Whole vehicle overground high complaint rate prediction method and electronic equipment

Abstract

The invention discloses a vehicle overground high complaint rate prediction method and electronic equipment. The method comprises the following steps: acquiring original complaint data of a plurality of vehicle types; calculating the complaint rate of each vehicle type according to the complaint original data of each vehicle type; calculating the whole vehicle comprehensive ground height of each vehicle type; fitting the complaint rates of the plurality of vehicle types and the corresponding comprehensive ground heights of the whole vehicle to obtain a fitting curve of the comprehensive ground heights of the whole vehicle about the complaint rates; and calculating the overall vehicle comprehensive ground height of a to-be-tested vehicle model as a to-be-tested ground height, and substituting the to-be-tested ground height into the fitted curve to obtain a complaint rate corresponding to the to-be-tested ground height. When a new vehicle model is designed, the complaint rate corresponding to the above-ground height of the vehicle model can be predicted, so that whether the complaint rate meets the requirement or not can be judged conveniently, and design correction is performed on the above-ground height based on the complaint rate.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and particularly to a method for predicting the high complaint rate of a whole vehicle on the ground, an electronic device, a storage medium, and a computer program product. Background Art

[0002] In the past vehicle development process, the setting of the high ground clearance (ground clearance) of the whole vehicle is an important part of the design and development. A lower ground clearance is beneficial for styling and energy consumption, etc., but it may cause more road surface interference and market user complaints related to comfort; while a higher ground clearance is beneficial for passability, but it may lead to deterioration of performance such as aerodynamics. Therefore, a suitable design value of the ground clearance becomes particularly important. Currently, the ground clearance setting method mainly refers to the Base model developed in the past or the minimum ground clearance value declared in the regulations of competing vehicles. This method is relatively convenient and easy to operate. However, when encountering a newly developed vehicle model, since the front and rear bumper styling, wheelbase, vehicle posture and weight, layout of chassis parts, etc. of the new vehicle model may be quite different from those of the previously developed vehicle models, this method cannot accurately estimate the market user's road surface interference complaints. For example, at the initial stage of the development of a certain vehicle model X, the impact of the ground clearance setting was not fully considered. After the vehicle was launched on the market, a large number of users complained that the chassis was too low, which had an adverse impact on the vehicle's reputation. Summary of the Invention

[0003] Based on this, in view of the technical problem that the existing technology cannot predict the user complaint rate when designing the ground clearance of the whole vehicle, it is necessary to provide a method for predicting the high complaint rate of the ground clearance of the whole vehicle, an electronic device, a storage medium, and a computer program product.

[0004] The present invention provides a method for predicting the high complaint rate of the ground clearance of the whole vehicle, including:

[0005] Obtaining the original complaint data of multiple vehicle models;

[0006] Calculating the complaint rate of each vehicle model according to the original complaint data of each vehicle model;

[0007] Calculating the overall vehicle comprehensive ground clearance of each vehicle model;

[0008] Fitting the complaint rates of multiple vehicle models and the corresponding overall vehicle comprehensive ground clearances to obtain a fitting curve of the overall vehicle comprehensive ground clearance with respect to the complaint rate;

[0009] Calculating the overall vehicle comprehensive ground clearance of the vehicle model to be tested as the ground clearance to be tested, and substituting the ground clearance to be tested into the fitting curve to obtain the complaint rate corresponding to the ground clearance to be tested.

[0010] Further, the calculating the overall vehicle comprehensive ground clearance of each vehicle model includes:

[0011] Calculate the ground clearance of the whole vehicle for each vehicle model;

[0012] Calculate the passability parameters for each vehicle model;

[0013] Calculate the comprehensive ground clearance of the whole vehicle for each vehicle model based on the ground clearance of the whole vehicle and the passability parameters of each vehicle model.

[0014] Furthermore, the calculation of the ground clearance of the whole vehicle for each vehicle model includes:

[0015] Divide the vehicle chassis into multiple regions;

[0016] Determine the weight of each region;

[0017] Calculate the average ground clearance of each region for each vehicle model;

[0018] Calculate the ground clearance of the whole vehicle for each vehicle model based on the weight of each region and the average ground clearance of each region for each vehicle model.

[0019] Still further, the calculation of the ground clearance of the whole vehicle for each vehicle model based on the weight of each region and the average ground clearance of each region for each vehicle model includes:

[0020] The calculation of the ground clearance of the whole vehicle for each vehicle model is:

[0021] Wherein, G total is the ground clearance of the whole vehicle of the vehicle model, n is the number of regions, r i is the weight of the i-th region, G i is the average ground clearance of the i-th region of the vehicle model.

[0022] Still further, the determination of the weight of each region includes:

[0023] Calculate the proportion of regional complaints in each region among all vehicle models based on the original complaint data of all vehicle models;

[0024] Take the proportion of regional complaints in each region as the weight of the region.

[0025] Furthermore, the calculation of the passability parameters for each vehicle model includes:

[0026] The calculation of the passability parameters for each vehicle model is:

[0027] Wherein, T is the passability parameter of the vehicle model, k is the spring stiffness of the vehicle model, W is the vehicle weight of the vehicle model, θ is the approach angle of the vehicle model, L is the wheelbase of the vehicle model, and C is the vehicle length of the vehicle model.

[0028] Further, calculating the overall ground clearance of each vehicle model according to the overall ground clearance and passability parameters of each vehicle model includes:

[0029] Calculating the overall ground clearance of each vehicle model as: T total = T·G total , where T total is the overall ground clearance of the vehicle model, T is the passability parameter of the vehicle model, and G total is the overall ground clearance of the vehicle model.

[0030] The present invention provides an electronic device, including:

[0031] At least one processor; and,

[0032] A memory communicatively connected to at least one of the processors; wherein,

[0033] The memory stores instructions executable by at least one of the processors, and the instructions are executed by at least one of the processors so that at least one of the processors can execute the overall ground clearance complaint rate prediction method as described above.

[0034] The present invention provides a storage medium that stores computer instructions, and when a computer executes the computer instructions, it is used to execute all steps of the overall ground clearance complaint rate prediction method as described above.

[0035] The present invention provides a computer program product, including computer programs / instructions, and when the computer programs / instructions are executed by a processor, the overall ground clearance complaint rate prediction method as described above is implemented.

[0036] The present invention calculates the complaint rate by obtaining the original complaint data of multiple vehicle models, and calculates the overall ground clearance of each vehicle model, so as to fit the fitting curve of the overall ground clearance with respect to the complaint rate. When developing a new vehicle model, the to-be-tested ground clearance calculated for the new vehicle model is substituted into the fitting curve to obtain the complaint rate corresponding to the to-be-tested ground clearance. When designing a new vehicle model, the present invention can predict the complaint rate corresponding to the ground clearance of the vehicle model, so as to facilitate judging whether the complaint rate meets the requirements, and design and correct the ground clearance based on the complaint rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is the working flowchart of a method for predicting the overall ground clearance complaint rate according to an embodiment of the present invention;

[0038] Figure 2 is the working flowchart of a method for predicting the overall ground clearance complaint rate according to another embodiment of the present invention;

[0039] Figure 3Scatter plot of the overall vehicle ground clearance and complaint rate for an example of the present invention;

[0040] Figure 4 Schematic diagram of the vehicle chassis area division for an example of the present invention;

[0041] Figure 5 Schematic diagram of the complaint proportion of each area of the chassis in an example of the present invention;

[0042] Figure 6 Schematic diagram of the complaint rate and overall vehicle ground clearance data for an example of the present invention;

[0043] Figure 7 Flowchart of the working process of a method for predicting the vehicle ground clearance complaint rate in the best embodiment of the present invention;

[0044] Figure 8 Schematic diagram of the complaint rate prediction curve for an example of the present invention;

[0045] Figure 9 Schematic diagram of the hardware structure of an electronic device according to the present invention. Detailed implementation manners

[0046] The following further illustrates the detailed implementation manners of the present invention with reference to the accompanying drawings. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0047] As Figure 1 shown is the flowchart of the working process of a method for predicting the vehicle ground clearance complaint rate in an embodiment of the present invention, including:

[0048] Step S101, obtaining the original complaint data of multiple vehicle models;

[0049] Step S102, calculating the complaint rate of each vehicle model according to the original complaint data of each vehicle model;

[0050] Step S103, calculating the overall vehicle ground clearance of each vehicle model;

[0051] Step S104, fitting the complaint rates and the corresponding overall vehicle ground clearances of multiple vehicle models to obtain a fitting curve of the overall vehicle ground clearance with respect to the complaint rate;

[0052] Step S105, calculating the overall vehicle ground clearance of the vehicle model to be tested as the ground clearance to be tested, and substituting the ground clearance to be tested into the fitting curve to obtain the complaint rate corresponding to the ground clearance to be tested.

[0053] Specifically, the present invention can be applied to an electronic device with processing capabilities, such as a computer.

[0054] First, execute step S101 to obtain the original complaint data of multiple vehicle models.

[0055] Specifically, the original complaint data can be obtained by manually collecting the original word-of-mouth data of users for various vehicle models selected for comparison, or by automatically collecting the word-of-mouth data through software.

[0056] After obtaining the original word-of-mouth data, the data needs to be sorted again. Negative evaluations of the chassis are screened out as complaint word-of-mouth. In addition, some users think that a "low chassis" is stable, has a coupe-like feel, and an avant-garde shape, etc., which do not belong to complaint information, and this part of the data will be excluded during statistics to avoid affecting the accuracy of the complaint rate data.

[0057] Then execute step S102 to calculate the complaint rate of each vehicle model based on the original complaint data of each vehicle model.

[0058] Specifically, for each vehicle model, calculate the proportion of the number of complaint word-of-mouth in the word-of-mouth data to the total word-of-mouth of the vehicle model to obtain the complaint rate of each vehicle model.

[0059] Then execute step S103 to calculate the overall vehicle comprehensive ground clearance of each vehicle model.

[0060] Specifically, for each vehicle model in each original complaint data, calculate the overall vehicle comprehensive ground clearance based on the vehicle parameters.

[0061] Then execute S104 to fit the complaint rates of multiple vehicle models and the corresponding overall vehicle comprehensive ground clearances to obtain a fitting curve of the overall vehicle comprehensive ground clearance with respect to the complaint rate.

[0062] Specifically, after obtaining the overall vehicle comprehensive ground clearance and complaint rate (or called road interference complaint rate) of each vehicle model, the data of all competing vehicles can be summarized and plotted as a scatter plot, as Figure 3 shown, the X-axis is the complaint rate, and the Y-axis is the overall vehicle comprehensive ground clearance calculated above.

[0063] In some embodiments, assume that the quadratic polynomial equation that satisfies the best fit is y = ax 2 + bx + c, where x is the complaint rate and y is the overall vehicle comprehensive ground clearance. Substitute the overall vehicle comprehensive ground clearance and complaint rate data of the vehicle models in the case of Table 1 into the above formula, and solve it by the least squares method to obtain the quadratic regression equation curve of the overall vehicle comprehensive ground clearance with respect to the complaint rate.

[0064] Finally, perform step S105 to calculate the overall vehicle ground clearance of the vehicle model to be tested as the ground clearance to be tested, and substitute the ground clearance to be tested into the fitting curve to obtain the complaint rate corresponding to the ground clearance to be tested.

[0065] Specifically, the prediction method for the user complaint rate of the new vehicle road surface interference is as follows: Take the vehicle model under development as the vehicle model to be tested, calculate the overall vehicle ground clearance of the vehicle model to be tested as the ground clearance to be tested, and substitute the ground clearance to be tested into the y of the quadratic regression equation curve obtained by the least squares method to solve the corresponding x value as the complaint rate corresponding to the ground clearance to be tested.

[0066] The present invention calculates the complaint rate by obtaining the original complaint data of multiple vehicle models, and calculates the overall vehicle ground clearance of each vehicle model, thereby fitting a fitting curve of the overall vehicle ground clearance with respect to the complaint rate. When developing a new vehicle model, substitute the ground clearance to be tested calculated for the new vehicle model into the fitting curve to obtain the complaint rate corresponding to the ground clearance to be tested. The present invention can predict the complaint rate corresponding to the ground clearance of the vehicle model during the design of the new vehicle model, so as to facilitate judging whether the complaint rate meets the requirements, and perform design correction on the ground clearance based on the complaint rate.

[0067] As Figure 2 shown in the flowchart of the working process of a method for predicting the complaint rate of the vehicle ground clearance in another embodiment of the present invention, which includes:

[0068] Step S201, obtain the original complaint data of multiple vehicle models.

[0069] Step S202, calculate the complaint rate of each vehicle model according to the original complaint data of each vehicle model.

[0070] Step S203, calculate the vehicle ground clearance of each vehicle model.

[0071] In one embodiment, the calculation of the vehicle ground clearance of each vehicle model includes:

[0072] Divide the vehicle chassis into multiple regions;

[0073] Determine the weight of each region;

[0074] Calculate the average ground clearance of each region of each vehicle model;

[0075] Calculate the vehicle ground clearance of each vehicle model according to the weight of each region and the average ground clearance of each region of each vehicle model.

[0076] In one embodiment, the calculation of the vehicle ground clearance of each vehicle model according to the weight of each region and the average ground clearance of each region of each vehicle model includes:

[0077] Calculate the vehicle ground clearance of each vehicle model as:

[0078] Among them, G total is the overall ground clearance of the vehicle model, n is the number of regions, and r i is the weight of the i-th region, and G i is the average ground clearance of the i-th region of the vehicle model.

[0079] In one embodiment, the determining the weight of each region includes:

[0080] Calculating the proportion of regional complaints of each region among all vehicle models according to the original complaint data of all vehicle models;

[0081] Taking the proportion of regional complaints of each region as the weight of the region.

[0082] Step S204, calculating the passability parameter of each vehicle model.

[0083] In one embodiment, the calculating the passability parameter of each vehicle model includes:

[0084] Calculating the passability parameter of each vehicle model as:

[0085] Among them, T is the passability parameter of the vehicle model, k is the spring stiffness of the vehicle model, W is the vehicle weight of the vehicle model, θ is the approach angle of the vehicle model, L is the wheelbase of the vehicle model, and C is the vehicle length of the vehicle model.

[0086] Step S205, calculating the overall comprehensive ground clearance of each vehicle model according to the overall ground clearance and passability parameter of each vehicle model.

[0087] In one embodiment, the calculating the overall comprehensive ground clearance of each vehicle model according to the overall ground clearance and passability parameter of each vehicle model includes:

[0088] Calculating the overall comprehensive ground clearance of each vehicle model as: T total = T·G total where, T total is the overall comprehensive ground clearance of the vehicle model, T is the passability parameter of the vehicle model, and G total is the overall ground clearance of the vehicle model.

[0089] Step S206, fitting the complaint rate of multiple vehicle models and the corresponding overall comprehensive ground clearance to obtain a fitting curve of the overall comprehensive ground clearance with respect to the complaint rate.

[0090] Step S207, calculating the overall comprehensive ground clearance of the vehicle model to be tested as the ground clearance to be tested, and substituting the ground clearance to be tested into the fitting curve to obtain the complaint rate corresponding to the ground clearance to be tested.

[0091] Specifically, first, step S201 is executed to obtain the original complaint data of multiple vehicle models.

[0092] Specifically, the original complaint data can be obtained by manually collecting the original word-of-mouth data of users for various vehicle models selected for comparison, or by automatically collecting the word-of-mouth data through software.

[0093] After obtaining the original word-of-mouth data, the data needs to be sorted out again. Select the negative evaluations of the chassis from them as the complaint word-of-mouth. In addition, some users think that "low chassis" is stable to drive, has a coupe feeling, and an avant-garde shape, etc., which do not belong to the complaint information, and this part of the data will be excluded during statistics to avoid affecting the accuracy of the complaint rate data.

[0094] Then, step S202 is executed to calculate the complaint rate of each vehicle model according to the original complaint data of each vehicle model.

[0095] Specifically, for each vehicle model, calculate the proportion of the number of complaint word-of-mouth in the word-of-mouth data to the total word-of-mouth of the vehicle model to obtain the complaint rate of each vehicle model.

[0096] Then, step S203 is executed to calculate the overall ground clearance of each vehicle model.

[0097] In one embodiment, the calculation of the overall ground clearance of each vehicle model includes:

[0098] Divide the vehicle chassis into multiple regions;

[0099] Determine the weight of each region;

[0100] Calculate the average ground clearance of each region of each vehicle model;

[0101] Calculate the overall ground clearance of each vehicle model according to the weight of each region and the average ground clearance of each region of each vehicle model.

[0102] Specifically, as Figure 4 shown, divide the chassis 40 of the vehicle into multiple regions. The regional division is not unique and is specifically determined according to the design requirements.

[0103] In some embodiments, the regions include but are not limited to: the front bumper region 41, the front underbody panel region 42, the middle front part of the chassis region 43 (front of the battery pack), the middle part of the chassis region 44 (middle of the battery pack), the rear part of the chassis region 45 (rear of the battery pack), and the rear bumper region 46.

[0104] Then, determine the weight of each region, for example, determine the weights of the front bumper region 41, the front underbody panel region 42, the middle front part of the chassis region 43, the middle part of the chassis region 44, the rear part of the chassis region 45, and the rear bumper region 46 respectively.

[0105] Then calculate the average ground height above the ground for each area of each vehicle model.

[0106] Specifically, for each vehicle model, calculate the average ground height above the ground for each area of each vehicle model respectively. For example, calculate the average ground height above the ground for the front bumper area 41, the front lower guard area 42, the middle front part of the chassis area 43, the middle part of the chassis area 44, the rear part of the chassis area 45, and the rear bumper area 46 of each vehicle model respectively.

[0107] Among them, the ground height is the ground clearance of the vehicle. The average ground height above the ground for an area is the average of the ground heights at multiple measurement points in that area.

[0108] In some embodiments, select the vehicles to be compared. For each vehicle model, one or more vehicles can be selected for calculation respectively. For each vehicle, divide the chassis into i areas, and for each area, select m measurement points 411, 421, 431, 441, 451, 461 (red dots in the figure) to measure the ground height (excluding moving parts such as stabilizer bars and swing arms), and then calculate the average ground height above the ground for each area respectively.

[0109] In some embodiments, for the i-th area, the measured ground heights of each point are g i1 , g i2 , …, g imi . Calculate the average ground height above the ground for the i-th area of this vehicle as:

[0110]

[0111] Among them, G i is the average ground height above the ground for the i-th area, g ij is the ground height measured at the j-th point in the i-th area, and m i is the number of measurement points selected for ground height measurement in the i-th area.

[0112] For the case of selecting one vehicle for testing for one vehicle model, the average ground height above the ground for each area of this vehicle is used as the average ground height above the ground for each area of this vehicle model.

[0113] For the case of selecting multiple vehicles for testing for one vehicle model, the average of the average ground heights above the ground for the same area of multiple vehicles of this vehicle model is used as the average ground height above the ground for this area of this vehicle model.

[0114] Then, calculate the overall vehicle ground height for each vehicle model according to the weight of each area and the average ground height above the ground for each area of each vehicle model.

[0115] In this embodiment, by dividing the chassis into multiple areas, the overall vehicle ground height is calculated by integrating the weights of each area, and the measurement is more accurate.

[0116] In one embodiment, calculating the overall ground clearance of each vehicle model based on the weight of each region and the average ground clearance of each region of each vehicle model includes:

[0117] Calculating the overall ground clearance of each vehicle model as:

[0118] where G total is the overall ground clearance of the vehicle model, n is the number of regions, r i is the weight of the i-th region, and G i is the average ground clearance of the i-th region of the vehicle model.

[0119] Specifically, each vehicle model respectively performs a weighted calculation based on the average ground clearance of each region of the vehicle model obtained from the foregoing calculation to obtain the overall ground clearance of each vehicle model.

[0120] In this embodiment, based on the weights of each region, a weighted calculation is performed on the average ground clearance of each region to obtain the overall ground clearance.

[0121] In one embodiment, determining the weight of each region includes:

[0122] Calculating the proportion of regional complaints of each region among all vehicle models based on the original complaint data of all vehicle models;

[0123] Taking the proportion of regional complaints of each region as the weight of the region.

[0124] Specifically, considering that the complaint rates of users for different regions of the chassis are different, according to the proportion of regional complaints of each region of the chassis of all selected vehicle models, the weight r i of each region can be calculated.

[0125] The proportion of complaints is calculated for all vehicle models, that is, the number of complaint word-of-mouth in the original complaint data of all vehicle models is recorded as the total number of complaint word-of-mouth. The number of complaint word-of-mouth in each region among all vehicle models is counted as the regional complaint word-of-mouth number of the region. The proportion of regional complaints of each region is calculated as the regional complaint word-of-mouth number of the region divided by the total number of complaint word-of-mouth.

[0126] Then, the proportion of regional complaints of each region is taken as the weight of the region.

[0127] As Figure 5 shown is a schematic diagram of the proportion of complaints of each region of the chassis in an example of the present invention, where:

[0128] The proportion of complaints in the front bumper region 41 is 49%;

[0129] The proportion of complaints in the front lower guard region 42 is 21%;

[0130] The complaint ratio of the front-middle area 43 of the chassis is 10%;

[0131] The complaint ratio of the middle area 44 of the chassis is 10%;

[0132] The complaint ratio of the rear area 45 of the chassis is 5%;

[0133] The complaint ratio of the rear bumper area 46 is 5%.

[0134] Therefore, the weight of each corresponding area is shown in Table 1.

[0135] Table 1 Area Weight Table

[0136] Area Weight Front bumper 0.49 Front lower apron 0.21 Front middle part of chassis (front part of battery pack) 0.10 Middle part of chassis (middle part of battery pack) 0.10 Rear part of chassis (rear part of battery pack) 0.05 Rear bumper 0.05

[0137] In this embodiment, considering that the complaint rates of users for different areas of the chassis are different, the weights of the areas are determined according to the area complaint ratios of different areas of the chassis of all selected models, so that the areas with higher complaint rates have higher weights, and the overall vehicle ground height can more accurately reflect the complaints of users and better meet the needs of users.

[0138] Then, step S204 is executed to calculate the passability parameters of each model.

[0139] Specifically, the passability of the whole vehicle is also related to the spring stiffness, approach angle, vehicle weight, wheelbase and vehicle length. A passability parameter T calculated based on the spring stiffness, approach angle, vehicle weight, wheelbase and vehicle length is introduced. The larger T is, the better the passability.

[0140] In one of the embodiments, calculating the passability parameters of each model includes:

[0141] The passability parameters of each model are calculated as:

[0142] where T is the passability parameter of the model, k is the spring stiffness of the model, W is the vehicle weight of the model, θ is the approach angle of the model, L is the wheelbase of the model, and C is the vehicle length of the model.

[0143] This embodiment provides a specific method for calculating the passability parameter.

[0144] Step S205, calculate the overall vehicle comprehensive ground height of each model according to the overall vehicle ground height and the passability parameter of each model.

[0145] Specifically, in combination with the overall vehicle ground height level G total and the passability parameter T, calculate the overall vehicle comprehensive ground height.

[0146] In one embodiment, calculating the overall ground clearance of each vehicle model according to the overall ground clearance and passability parameters of each vehicle model includes:

[0147] Calculating the overall ground clearance of each vehicle model as: T total = T·G total , where T total is the overall ground clearance of the vehicle model, T is the passability parameter of the vehicle model, and G total is the overall ground clearance of the vehicle model.

[0148] This embodiment provides a specific method for calculating the overall ground clearance of a vehicle.

[0149] Step S206: Fit the complaint rates of multiple vehicle models and the corresponding overall ground clearances to obtain a fitting curve of the overall ground clearance with respect to the complaint rate.

[0150] Specifically, after obtaining the overall ground clearance of the vehicle model and the road interference complaint rate, all the data of the vehicle models as shown Figure 6 can be summarized and plotted as a scatter plot, as shown Figure 3 . The X-axis is the road interference complaint rate, and the Y-axis is the overall ground clearance T total calculated above.

[0151] Assume that the quadratic polynomial equation that satisfies the best fit is y = ax 2 + bx + c, where x is the complaint rate and y is the overall ground clearance. Substitute the overall ground clearance and complaint rate data of the vehicle models in the case of Table 1 into the above formula, and solve by the least squares method to obtain the quadratic regression equation curve of the overall ground clearance with respect to the complaint rate.

[0152] Finally, execute step S207: Calculate the overall ground clearance of the vehicle model to be tested as the ground clearance to be tested, and substitute the ground clearance to be tested into the fitting curve to obtain the complaint rate corresponding to the ground clearance to be tested.

[0153] Specifically, the prediction method for the user complaint rate of new vehicle road interference is: Take the vehicle model under development as the vehicle model to be tested, calculate the overall ground clearance of the vehicle model to be tested as the ground clearance to be tested, and substitute the ground clearance to be tested into y of the quadratic regression equation curve obtained by the least squares method to solve the corresponding x value as the complaint rate corresponding to the ground clearance to be tested.

[0154] In some embodiments, it further includes: if the complaint rate corresponding to the ground clearance of the vehicle to be tested is greater than or equal to the complaint rate threshold, adjust the design of the vehicle to be tested to increase the ground clearance of the vehicle to be tested, recalculate the overall integrated ground clearance of the vehicle to be tested as the ground clearance to be tested, substitute the ground clearance to be tested into the fitting curve, and obtain the complaint rate corresponding to the recalculated ground clearance to be tested until the complaint rate corresponding to the ground clearance to be tested is less than the complaint rate threshold.

[0155] In some embodiments, it further includes: if the complaint rate corresponding to the ground clearance of the vehicle to be tested is less than the complaint rate threshold, adjust the design of the vehicle to be tested to decrease the ground clearance of the vehicle to be tested, recalculate the overall integrated ground clearance of the vehicle to be tested as the ground clearance to be tested, substitute the ground clearance to be tested into the fitting curve, and obtain the complaint rate corresponding to the recalculated ground clearance to be tested until the complaint rate corresponding to the ground clearance to be tested is greater than or equal to the complaint rate threshold, and adopt the design with the lowest ground clearance among all designs with a complaint rate less than the complaint rate threshold as the optimal design of the vehicle to be tested.

[0156] As Figure 8 shown, as an example, during the development stage of a certain vehicle model XX, through fitting curve calculation, it can be obtained that the predicted road surface interference complaint rate is approximately 2.4%. At the same time, by comparing the complaint rate and ground clearance of competing vehicle models, it is judged that the ground clearance and road surface interference complaint rate of this vehicle model are at a relatively good level among competing vehicles. Considering that the handling and aerodynamic performance have not reached the standard, there is still room for further reduction of the ground clearance. After the ground clearance is reduced, prediction is carried out again through the fitting curve, and it is expected that the market complaint rate will deteriorate from 2.4% to 4.5%, still being at a medium level among competing vehicles, thus ensuring the achievement of various performances.

[0157] In this embodiment, when designing a new vehicle model, it can predict the complaint rate corresponding to the ground clearance of the vehicle model, thereby facilitating the judgment of whether the complaint rate meets the requirements, and making design corrections to the ground clearance based on the complaint rate. This embodiment collects and processes a large amount of data and can be automatically executed according to a preset cycle to ensure that the latest customer complaint information can be reflected in a timely manner. At the same time, this embodiment uses a quadratic fitting curve to accurately predict the complaint rate of the new vehicle market, rather than simply comparing the high level of competing vehicles, and the data accuracy is higher. Finally, the automated process of this embodiment can significantly improve the speed and efficiency of data processing and reduce labor costs.

[0158] As Figure 7 shown is the flowchart of the working process of a method for predicting the complaint rate of the overall vehicle ground clearance according to the best embodiment of the present invention, including:

[0159] Step S701, obtain the original data of the road surface interference complaints of competing vehicles;

[0160] Step S702, eliminate the data related to positive evaluations;

[0161] Step S703, calculate the customer complaint rate of road surface interference for each vehicle model;

[0162] Step S704, measure the ground clearance of the competing vehicle and calculate the passability parameters to obtain the overall ground clearance of the vehicle;

[0163] Step S705, summarize the data of all competing vehicles and plot them as a scatter plot, and draw a fitting curve;

[0164] Step S706, calculate the overall ground clearance of the vehicle under development and substitute it into the curve to obtain the predicted value of the complaint rate.

[0165] Among them, steps S701 to S703 are executed regularly.

[0166] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

[0167] As Figure 9 shown in the schematic diagram of the hardware structure of an electronic device according to the present invention, including:

[0168] At least one processor 901; and,

[0169] A memory 902 communicatively connected to at least one of the processors 901; wherein,

[0170] The memory 902 stores instructions executable by at least one of the processors. The instructions are executed by at least one of the processors so that at least one of the processors can execute the vehicle ground clearance complaint rate prediction method as described above.

[0171] Figure 9 One processor 901 is taken as an example.

[0172] The electronic device may further include: an input device 903 and a display device 904.

[0173] The processor 901, the memory 902, the input device 903, and the display device 904 may be connected by a bus or other means. In the figure, connection by a bus is taken as an example.

[0174] The memory 902, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as the program instructions / modules corresponding to the vehicle ground clearance complaint rate prediction method in the embodiments of the present application. For example, Figure 1 、Figure 2 The method flow shown. The processor 901 executes various functional applications and data processing by running the non-volatile software programs, instructions, and modules stored in the memory 902, that is, implements the vehicle ground high complaint rate prediction method in the above embodiments.

[0175] The memory 902 may include a program storage area and a data storage area. Among them, the program storage area can store the operating system and application programs required for at least one function; the data storage area can store data created according to the use of the vehicle ground high complaint rate prediction method, etc. In addition, the memory 902 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some embodiments, the memory 902 may optionally include a memory remotely set relative to the processor 901, and these remote memories can be connected to the device executing the vehicle ground high complaint rate prediction method through a network. Examples of the above network include but are not limited to the Internet, enterprise intranet, local area network, mobile communication network, and their combinations.

[0176] The input device 903 can receive the input user clicks and generate signal inputs related to the user settings and function controls of the vehicle ground high complaint rate prediction method. The display device 904 may include a display device such as a display screen.

[0177] When the one or more modules are stored in the memory 902 and run by the one or more processors 901, they execute the vehicle ground high complaint rate prediction method in any of the above method embodiments.

[0178] The present invention calculates the complaint rate by obtaining the original complaint data of multiple vehicle models, and calculates the overall vehicle ground high of each vehicle model, so as to fit the fitting curve of the overall vehicle ground high with respect to the complaint rate. When developing a new vehicle model, the to-be-tested ground high calculated for the new vehicle model is substituted into the fitting curve to obtain the complaint rate corresponding to the to-be-tested ground high. When designing a new vehicle model, the present invention can predict the complaint rate corresponding to the ground high of the vehicle model, so as to facilitate judging whether the complaint rate meets the requirements, and design and correct the ground high based on the complaint rate.

[0179] An embodiment of the present invention provides a storage medium, and the storage medium stores computer instructions, which are used to execute all steps of the vehicle ground high complaint rate prediction method as described above when the computer executes the computer instructions.

[0180] In the context of the present disclosure, a storage medium may be a tangible medium that can contain or store a program for use by or in connection with an instruction execution system, apparatus, or device. The storage medium may be a machine-readable signal medium or a machine-readable storage medium. Optionally, the storage medium may be a non-transitory computer-readable storage medium. For example, the non-transitory computer-readable storage medium may be ROM, Random Access Memory (RAM), Compact Disc ROM (CD-ROM), magnetic tape, floppy disk, and optical data storage devices, etc.

[0181] An embodiment of the present invention provides a computer program product, including a computer program / instructions, which, when executed by a processor, implement the vehicle ground high complaint rate prediction method as described above.

[0182] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A method for predicting high ground complaint rate of a vehicle, characterized in that: include: Obtain raw complaint data for multiple vehicle models; Calculate the complaint rate of each vehicle model based on the original complaint data of each vehicle model; Calculate the comprehensive ground height of each vehicle model; The complaint rates of multiple models and the corresponding comprehensive height of the whole vehicle are fitted to obtain the fitting curve of the comprehensive height of the whole vehicle with respect to the complaint rate; The comprehensive ground height of the vehicle of the to-be-tested vehicle model is calculated as the to-be-tested ground height, and the to-be-tested ground height is substituted into the fitting curve to obtain the complaint rate corresponding to the to-be-tested ground height.

2. The method for predicting high ground complaint rate of a vehicle according to claim 1, characterized in that: The calculation of the comprehensive ground height of each vehicle model includes: Calculate the ground height of each vehicle model; Calculate the passability parameters of each vehicle model; Based on the vehicle ground height and passability parameters of each model, the comprehensive ground height of each model is calculated.

3. The method for predicting high ground complaint rate of a vehicle according to claim 2, characterized in that: The calculation of the vehicle ground height of each vehicle model includes: Divide the vehicle chassis into multiple areas; Determine the weight of each region; Calculate the average ground height in each area for each vehicle model; The vehicle ground height of each model is calculated based on the weight of each area and the average ground height of each area of ​​each model.

4. The method for predicting high ground complaint rate of a vehicle according to claim 3, characterized in that: The above-mentioned method calculates the vehicle ground height of each vehicle model according to the weight of each area and the average ground height of each area of ​​each vehicle model, including: Calculate the ground height of each vehicle model as follows: Among them, G total is the vehicle height above ground of the model, n is the number of regions, r i is the weight of the ith region, G i is the average ground height of the i-th region of the vehicle model.

5. The method for predicting high ground complaint rate of a vehicle according to claim 3, characterized in that: Determining the weight of each region includes: Based on the original complaint data of all models, calculate the regional complaint ratio of each region among all models; The regional complaint ratio of each region is used as the weight of the region.

6. The method for predicting high ground complaint rate of a vehicle according to claim 2, characterized in that: The calculation of the passability parameters of each vehicle model includes: The passability parameters of each vehicle model are calculated as follows: Among them, T is the passability parameter of the vehicle type, k is the spring stiffness of the vehicle type, W is the weight of the vehicle type, θ is the approach angle of the vehicle type, L is the wheelbase of the vehicle type, and C is the length of the vehicle type.

7. The method for predicting high ground complaint rate of a vehicle according to claim 2, characterized in that: The above-mentioned method of calculating the comprehensive ground height of each vehicle model according to the ground height and passability parameters of each vehicle model includes: Calculate the comprehensive ground height of each vehicle model as: T total =T·G total , where T total is the comprehensive ground height of the vehicle model, T is the passability parameter of the vehicle model, G total It is the ground height of the whole vehicle of the described model.

8. An electronic device, characterized in that: include: at least one processor; as well as, a memory communicatively connected to at least one of the processors; wherein, The memory stores instructions executable by at least one of the processors, and the instructions are executed by at least one of the processors to enable at least one of the processors to execute the method for predicting high on-ground complaint rates of a vehicle as described in any one of claims 1 to 7.

9. A storage medium, characterized in that: The storage medium stores computer instructions, which, when executed by a computer, are used to execute all steps of the method for predicting a high ground complaint rate of a vehicle as described in any one of claims 1 to 7.

10. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instruction is executed by a processor, the method for predicting high ground complaint rate of a vehicle as described in any one of claims 1 to 7 is implemented.

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