CN113119974B - Vehicle driving control method and system and vehicle - Google Patents
Vehicle driving control method and system and vehicle Download PDFInfo
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- CN113119974B CN113119974B CN201911411619.0A CN201911411619A CN113119974B CN 113119974 B CN113119974 B CN 113119974B CN 201911411619 A CN201911411619 A CN 201911411619A CN 113119974 B CN113119974 B CN 113119974B
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- energy recovery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/18—Propelling the vehicle
- B60W30/182—Selecting between different operative modes, e.g. comfort and performance modes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/18—Propelling the vehicle
Abstract
The invention provides a vehicle driving control method, a vehicle driving control system and a vehicle, wherein the method comprises the following steps: acquiring coordinate information of a target adjusting point selected in a dynamic response-energy recovery rectangular coordinate system, wherein the abscissa of the rectangular coordinate system is dynamic response intensity, and the ordinate of the rectangular coordinate system is energy recovery intensity; and adjusting the torque gradient and the energy recovery intensity of the vehicle according to the coordinate information of the target adjusting point. According to the vehicle driving control method provided by the embodiment of the invention, the power response intensity and the energy recovery intensity of the vehicle can be controlled according to the adjusting point selected at any position in the rectangular coordinate system by establishing the rectangular coordinate system of the power response intensity-the energy recovery intensity, so that the stepless adjustment of the driving mode is realized, and the driving requirement of a driver is met to the maximum extent.
Description
Technical Field
The invention relates to the technical field of vehicle driving, in particular to a vehicle driving control method and system and a vehicle.
Background
In the development process of the automobile industry, pure electric vehicles become a current society with a focus on environmental and energy problems in the global scope due to the concept of green environmental protection, and are increasingly concerned and valued by consumers. In order to meet different requirements of drivers on vehicle performances such as dynamic performance, comfort performance, economy performance and the like, electric vehicles often have different driving mode selections such as an economy mode, a comfort mode, a sport mode and the like, and in the set driving modes, different differences exist between the dynamic response and the energy recovery of the vehicle so as to meet different requirements of the drivers. However, this driving mode setting method only provides limited selection modes for drivers, and it is difficult to meet individual requirements of all drivers.
Disclosure of Invention
In view of this, the present invention provides a vehicle driving control method, system and vehicle, so as to solve the problem that the conventional technology cannot perform convenient stepless control on the vehicle power response intensity and the energy recovery intensity.
In order to solve the technical problems, the invention adopts the following technical scheme:
an embodiment of the first aspect of the invention provides a vehicle driving control method, which includes:
acquiring coordinate information of a target adjusting point selected from a rectangular coordinate system of power response intensity-energy recovery intensity, wherein the abscissa of the rectangular coordinate system is the power response intensity, and the ordinate of the rectangular coordinate system is the energy recovery intensity;
and adjusting the torque gradient and the energy recovery intensity of the vehicle according to the coordinate information of the target adjusting point.
Optionally, the coordinate information of the target adjustment point includes abscissa information and ordinate information, and the step of adjusting the torque gradient and the energy recovery strength of the vehicle according to the coordinate information of the target adjustment point includes:
respectively carrying out normalization processing on the abscissa information and the ordinate information to obtain a dynamic response coefficient A and an energy recovery coefficient B;
and adjusting the torque gradient and the energy recovery intensity of the vehicle according to the dynamic response coefficient A and the energy recovery coefficient B, wherein A is more than or equal to 0 and less than or equal to 1, and B is more than or equal to 0 and less than or equal to 1.
Optionally, the calculation formula of the torque gradient is as follows:
the torque gradient is (1-a) × minimum set torque gradient + a × maximum set torque gradient.
Optionally, the calculation formula of the energy recovery intensity is as follows:
the energy recovery intensity is (1-B) × minimum set energy recovery intensity + B × maximum set energy recovery intensity.
An embodiment of the second aspect of the present invention further provides a vehicle driving control system, including:
the vehicle central control screen is used for acquiring coordinate information of a target adjusting point selected from a power response intensity-energy recovery intensity rectangular coordinate system, wherein the abscissa of the rectangular coordinate system is the power response intensity, and the ordinate of the rectangular coordinate system is the energy recovery intensity;
and the vehicle control unit is used for adjusting the torque gradient and the energy recovery intensity of the vehicle according to the coordinate information of the target adjusting point.
Optionally, the coordinate information of the target adjusting point includes abscissa information and ordinate information, and the vehicle control unit includes:
the normalization processing module is used for respectively performing normalization processing on the abscissa information and the ordinate information to obtain a dynamic response coefficient and an energy recovery coefficient;
and the adjusting module is used for adjusting the torque gradient and the energy recovery strength of the vehicle according to the dynamic response coefficient A and the energy recovery coefficient B, wherein A is more than or equal to 0 and less than or equal to 1, and B is more than or equal to 0 and less than or equal to 1.
Optionally, the calculation formula of the torque gradient is as follows:
the torque gradient is (1-a) × minimum set torque gradient + a × maximum set torque gradient.
Optionally, the calculation formula of the energy recovery intensity is as follows:
the energy recovery intensity is (1-B) × minimum set energy recovery intensity + B × maximum set energy recovery intensity.
Optionally, data transmission is performed between the control screen in the whole vehicle and the vehicle controller through a controller local area network.
An embodiment of the third aspect of the invention further provides a vehicle, which comprises the vehicle driving control system.
The technical scheme of the invention has the following beneficial effects:
according to the vehicle driving control method provided by the embodiment of the invention, by establishing the rectangular coordinate system of the power response intensity and the energy recovery intensity, the power response intensity and the energy recovery intensity of the vehicle can be controlled according to the adjusting point selected at any position in the rectangular coordinate system, the stepless adjustment of the driving mode is realized, and the driving requirement of a driver is met to the maximum extent.
Drawings
Fig. 1 is a schematic flow chart of a vehicle driving control method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a rectangular coordinate system of dynamic response intensity-energy recovery intensity provided by an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a vehicle driving control system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
In the development process of the automobile industry, the pure electric automobile is a current society which is focused on environmental and energy problems in the global scope due to the concept of green environmental protection, and is increasingly concerned and valued by consumers. In order to meet different requirements of drivers on vehicle performances such as dynamic performance, comfort performance, economy performance and the like, electric vehicles often have different driving mode selections such as economy mode, comfort mode, sport mode and the like, and in the set driving modes, different differences exist between the dynamic response and the energy recovery of the vehicle so as to meet different requirements of the drivers. However, this driving mode setting method only provides limited selection modes for drivers, and it is difficult to meet individual requirements of all drivers.
In order to meet the driving requirement of a driver to the maximum extent, take power performance, comfort and economy of a vehicle into consideration, and aim at the personalized setting mode of the driving mode of the electric vehicle, the invention provides the vehicle driving control method.
As shown in fig. 1, an embodiment of the first aspect of the present invention provides a vehicle driving control method, which may include the steps of:
step 11: acquiring coordinate information of a target adjusting point selected from a rectangular coordinate system of power response intensity-energy recovery intensity, wherein the abscissa of the rectangular coordinate system is the power response intensity, and the ordinate of the rectangular coordinate system is the energy recovery intensity;
step 12: and adjusting the torque gradient and the energy recovery intensity of the vehicle according to the coordinate information of the target adjusting point.
According to the vehicle driving control method provided by the embodiment of the invention, the power response intensity and the energy recovery intensity of the vehicle can be controlled according to the adjusting point selected at any position in the rectangular coordinate system by establishing the rectangular coordinate system of the power response intensity-the energy recovery intensity, so that the stepless adjustment of the driving mode is realized, and the driving requirement of a driver is met to the maximum extent.
The following exemplifies the above-described vehicle driving control method.
As shown in fig. 2, in some embodiments of the present invention, in step 11, a rectangular coordinate system of the dynamic response intensity-energy recovery intensity is first established, in which the abscissa is the dynamic response intensity, the dynamic response intensity is gradually increased along the arrow direction of the abscissa, and the dynamic response intensity is gradually decreased along the arrow direction of the abscissa; the ordinate is the energy recovery intensity, along the arrow direction of the ordinate axis, the energy recovery intensity is gradually enhanced, and along the arrow direction of the ordinate axis, the energy recovery intensity is gradually weakened; the rectangular coordinate system can be divided into four quadrants I, II, III and IV according to the anticlockwise direction, and it should be noted that the intersection point of the horizontal axis and the vertical axis does not mean that the power response intensity and the energy recovery intensity are 0. By constructing the rectangular coordinate system of the power response intensity and the energy recovery intensity, the power response intensity and the energy recovery intensity can be accurately quantized, any point in the rectangular coordinate system can be selected in principle, and the power response intensity and the energy recovery intensity at the point are used for controlling the vehicle, so that the stepless regulation of the driving mode is realized, and the driving requirement of a driver can be met to the maximum extent.
In the embodiment of the present invention, in step 11, by acquiring the coordinate information of the target adjusting point P selected in the rectangular coordinate system of the power response intensity-energy recovery intensity, the power response intensity and the energy recovery intensity corresponding to the target adjusting point P can be determined according to the coordinate information of the target adjusting point P, that is, the target adjusting point P can be any point in the rectangular coordinate system, the coordinate information of the target adjusting point P includes abscissa information and ordinate information, which can be expressed as P (x, y), the abscissa information x represents the power response intensity of the vehicle, and the ordinate information y represents the energy recovery intensity of the vehicle.
In the embodiment of the present invention, after the coordinate information of the target adjusting point P is obtained in step 12, since the abscissa and ordinate information of the target adjusting point P correspond to the power response strength and the energy recovery strength one to one, the torque gradient and the energy recovery strength of the vehicle can be adjusted according to the coordinate information of the target adjusting point P, so as to implement the stepless adjustment of the driving mode of the vehicle.
In some embodiments of the present invention, step 12 may specifically include:
step 121: respectively carrying out normalization processing on the abscissa information and the ordinate information to obtain a dynamic response coefficient and an energy recovery coefficient;
step 122: and adjusting the torque gradient and the energy recovery intensity of the vehicle according to the dynamic response coefficient A and the energy recovery coefficient B, wherein A is more than or equal to 0 and less than or equal to 1, and B is more than or equal to 0 and less than or equal to 1.
Specifically, after coordinate information of a target adjustment point P is obtained, normalization processing needs to be performed on abscissa information x and ordinate information y of the target adjustment point P, respectively, to obtain a dynamic response coefficient a and an energy recovery coefficient B corresponding to the target adjustment point P, where the dynamic response coefficient a and the energy recovery coefficient B satisfy the condition: a is more than or equal to 0 and less than or equal to 1, and B is more than or equal to 0 and less than or equal to 1; and then the torque gradient and the energy recovery intensity of the vehicle can be adjusted and controlled further according to the dynamic response coefficient A and the energy recovery coefficient B.
In some embodiments of the invention, the torque gradient and the energy recovery intensity of the vehicle may be calculated by the following equations:
the torque gradient is (1-a) × minimum set torque gradient + a × maximum set torque gradient.
The energy recovery intensity is (1-B) × minimum set energy recovery intensity + B × maximum set energy recovery intensity.
Through the calculation formula, the torque gradient and the energy recovery intensity of the vehicle corresponding to the target adjusting point P can be obtained, and therefore the output torque and the energy recovery intensity of the vehicle are controlled according to the calculated torque gradient and the calculated energy recovery intensity.
According to the vehicle driving control method provided by the embodiment of the invention, the rectangular coordinate system is established by utilizing the power response intensity and the energy recovery intensity, so that a driver can select any point in the rectangular coordinate system as a target adjusting point, the stepless adjustment of a driving mode is realized, and the individualized driving requirement of the driver is met.
As shown in fig. 3, an embodiment of the second aspect of the present invention provides a vehicle driving control system, where the system 30 may include:
the vehicle central control screen 31 is used for acquiring coordinate information of a target adjusting point selected in a power response intensity-energy recovery intensity rectangular coordinate system, wherein the abscissa of the rectangular coordinate system is the power response intensity, and the ordinate of the rectangular coordinate system is the energy recovery intensity;
and the vehicle control unit 32 is used for adjusting the torque gradient and the energy recovery intensity of the vehicle according to the coordinate information of the target adjusting point.
That is to say, a rectangular coordinate system of power response strength and energy recovery strength is established on the central control screen 31 of the entire vehicle, a driver can select any point in the rectangular coordinate system on the central control screen 31 of the entire vehicle as a target adjusting point, the central control screen 31 of the entire vehicle can obtain coordinate information of the target adjusting point selected in the rectangular coordinate system of power response strength and energy recovery strength, then the central control screen 31 of the entire vehicle sends the coordinate information of the target adjusting point to the entire vehicle controller 32, and the entire vehicle controller 32 can adjust the torque gradient and the energy recovery strength of the vehicle according to the coordinate information of the target adjusting point.
In some embodiments of the present invention, the coordinate information of the target adjustment point includes an abscissa information and an ordinate information, and the vehicle controller 32 may include:
the normalization processing module is used for respectively performing normalization processing on the abscissa information and the ordinate information to obtain a dynamic response coefficient and an energy recovery coefficient;
and the adjusting module is used for adjusting the torque gradient and the energy recovery strength of the vehicle according to the dynamic response coefficient A and the energy recovery coefficient B, wherein A is more than or equal to 0 and less than or equal to 1, and B is more than or equal to 0 and less than or equal to 1.
Specifically, after receiving coordinate information of a target adjusting point, the normalization processing module respectively normalizes the coordinate information to obtain a power response coefficient A and an energy recovery coefficient B, then the normalization processing module transmits the power response coefficient A and the energy recovery coefficient B to the adjusting module, and the adjusting module adjusts the torque gradient and the energy recovery intensity of the vehicle according to the received power response coefficient A and the energy recovery coefficient B.
More specifically, the adjusting module comprises a torque gradient adjusting unit and an energy recovery intensity adjusting unit, wherein the torque gradient adjusting unit and the energy recovery intensity adjusting unit respectively process and calculate the dynamic response coefficient A and the energy recovery coefficient B through the following formulas:
torque gradient is (1-a) × minimum set torque gradient + a × maximum set torque gradient;
the energy recovery intensity is (1-B) × minimum set energy recovery intensity + B × maximum set energy recovery intensity;
a is more than or equal to 0 and less than or equal to 1, B is more than or equal to 0 and less than or equal to 1, the minimum set torque gradient and the maximum set torque gradient are two preset extreme values of the torque gradient adjusting unit, and the minimum set energy recovery intensity and the maximum set energy recovery intensity are two preset extreme values of the energy recovery intensity adjusting unit, so that the torque gradient and the energy recovery intensity are not too low or too high to influence the normal running of the vehicle.
Then, the torque gradient adjusting unit adjusts the torque gradient of the vehicle according to the calculated torque gradient value, and the energy recovery intensity adjusting unit adjusts the energy recovery intensity of the vehicle according to the calculated energy recovery intensity.
In other embodiments of the present invention, data transmission is performed between the vehicle central control panel 31 and the vehicle control unit 32 through a controller area network (i.e. CAN) to ensure accuracy and high efficiency of data transmission.
According to the vehicle driving control system provided by the embodiment of the invention, the rectangular coordinate system of the power response intensity-energy recovery intensity based on the four quadrants is displayed on the control screen of the whole vehicle, so that a driver can select any point on the control screen of the whole vehicle as a target adjusting point, thereby realizing stepless adjustment of a driving mode and greatly meeting the individual driving requirements of the driver.
An embodiment of the third aspect of the present invention further provides a vehicle, where the vehicle includes the vehicle driving control system described in any of the above embodiments, and since the vehicle driving control system in the above embodiments has the above beneficial effects, the vehicle in the embodiment of the present invention also has corresponding beneficial effects, and details are not repeated here.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (4)
1. A vehicle driving control method characterized by comprising:
acquiring coordinate information of a target adjusting point selected from a rectangular coordinate system of power response intensity-energy recovery intensity, wherein the abscissa of the rectangular coordinate system is the power response intensity, and the ordinate of the rectangular coordinate system is the energy recovery intensity;
adjusting the torque gradient and the energy recovery intensity of the vehicle according to the coordinate information of the target adjusting point;
the coordinate information of the target adjusting point comprises abscissa information and ordinate information, and the step of adjusting the torque gradient and the energy recovery intensity of the vehicle according to the coordinate information of the target adjusting point comprises the following steps:
respectively carrying out normalization processing on the abscissa information and the ordinate information to obtain a dynamic response coefficient A and an energy recovery coefficient B;
adjusting the torque gradient and the energy recovery intensity of the vehicle according to the dynamic response coefficient A and the energy recovery coefficient B, wherein A is more than or equal to 0 and less than or equal to 1, and B is more than or equal to 0 and less than or equal to 1;
the calculation formula of the torque gradient is as follows:
torque gradient = (1-a) × minimum set torque gradient + a × maximum set torque gradient;
the calculation formula of the energy recovery intensity is as follows:
energy recovery intensity = (1-B) × minimum set energy recovery intensity + B × maximum set energy recovery intensity.
2. A vehicle driving control system, characterized by comprising:
the vehicle central control screen is used for acquiring coordinate information of a target adjusting point selected from a power response intensity-energy recovery intensity rectangular coordinate system, wherein the abscissa of the rectangular coordinate system is the power response intensity, and the ordinate of the rectangular coordinate system is the energy recovery intensity;
the vehicle control unit is used for adjusting the torque gradient and the energy recovery intensity of the vehicle according to the coordinate information of the target adjusting point;
the coordinate information of the target adjusting point comprises abscissa information and ordinate information, and the vehicle control unit comprises:
the normalization processing module is used for respectively performing normalization processing on the abscissa information and the ordinate information to obtain a dynamic response coefficient A and an energy recovery coefficient B;
the adjusting module is used for adjusting the torque gradient and the energy recovery intensity of the vehicle according to the dynamic response coefficient A and the energy recovery coefficient B, wherein A is more than or equal to 0 and less than or equal to 1, and B is more than or equal to 0 and less than or equal to 1;
the calculation formula of the torque gradient is as follows:
torque gradient = (1-a) × minimum set torque gradient + a × maximum set torque gradient;
the calculation formula of the energy recovery intensity is as follows:
energy recovery intensity = (1-B) × minimum set energy recovery intensity + B × maximum set energy recovery intensity.
3. The vehicle driving control system of claim 2, wherein data transmission is performed between the vehicle central control screen and the vehicle controller through a controller area network.
4. A vehicle characterized by comprising the vehicle driving control system as claimed in claim 2.
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