A vehicle drivability optimization method, device, storage medium and electronic equipment

Abstract

The application provides a vehicle drivability optimization method, device, storage medium and electronic equipment, wherein the vehicle drivability optimization method comprises the following steps: inputting the formulated drivability objective standard into an automatic calibration system, and performing driving tests in different test working conditions with preset initial drivability correlation data; based on the comparison between the actual driving performance and the objective standard, the correlation data of the drivability response and jerk corresponding to the test working condition are automatically calibrated according to the comparison result, and the new calibration data is used for cyclic test until the actual driving performance meets the objective standard; and the drivability calibration corresponding to the test working condition is confirmed to be completed. By formulating the drivability objective standard and setting the matching automatic calibration system, the automatic calibration method is defined, the calibration target is clearer, the drivability parameters are automatically modified, and the calibration time of the engineer on the vehicle is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of vehicle drivability optimization, and particularly relates to a vehicle drivability optimization method, device, storage medium and electronic equipment. BACKGROUND

[0002] The main target of the whole vehicle drivability calibration is the acceleration pedal opening degree change, that is, when the acceleration or deceleration is dynamic, the whole vehicle has as few jerks as possible, and has a suitable acceleration or deceleration feeling.

[0003] As shown in Figure 11 The general steps of the existing whole vehicle drivability calibration are as follows: a calibration engineer performs desktop presetting, then performs calibration on the vehicle according to experience, a customer driving evaluation personnel tests and evaluates the calibration vehicle in combination with a competitive product and subjective feeling, the driving evaluation result is fed back to the calibration engineer for parameter adjustment, or the calibration engineer and the driving evaluation personnel jointly debug on the vehicle, and finally the customer's batch production requirement is met.

[0004] The above whole vehicle drivability calibration needs to rely on the experience and subjective feeling of a drivability expert, which depends on the working time and driving technology of the engineer, and at the same time, the acceleration and deceleration need to be calibrated and tested under different vehicle speeds, pedal opening degree intervals and different driving modes, and the calibration expert also needs to get on the vehicle to scan points, which is not efficient and consumes time and resources. SUMMARY

[0005] The application aims at the deficiencies of the prior art, and provides a vehicle drivability optimization method, device, storage medium and electronic equipment, which formulates an objective drivability standard, sets a matching automatic calibration system, defines an automatic calibration method, makes the calibration target clearer, realizes automatic modification of drivability parameters, and reduces the calibration time of the engineer on the vehicle.

[0006] Other characteristics and advantages of the present application will become apparent from the following detailed description, or will be learned by practice of the present application.

[0007] According to one aspect of an embodiment of the present application, a vehicle drivability optimization method is provided, which comprises the following steps:

[0008] Formulate an objective drivability standard, and input the objective drivability standard into an automatic calibration system to perform driving tests of different test conditions with preset initial drivability correlation data;

[0009] Based on the comparison between the actual driving performance and the objective standard, the correlation data of the drivability response and jerk corresponding to the test conditions are automatically calibrated according to the comparison result, and the new calibration data is cyclically tested until the actual driving performance meets the objective standard;

[0010] Confirm that the drivability calibration corresponding to the test conditions is completed.

[0011] Optionally, on the basis of the measured driving performance meeting the objective standard, it is confirmed that the driving performance of the corresponding test condition is calibrated, and the objective standard is adjusted according to the driving evaluation and subjective evaluation. The specific steps are as follows:

[0012] S10, under the corresponding test condition, whether the response passes the subjective evaluation is judged according to the driving evaluation, if yes, S20 is entered, otherwise S30 is entered;

[0013] S20, whether the jerk passes the subjective evaluation is judged according to the driving evaluation, if yes, S50 is entered, the driving performance calibration is ended, otherwise S40 is entered;

[0014] S30, the response associated data of the objective standard corresponding to the test condition is increased, input into the automatic calibration program, the driving response is automatically calibrated, and then S10 is entered for circulation;

[0015] S40, the jerk associated data of the objective standard corresponding to the test condition is reduced, input into the automatic calibration program, the driving jerk is automatically calibrated, and then S10 is entered for circulation;

[0016] S50, the driving performance calibration of the corresponding test condition is ended.

[0017] Optionally, different test conditions are grouped and set with priority, and under different grouping conditions, the test is carried out one by one in the order of priority from low to high.

[0018] Optionally, the driving response is automatically calibrated, which specifically includes the following steps:

[0019] S101, the speed, acceleration and torque in the driving performance parameters are obtained;

[0020] S201, the objective standard of the driving performance parameters corresponding to the test condition is selected, and the driving response evaluation parameter time is calculated;

[0021] S301, whether the objective standard is met is judged according to the preset formula, if yes, S501 is entered, the driver is prompted that the response calibration of the corresponding test condition is completed, and the process is ended; if no, S401 is entered;

[0022] S401, the speed and torque interval value of the corresponding test condition is multiplied by 1.05, and the cycle enters S101;

[0023] S501, the driver is prompted that the response calibration of the corresponding test condition is completed, and the process is ended.

[0024] Optionally, the driving jerk is automatically calibrated, which specifically includes the following steps:

[0025] S102, acquiring the vehicle speed, acceleration and torque in the drivability parameter;

[0026] S202, selecting the drivability parameter objective standard corresponding to the test working condition, and calculating the drivability jerk evaluation parameter time;

[0027] S302, judging whether the objective standard is met according to a preset formula, if yes, entering S502, prompting the driver that the jerk calibration corresponding to the test working condition is completed, and the flow ends; if no, entering S402;

[0028] S402, multiplying the vehicle speed and torque interval value corresponding to the test working condition by 0.95, and entering S102 circularly;

[0029] S502, prompting the driver that the jerk calibration corresponding to the test working condition is completed, and the flow ends.

[0030] Optionally, in the objective standard comparison of the drivability response standard:

[0031] When the absolute value of the acceleration increment or the acceleration decrement is greater than or equal to a preset acceleration threshold value, and the used time is less than or equal to a preset time threshold value, the objective standard is met, otherwise, the objective standard is not met.

[0032] Optionally, in the objective standard comparison of the drivability jerk standard:

[0033] When the absolute value of the vehicle jerk is less than or equal to a preset jerk threshold value during acceleration or deceleration, the objective standard is met, otherwise, the objective standard is not met.

[0034] According to another aspect of the embodiment of the application, a vehicle drivability optimization device is provided, comprising:

[0035] An input unit is configured to input the formulated drivability objective standard into an automatic calibration system, and a driver performs a driving test of different test working conditions with preset initial drivability correlation data;

[0036] A calibration unit is configured to automatically calibrate the correlation data of the drivability response and jerk corresponding to the test working condition according to the comparison result based on the comparison between the measured driving performance and the objective standard, and perform a circular test through new calibration data until the measured driving performance meets the objective standard;

[0037] A confirmation unit is configured to confirm that the drivability calibration corresponding to the test working condition is completed.

[0038] According to still another aspect of the embodiment of the application, a storage medium having computer readable instructions stored thereon is provided, when the computer readable instructions are executed by a processor of a computer, the computer executes the vehicle drivability optimization method.

[0039] According to another aspect of the embodiments of the present application, an electronic device is provided, comprising:

[0040] one or more processors;

[0041] a storage device configured to store one or more programs, when the one or more programs are executed by the one or more processors, the electronic device implements the vehicle drivability optimization method as described above.

[0042] It should be noted that the terms "first", "second", and the like similar terms used herein are merely intended to describe various constituent elements in the technical solutions, and do not constitute a limitation on the technical solutions, nor can they be understood as an indication or suggestion of the importance of the corresponding elements; elements with "first", "second", and the like similar terms indicate that in the corresponding technical solution, the element contains at least one.

[0043] In the technical solutions of the embodiments of the present application, by formulating the objective standard of drivability and defining the automatic calibration method, the calibration target is clearer, at the same time, the defined automatic calibration program realizes automatic modification of the drivability parameters, reduces the calibration time of the engineers on the vehicle, and through real-time modification of the objective standard, an online adjustment method of converting the subjective feeling of the driving evaluation personnel into the objective standard can be realized, which reduces the calibration time and the workload of the calibration engineers while improving the calibration quality. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the present application, and to facilitate further understanding of the technical effects, technical features and purposes of the present application, the present application will be described in detail below with reference to the accompanying drawings, which constitute an essential part of the specification and are used to illustrate the technical solutions of the present application together with the embodiments of the present application, but do not constitute a limitation on the present application.

[0045] The same reference numerals in the drawings represent the same components, specifically:

[0046] Figure 1 a flowchart of the vehicle drivability optimization method of the present application;

[0047] Figure 2 a drivability calibration flowchart of the automatic calibration system under a certain test working condition;

[0048] Figure 3 a broken line graph under the test working condition of the objective standard of drivability;

[0049] Figure 4 a reference graph of the evaluation parameter of the objective standard of drivability of the example test working condition;

[0050] Figure 5 a schematic diagram of the calibration sequence of the example drivability test working condition;

[0051] Figure 6 Key parameter fold line chart for vehicle acceleration and deceleration driving performance;

[0052] Figure 7 Flow chart of response automatic calibration method based on objective criteria;

[0053] Figure 8 Flow chart of jerk automatic calibration method based on objective criteria;

[0054] Figure 9 Block diagram of vehicle driving performance optimization device of the present application;

[0055] Figure 10 Structural schematic diagram of computer system of example electronic device;

[0056] Figure 11 Schematic diagram of example vehicle driving performance calibration flow;

[0057] Figure 12 Schematic diagram of vehicle driving performance calibration control torque during acceleration;

[0058] Figure 13 Schematic diagram of pure electric vehicle driving performance calibration torque strategy and parameters;

[0059] Figure 14 Table diagram of pure electric vehicle driving performance calibration parameters during acceleration;

[0060] Figure 15 Table diagram of pure electric vehicle driving performance calibration parameters during deceleration. DETAILED DESCRIPTION

[0061] The application will be further described below in conjunction with the drawings and embodiments. However, the example embodiments can be implemented in various forms and should not be understood as being limited to the examples set forth herein; on the contrary, these embodiments are provided so that the application will be more comprehensive and complete, and the ideas of the example embodiments will be fully conveyed to those skilled in the art.

[0062] In addition, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the technology can be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.

[0063] The block diagrams shown in the drawings are merely functional entities, and do not necessarily have to correspond to physically independent entities. That is, the functional entities can be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0064] The flowcharts shown in the drawings are merely exemplary illustrations, and do not necessarily include all contents and operations / steps, nor are they necessarily executed in the order described. For example, some operations / steps can be further divided, and some operations / steps can be combined or partially combined, so that the actual execution order can be changed according to actual conditions.

[0065] It should be noted that "multiple" referred to herein means two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0066] As shown in Figure 12 , the variable of the whole vehicle drivability calibration control is torque. For example, when accelerating, the driver steps on the accelerator pedal opening and the pedal demand torque increases instantaneously, which means that the driver has an acceleration intention, and the pedal demand torque increases instantaneously, which realizes the acceleration of the whole vehicle. However, if the torque is not subjected to drivability filtering control, the torque will change too fast, and the whole vehicle transmission system will be subjected to the sudden torque, which will cause the whole vehicle to jerk. The drivability calibration will filter the pedal demand torque and perform other processing. In the case that the acceleration performance is acceptable, the final torque changes slowly to achieve the foregoing goal. When decelerating, the pedal demand torque decreases, and the same drivability filtering control is needed.

[0067] As shown in Figure 13 , the power source of the pure electric vehicle is the motor. Compared with the engine, the motor only needs to calibrate the electric torque, the torque response has almost no delay, and the torque accuracy is higher. The whole vehicle drivability has a natural advantage over the traditional engine vehicle, so the drivability strategy design of the pure electric vehicle is simpler, and the calibration parameters are fewer. Compared with the traditional engine project, the pure electric project has recycling, so the pedal end demand torque has a negative value. As shown in the figure, the pure electric vehicle mainly adjusts two parameters: when accelerating, the acceleration torque gradient calibration parameter is adjusted; when decelerating, the deceleration torque gradient calibration parameter is adjusted.

[0068] The problems of the driving performance of the pure electric vehicle mainly include: 1. If the torque changes too fast, the transmission system switching will cause the whole vehicle to jerk, and the solution is to reduce the torque gradient in the corresponding area; 2. If the torque changes too slowly, it will cause the whole vehicle to accelerate too slowly or the deceleration feeling to be too weak, and the solution is to increase the torque gradient in the corresponding area. Especially near the 0NM torque, if the calibration is too large, it will cause the jerk when the torque switches positively and negatively, and if the calibration is too small, it will cause the torque to change too slowly, and a suitable value needs to be calibrated. Therefore, during real vehicle calibration, points need to be swept at different vehicle speeds and throttle openings, and the torque gradient in the corresponding area is calibrated according to the whole vehicle jerk and acceleration or deceleration feeling, and after calibration, the results are verified again in this condition. For example, if the jerk occurs at a vehicle speed of 40km / h and a wheel end torque of 400NM, then the calibration in the MAP at this point is reduced, and the reduction is 5% each time; if the acceleration or deceleration feeling is too weak at a vehicle speed of 40km / h and a wheel end torque of 400NM-1800NM without jerk, then the torque gradient in this area is increased. Finally, the calibration results of acceleration are shown in Table 1, and the calibration results of deceleration are shown in Table 2, where the horizontal coordinate is the motor torque, the vertical coordinate is the vehicle speed, and the calibration value is in units of NM / S; under different pedal openings, the maximum value in the table is different, and the larger the opening, the larger the torque. The calibration parameters are shown in the table in the figure, and the higher the vehicle speed, the faster the rate, and the larger the absolute value of the torque, the faster the rate. The driving performance is generally calibrated in some specific conditions, and after the typical conditions are calibrated, the values of the remaining conditions are directly smoothed according to the rules, and in addition, different tables need to be calibrated in different driving modes. Figure 14 Figure 15 The calibration parameters are shown in the table in the figure, and the higher the vehicle speed, the faster the rate, and the larger the absolute value of the torque, the faster the rate. The driving performance is generally calibrated in some specific conditions, and after the typical conditions are calibrated, the values of the remaining conditions are directly smoothed according to the rules, and in addition, different tables need to be calibrated in different driving modes.

[0069] In order to clearly disclose the present application, the above content is taken as a technical reference for whole vehicle driving performance calibration.

[0070] As shown in Figure 1 , the present application provides a vehicle driving performance optimization method, comprising the following steps:

[0071] The formulated driving performance objective standard is input into an automatic calibration system, and a driver evaluator performs driving tests in different test conditions with preset initial driving performance correlation data;

[0072] Based on the comparison between the measured driving performance and the objective standard, the correlation data of the driving performance response and jerk corresponding to the test conditions are automatically calibrated according to the comparison results, and the new calibration data is tested in a loop until the measured driving performance meets the objective standard;

[0073] The driving performance calibration corresponding to the test conditions is confirmed to be completed.

[0074] By formulating the driving performance objective standard, the driving performance correlation data is automatically calibrated, the frequency of manual calibration by engineers is reduced, and the optimization efficiency of the driving performance is improved.

[0075] ​In some embodiments, as shown in Figure 2 After the actual driving performance meets the objective standard, the objective standard is adjusted according to the subjective feeling and subjective evaluation of the driving evaluator or the calibration engineer before the driving performance calibration of the corresponding test condition is completed, and the specific steps are as follows:

[0076] S10, under the corresponding test condition, whether the response passes the subjective evaluation is judged according to the subjective feeling of the driving evaluator, if yes, S20 is entered, otherwise S30 is entered;

[0077] S20, whether the jerk passes the subjective evaluation is judged according to the subjective feeling of the driving evaluator, if yes, S50 is entered, the driving performance calibration is completed, otherwise S40 is entered;

[0078] S30, the driving evaluator or the calibration engineer increases the response related data of the objective standard corresponding to the test condition according to the subjective feeling, inputs into the automatic calibration program, and automatically calibrates the driving performance response, and then enters S10 loop;

[0079] S40, the driving evaluator or the calibration engineer reduces the jerk related data of the objective standard corresponding to the test condition according to the subjective feeling, inputs into the automatic calibration program, and automatically calibrates the driving performance jerk, and then enters S10 loop;

[0080] S50, the driving performance calibration of the corresponding test condition is completed.

[0081] Through the above method, the data is automatically calibrated, the driving performance objective standard of response and / or jerk is adjusted in real time according to the actual driving experience, the objective standard is relatively flexible, the parameters of the objective standard are manually modified on site, and then the automatic adjustment of the driving performance parameters is performed, that is, the automatic calibration can be realized without the presence of the calibration engineer for joint debugging, so that the calibration quality is improved, and the calibration time and the workload of the calibration engineer are reduced.

[0082] It should be noted that the driving performance objective standard setting method of the present application has the following specific contents:

[0083] Firstly, the following several key parameters are defined, including pedal opening, gear, vehicle speed, vehicle acceleration and vehicle jerk.

[0084] Pedal opening: the acceleration pedal of the pure electric vehicle is equivalent to the throttle of the traditional engine vehicle, the pedal opening is 0% when the throttle is not stepped on, and the pedal opening is 100% when the throttle is stepped to the bottom. The signal can be obtained from the VCU; if the acceleration pedal is increased, it represents that the driver has an acceleration intention, and vice versa, the acceleration pedal is reduced, which represents that the driver has a deceleration intention.

[0085] Motor torque: as shown in Figure 14 and 15In the illustrated table, the abscissa is the torque after driving performance processing, denoted by Trq.

[0086] Gear: The driving performance of the present application when advancing is analyzed, and the case when retreating is similar, and it is further explained that the pure electric vehicle model generally has only one gear when advancing, i.e., there is no gear shifting condition when advancing.

[0087] Vehicle speed: As a basic signal, most pure electric projects obtain the vehicle speed through the ABS wheel speed signal, which can be directly obtained in the pure electric vehicle VCU, the English name is Vehicle speed, generally abbreviated as v, the unit in the VCU is km / h, which can be converted to m / s;

[0088] Vehicle acceleration: According to the definition of physics, the ratio of the change in speed to the time used is called acceleration, which is a physical quantity describing the speed change of an object. When the accelerator pedal is increased, the acceleration will be greater than 0, and vice versa. The signal is generally obtained by arranging a longitudinal acceleration sensor on the vehicle seat or other positions, and some projects also have this signal in other controllers, such as the vehicle body electronic stability controller, which can be directly connected to the VCU for use. The English name of acceleration is Acceleration, generally abbreviated as a, and the commonly used unit is m / s2;

[0089] a = Δv / Δt (1)

[0090] In the formula, Δv is the change in speed, and Δt is the time when the speed change occurs.

[0091] Vehicle jerk: According to the definition of physics, the change rate of vehicle acceleration is called jerk, and a constant acceleration indicates that the object is subjected to a steady force. However, if the force suddenly changes, people will feel uncomfortable, even painful. Jerk can be used as an index to judge the degree of driving comfort. Zero jerk is the most comfortable. The present application derives the jerk signal used to judge the jerk of the driving performance from the above acceleration signal every 50ms. The English name of jerk is Jerk, generally abbreviated as j, and the commonly used unit is m / s3.

[0092] j = Δa / Δt (2)

[0093] In the formula, Δa is the change in acceleration, and Δt is the time when the acceleration change occurs.

[0094] According to the above Figure 14 and 15The table content shown, determine test conditions, the goal is to put the table completely calibrated. Exemplarily explained, 5% within the slight pedal change, at this time the pedal demand torque changes little, therefore the vehicle transmission system will not be subjected to torque mutation caused by jerk, these conditions have no driving problems; In addition, according to the change rule in the foregoing table, all points do not need to be tested, only some typical conditions need to be defined.

[0095] The torque increases from the left of the table to a certain value; The torque decreases from a certain point greater than 0 on the abscissa of the table to the left. Figure 14 Figure 15 The torque increases from the left of the table to a certain value; The torque decreases from a certain point greater than 0 on the abscissa of the table to the left.

[0096] In summary, as shown in Figure 3 , the conditions of the objective standard are defined with pedal opening and vehicle speed as two dimensions, as the accelerator pedal increases, the time required to accelerate to a certain speed is less and less, but the deceleration time is basically the same.

[0097] Exemplarily explained, the vehicle speed is divided into three intervals, which can be more, 0-40km / h, 40-80km / h, 80-120km / h respectively during acceleration, corresponding to Figure 3 , x is 0km / h, 40km / h, 80km / h respectively. From large to small during deceleration, corresponding to the maximum value of the different abscissa torque values in the tables shown in Figure 14 and 15 . The pedal opening is divided into four amplitudes, which can be more, 0-25%, 0-50%, 0-75%, 0-100% respectively during acceleration. From large to small during deceleration, corresponding to the maximum value of the different abscissa torque values in the tables shown in Figure 14 and 15 . The standard table 3 shown in Figure 4 is formulated, a total of 12 driving conditions of the objective standard evaluation parameters of the driving conditions.

[0098] As shown in Figure 5 , different test conditions are grouped and priority is set, and under different grouping conditions, the test is carried out one by one in the order from low to high priority.

[0099] As shown in the table Figure 4 , 12 conditions are defined according to the vehicle speed and pedal opening, corresponding to different areas in the tables shown in Figure 14 and 15 , wherein the different vehicle speeds correspond to different areas in the vertical coordinates of the tables shown in Figure 14 and 15 ; But because the pedal and torque will overlap, resulting in the same vehicle speed interval and different pedal openings, each condition corresponds to Figure 14 , 15 ​The abscissa region of the table shown can have overlap, that is, two working conditions are required for the same Figure 14 And 15 The calibration direction of the table shown can be opposite, so the application defines priority for different test conditions to ensure that the test condition with high priority meets the drivability standard. The priority is defined according to experience or customer demand, and the working condition with low priority is calibrated first, and the working condition with high priority is calibrated last, so as to ensure that the final data meets the working condition with high priority. At the same time, different speed intervals do not affect each other, and can be calibrated synchronously.

[0100] The objective standard under different working conditions is shown in the table Figure 4 It should be noted that the specific numerical value of the parameter meeting the objective standard mainly has three sources, one is to obtain the threshold value according to the measured results of a competitive vehicle model; two is to set the threshold value according to the experience of a drivability calibration expert; three is to modify the threshold value according to the subjective feeling of a driver evaluation personnel or a calibration engineer, and to convert the subjective feeling into a written objective standard.

[0101] Exemplarily, as shown in Figure 4 And Figure 6 The application adopts the time required for the absolute value of the acceleration change to exceed a certain threshold value from the pedal opening degree change as the evaluation parameter of the acceleration and deceleration response, and considers that the drivability response standard is met through the inequality of the test time and the objective standard threshold time, and is expressed by the following expression:

[0102] |Δa|≥THa (3)

[0103] t≤THt (4)

[0104] In the formula, Δa is the acceleration increment from the start of the pedal opening degree change in acceleration, and is the acceleration decrement in deceleration, THa is the acceleration threshold value for determining that the acceleration or deceleration response meets the drivability standard, which can be set to 1 m / s2 according to experience; t is the time required to meet the formula |Δa|≥THa, THt is the time threshold value for determining that the acceleration or deceleration response meets the drivability standard, the greater THt is, the slower the torque changes, and the longer the response time is. The value can be adjusted according to the test results of a benchmark vehicle model or experience or subjective feeling.

[0105] Exemplarily, the application adopts the absolute value of the jerk obtained by differentiating the acceleration signal every 50 ms as the evaluation parameter of the acceleration and deceleration jerk degree, and considers that the drivability jerk standard is met through the inequality of the absolute value of the jerk and the objective standard threshold.

[0106] |j|≤THj (5)

[0107] In the formula, j is the whole vehicle jerk during acceleration or deceleration, THj is the threshold value for determining whether the acceleration or deceleration jerk meets the driving performance standard, and the greater THj is, the faster the torque changes, and the greater the jerk trend is. THj can be adjusted according to the test results of a benchmark vehicle model or experience or subjective feelings.

[0108] In some embodiments, as shown in FIG. 1, the response of the driving performance is automatically calibrated, specifically including the following steps: Figure 7

[0109] S101, obtaining the vehicle speed, acceleration and torque in the driving performance parameters;

[0110] S201, selecting the objective standard of the driving performance parameters corresponding to the test working condition, and calculating the driving performance response evaluation parameter time;

[0111] S301, judging whether the objective standard is met according to a preset formula, if yes, entering S501, prompting the driver that the response calibration corresponding to the test working condition is completed, and the flow ends; if no, entering S401;

[0112] S401, multiplying the vehicle speed and torque interval value corresponding to the test working condition by 1.05 (the value can be manually adjusted), and entering S101 in a loop;

[0113] S501, prompting the driver that the response calibration corresponding to the test working condition is completed, and the flow ends.

[0114] In some embodiments, as shown in FIG. 2, the jerk of the driving performance is automatically calibrated, specifically including the following steps: Figure 8

[0115] S102, obtaining the vehicle speed, acceleration and torque in the driving performance parameters;

[0116] S202, selecting the objective standard of the driving performance parameters corresponding to the test working condition, and calculating the driving performance jerk evaluation parameter time;

[0117] S302, judging whether the objective standard is met according to a preset formula, if yes, entering S502, prompting the driver that the jerk calibration corresponding to the test working condition is completed, and the flow ends; if no, entering S402;

[0118] S402, multiplying the vehicle speed and torque interval value corresponding to the test working condition by 0.95 (the value can be manually adjusted), and entering S102 in a loop;

[0119] S502, prompting the driver that the jerk calibration corresponding to the test working condition is completed, and the flow ends.

[0120] Figure 9 A block diagram of a vehicle driving performance optimization device according to an embodiment of the present application is shown. ​​

[0121] As Figure 9 shown, according to a vehicle drivability optimization device of the present application, comprising:

[0122] An input unit is configured to input the formulated objective standard of drivability into an automatic calibration system, and a driver performs a driving test under different test conditions with preset initial data of drivability correlation;

[0123] A calibration unit is configured to automatically calibrate the data of drivability response and jerk corresponding to the test conditions based on the comparison between the measured driving performance and the objective standard, and through a new calibration data cycle test until the measured driving performance meets the objective standard;

[0124] A confirmation unit is configured to confirm the end of the calibration of drivability corresponding to the test conditions.

[0125] It should be noted that the vehicle drivability optimization device provided by the above embodiment and the vehicle drivability optimization method provided by the above embodiment belong to the same concept, wherein the specific manner in which each unit performs the operation has been described in detail in the method embodiment, which will not be described here.

[0126] Embodiments of the present application also provide an electronic device, comprising:

[0127] One or more processors;

[0128] A storage device is configured to store one or more programs, when the one or more programs are executed by the one or more processors, so that the charger implements the above-mentioned vehicle drivability optimization method.

[0129] Figure 10 The structure of the computer system of the electronic device suitable for implementing the embodiments of the present application is shown.

[0130] It should be noted that, Figure 10 The computer system of the electronic device shown is only an example, and should not limit the functions and use range of the embodiments of the present application.

[0131] As Figure 10As shown, the computer system includes a central processing unit (CPU), which can perform various appropriate actions and processes according to programs stored in a read-only memory (ROM) or loaded into a random access memory (RAM) from a storage section, for example, the method described in the above embodiments. In the RAM, various programs and data required for the operation of the system are also stored. The CPU, the ROM, and the RAM are connected to each other through a bus. An input / output (I / O) interface is also connected to the bus.

[0132] Connected to the I / O interface are an input section including a keyboard, a mouse, etc.; an output section including a display device such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section including a hard disk, etc.; and a communication section including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface as necessary. A removable recording medium such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is attached to the drive as necessary, so that a computer program read out therefrom is installed into the storage section as necessary.

[0133] In particular, according to embodiments of the present application, the processes described above with reference to the flowcharts can be implemented as a computer software program. For example, embodiments of the present application include a computer program product comprising a computer program carried on a computer readable medium, the computer program containing a computer program for executing the method shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via the communication section, and / or installed from a removable recording medium. When the computer program is executed by a central processing unit (CPU), various functions defined in the system of the present application are performed.

[0134] It should be noted that the computer-readable medium in the embodiments of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination thereof. The computer-readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination thereof. More specific examples of the computer-readable storage medium can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this application, the computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or apparatus. In this application, the computer-readable signal medium can include a data signal carrying computer-readable computer programs in a baseband or as a part of a carrier wave. Such a propagated data signal can take on various forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium that can transmit, propagate or transport programs for use by or in connection with an instruction execution system, device or apparatus. The computer programs contained in the computer-readable medium can be transmitted by any suitable medium, including but not limited to wireless, wired, or the like, or any suitable combination thereof.

[0135] The flowcharts and block diagrams in the drawings illustrate the possible implementation architectures, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In the flowcharts or block diagrams, each block can represent a module, a program segment or a part of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur in different orders than that shown in the drawings. For example, two blocks that are shown in succession can actually be executed substantially in parallel, and sometimes in reverse order, depending on the involved functions. It should also be noted that each block in the block diagrams or flowcharts, and the combination of blocks in the block diagrams or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0136] The units described in the embodiments of the present application can be implemented by software, or can be implemented by hardware, and the described units can also be arranged in a processor. In some cases, the names of the units do not constitute a limitation on the units themselves.

[0137] As another aspect, the present application also provides a computer readable storage medium having computer readable instructions stored thereon, which, when executed by a processor of a computer, cause the computer to perform the lead-acid battery charging method. The computer readable storage medium carries one or more programs, which, when executed by the electronic device, cause the electronic device to implement the vehicle drivability optimization method described in the above embodiments.

[0138] It should be noted that although several modules or units of the device for action execution are mentioned in the above detailed description, such division is not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided into several modules or units.

[0139] From the above description of the embodiments, those skilled in the art can easily understand that the example embodiments described herein can be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solutions according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a U disk, a mobile hard disk, etc.) or a network, and includes several instructions to make a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) execute the methods according to the embodiments of the present application.

[0140] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice in the art to which the application pertains.

[0141] It should be understood that the present application is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be effected therein by those skilled in the art without departing from the scope of the application. The scope of the application should be limited only by the appended claims.

Claims

1. A vehicle drivability optimization method characterized by, Comprise the following steps: The formulated driving objective standard is input into the automatic calibration system, and the initial driving correlation data is preset for driving test under different test conditions; Based on the comparison between the measured driving performance and the objective standard, the driving response and jerk correlation data corresponding to the test condition are automatically calibrated according to the comparison result, and the new calibration data is used for cycle test until the measured driving performance meets the objective standard; According to the driving evaluation feeling and subjective evaluation, the objective standard is adjusted, and the driving calibration corresponding to the test condition is confirmed to be completed, and the specific steps are as follows: S10, under the corresponding test condition, whether the response passes the subjective evaluation is judged according to the driving evaluation feeling, if yes, enter S20, otherwise enter S30; S20, whether the jerk passes the subjective evaluation is judged according to the driving evaluation feeling, if yes, enter S50, end the driving calibration, otherwise enter S40; S30, increase the response correlation data of the objective standard corresponding to the test condition, input into the automatic calibration program, automatically calibrate the response of driving, and then enter S10 cycle; S40, reduce the jerk correlation data of the objective standard corresponding to the test condition, input into the automatic calibration program, automatically calibrate the jerk of driving, and then enter S10 cycle; S50, the driving calibration corresponding to the test condition is completed.

2. The vehicle drivability optimization method according to claim 1, characterized by, Also include: Different test conditions are grouped and priority is set, and under different grouping conditions, test is carried out in order from low to high priority.

3. The vehicle drivability optimization method according to claim 1, characterized by, The response of driving is automatically calibrated, which specifically includes the following steps: S101, get the speed, acceleration and torque in the driving parameter; S201, select the driving parameter objective standard corresponding to the test condition, and calculate the driving response evaluation parameter time; S301, whether the objective standard is met is judged according to the preset formula, if yes, enter S501, prompt the driver, and the response calibration corresponding to the test condition is completed, and the process is ended; If not, enter S401; S401, multiply the speed and torque interval value corresponding to the test condition by 1.05, and enter S101 cycle; S501, prompt the driver, and the response calibration corresponding to the test condition is completed, and the process is ended.

4. The vehicle drivability optimization method according to claim 1, characterized by, The jerk of driving is automatically calibrated, which specifically includes the following steps: S102, get the speed, acceleration and torque in the driving parameter; S202, select the driving parameter objective standard corresponding to the test condition, and calculate the driving jerk evaluation parameter time; S302, whether the objective standard is met is judged according to the preset formula, if yes, enter S502, prompt the driver, and the jerk calibration corresponding to the test condition is completed, and the process is ended; If not, enter S402; S402, multiply the speed and torque interval value corresponding to the test condition by 0.95, and enter S102 cycle; S502, prompt the driver, and the jerk calibration corresponding to the test condition is completed, and the process is ended.

5. The vehicle drivability optimization method according to claim 3, characterized by, In the objective standard comparison of driving response standard: When the absolute value of acceleration increment or acceleration reduction is greater than or equal to the preset acceleration threshold value, and the used time is less than or equal to the preset time threshold value, the objective standard is met, otherwise, the objective standard is not met.

6. The vehicle drivability optimization method according to claim 4, characterized by, In the objective standard of the driving jerkiness criterion: When accelerating or decelerating, the absolute value of the vehicle jerkiness is less than or equal to the preset jerkiness threshold, the objective criterion is met, otherwise, the objective criterion is not met.

7. A vehicle drivability optimization device, comprising: An input unit for inputting the formulated drivability objective criterion into an automatic calibration system, and a driver performs driving tests in different test conditions with preset initial drivability correlation data; A calibration unit for automatically calibrating the drivability response and jerkiness correlation data corresponding to the test conditions according to the comparison results based on the comparison between the measured driving performance and the objective criterion, and the new calibration data is used for cycle test until the measured driving performance meets the objective criterion; A confirmation unit for adjusting the objective criterion according to the driver's feeling and subjective evaluation, and confirming the end of drivability calibration corresponding to the test conditions, the specific process is as follows: S10, in the corresponding test condition, judge whether the response passes the subjective evaluation according to the driver's feeling, if yes, go to S20, otherwise go to S30; S20, judge whether the jerkiness passes the subjective evaluation according to the driver's feeling, if yes, go to S50, end the drivability calibration, otherwise go to S40; S30, increase the response correlation data of the objective criterion corresponding to the test condition, input into the automatic calibration program, and automatically calibrate the response of the driving, then go to S10 cycle; S40, reduce the jerkiness correlation data of the objective criterion corresponding to the test condition, input into the automatic calibration program, and automatically calibrate the jerkiness of the driving, then go to S10 cycle; S50, the drivability calibration corresponding to the test condition is ended.

8. A storage medium, characterized by The computer readable instructions stored thereon, when executed by the processor of the computer, make the computer execute the vehicle drivability optimization method of any one of claims 1-6.

9. An electronic device, comprising: Comprising: One or more processors; A storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, so that the electronic device realizes the vehicle drivability optimization method as claimed in any one of claims 1-6.

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