining unit 230 is configured to determine the vibration noise quality by using the corresponding relationship and the perception parameter; and the vibration noise quality reflects the satisfaction degree of the user to the vehicle.
[0185] Optionally, the perception parameter comprises a highlight level, an interval difference level and a sub-interval difference level.
[0186] The calculating unit is specifically configured to:
[0187] calculate the highlight level, the interval difference level and the sub-interval difference level respectively according to the target parameter;
[0188] The determining unit is specifically configured to:
[0189] determine the vibration noise quality by using the correspondence, the prominence level, the inter-difference level and the sub-inter-difference level.
[0190] Optionally, the vehicle engine includes a plurality of cylinders.
[0191] The acquisition unit is specifically configured to:
[0192] acquire a target parameter of each cylinder of the plurality of cylinders of the vehicle engine;
[0193] The calculation unit is specifically configured to:
[0194] calculate the prominence level, the inter-difference level and the sub-inter-difference level of each cylinder according to the target parameter of the cylinder;
[0195] The determination unit is specifically configured to:
[0196] determine the vibration noise quality by using the correspondence, the maximum of the inter-difference level and the maximum of the sub-inter-difference level.
[0197] Optionally, the plurality of cylinders includes a first target cylinder and a second target cylinder.
[0198] The calculation unit is specifically configured to:
[0199] calculate a first target vibration noise level of the first target cylinder according to the target parameter of the first target cylinder;
[0200] calculate a first average vibration noise level of the plurality of cylinders and a second average vibration noise level of the plurality of cylinders except the first target cylinder according to the target parameters of the plurality of cylinders;
[0201] determine the prominence level of the first target cylinder as a difference between the first target vibration noise level and the first average vibration noise level, and determine the inter-difference level of the first target cylinder as a difference between the first target vibration noise level and the second average vibration noise level;
[0202] calculate a second target vibration noise level of the second target cylinder according to the target parameter of the second target cylinder, the second target cylinder being any one cylinder except the cylinder with the maximum inter-difference level;
[0203] calculate a third average vibration noise level of the plurality of cylinders except the cylinder with the maximum inter-difference level and the second target cylinder according to the target parameters of the plurality of cylinders;
[0204] determine the sub-inter-difference level of the second target cylinder as a difference between the second target vibration noise level and the third average vibration noise level.
[0205] Optionally, the target parameter comprises one or more of displacement, velocity, acceleration, angular displacement, angular velocity, angular acceleration, noise value, flywheel swing angle, and deflection.
[0206] Optionally, the apparatus further comprises:
[0207] a establishing unit configured to pre-establish a correspondence between the perception parameter and the vibration noise quality.
[0208] When introducing the elements of various embodiments of the present application, the articles "a", "an", "the" and "said" are intended to mean that there are one or more elements. The words "comprise", "include" and "have" are inclusive and mean that in addition to the listed elements, other elements can also be present.
[0209] It should be noted that those of ordinary skill in the art can understand that all or part of the processes in the above method embodiments can be completed by a computer program instructing related hardware, and the program can be stored in a computer readable storage medium. When the program is executed, it can include the processes of the above method embodiments. The storage medium can be a magnetic disc, an optical disc, a read-only memory (ROM), a random access memory (RAM), or the like.
[0210] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between each of the embodiments can be referred to each other. Each of the embodiments focuses on the difference from other embodiments. In particular, for the device embodiments, since they are basically similar to the method embodiments, they are described more simply, and the relevant parts can be referred to the part of the method embodiments. The above-described device embodiments are only illustrative, and the units and modules described as separate components can or can not be physically separated. In addition, part or all of the units and modules can be selected according to actual needs to achieve the purpose of the embodiment. Those of ordinary skill in the art can understand and implement without creative labor.
[0211] The above is only a specific embodiment of the present application, and it should be noted that those of ordinary skill in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should be considered as the protection scope of the present application.
Claims
1. A method of determining a vibrational noise quality, the method comprising: The method comprises: obtaining target parameters of each cylinder of a plurality of cylinders of an engine in a vehicle, the engine comprising the plurality of cylinders, the plurality of cylinders comprising a first target cylinder and a second target cylinder; calculating a first target vibration noise level of the first target cylinder according to the target parameters of the first target cylinder; calculating a first average vibration noise level of the plurality of cylinders and a second average vibration noise level of the plurality of cylinders excluding the first target cylinder according to the target parameters of the plurality of cylinders; determining a difference between the first target vibration noise level and the first average vibration noise level as a highlight level of the first target cylinder, and determining a difference between the first target vibration noise level and the second average vibration noise level as an interval difference level of the first target cylinder; calculating a second target vibration noise level of the second target cylinder according to the target parameters of the second target cylinder, the second target cylinder being any one cylinder excluding the cylinder with the largest interval difference level; calculating a third average vibration noise level of the plurality of cylinders excluding the cylinder with the largest interval difference level and the second target cylinder according to the target parameters of the plurality of cylinders; determining a difference between the second target vibration noise level and the third average vibration noise level as a sub-interval difference level of the second target cylinder, the highlight level, the interval difference level, and the sub-interval difference level being perception parameters of half-order vibration noise, the perception parameters and vibration noise quality having a corresponding relationship, the perception parameters reflecting a perception characteristic of the half-order vibration noise of a user, and the vibration noise quality reflecting a satisfaction degree of the user to the vehicle; determining the vibration noise quality by using the corresponding relationship, a maximum value in the interval difference levels of the cylinders, and a maximum value in the sub-interval difference levels of the cylinders.
2. The method of claim 1, wherein, The target parameters comprise one or more of displacement, speed, acceleration, angular displacement, angular speed, angular acceleration, noise value, flywheel swing angle, and deflection.
3. The method of claim 1, wherein, The method further comprises: pre-establishing a corresponding relationship between the perception parameters and the vibration noise quality.
4. A vibration noise quality determination apparatus characterized by comprising: The apparatus comprises: an obtaining unit configured to obtain target parameters of each cylinder of a plurality of cylinders of an engine in a vehicle, the engine comprising the plurality of cylinders, the plurality of cylinders comprising a first target cylinder and a second target cylinder; a calculating unit configured to calculate a first target vibration noise level of the first target cylinder according to the target parameters of the first target cylinder; calculate a first average vibration noise level of the plurality of cylinders and a second average vibration noise level of the plurality of cylinders excluding the first target cylinder according to the target parameters of the plurality of cylinders; determine a difference between the first target vibration noise level and the first average vibration noise level as a highlight level of the first target cylinder, and determine a difference between the first target vibration noise level and the second average vibration noise level as an interval difference level of the first target cylinder; calculate a second target vibration noise level of the second target cylinder according to the target parameters of the second target cylinder, the second target cylinder being any one cylinder excluding the cylinder with the largest interval difference level; calculate a third average vibration noise level of the plurality of cylinders excluding the cylinder with the largest interval difference level and the second target cylinder according to the target parameters of the plurality of cylinders; determine a difference between the second target vibration noise level and the third average vibration noise level as a sub-interval difference level of the second target cylinder, the highlight level, the interval difference level, and the sub-interval difference level being perception parameters of half-order vibration noise, the perception parameters and vibration noise quality having a corresponding relationship, the perception parameters reflecting a perception characteristic of the half-order vibration noise of a user, and the vibration noise quality reflecting a satisfaction degree of the user to the vehicle; determining a difference between the second target vibration noise level and the third average vibration noise level as a second sub-intermodulation level of the second target cylinder, the prominent level, the intermodulation level, and the sub-intermodulation level being perception parameters of half-order vibration noise, the perception parameters and a vibration noise quality having a corresponding relationship, the perception parameters reflecting a perception characteristic of the half-order vibration noise by a user, and the vibration noise quality reflecting a satisfaction degree of the user on the vehicle; a determining unit configured to determine the vibration noise quality by using the corresponding relationship, a maximum value in the intermodulation levels of the cylinders, and a maximum value in the sub-intermodulation levels of the cylinders.
Citation Information
Patent Citations
Method, system and equipment for quantitatively evaluating engine noise based on signal modulation
CN114441177A