CN117404462A - Torque correction method and device for gear shifting process, electronic equipment and storage medium - Google Patents

Torque correction method and device for gear shifting process, electronic equipment and storage medium Download PDF

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Publication number
CN117404462A
CN117404462A CN202311466865.2A CN202311466865A CN117404462A CN 117404462 A CN117404462 A CN 117404462A CN 202311466865 A CN202311466865 A CN 202311466865A CN 117404462 A CN117404462 A CN 117404462A
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China
Prior art keywords
torque
vehicle
automatic transmission
current
determining
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CN202311466865.2A
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Chinese (zh)
Inventor
院义锋
周兴利
胡丰宾
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Beiqi Foton Motor Co Ltd
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Beiqi Foton Motor Co Ltd
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Priority to CN202311466865.2A priority Critical patent/CN117404462A/en
Publication of CN117404462A publication Critical patent/CN117404462A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/14—Inputs being a function of torque or torque demand
    • F16H59/141—Inputs being a function of torque or torque demand of rate of change of torque or torque demand
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
    • F16H59/52—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on the weight of the machine, e.g. change in weight resulting from passengers boarding a bus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/74—Inputs being a function of engine parameters
    • F16H59/78—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/60—Inputs being a function of ambient conditions
    • F16H59/66—Road conditions, e.g. slope, slippery
    • F16H2059/663—Road slope

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

The invention discloses a torque correction method, a device, electronic equipment and a storage medium for a gear shifting process, wherein the torque correction method for the gear shifting process is applied to an automatic transmission and comprises the following steps of: determining a current road surface gradient according to the weight of the vehicle and determining a current temperature of the automatic transmission under the condition of gear shifting of the automatic transmission; determining an association relation of the vehicle weight, the current road surface gradient and the current temperature to correct the torque gradient of the automatic transmission; and correcting the torque slope based on the association relation. According to the method, the torque slope of the gear shifting process is corrected according to the weight of the vehicle, the current road slope and the current temperature, so that the automatic transmission can shift gears rapidly and smoothly under different working conditions, the power connection is better, and the gear shifting requirement of complex working conditions can be met.

Description

Torque correction method and device for gear shifting process, electronic equipment and storage medium
Technical Field
The application relates to the technical field of gearboxes, in particular to a torque correction method and device for a gear shifting process, electronic equipment and a storage medium.
Background
The AMT (Automated Mechanical Transmission, mechanical automatic transmission) in the related art does not correct the shift process torque control in the shift process control. Therefore, during a ramp shift or when a shift speed changes rapidly, problems of power interruption, difficult power engagement, frequent shifting and insufficient power are easy to occur, so that the AMT cannot meet the shift requirement of a complex working condition.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, a first object of the present invention is to provide a torque correction method for a gear shifting process, which corrects a torque slope of the gear shifting process according to a vehicle weight, a current road slope and a current temperature, so that gear shifting of an automatic transmission under different working conditions is fast and smooth, power engagement is better, and gear shifting requirements under complex working conditions can be satisfied.
A second object of the present invention is to propose a computer readable storage medium.
A third object of the present invention is to propose an electronic device.
A fourth object of the present invention is to provide a torque correction device for a gear shift process.
To achieve the above object, according to a first aspect of the present invention, there is provided a torque correction method for a shift process, applied to an automatic transmission, the method including: determining a current road surface gradient according to the weight of the vehicle and determining a current temperature of the automatic transmission under the condition of gear shifting of the automatic transmission; determining an association relation of the vehicle weight, the current road surface gradient and the current temperature to correct the torque gradient of the automatic transmission; and correcting the torque slope based on the association relation.
According to the torque correction method for the gear shifting process, when the automatic transmission shifts gears, the current road gradient and the current temperature are determined, and the torque gradient is corrected according to the association relation of the vehicle weight, the current road gradient and the current temperature for correcting the torque gradient in the gear shifting process, so that the automatic transmission shifts gears quickly and smoothly under different working conditions, has better power connection, and can meet the gear shifting requirement of complex working conditions.
According to one embodiment of the present invention, determining a correlation of a vehicle weight, a current road surface gradient, and a current temperature to correct a torque gradient of an automatic transmission includes: respectively determining the vehicle weight, the current road gradient and the correction amplitude of the current temperature to the torque gradient; and determining the product of the correction amplitude corresponding to the vehicle weight, the correction amplitude corresponding to the current road surface gradient and the correction amplitude corresponding to the current temperature as an association relation.
According to one embodiment of the invention, the magnitude of the correction for the vehicle weight, the magnitude of the correction for the current road surface gradient, and the magnitude of the correction for the current temperature are determined based on the current operating condition of the vehicle.
According to one embodiment of the invention, before determining the current road surface gradient from the vehicle weight, the method further comprises: in the case where the acceleration of the vehicle remains stable, the vehicle weight is determined based on the road gradient, the rolling resistance, the air resistance, the acceleration resistance, and the vehicle driving force.
According to one embodiment of the invention, the vehicle weight is calculated according to the following formula:wherein (1)>Is the driving force of the vehicle, gf is the rolling resistance,for air resistance>For accelerating resistance, T tq For engine torque, i g I is the transmission ratio, i 0 Is the transmission ratio of the main speed reducer, eta t For driveline mechanical efficiency, r is wheel rolling radius, G is vehicle weight, f is rolling resistance coefficient, C d A is the windward area of the vehicle, u is the air resistance coefficient a I is the speed of the vehicleFor road gradient, δ is the rotational mass conversion factor of the vehicle, m is the mass of the vehicle, +.>Is acceleration.
According to one embodiment of the present invention, determining a current road surface gradient from a vehicle weight includes: the current road surface gradient is determined based on the vehicle weight, rolling resistance, air resistance, acceleration resistance, and vehicle driving force.
According to one embodiment of the present invention, determining a current temperature of an automatic transmission includes: the current temperature is determined based on the current ambient temperature, the temperature field of the engine compartment, and the clutch temperature.
To achieve the above object, an embodiment according to a second aspect of the present invention provides a computer-readable storage medium having stored thereon a torque correction program of a shift process that when executed by a processor implements the torque correction method of the shift process of any of the foregoing embodiments.
According to the computer readable storage medium, through the computer program for executing the torque correction method of the gear shifting process, the torque slope of the gear shifting process is corrected according to the weight of the vehicle, the current road slope and the current temperature, so that the automatic transmission can be shifted quickly and smoothly under different working conditions, the power connection is better, and the gear shifting requirement of complex working conditions can be met.
In order to achieve the above object, according to a third aspect of the present invention, an electronic device is provided, which includes a memory, a processor, and a torque correction program for a shift process stored in the memory and executable on the processor, wherein the torque correction method for a shift process according to any one of the foregoing embodiments is implemented when the processor executes the torque correction program for a shift process.
According to the electronic equipment provided by the embodiment of the invention, the program of the torque correction method of the gear shifting process is executed by the processor, and the torque slope of the gear shifting process is corrected according to the weight of the vehicle, the current road slope and the current temperature, so that the automatic transmission can be shifted quickly, smoothly and better in power connection under different working conditions, and the gear shifting requirement of complex working conditions can be met.
In order to achieve the above object, according to a fourth aspect of the present invention, there is provided a torque correction device for a shift process, which is applied to an automatic transmission, the device including: the first determining module is used for determining the current road surface gradient according to the weight of the vehicle under the condition of gear shifting of the automatic transmission; a second determination module for determining a current temperature of the automatic transmission in the case of a gear shift of the automatic transmission; the third determining module is used for determining the association relation of the vehicle weight, the current road surface gradient and the current temperature for correcting the torque gradient of the automatic transmission; and the correction module is used for correcting the torque slope based on the association relation.
According to the torque correction device for the gear shifting process, when the automatic transmission shifts gears, the current road gradient is determined through the first determination module, the current temperature is determined through the second determination module, the association relation of the vehicle weight, the current road gradient and the current temperature for correcting the torque gradient in the gear shifting process is determined through the third determination module, and the torque gradient is corrected through the correction module according to the association relation, so that the automatic transmission shifts gears in different working conditions quickly, smoothly and better in power connection, and the gear shifting requirement of complex working conditions can be met.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a flow chart diagram of a torque correction method for a shift process according to one embodiment of the present invention;
FIG. 2 is a flow chart of a torque correction method for a shift process according to one embodiment of the present invention;
FIG. 3 is a system diagram of an electronic device according to one embodiment of the invention;
FIG. 4 is a schematic structural view of a torque correcting device for a shift process according to one embodiment of the present invention;
fig. 5 is a schematic structural view of a torque correcting device for a gear shift process according to another embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The torque correction method, apparatus, electronic device, and storage medium of the shift process according to the embodiments of the present invention are described below with reference to the accompanying drawings.
FIG. 1 is a flow chart diagram of a torque correction method for a shift process according to one embodiment of the present invention. The torque correction method of the shift process is applied to an automatic transmission, and as shown in fig. 1, the torque correction method of the shift process includes:
s101, in the case of gear shifting of the automatic transmission, determining the current road gradient according to the weight of the vehicle, and determining the current temperature of the automatic transmission.
Specifically, different road gradients and different current temperatures have different requirements on gear shifting time, so that in the gear shifting process of the automatic transmission, the current road gradient needs to be determined according to the weight of the vehicle, the current temperature is determined, and the torque in the gear shifting process can be accurately corrected according to the road gradient and the current temperature.
The current road surface gradient is not limited to be determined in the gear shifting process, but may be calculated in real time, and then the road surface gradient calculated in real time is used as the current road surface gradient when the automatic transmission is shifted.
In some embodiments, prior to determining the current road surface grade from the vehicle weight, the method further comprises: in the case where the acceleration of the vehicle remains stable, the vehicle weight is determined based on the road gradient, the rolling resistance, the air resistance, the acceleration resistance, and the vehicle driving force.
Specifically, because the load of the vehicle at the time of running is uncertain, the vehicle weight is unknown and needs to be determined by calculation. In the starting acceleration process of the vehicle and the stable acceleration process of the vehicle when the gear is unchanged, the acceleration of the vehicle is kept stable, namely the acceleration is kept unchanged, so that the calculation process of the weight of the vehicle is simpler. Road grade may be obtained by a grade sensor built into the TCU (Transmission Control Unit, automatic transmission control unit). The rolling resistance and air resistance of the vehicle can be calculated or obtained through a vehicle coasting experiment. The acceleration resistance may be calculated from the acceleration, and the vehicle driving force may be calculated from the vehicle parameters.
It should be noted that, when the automatic transmission is shifted, the detected road gradient is inaccurate by the gradient sensor, and therefore, in the shifting process of the automatic transmission, the current road gradient needs to be calculated according to the vehicle weight, and the gradient value detected by the gradient sensor cannot be directly used as the current road gradient. In calculating the road surface gradient in real time from the vehicle weight, since the vehicle weight is calculated while the acceleration is kept stable, the vehicle weight is unknown when the vehicle is started, and the default vehicle weight is the half-load weight.
In the above embodiment, the vehicle weight is calculated while the acceleration is kept stable, not only making the calculation process of the vehicle weight simpler, but also more accurate vehicle weight can be obtained, thereby making the current road surface gradient and torque gradient obtained from the vehicle weight more accurate.
Further, in some embodiments, the vehicle weight is calculated according to the following equation (1):
wherein,for vehicle driving force, gf is rolling resistance, < ->For air resistance>For accelerating resistance, T tq For engine torque, i g I is the transmission ratio, i 0 Is the transmission ratio of the main speed reducer, eta t For driveline mechanical efficiency, r is wheel rolling radius, G is vehicle weight, f is rolling resistance coefficient, C d A is the windward area of the vehicle, u is the air resistance coefficient a I is road gradient, δ is a rotational mass conversion coefficient of the vehicle, m is the mass of the vehicle, +.>Is acceleration.
It will be appreciated that the vehicle weight is the product of the mass of the vehicle and the acceleration of gravity, and that other parameters than the vehicle weight and the mass of the vehicle are known in equation (1), and therefore the vehicle weight can be calculated according to equation (1).
Although the rolling resistance coefficient varies according to the road surface condition, the rolling resistance coefficient is negligible due to the small variation range.
In some embodiments, determining the current road surface grade from the vehicle weight includes: the current road surface gradient is determined based on the vehicle weight, rolling resistance, air resistance, acceleration resistance, and vehicle driving force.
That is, the current road surface gradient may be calculated by the formula (1), and other parameters than the current road surface gradient in the formula (1) are known, and thus the current road surface gradient may be calculated according to the formula (1).
In some embodiments, determining the current temperature of the automatic transmission includes: the current temperature is determined based on the current ambient temperature, the temperature field of the engine compartment, and the clutch temperature.
Specifically, the temperature field of the engine compartment is a collection of temperatures at various locations within the engine compartment. The current ambient temperature, the temperature field of the engine compartment, and the clutch temperature may be input to a temperature model of the automatic transmission, which outputs the current temperature.
Note that the temperature model of the automatic transmission may be a temperature model in the related art, and is not limited in particular here.
S102, determining the association relation of the vehicle weight, the current road surface gradient and the current temperature to correct the torque gradient of the automatic transmission.
Specifically, the torque gradient affects the shift time of the automatic transmission, and the larger the absolute value of the torque gradient, the shorter the shift time of the automatic transmission. The torque slope in the gear shifting process is adjusted according to the weight of the vehicle, the current road slope and the current temperature, so that the gear shifting time is adjusted, and the automatic transmission is fast and smooth in gear shifting and better in power connection.
In some embodiments, determining an association of a vehicle weight, a current road surface gradient, and a current temperature to correct a torque gradient of an automatic transmission includes: respectively determining the vehicle weight, the current road gradient and the correction amplitude of the current temperature to the torque gradient; and determining the product of the correction amplitude corresponding to the vehicle weight, the correction amplitude corresponding to the current road surface gradient and the correction amplitude corresponding to the current temperature as an association relation.
Specifically, a first correction amplitude corresponding to the weight of the vehicle, a second correction amplitude corresponding to the current road surface gradient and a third correction amplitude corresponding to the current temperature are determined, then the product of the first correction amplitude, the second correction amplitude and the third correction amplitude is calculated, and the product of the three correction amplitudes is an association relation.
For example, the first correction range is 110%, the second correction range is 150%, and the third correction range is 130%, and the association is 110%, 150%, 130% = 214.5%; the first correction range is 110%, the second correction range is 50%, and the third correction range is 130%, and the association relationship is 110% ×50% ×130% =71.5%.
In some embodiments, the magnitude of the correction for the vehicle weight, the magnitude of the correction for the current road surface gradient, and the magnitude of the correction for the current temperature are determined based on the current operating condition of the vehicle.
Specifically, the correction amplitude corresponding to the vehicle weight, the correction amplitude corresponding to the current road surface gradient and the correction amplitude corresponding to the current temperature need to be determined according to the current working condition of the vehicle. For example, if the vehicle is in an uphill state, the torque of the vehicle is greatly affected by the current road gradient, and the larger the road gradient is, the larger the torque required by the vehicle for uphill is, so in the uphill state, as the current road gradient is increased, the second correction amplitude also needs to be increased, so that the torque can be rapidly increased, the rapid gear shift can be realized, in order to avoid the excessively rapid gear shift speed, the first correction amplitude corresponding to the vehicle weight can be properly reduced or kept unchanged along with the increase of the vehicle weight, and the third correction amplitude corresponding to the current temperature can also be kept unchanged. If the vehicle is traveling on a gentle road surface, the current road surface gradient remains unchanged, and the vehicle torque is mainly affected by the vehicle weight, at which time the first correction magnitude increases as the vehicle weight increases, thereby achieving a quick shift. The vehicle torque is also affected by the current temperature, since the lower the temperature, the viscosity of the oil increases, so the third correction amplitude decreases as the current temperature decreases.
S103, correcting the torque slope based on the association relation.
Specifically, the association relation is multiplied by the torque slope, so that the corrected torque slope can be obtained, and the automatic transmission shifts according to the corrected torque slope, so that the shift time is improved.
For example, if the torque slope is 2 and the correlation is 200%, the corrected torque slope is 200% ×2=4; if the torque slope is-2 and the association relation is 200%, the corrected torque slope is 200% (-2) = -4, so that the automatic transmission can quickly reach the target torque, and quick gear shifting is realized.
In the embodiment, when the automatic transmission shifts gears, the torque slope of the gear shifting process is corrected according to the weight of the vehicle, the current road slope and the current temperature, so that the automatic transmission shifts gears quickly, smoothly and better in power connection under different working conditions on the premise of not affecting the gear shifting quality of a flat road, and the gear shifting requirement of complex working conditions can be met.
In an alternative embodiment, the torque slope includes at least one of a slope of a torque down process and a slope of a torque up process.
It will be appreciated that the shift process includes a torque down process and a torque up process, and that modifying at least one of the slope of the torque down process and the slope of the torque up process has an effect on the shift time.
The technical scheme of the present application is further described in detail below in conjunction with specific embodiments:
as shown in fig. 2, the torque correction method of the shift process includes:
s201, calculating a vehicle weight from the road gradient, the rolling resistance, the air resistance, the acceleration resistance, and the vehicle driving force while the acceleration of the vehicle remains stable.
S202, when the automatic transmission is shifted, calculating the current road surface gradient according to the weight of the vehicle, rolling resistance, air resistance, acceleration resistance and driving force of the vehicle, and inputting the current environment temperature, the temperature field of an engine compartment and clutch temperature into a temperature model of the automatic transmission to acquire the current temperature.
S203, determining a first correction amplitude of the vehicle weight to the torque slope, and determining a second correction amplitude of the current road surface slope to the torque slope and a third correction amplitude of the current temperature to the torque slope.
S204, determining the product of the first correction amplitude, the second correction amplitude and the third correction amplitude as an association relation.
S205, correcting the torque slope according to the association relation.
In the embodiment, when the automatic transmission shifts gears, the torque slope of the gear shifting process is corrected according to the weight of the vehicle, the current road slope and the current temperature, so that the automatic transmission shifts gears quickly, smoothly and better in power connection under different working conditions on the premise of not affecting the gear shifting quality of a flat road, and the gear shifting requirement of complex working conditions can be met.
In summary, according to the torque correction method for the gear shifting process of the embodiment of the invention, when the automatic transmission shifts gears, the current road gradient and the current temperature are determined, and the torque gradient in the gear shifting process is corrected according to the weight of the vehicle, the current road gradient and the current temperature, so that the automatic transmission shifts gears quickly and smoothly under different working conditions, the power connection is better, and the gear shifting requirement of complex working conditions can be met.
Corresponding to the above embodiments, the embodiments of the present invention also provide a computer-readable storage medium having stored thereon a torque correction program of a shift process that when executed by a processor implements the torque correction method of the shift process of any of the previous embodiments.
According to the computer readable storage medium, through the computer program for executing the torque correction method of the gear shifting process, the torque slope of the gear shifting process is corrected according to the weight of the vehicle, the current road slope and the current temperature, so that the automatic transmission can be shifted quickly and smoothly under different working conditions, the power connection is better, and the gear shifting requirement of complex working conditions can be met.
Corresponding to the above embodiment, the embodiment of the invention also provides an electronic device. As shown in fig. 3, the electronic device 100 includes a memory 110, a processor 120, and a torque correction program for a shift process stored in the memory 110 and executable on the processor 120, and when the processor 120 executes the torque correction program for a shift process, the torque correction method for a shift process of any of the foregoing embodiments is implemented.
According to the electronic equipment provided by the embodiment of the invention, the program of the torque correction method of the gear shifting process is executed by the processor, and the torque slope of the gear shifting process is corrected according to the weight of the vehicle, the current road slope and the current temperature, so that the automatic transmission can be shifted quickly, smoothly and better in power connection under different working conditions, and the gear shifting requirement of complex working conditions can be met.
Corresponding to the embodiment, the embodiment of the invention also provides a torque correction device for a gear shifting process, which is applied to an automatic transmission. As shown in fig. 4, the torque correction device of the shift process includes: the first determination module 10, the second determination module 20, the third determination module 30 and the correction module 40.
Wherein the first determination module 10 is configured to determine a current road surface gradient according to a vehicle weight in a case of a shift of the automatic transmission; the second determination module 20 is used for determining the current temperature of the automatic transmission in the case of gear shifting of the automatic transmission; the third determining module 30 is configured to determine a correlation of the vehicle weight, the current road surface gradient, and the current temperature to correct the torque gradient of the automatic transmission; the correction module 40 is configured to correct the torque slope based on the association relationship.
In some embodiments, the third determination module 30 is further to: respectively determining the vehicle weight, the current road gradient and the correction amplitude of the current temperature to the torque gradient; and determining the product of the correction amplitude corresponding to the vehicle weight, the correction amplitude corresponding to the current road surface gradient and the correction amplitude corresponding to the current temperature as an association relation.
In some embodiments, the magnitude of the correction for the vehicle weight, the magnitude of the correction for the current road surface gradient, and the magnitude of the correction for the current temperature are determined based on the current operating condition of the vehicle.
In some embodiments, as shown in fig. 5, the apparatus further includes a fourth determining module 50, where the fourth determining module 50 is configured to: the vehicle weight is determined based on the road gradient, the rolling resistance, the air resistance, the acceleration resistance, and the vehicle driving force with the acceleration of the vehicle kept stable, before the current road gradient is determined based on the vehicle weight.
In some embodiments, the vehicle weight is calculated according to the following formula:wherein (1)>Is the driving force of the vehicle, gf is the rolling resistance,for air resistance>For accelerating resistance, T tq For engine torque, i g I is the transmission ratio, i 0 Is the transmission ratio of the main speed reducer, eta t For driveline mechanical efficiency, r is wheel rolling radius, G is vehicle weight, f is rolling resistance coefficient, C d A is the windward area of the vehicle, u is the air resistance coefficient a I is road gradient, δ is a rotational mass conversion coefficient of the vehicle, m is the mass of the vehicle, +.>Is acceleration.
In some embodiments, the first determination module 10 is further configured to: the current road surface gradient is determined based on the vehicle weight, rolling resistance, air resistance, acceleration resistance, and vehicle driving force.
In some embodiments, the second determination module 20 is further configured to: the current temperature is determined based on the current ambient temperature, the temperature field of the engine compartment, and the clutch temperature.
It should be noted that, the specific implementation manner of the torque correction device in the gear shift process according to the embodiment of the present invention corresponds to the specific implementation manner of the torque correction method in the gear shift process according to the embodiment of the present invention, and will not be described herein.
According to the torque correction device for the gear shifting process, when the automatic transmission shifts gears, the current road gradient is determined through the first determination module, the current temperature is determined through the second determination module, the association relation of the vehicle weight, the current road gradient and the current temperature for correcting the torque gradient in the gear shifting process is determined through the third determination module, and the torque gradient is corrected through the correction module according to the association relation, so that the automatic transmission shifts gears in different working conditions quickly, smoothly and better in power connection, and the gear shifting requirement of complex working conditions can be met.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, for example, may be considered as a ordered listing of executable instructions for implementing logical functions, and may be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Furthermore, the terms "first," "second," and the like, as used in embodiments of the present invention, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying any particular number of features in the present embodiment. Thus, a feature of an embodiment of the invention that is defined by terms such as "first," "second," etc., may explicitly or implicitly indicate that at least one such feature is included in the embodiment. In the description of the present invention, the word "plurality" means at least two or more, for example, two, three, four, etc., unless explicitly defined otherwise in the embodiments.
In the present invention, unless explicitly stated or limited otherwise in the examples, the terms "mounted," "connected," and "fixed" as used in the examples should be interpreted broadly, e.g., the connection may be a fixed connection, may be a removable connection, or may be integral, and it may be understood that the connection may also be a mechanical connection, an electrical connection, etc.; of course, it may be directly connected, or indirectly connected through an intermediate medium, or may be in communication with each other, or in interaction with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific embodiments.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (10)

1. A torque correction method for a shift process, applied to an automatic transmission, the method comprising:
determining a current road surface gradient according to a vehicle weight and determining a current temperature of the automatic transmission under the condition that the automatic transmission is shifted;
determining an association of the vehicle weight, the current road surface gradient and the current temperature to correct a torque gradient of the automatic transmission;
and correcting the torque slope based on the association relation.
2. The method of claim 1, wherein determining an association of the vehicle weight, the current road surface gradient, and the current temperature to correct a torque gradient of the automatic transmission comprises:
determining the vehicle weight, the current road surface gradient and the correction amplitude of the current temperature to the torque gradient respectively;
and determining the product of the correction amplitude corresponding to the vehicle weight, the correction amplitude corresponding to the current road surface gradient and the correction amplitude corresponding to the current temperature as the association relation.
3. The method of claim 2, wherein the magnitude of the correction for the vehicle weight, the magnitude of the correction for the current road surface grade, and the magnitude of the correction for the current temperature are determined based on a current operating condition of the vehicle.
4. The method of claim 1, wherein prior to determining the current road surface grade from the vehicle weight, the method further comprises:
the vehicle weight is determined based on the road gradient, the rolling resistance, the air resistance, the acceleration resistance, and the vehicle driving force with the acceleration of the vehicle kept stable.
5. The method of claim 4, wherein the vehicle weight is calculated according to the following formula:
wherein,for the vehicle driving force, gf is the rolling resistance,>in order to provide the air resistance as described above,for the acceleration resistance, T tq For engine torque, i g I is the transmission ratio, i 0 Is the transmission ratio of the main speed reducer, eta t For mechanical efficiency of the drive train, r is the wheel rolling radius, G is the vehicle weight, f is the rolling resistance coefficient, C d Is the air resistance coefficient, A is the windward area of the vehicle, u a For the speed of the vehicle i is the road grade, delta is the rotational mass conversion factor of the vehicle, m is the mass of the vehicle, +.>Is the acceleration.
6. The method of any one of claims 1-5, wherein determining a current road surface grade from the vehicle weight comprises:
and determining the current road surface gradient according to the vehicle weight, the rolling resistance, the air resistance, the acceleration resistance and the vehicle driving force.
7. The method of any one of claims 1-5, wherein determining a current temperature of the automatic transmission comprises:
the current temperature is determined based on the current ambient temperature, the temperature field of the engine compartment, and the clutch temperature.
8. A computer readable storage medium, characterized in that a torque correction program of a shift process is stored thereon, which torque correction program of a shift process, when executed by a processor, implements the torque correction method of a shift process according to any one of claims 1-7.
9. An electronic device comprising a memory, a processor and a torque correction program for a shift process stored on the memory and executable on the processor, the processor implementing the torque correction method for a shift process according to any one of claims 1-7 when executing the torque correction program for a shift process.
10. A torque correction device for a shift process, for use in an automatic transmission, the device comprising:
a first determination module for determining a current road surface gradient according to a vehicle weight in a case of shifting of the automatic transmission;
a second determination module for determining a current temperature of the automatic transmission in a case of a shift of the automatic transmission;
a third determination module configured to determine a correlation of the vehicle weight, the current road surface gradient, and the current temperature to correct a torque gradient of the automatic transmission;
and the correction module is used for correcting the torque slope based on the association relation.
CN202311466865.2A 2023-11-06 2023-11-06 Torque correction method and device for gear shifting process, electronic equipment and storage medium Pending CN117404462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311466865.2A CN117404462A (en) 2023-11-06 2023-11-06 Torque correction method and device for gear shifting process, electronic equipment and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311466865.2A CN117404462A (en) 2023-11-06 2023-11-06 Torque correction method and device for gear shifting process, electronic equipment and storage medium

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CN117404462A true CN117404462A (en) 2024-01-16

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