Vehicle driving performance optimization method and device, vehicle and storage medium

Abstract

The present invention proposes a vehicle driving performance optimization method and device, a vehicle and a storage medium, the method comprising: when determining that the vehicle is in an acceleration condition, obtaining the vehicle's speed parameter and the opening of the accelerator pedal; determining the basic torque slope of the drive motor according to the vehicle's speed parameter; determining the torque rise slope of the drive motor according to the basic torque slope, the opening of the accelerator pedal and the vehicle's speed parameter; and performing a drivability filter on the required torque of the drive motor according to the torque rise slope. The present invention determines the torque rise slope of the drive motor by introducing the vehicle's speed parameter, and associates the vehicle's speed parameter, such as the size of the vehicle, with the performance of the drivability filter, so as to achieve the torque response requirements under different vehicle speeds and different accelerator pedal openings, thereby improving the vehicle's drivability.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a vehicle driving performance optimization method and device, a vehicle and a storage medium. Background Art

[0002] The drive motor on the front axle of the vehicle is connected to the wheels through a fixed wheel speed ratio, and the torque filtering of the drive motor is related to the drivability of the entire vehicle.

[0003] However, under specific acceleration conditions, the drivability filtering of the drive motor cannot meet the correction requirements of different vehicle speeds and different accelerator pedals, and cannot guarantee the torque response of the vehicle at different speeds. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, the first object of the present invention is to propose a vehicle driving performance optimization method, which can achieve torque response requirements under different vehicle speeds and different accelerator pedal openings, thereby improving the vehicle's driving performance.

[0006] To this end, a second object of the present invention is to provide a device for optimizing vehicle driving performance.

[0007] To this end, a third object of the present invention is to provide a vehicle.

[0008] To this end, a fourth object of the present invention is to provide a computer-readable storage medium.

[0009] In order to achieve the above-mentioned purpose, an embodiment of the first aspect of the present invention proposes a method for optimizing vehicle driving performance, the method comprising: when determining that the vehicle is in an acceleration condition, obtaining the speed parameters of the vehicle and the opening of the accelerator pedal; determining the basic torque slope of the drive motor according to the speed parameters of the vehicle; determining the torque rise slope of the drive motor according to the basic torque slope, the opening of the accelerator pedal and the speed parameters of the vehicle; and performing drivability filtering on the required torque of the drive motor according to the torque rise slope.

[0010] According to the vehicle driving performance optimization method of an embodiment of the present invention, the torque rising slope of the driving motor is determined by introducing the vehicle speed parameters, and the vehicle speed parameters such as the size of the vehicle are associated with the performance of the drivability filter to achieve the torque response requirements under different vehicle speeds and different accelerator pedal openings, thereby improving the vehicle's driving performance.

[0011] In some embodiments, the speed parameters of the vehicle include the vehicle speed or the rotational speed of the drive motor, and the basic torque slope of the drive motor is determined according to the vehicle speed parameters, including: inputting the vehicle speed or the rotational speed of the drive motor into a preset correspondence table of vehicle speed parameters-basic torque slope to determine the basic torque slope corresponding to the vehicle speed or the rotational speed of the drive motor.

[0012] In some embodiments, the speed parameter of the vehicle includes the vehicle speed or the rotational speed of the drive motor, and the torque rise slope of the drive motor is determined according to the basic torque slope, the opening of the accelerator pedal and the speed parameter of the vehicle, including: inputting the opening of the accelerator pedal and the speed of the vehicle into a correspondence table consisting of a preset accelerator pedal opening-vehicle speed parameter-basic torque slope correction coefficient, or inputting the opening of the accelerator pedal and the rotational speed of the drive motor into a correspondence table consisting of a preset accelerator pedal opening-vehicle speed parameter-basic torque slope correction coefficient to determine a target correction coefficient corresponding to the accelerator pedal opening and the vehicle speed parameter; determining the torque rise slope of the drive motor according to the target correction coefficient and the basic torque slope.

[0013] In some embodiments, determining the torque rise slope of the drive motor according to the target correction coefficient and the basic torque slope includes: calculating the product of the target correction coefficient and the basic torque slope; and using the product as the torque rise slope of the drive motor.

[0014] In some embodiments, determining that the vehicle is in an acceleration condition includes: upon receiving an opening signal of the accelerator pedal, determining that the vehicle is in an acceleration condition.

[0015] In some embodiments, the vehicle driving performance optimization method further includes: when the vehicle is in a non-acceleration condition, the target correction coefficient is a preset correction coefficient.

[0016] In order to achieve the above-mentioned purpose, an embodiment of the second aspect of the present invention proposes a vehicle driving performance optimization device, which includes: a first determination module, used to determine when the vehicle is in an acceleration condition, and obtain the speed parameters of the vehicle and the opening of the accelerator pedal; a second determination module, used to determine the basic torque slope of the drive motor according to the speed parameters of the vehicle; a third determination module, used to determine the torque rise slope of the drive motor according to the basic torque slope, the opening of the accelerator pedal and the speed parameters of the vehicle; a control module, used to perform drivability filtering on the required torque of the drive motor according to the torque rise slope.

[0017] According to the vehicle driving performance optimization device of an embodiment of the present invention, the torque rising slope of the driving motor is determined by introducing the vehicle speed parameters, and the vehicle speed parameters such as the size of the vehicle are associated with the performance of the drivability filter to achieve the torque response requirements under different vehicle speeds and different accelerator pedal openings, thereby improving the vehicle's driving performance.

[0018] In some embodiments, the first determination module is specifically used to: input the speed parameter into a preset two-dimensional relationship table consisting of speed parameter-basic torque slope to determine the basic torque slope corresponding to the speed parameter.

[0019] In order to achieve the above-mentioned object, an embodiment of a third aspect of the present invention provides a vehicle, which includes the vehicle driving performance optimization device implemented as above.

[0020] According to the vehicle of the embodiment of the present invention, the torque rising slope of the driving motor is determined by introducing the vehicle speed parameters, and the vehicle speed parameters such as the size of the vehicle are associated with the performance of the drivability filter to achieve the torque response requirements under different vehicle speeds and different accelerator pedal openings, thereby improving the vehicle's drivability.

[0021] In order to achieve the above-mentioned objectives, an embodiment of the fourth aspect of the present invention proposes a computer-readable storage medium, on which a vehicle driving performance optimization program is stored. When the vehicle driving performance optimization program is executed by a processor, the vehicle driving performance optimization method as described in the above-mentioned embodiment is implemented.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a curve schematic diagram of determining the torque rising slope according to the accelerator pedal opening according to one embodiment of the present invention;

[0025] Figure 2 is a flow chart of a method for optimizing vehicle driving performance according to an embodiment of the present invention;

[0026] Figure 3 is a schematic diagram of the corresponding relationship between the target correction coefficient, the speed parameter and the accelerator pedal opening according to an embodiment of the present invention;

[0027] Figure 4 is a block diagram of a vehicle driving performance optimization device according to an embodiment of the present invention;

[0028] Figure 5 is a block diagram of a vehicle according to one embodiment of the present invention. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0030] like Figure 1 FIG. 1 is a curve diagram of determining the torque rising slope according to the accelerator pedal opening according to an embodiment of the present invention. When determining the torque rising slope, if no parameter is introduced, the correction requirements under different vehicles and different accelerator pedal openings cannot be met. Therefore, the present invention introduces a speed parameter when determining the torque rising slope to achieve the correction requirements under different vehicle speeds and different accelerator pedal openings.

[0031] Combine the following Figure 2 The vehicle driving performance optimization method according to the embodiment of the present invention is illustrated by way of example. Figure 1 As shown, the vehicle driving performance optimization method of the embodiment of the present invention at least includes steps S1 to S4.

[0032] Step S1, when it is determined that the vehicle is in an acceleration condition, the speed parameter of the vehicle and the opening degree of the accelerator pedal are obtained.

[0033] The vehicle is in an acceleration condition, for example, after the driver steps on the accelerator, the vehicle receives an opening signal of the accelerator pedal, and determines that the vehicle is in an acceleration condition where the driver steps on the accelerator.

[0034] In the embodiment, after determining that the vehicle is in an acceleration condition, the speed parameter of the vehicle and the opening of the accelerator pedal are detected, wherein the speed parameter of the vehicle is, for example, the vehicle speed or the rotation speed of the drive motor. By obtaining the speed parameter of the vehicle, that is, the opening of the accelerator pedal, it is convenient to determine the basic torque slope of the drive motor according to the speed parameter of the vehicle and the opening of the accelerator pedal.

[0035] Step S2, determining the basic torque slope of the driving motor according to the speed parameter of the vehicle.

[0036] The basic torque slope of the drive motor is obtained by processing the vehicle speed or the rotation speed of the drive motor, and the basic torque slope is related to the change of the vehicle speed or the rotation speed of the drive motor.

[0037] In an embodiment, after the speed parameter of the vehicle is acquired, the speed parameter of the vehicle is processed to obtain the basic torque slope of the drive motor, thereby facilitating control of the drivability filtering of the vehicle according to the basic torque slope of the drive motor.

[0038] Step S3, determining the torque increase slope of the drive motor according to the basic torque slope, the opening of the accelerator pedal and the speed parameters of the vehicle.

[0039] Among them, the torque rising slope of the drive motor is obtained by correcting the basic torque slope. When correcting the basic torque slope, the accelerator pedal opening and the vehicle speed parameters are introduced. The torque rising slope of the drive motor is determined according to the accelerator pedal opening, the vehicle speed parameters, that is, the basic torque slope of the drive motor.

[0040] It is understandable that when determining the torque rising slope of the drive motor, the speed parameter of the vehicle is introduced to achieve the torque response speed requirements of different vehicle speeds and different accelerator pedals.

[0041] Step S4, performing drivability filtering on the required torque of the driving motor according to the torque rising slope.

[0042] In an embodiment, after the torque rising slope of the driving motor is determined, drivability filtering is performed on the required torque of the driving motor according to the torque rising slope.

[0043] For example, when a signal indicating that the accelerator pedal is opened widely, such as when the driver steps on the accelerator hard, the torque rising slope of the drive motor is determined to control the drive motor to output a smoother torque according to the torque rising slope, thereby improving the drivability of the vehicle.

[0044] According to the vehicle driving performance optimization method of an embodiment of the present invention, the torque rising slope of the driving motor is determined by introducing the vehicle speed parameters, and the vehicle speed parameters such as the size of the vehicle are associated with the performance of the drivability filter to achieve the torque response requirements under different vehicle speeds and different accelerator pedal openings, thereby improving the vehicle's driving performance.

[0045] In some embodiments, the speed parameters of the vehicle include the vehicle speed or the rotational speed of the drive motor, and the basic torque slope of the drive motor is determined according to the speed parameters, including: inputting the vehicle speed or the rotational speed of the drive motor into a preset correspondence table of the vehicle speed parameter-basic torque slope to determine the basic torque slope corresponding to the vehicle speed or the rotational speed of the drive motor.

[0046] In an embodiment, the correspondence between the vehicle speed or the rotational speed of the drive motor and the basic torque slope is preset. After determining the vehicle speed or the rotational speed of the drive motor, the basic torque slope is determined according to the correspondence between the vehicle speed or the rotational speed of the drive motor and the basic torque slope.

[0047] In some embodiments, the torque rise slope of the drive motor is determined according to the basic torque slope, the opening of the accelerator pedal and the speed parameter of the vehicle, including: inputting the opening of the accelerator pedal and the speed of the vehicle into a correspondence table consisting of a preset opening of the accelerator pedal-vehicle speed parameter-basic torque slope correction coefficient, or inputting the opening of the accelerator pedal and the speed of the drive motor into a preset corresponding relationship table consisting of the opening of the accelerator pedal-vehicle speed parameter-basic torque slope correction coefficient to determine the target correction coefficient corresponding to the opening of the accelerator pedal and the speed parameter of the vehicle. It can be understood that after determining the torque rise slope of the drive motor, in order to make the vehicle have better driving performance in different driving modes, such as economic mode, power mode or off-road mode, the correction coefficient of the torque rise slope of the drive motor in the driving mode can be determined according to the driving mode of the vehicle, and the torque rise slope of the drive motor can be corrected again according to the correction coefficient, so that the vehicle can achieve the best driving performance in different driving modes.

[0048] In the embodiment, the relationship between the target correction coefficient and the accelerator pedal opening and the vehicle speed parameter is preset. After the accelerator pedal opening and the vehicle speed parameter are determined, the target correction coefficient corresponding to the accelerator pedal opening and the vehicle speed parameter is determined.

[0049] like Figure 3 FIG. 1 is a schematic diagram showing the corresponding relationship between the target correction coefficient and the vehicle speed parameter and the accelerator pedal opening according to an embodiment of the present invention. Figure 3 It can be seen that when determining the torque rising slope, the speed parameters of the vehicle, such as the vehicle speed or the rotational speed of the drive motor, are introduced so that the torque rising slope of the drive motor meets different vehicle speeds.

[0050] For example, when determining the torque rise slope of the drive motor, the product of the target correction coefficient and the basic torque slope is calculated, and the product is used as the torque rise slope of the drive motor. That is, after determining the target correction coefficient, the basic torque slope of the drive motor is corrected according to the target correction coefficient to obtain the torque rise slope related to the speed parameter.

[0051] After determining the torque rising slope of the driving motor, the original required torque of the driving motor is filtered for drivability according to the torque rising slope to improve the drivability of the vehicle.

[0052] For example, after the vehicle speed is introduced to determine the torque rising slope, when the vehicle speed is low and the accelerator pedal opening is small, the torque response is fast to ensure light starting.

[0053] When the vehicle speed is moderate and the accelerator pedal opening increases, the torque response speed will increase linearly; when the vehicle speed is high and the accelerator pedal opening is large, the torque response will speed up accordingly to improve the acceleration power response at high speeds; when the vehicle speed and accelerator pedal opening reach the limit, the torque response also reaches the limit.

[0054] In some embodiments, determining that the vehicle is in an acceleration condition includes: upon receiving an opening signal of an accelerator pedal, determining that the vehicle is in an acceleration condition.

[0055] In an embodiment, the vehicle is in an acceleration condition, for example, the driver steps on the accelerator pedal. After receiving the accelerator pedal opening signal, in order to determine whether the vehicle is currently in the acceleration condition where the driver steps on the accelerator pedal, it is detected whether the vehicle speed changes. If the vehicle speed increases after receiving the accelerator pedal opening signal, it is considered that the vehicle is in the acceleration condition where the driver steps on the accelerator pedal.

[0056] In some embodiments, the vehicle driving performance optimization method further includes: when the vehicle is in a non-acceleration condition, the target correction coefficient is a preset correction coefficient.

[0057] In an embodiment, when the vehicle is in a non-acceleration condition, the target correction coefficient is a preset correction coefficient, for example, the target correction coefficient is 1, so as to achieve correction of the basic torque slope under the non-acceleration condition.

[0058] According to the vehicle driving performance optimization method of an embodiment of the present invention, the torque rising slope of the driving motor is determined by introducing the vehicle speed parameters, and the vehicle speed parameters such as the size of the vehicle are associated with the performance of the drivability filter to achieve the torque response requirements under different vehicle speeds and different accelerator pedal openings, thereby improving the vehicle's driving performance.

[0059] The following describes a vehicle driving performance optimization device according to an embodiment of the present invention.

[0060] like Figure 4 As shown, the vehicle driving performance optimization device 2 of the embodiment of the present invention includes a first determination module 20, a second determination module 21, a third determination module 22 and a control module 23, wherein the first determination module 20 is used to determine that the vehicle is in an acceleration condition and obtain the speed parameter of the vehicle and the opening of the accelerator pedal; the second determination module 21 is used to determine the basic torque slope of the drive motor according to the speed parameter; the third determination module 22 is used to determine the torque rise slope of the drive motor according to the basic torque slope, the opening of the accelerator pedal and the speed parameter of the vehicle; the control module 23 is used to perform drivability filtering on the required torque of the drive motor according to the torque rise slope.

[0061] According to the vehicle driving performance optimization device 2 of the embodiment of the present invention, the torque rising slope of the driving motor is determined by introducing the vehicle speed parameters, and the vehicle speed parameters such as the size of the vehicle are associated with the performance of the drivability filter to achieve the torque response requirements under different vehicle speeds and different accelerator pedal openings, thereby improving the vehicle's driving performance.

[0062] In some embodiments, the second determination module 21 is specifically used to: input the vehicle speed or the speed of the drive motor into a preset correspondence table of the vehicle speed parameter-basic torque slope to determine the basic torque slope corresponding to the vehicle speed or the speed of the drive motor.

[0063] In some embodiments, the third determination module 22 is specifically used to: input the accelerator pedal opening and the vehicle speed into a correspondence table consisting of a preset accelerator pedal opening-vehicle speed parameter-basic torque slope correction coefficient, or input the accelerator pedal opening and the speed of the drive motor into a correspondence table consisting of a preset accelerator pedal opening-vehicle speed parameter-basic torque slope correction coefficient to determine the target correction coefficient corresponding to the accelerator pedal opening and the vehicle speed parameter; determine the torque rise slope of the drive motor according to the target correction coefficient and the basic torque slope.

[0064] In some embodiments, the third determination module 22 is specifically used to: calculate the product of the target correction coefficient and the basic torque slope; and use the product as the torque rising slope of the driving motor.

[0065] In some embodiments, the first determination module 20 is specifically used to determine that the vehicle is in an acceleration condition when receiving an opening signal of the accelerator pedal.

[0066] In some embodiments, when the vehicle is in a non-acceleration condition, the target correction coefficient is a preset correction coefficient.

[0067] Next, a vehicle according to an embodiment of the present invention will be described.

[0068] like Figure 5 As shown, the vehicle 3 of the embodiment of the present invention includes the vehicle driving performance optimization device 2 of the above-mentioned embodiment.

[0069] According to the vehicle 3 of the embodiment of the present invention, the torque rising slope of the driving motor is determined by introducing the vehicle speed parameters, and the vehicle speed parameters such as the size of the vehicle are associated with the performance of the drivability filter to achieve the torque response requirements under different vehicle speeds and different accelerator pedal openings, thereby improving the vehicle's drivability.

[0070] A fourth aspect of the present invention provides a computer-readable storage medium on which a vehicle driving performance optimization program is stored. When the vehicle driving performance optimization program is executed by a processor, a vehicle driving performance optimization method as described in the above embodiment is implemented.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0072] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for optimizing vehicle driving performance, characterized in that: include: When it is determined that the vehicle is in an acceleration condition, a speed parameter of the vehicle and an opening degree of an accelerator pedal are obtained, wherein the speed parameter of the vehicle includes a vehicle speed or a rotation speed of a driving motor; Determining the basic torque slope of the drive motor according to the speed parameter of the vehicle, comprising: inputting the vehicle speed or the rotation speed of the drive motor into a preset correspondence table of vehicle speed parameter-basic torque slope to determine the basic torque slope corresponding to the vehicle speed or the rotation speed of the drive motor; Determining the torque rising slope of the drive motor according to the basic torque slope of the drive motor, the opening of the accelerator pedal and the speed parameter of the vehicle, comprising: inputting the opening of the accelerator pedal and the speed of the vehicle into a correspondence table consisting of a preset opening of the accelerator pedal-vehicle speed parameter-correction coefficient of the basic torque slope, or inputting the opening of the accelerator pedal and the speed of the drive motor into a correspondence table consisting of a preset opening of the accelerator pedal-vehicle speed parameter-correction coefficient of the basic torque slope to determine a target correction coefficient corresponding to the opening of the accelerator pedal and the speed parameter of the vehicle, and determining the torque rising slope of the drive motor according to the target correction coefficient and the basic torque slope; A drivability filter is performed on the required torque of the driving motor according to the torque rising slope.

2. The vehicle driving performance optimization method according to claim 1, characterized in that: Determining the torque rising slope of the drive motor according to the target correction coefficient and the basic torque slope includes: calculating the product of the target correction coefficient and the basic torque slope; The product is used as the torque rising slope of the driving motor.

3. The vehicle driving performance optimization method according to claim 1, characterized in that: Determining that the vehicle is in an accelerating condition includes: When the opening signal of the accelerator pedal is received, it is determined that the vehicle is in an acceleration condition.

4. The vehicle driving performance optimization method according to claim 1, characterized in that: Also includes: When the vehicle is in a non-acceleration condition, the target correction coefficient is a preset correction coefficient.

5. A vehicle driving performance optimization device, characterized in that: include: A first determination module, configured to determine that the vehicle is in an acceleration condition, and to obtain a speed parameter of the vehicle and an opening of an accelerator pedal, wherein the speed parameter of the vehicle includes a vehicle speed or a rotation speed of a driving motor; A second determination module is used to determine the basic torque slope of the drive motor according to the speed parameter of the vehicle, comprising: inputting the vehicle speed or the rotation speed of the drive motor into a preset correspondence table of vehicle speed parameters-basic torque slopes to determine the basic torque slope corresponding to the vehicle speed or the rotation speed of the drive motor; a third determination module, for determining the torque rise slope of the drive motor according to the basic torque slope of the drive motor, the opening of the accelerator pedal and the speed parameter of the vehicle, comprising: inputting the opening of the accelerator pedal and the vehicle speed into a correspondence table consisting of a preset opening of the accelerator pedal-vehicle speed parameter-correction coefficient of the basic torque slope, or inputting the opening of the accelerator pedal and the speed of the drive motor into a correspondence table consisting of a preset opening of the accelerator pedal-vehicle speed parameter-correction coefficient of the basic torque slope, so as to determine a target correction coefficient corresponding to the opening of the accelerator pedal and the speed parameter of the vehicle, and determining the torque rise slope of the drive motor according to the target correction coefficient and the basic torque slope; A control module is used to perform drivability filtering on the required torque of the driving motor according to the torque rising slope.

6. A vehicle, characterized in that: include: The vehicle driving performance optimization device as described in claim 5.

7. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a vehicle driving performance optimization program, and when the vehicle driving performance optimization program is executed by the processor, the vehicle driving performance optimization method according to any one of claims 1 to 4 is implemented.

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