CN112963527B - Vehicle control method, device, storage medium, electronic device and vehicle - Google Patents
Vehicle control method, device, storage medium, electronic device and vehicle Download PDFInfo
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- CN112963527B CN112963527B CN202110219626.1A CN202110219626A CN112963527B CN 112963527 B CN112963527 B CN 112963527B CN 202110219626 A CN202110219626 A CN 202110219626A CN 112963527 B CN112963527 B CN 112963527B
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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
- F16H61/04—Smoothing ratio shift
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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
- F16H61/04—Smoothing ratio shift
- F16H61/0403—Synchronisation before shifting
Abstract
The invention discloses a vehicle control method, a vehicle control device, a storage medium, electronic equipment and a vehicle, wherein the method comprises the following steps: in the process of sliding and downshifting of the vehicle, acquiring the stage of a clutch of the vehicle, wherein the stage comprises an oil filling stage, a rotating speed synchronization stage and a power torque interaction stage; if the clutch is in an oil filling stage or a rotating speed synchronization stage and an accelerator pedal signal is detected, acquiring the engine torque, the next-gear clutch torque and the calibrated first torque interaction time of the vehicle when the clutch is in a power torque interaction stage; and controlling the clutch according to the engine torque, the next-gear clutch torque and the calibrated first torque interaction time. Therefore, the stable transition change of the torque of the clutch is realized, the anti-interference capability of the torque exchange process to external excitation is improved, the system impact and abnormal sound generated by the synchronous tail end when the gradient difference between the engine rotating speed and the next gear shaft speed is larger are improved, and the driving comfort of the whole vehicle is improved.
Description
Technical Field
The present invention relates to the field of automotive technologies, and in particular, to a vehicle control method, a vehicle control device, a computer-readable storage medium, an electronic device, and a vehicle.
Background
For an automatic transmission, a coasting downshift is converted into an accelerator-stepping downshift working condition, an engine rotating speed synchronous control strategy directly influences gear shifting smoothness and NVH performance, for example, in the gear shifting process, the problems of shaking and abnormal noise and the like easily occur, especially in the tail end control process that the engine rotating speed and the rotating speed of the next gear shaft are synchronous, as the gradient difference exists between the engine rotating speed change gradient and the rotating speed change gradient of the next gear shaft in the synchronous process, when the gradient difference of the synchronous tail end is overlarge, and meanwhile, the combination of a target gear clutch is fast (the torque rising gradient is fast), overlarge impact can be generated on a transmission system, so that the shaking and abnormal noise and the like of the whole vehicle are caused to influence the driving quality and the NVH problem.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, a first objective of the present invention is to provide a vehicle control method, which can improve system impact and abnormal sound generated at the end of synchronization when the gradient difference between the engine speed and the next gear shaft speed is large, and improve the driving comfort of the whole vehicle.
A second object of the present invention is to provide a vehicle control device.
A third object of the invention is to propose a computer-readable storage medium.
A fourth object of the invention is to propose an electronic device.
A fifth object of the invention is to propose a vehicle.
In order to achieve the above object, a vehicle control method according to an embodiment of a first aspect of the present invention includes: in the process of vehicle sliding downshift, obtaining the stage of a clutch of the vehicle, wherein the stage comprises an oil filling stage, a rotating speed synchronization stage and a power torque interaction stage; if the clutch is in the oil filling stage or the rotating speed synchronization stage and an accelerator pedal signal is detected, when the clutch is in the power torque interaction stage, obtaining the engine torque, the next gear clutch torque and the calibrated first torque interaction time of the vehicle; and controlling the clutch according to the engine torque, the next-gear clutch torque and the calibrated first torque interaction time.
According to the vehicle control method, in the process of vehicle sliding downshift, the stage where the clutch of the vehicle is located is obtained, wherein the stage comprises an oil filling stage, a rotating speed synchronization stage and a power torque interaction stage, if the clutch is located in the oil filling stage or the rotating speed synchronization stage and an accelerator pedal signal is detected, when the clutch is located in the power torque interaction stage, the engine torque, the next gear clutch torque and the calibrated first torque interaction time of the vehicle are obtained, and the clutch is controlled according to the engine torque, the next gear clutch torque and the calibrated first torque interaction time. Therefore, the stable transition change of the torque of the clutch is realized, the anti-interference capability of the torque exchange process to external excitation is improved, the system impact and abnormal sound generated by the synchronous tail end when the gradient difference between the engine rotating speed and the next gear shaft speed is larger are improved, and the driving comfort of the whole vehicle is improved.
In addition, the vehicle control method according to the above embodiment of the invention may further have the following additional technical features:
according to one embodiment of the invention, the controlling the clutch according to the engine torque, the next-gear clutch torque and the calibrated first torque interaction time comprises: obtaining a torque increasing step length according to the engine torque, the next gear clutch torque and the calibrated first torque interaction time; obtaining a next gear clutch target torque according to the torque increasing step length and the next gear clutch torque; obtaining a target torque of a clutch of a previous gear according to the target torque of the clutch of the next gear and the engine torque; and controlling the next-gear clutch according to the next-gear clutch target torque, and controlling the previous-gear clutch according to the previous-gear clutch target torque.
According to an embodiment of the present invention, the next-gear clutch target torque and the previous-gear clutch target torque are obtained according to the following formulas: delta T _ next ═ Te-T _ next)/Time _ torquehandler, T _ next _ T ═ T _ next +. delta T _ next, T _ last _ T ═ Te-T _ next, wherein delta T _ next is a torque increasing step length of a current sampling period, Te is engine torque acquired in the current sampling period, T _ next is next clutch torque acquired in the current sampling period, Time _ quehandler is first calibrated torque interaction Time, T _ next _ T is next clutch target torque acquired in the current sampling period, and T _ last _ T is last clutch target torque acquired in the current sampling period.
According to an embodiment of the invention, the vehicle control method further includes: acquiring a driving mode and a gear signal of the vehicle; judging whether the driving mode and the gear signal meet preset conditions or not; if yes, executing the step of obtaining the engine torque, the next gear clutch torque and the calibrated first torque interaction time of the vehicle; and if the engine torque does not meet the preset value, acquiring the engine torque, the calibrated second torque interaction time, the engine rotating speed and the next gear shaft rotating speed of the vehicle, and controlling the clutch according to the engine torque, the calibrated second torque interaction time, the engine rotating speed and the next gear shaft rotating speed.
According to an embodiment of the present invention, if the driving mode and the gear signal are both in a preset calibration list, it is determined that the driving mode and the gear signal satisfy the preset condition, wherein the calibrated first torque interaction time is obtained by searching the preset calibration list according to the driving mode and the gear signal.
According to an embodiment of the invention, the vehicle control method further includes: if the clutch is in the fill phase, obtaining an engine torque and an accelerator pedal signal; obtaining a request torque of the clutch according to the engine torque and an accelerator pedal signal, and controlling the clutch according to the request torque; and if the clutch is in the rotating speed synchronization stage, obtaining a target gradient of the rising of the rotating speed of the engine according to the rotating speed of the next gear shaft, the torque of the engine and the calibrated rotating speed synchronization time, and controlling the clutch through PI regulation to enable the rotating speed of the engine to be adjusted to the shaft speed of the next gear according to the target gradient.
In order to achieve the above object, a vehicle control device according to a second aspect of an embodiment of the present invention includes: the judging module is used for judging the stage of a clutch of the vehicle in the process of vehicle sliding downshift, wherein the stage comprises an oil filling stage, a rotating speed synchronization stage and a power torque interaction stage; the acquisition module is used for acquiring the engine torque, the next gear clutch torque and the calibrated first torque interaction time of the vehicle when the clutch is in the power torque interaction stage; and the control module is used for controlling the clutch according to the engine torque, the next-gear clutch torque and the calibrated first torque interaction time.
According to the vehicle control device provided by the embodiment of the invention, the judging module is used for judging the stage of the clutch of the vehicle in the process of vehicle sliding downshift, wherein the stage comprises an oil charging stage, a rotating speed synchronization stage and a power torque interaction stage, the obtaining module is used for obtaining the engine torque, the next gear clutch torque and the calibrated first torque interaction time of the vehicle when the clutch is in the power torque interaction stage, and the control module is used for controlling the clutch according to the engine torque, the next gear clutch torque and the calibrated first torque interaction time. Therefore, the stable transition change of the torque of the clutch is realized, the anti-interference capability of the torque exchange process to external excitation is improved, the system impact and abnormal sound generated by the synchronous tail end when the gradient difference between the engine rotating speed and the next gear shaft speed is larger are improved, and the driving comfort of the whole vehicle is improved.
To achieve the above object, a computer-readable storage medium according to a third aspect of the present invention is a computer-readable storage medium having a vehicle control program stored thereon, the vehicle control program, when executed by a processor, implementing the vehicle control method as described above.
According to the computer readable storage medium provided by the embodiment of the invention, the processor executes the vehicle control program stored on the processor, so that the stable transition change of the torque of the clutch can be realized, and the anti-interference capability of the torque exchange process on external excitation is improved, thereby improving the system impact and abnormal sound generated by the synchronous tail end when the gradient difference between the engine rotating speed and the next gear shaft speed is larger, and improving the driving comfort of the whole vehicle.
In order to achieve the above object, an electronic device according to a fourth aspect of the present invention includes a memory, a processor, and a vehicle control program stored in the memory, and when the vehicle control program is executed by the processor, the vehicle control method is implemented.
According to the electronic equipment provided by the embodiment of the invention, the processor executes the vehicle control program on the memory, so that the stable transition change of the torque of the clutch can be realized, and the anti-interference capability of the torque exchange process on external excitation is improved, thereby improving the system impact and abnormal sound generated by the synchronous tail end when the gradient difference between the rotating speed of the engine and the speed of the next gear shaft is larger, and improving the driving comfort of the whole vehicle.
In order to achieve the above object, a vehicle according to a fifth aspect of the present invention includes the vehicle control device according to the second aspect of the present invention, or the electronic apparatus according to the fourth aspect of the present invention.
According to the vehicle provided by the embodiment of the invention, the vehicle control device or the electronic equipment can realize stable transition change of the torque of the clutch, and improve the anti-interference capability of the torque exchange process on external excitation, so that system impact and abnormal sound generated at the synchronous tail end when the gradient difference between the rotating speed of an engine and the speed of the next gear shaft is larger are improved, and the driving comfort of the whole vehicle is improved.
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 vehicle control method according to an embodiment of the invention;
FIG. 2 is an operational schematic diagram of a vehicle control method according to an embodiment of the present invention;
FIG. 3 is a flow chart diagram of a vehicle control method according to one embodiment of the invention;
FIG. 4 is a flow chart diagram of a vehicle control method according to one embodiment of the invention;
fig. 5 is a block diagram schematically showing a vehicle control apparatus according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.
A vehicle control method, a vehicle control apparatus, a computer-readable storage medium, an electronic device, and a vehicle of the embodiments of the invention are described below with reference to the drawings.
Fig. 1 is a flowchart illustrating a vehicle control method according to an embodiment of the present invention.
As shown in fig. 1, a vehicle control method includes the steps of:
s101, in the process of vehicle sliding and gear down, obtaining the stage of a clutch of a vehicle, wherein the stage comprises an oil filling stage, a rotating speed synchronization stage and a power torque interaction stage.
Specifically, the clutch may be controlled correspondingly according to the stage in which the clutch of different vehicles is located.
S102, if the clutch is in an oil filling stage or a rotating speed synchronization stage and an accelerator pedal signal is detected, when the clutch is in a power torque interaction stage, obtaining the engine torque, the next-gear clutch torque and the calibrated first torque interaction time of the vehicle.
It can be understood that, as shown in fig. 2, when the clutch is in the oil filling stage or the rotational speed synchronization stage and the user depresses the accelerator pedal, the engine torque, the next-gear clutch torque and the calibrated first torque interaction time of the vehicle can be obtained through the vehicle controller of the vehicle, so that the clutch can be controlled to perform the power torque interaction conveniently.
And S103, controlling the clutch according to the engine torque, the next-gear clutch torque and the calibrated first torque interaction time.
Specifically, as shown in fig. 3, the clutch is controlled according to the engine torque, the next-gear clutch torque and the calibrated first torque interaction time, and the method comprises the following steps:
s201, obtaining a torque increasing step length according to the engine torque, the next-gear clutch torque and the calibrated first torque interaction time.
Alternatively, the torque increase step size may be obtained from the engine torque, the next-gear clutch torque, and the calibrated first torque interaction time by the following equation:
△T_next＝(Te-T_next)/Time_torquehandover，
wherein, Δ T _ next is a torque increase step length of a current sampling period, Te is an engine torque acquired by the current sampling period, T _ next is a next-gear clutch torque acquired by the current sampling period, and Time _ torquehanover is a calibrated first torque interaction Time.
And S202, obtaining the next gear clutch target torque according to the torque increasing step length and the next gear clutch torque.
Alternatively, the next gear clutch target torque may be obtained by the following formula according to the torque increase step and the next gear clutch torque:
T_next_t＝T_next+△T_next，
and T _ next _ T is the next gear clutch target torque obtained in the current sampling period, T _ next is the next gear clutch torque obtained in the current sampling period, and delta T _ next is the torque increasing step length of the current sampling period.
And S203, obtaining the target torque of the clutch of the previous gear according to the target torque of the clutch of the next gear and the engine torque.
Alternatively, the previous gear clutch target torque may be obtained by the following formula based on the next gear clutch target torque and the engine torque:
T_last_t＝Te-T_next，
wherein, T _ last _ T is the target torque of the clutch of the previous gear obtained in the current sampling period, Te is the engine torque obtained in the current sampling period, and T _ next _ T is the target torque of the clutch of the next gear obtained in the current sampling period.
And S204, controlling the next-gear clutch according to the next-gear clutch target torque, and controlling the previous-gear clutch according to the previous-gear clutch target torque.
It is understood that the torque transfer of the previous clutch and the next clutch is achieved by lowering the previous clutch torque to the previous clutch target torque and simultaneously raising the next clutch torque to the next clutch target torque.
It should be noted that after the torque transfer of the previous clutch and the next clutch is completed, the previous clutch may be completely de-oiled and opened to control the output of the engine torque through the next clutch, thereby completing the vehicle coasting shift down.
Further, as shown in fig. 4, the vehicle control method further includes:
and S301, acquiring a driving mode and a gear signal of the vehicle.
Optionally, the driving mode of the vehicle may be obtained by the vehicle controller according to an output signal of the vehicle requesting the driving mode (economy, normal, sport, etc.), in addition, the gear signal may include a target gear signal and a current gear signal, and may be used to obtain a gear shifting condition of the vehicle, if the target gear signal is not consistent with the current gear signal, the vehicle may be considered to enter gear shifting control (for example, if the target gear signal > the current gear signal, an upshift action is performed, and if the target gear signal < the current gear signal, a downshift action is performed, where, when the downshift action is finished, the target gear is equal to the current gear)
And S302, judging whether the driving mode and the gear signal meet preset conditions.
Specifically, if the driving mode and the gear signal are both in a preset calibration list, it is determined that the driving mode and the gear signal meet a preset condition, wherein the calibrated first torque interaction time is obtained by searching the preset calibration list according to the driving mode and the gear signal.
It will be appreciated that different driving modes and different gear signals may correspond to different clutch power-torque interaction control strategies for the vehicle.
S3031, if yes, the step of obtaining the engine torque, the next gear clutch torque and the calibrated first torque interaction time of the vehicle is executed.
Specifically, if the driving mode and the gear signal meet preset conditions, the step of obtaining the engine torque, the next gear clutch torque and the calibrated first torque interaction time of the vehicle is executed, so that the clutch is controlled according to the engine torque, the next gear clutch torque and the calibrated first torque interaction time.
And S3032, if the torque does not meet the preset torque limit value, obtaining the engine torque, the calibrated second torque interaction time, the engine rotating speed and the next gear shaft rotating speed of the vehicle, and controlling the clutch according to the engine torque, the calibrated second torque interaction time, the engine rotating speed and the next gear shaft rotating speed.
Specifically, if the driving mode and the gear signal do not satisfy the preset conditions, the engine torque, the calibrated second torque interaction time, the engine speed, and the next gear shaft speed of the vehicle may be obtained through the vehicle controller, so as to control the clutch to continue the existing power torque interaction control strategy (engine speed Ne _ old, previous gear clutch torque T _ last old, and next gear clutch torque T _ next old) as shown in fig. 2, which is not described herein again.
Further, the vehicle control method further includes: if the clutch is in the oil charging stage, obtaining an engine torque and an accelerator pedal signal, obtaining a request torque of the clutch according to the engine torque and the accelerator pedal signal, controlling the clutch according to the request torque, and if the clutch is in the rotating speed synchronization stage, obtaining a target gradient of the rising of the rotating speed of the engine according to the rotating speed of the next gear shaft, the engine torque and the calibrated rotating speed synchronization time, and controlling the clutch through PI regulation to enable the rotating speed of the engine to be adjusted to the speed of the next gear shaft according to the target gradient.
Specifically, when the clutch of the vehicle is in an oil filling stage, the requested torque of the clutch can be obtained according to the engine torque and an accelerator pedal signal, the clutch is controlled according to the requested torque, the position of a valve core is changed by adjusting the current of an electromagnetic valve, so that the clutch completes the oil filling process, the accuracy of the torque transmitted by the clutch is ensured, when the clutch of the vehicle is in a rotating speed synchronization stage, the target gradient of the rising of the rotating speed of the engine is calculated in real time according to the rotating speed of the next gear shaft, the engine torque and the calibrated rotating speed synchronization time, the clutch is controlled through PI adjustment, the rotating speed of the engine is adjusted to the shaft speed of the next gear according to the target gradient, and the rotating speed synchronization of the engine and the shaft speed of the next gear is realized.
In summary, according to the vehicle control method provided by the embodiment of the invention, in the vehicle coasting and downshifting process, the phase where the clutch of the vehicle is located is obtained, wherein the phase includes an oil filling phase, a rotation speed synchronization phase and a power torque interaction phase, if the clutch is in the oil filling phase or the rotation speed synchronization phase and the accelerator pedal signal is detected, when the clutch is in the power torque interaction phase, the engine torque, the next gear clutch torque and the calibrated first torque interaction time of the vehicle are obtained, and the clutch is controlled according to the engine torque, the next gear clutch torque and the calibrated first torque interaction time. Therefore, the stable transition change of the torque of the clutch is realized, the anti-interference capability of the torque exchange process to external excitation is improved, the system impact and abnormal sound generated by the synchronous tail end when the gradient difference between the engine rotating speed and the next gear shaft speed is larger are improved, and the driving comfort of the whole vehicle is improved.
Fig. 5 is a block diagram schematically showing a vehicle control apparatus according to an embodiment of the present invention.
As shown in fig. 5, the vehicle control device 100 includes: a judging module 10, an obtaining module 20 and a control module 30.
Specifically, the judging module 10 is configured to judge a stage of a clutch of a vehicle during a vehicle coasting downshift, where the stage includes an oil charging stage, a rotation speed synchronization stage, and a power torque interaction stage; the obtaining module 20 is configured to obtain an engine torque, a next-gear clutch torque and a calibrated first torque interaction time of the vehicle when the clutch is in a power torque interaction phase; the control module 30 is configured to control the clutch based on the engine torque, the next gear clutch torque, and a calibrated first torque interaction time.
Further, the control module 30 is further configured to obtain a torque increase step size according to the engine torque, the next-gear clutch torque and the calibrated first torque interaction time; obtaining a next gear clutch target torque according to the torque increasing step length and the next gear clutch torque; obtaining a target torque of the clutch of the previous gear according to the target torque of the clutch of the next gear and the torque of the engine; and controlling the next-gear clutch according to the next-gear clutch target torque, and controlling the previous-gear clutch according to the previous-gear clutch target torque.
Further, the control module 30 is further configured to obtain the next-gear clutch target torque and the previous-gear clutch target torque according to the following formulas: the method comprises the steps of determining a Time value of a torque of a transmission, wherein the Time value is a sampling period, and the Time value is a sampling period of a transmission, wherein the Time value is a sampling period of a transmission, and the Time value is a sampling period of a transmission.
Further, the obtaining module 20 is further configured to obtain a driving mode and a gear signal of the vehicle; the judging module 10 is further configured to judge whether the driving mode and the gear signal meet preset conditions; the acquisition module 20 is further configured to perform the steps of acquiring an engine torque, a next gear clutch torque and a calibrated first torque interaction time of the vehicle, if satisfied; if the first gear shaft rotation speed does not meet the first gear shaft rotation speed, obtaining the engine torque of the vehicle, the calibrated second torque interaction time, the engine rotation speed and the next gear shaft rotation speed; the control module 30 is further configured to control the clutch based on the engine torque, the calibrated second torque interaction time, the engine speed, and the next gear speed.
Further, the determining module 10 is further configured to determine that the driving mode and the gear signal meet a preset condition if the driving mode and the gear signal are both in a preset calibration list, where the calibrated first torque interaction time is obtained by searching the preset calibration list according to the driving mode and the gear signal.
Further, the obtaining module 20 is further configured to obtain an engine torque and an accelerator pedal signal if the clutch is in the oil filling stage; the control module 30 is further configured to obtain a requested torque of the clutch according to the engine torque and the accelerator pedal signal, and control the clutch according to the requested torque; and if the clutch is in the rotating speed synchronization stage, obtaining a target gradient of the rotating speed rise of the engine according to the rotating speed of the next gear shaft, the torque of the engine and the calibrated rotating speed synchronization time, and controlling the clutch through PI regulation to adjust the rotating speed of the engine to the shaft speed of the next gear shaft according to the target gradient.
It should be noted that the specific implementation of the vehicle control device according to the embodiment of the present invention corresponds to the specific implementation of the vehicle control method according to the embodiment of the present invention, and details are not repeated herein.
In summary, according to the vehicle control device of the embodiment of the invention, the determining module determines the stage of the clutch of the vehicle in the vehicle coasting and downshift process, wherein the stage includes an oil filling stage, a rotation speed synchronization stage and a power torque interaction stage, the obtaining module obtains the engine torque, the next gear clutch torque and the calibrated first torque interaction time of the vehicle when the clutch is in the power torque interaction stage, and the control module controls the clutch according to the engine torque, the next gear clutch torque and the calibrated first torque interaction time. Therefore, the stable transition change of the torque of the clutch is realized, the anti-interference capability of the torque exchange process to external excitation is improved, the system impact and abnormal sound generated by the synchronous tail end when the gradient difference between the rotating speed of the engine and the speed of the next gear shaft is larger are improved, and the driving comfort of the whole vehicle is improved.
Further, an embodiment of the present invention proposes a computer-readable storage medium on which a vehicle control program is stored, which, when executed by a processor, is capable of implementing the vehicle control method according to the aforementioned embodiment of the present invention.
It should be noted that, for the specific implementation of the vehicle control program stored in the computer-readable storage medium according to the embodiment of the present invention and executed by the processor, reference may be made to the specific implementation of the vehicle control method according to the foregoing embodiment of the present invention, which is not described herein again.
In summary, according to the computer-readable storage medium of the embodiment of the present invention, the processor executes the vehicle control program stored thereon, so that the stable transition change of the clutch torque can be realized, and the anti-interference capability of the torque exchange process to the external excitation is improved, thereby improving the system impact and abnormal sound generated at the synchronous end when the gradient difference between the engine speed and the next gear shaft speed is large, and improving the driving comfort of the entire vehicle.
Further, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a vehicle control program stored on the memory, and when the vehicle control program is executed by the processor, the vehicle control method according to the embodiment of the present invention can be implemented.
It should be noted that, as for the specific implementation of the vehicle control program stored in the memory of the electronic device according to the embodiment of the present invention and executed by the processor, reference may be made to the specific implementation of the vehicle control method according to the foregoing embodiment of the present invention, which is not described herein again.
In conclusion, according to the electronic equipment provided by the embodiment of the invention, the processor executes the vehicle control program on the memory, so that the stable transition change of the torque of the clutch can be realized, and the anti-interference capability of the torque exchange process on external excitation is improved, thereby improving the system impact and abnormal sound generated at the synchronous tail end when the gradient difference between the engine rotating speed and the next gear shaft speed is larger, and improving the driving comfort of the whole vehicle.
Further, an embodiment of the present invention provides a vehicle including the vehicle control device according to the foregoing embodiment of the present invention, or the electronic device according to the foregoing embodiment of the present invention.
It should be noted that, for a specific implementation of the vehicle according to the embodiment of the present invention, reference may be made to the specific implementation of the vehicle control device according to the foregoing embodiment of the present invention, or the specific implementation of the electronic device according to the foregoing embodiment of the present invention, which is not described herein again.
In conclusion, according to the vehicle provided by the embodiment of the invention, by adopting the vehicle control device or the electronic equipment, the stable transition change of the torque of the clutch can be realized, and the anti-interference capability of the torque exchange process on external excitation is improved, so that the system impact and abnormal sound generated at the synchronous tail end when the gradient difference between the engine rotating speed and the next gear shaft speed is larger are improved, and the driving comfort of the whole vehicle is improved.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can 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). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can 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 should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, 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, any one or combination of the following technologies, which are well known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A vehicle control method characterized by comprising the steps of:
in the process of vehicle sliding downshift, acquiring the stage of a clutch of a vehicle, wherein the stage comprises an oil filling stage, a rotating speed synchronization stage and a power torque interaction stage;
if the clutch is in the oil filling stage or the rotating speed synchronization stage and an accelerator pedal signal is detected, acquiring the engine torque, the next-gear clutch torque and the calibrated first torque interaction time of the vehicle when the clutch is in the power torque interaction stage;
controlling the clutch according to the engine torque, the next-gear clutch torque and the calibrated first torque interaction time;
the controlling the clutch according to the engine torque, the next gear clutch torque and the calibrated first torque interaction time comprises the following steps:
Obtaining a torque increasing step length according to the engine torque, the next gear clutch torque and the calibrated first torque interaction time;
obtaining a next gear clutch target torque according to the torque increasing step length and the next gear clutch torque;
obtaining a target torque of a clutch of a previous gear according to the target torque of the clutch of the next gear and the engine torque;
and controlling the clutch of the next gear according to the target torque of the clutch of the next gear, and controlling the clutch of the previous gear according to the target torque of the clutch of the previous gear.
2. The vehicle control method according to claim 1, characterized in that the next-gear clutch target torque and the previous-gear clutch target torque are obtained according to the following formulas:
△T_next= (Te - T_next)/Time_torque handover，
T_next_t =T_next+ △T_next，
T_last_t =Te-T_next，
the method comprises the steps of obtaining a torque increment step length of a current sampling period, obtaining an engine torque by the current sampling period, obtaining a next gear clutch torque by the current sampling period, obtaining a Time _ torque override by the current sampling period, obtaining a calibrated first torque interaction Time by the current sampling period, obtaining a next gear clutch target torque by the current sampling period, and obtaining a previous gear clutch target torque by the current sampling period.
3. The vehicle control method according to any one of claims 1-2, characterized by further comprising:
acquiring a driving mode and a gear signal of the vehicle;
judging whether the driving mode and the gear signal meet preset conditions or not;
if yes, executing the step of obtaining the engine torque, the next gear clutch torque and the calibrated first torque interaction time of the vehicle;
and if the engine torque does not meet the preset value, acquiring the engine torque, the calibrated second torque interaction time, the engine rotating speed and the next gear shaft rotating speed of the vehicle, and controlling the clutch according to the engine torque, the calibrated second torque interaction time, the engine rotating speed and the next gear shaft rotating speed.
4. A vehicle control method according to claim 3, characterized in that it is determined that the driving mode and gear signal fulfil the preset condition if both the driving mode and gear signal are in a preset calibration list, wherein the calibrated first torque interaction time is found from the driving mode and gear signal looking up the preset calibration list.
5. The vehicle control method according to claim 3, characterized by further comprising:
If the clutch is in the fill phase, obtaining engine torque and an accelerator pedal signal;
obtaining a request torque of the clutch according to the engine torque and an accelerator pedal signal, and controlling the clutch according to the request torque;
and if the clutch is in the rotating speed synchronization stage, obtaining a target gradient of the rising of the rotating speed of the engine according to the rotating speed of the next gear shaft, the torque of the engine and the calibrated rotating speed synchronization time, and controlling the clutch through PI regulation to enable the rotating speed of the engine to be adjusted to the rotating speed of the next gear shaft according to the target gradient.
6. A vehicle control apparatus for executing a vehicle control method according to claim 1, comprising:
the judging module is used for judging the stage of a clutch of the vehicle in the process of vehicle sliding downshift, wherein the stage comprises an oil filling stage, a rotating speed synchronization stage and a power torque interaction stage;
the acquisition module is used for acquiring the engine torque, the next gear clutch torque and the calibrated first torque interaction time of the vehicle when the clutch is in the power torque interaction stage;
And the control module is used for controlling the clutch according to the engine torque, the next gear clutch torque and the calibrated first torque interaction time.
7. A computer-readable storage medium on which a vehicle control program is stored, characterized in that the vehicle control program, when executed by a processor, implements the vehicle control method according to any one of claims 1 to 5.
8. An electronic device comprising a memory, a processor, and a vehicle control program stored on the memory, wherein the vehicle control program, when executed by the processor, implements the vehicle control method of any one of claims 1-5.
9. A vehicle characterized by comprising the vehicle control apparatus of claim 6 or the electronic device of claim 8.
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| CN114576282B (en) * | 2022-02-22 | 2024-04-12 | 潍柴雷沃智慧农业科技股份有限公司 | Clutch oil pressure control method and device, electronic equipment, medium and tractor |
| CN114962493B (en) * | 2022-06-01 | 2024-03-19 | 潍柴动力股份有限公司 | PTO clutch control method and device, and computer program product |
| CN115163818A (en) * | 2022-06-29 | 2022-10-11 | 中国第一汽车股份有限公司 | Vehicle gear shifting method and device, electronic equipment and storage medium |
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| EP1450075B1 (en) * | 2003-02-21 | 2013-12-04 | BorgWarner, Inc. | Method of controlling a dual clutch transmission |
| US9493148B2 (en) * | 2011-04-13 | 2016-11-15 | Ford Global Technologies, Llc | Torque modulation in a hybrid vehicle downshift during regenerative braking |
| CN104595477B (en) * | 2015-02-04 | 2017-03-08 | 安徽江淮汽车集团股份有限公司 | Two grades of control methods drop in a kind of wet-type dual-clutch change speed gear box positive-torque that is used for |
| CN107218385B (en) * | 2017-07-21 | 2019-02-26 | 中国第一汽车股份有限公司 | Slide the power downshift control method in downshift |
| CN110848381B (en) * | 2019-10-12 | 2021-04-27 | 中国第一汽车股份有限公司 | Gear-up control method, double-clutch automatic transmission and vehicle |
| CN110886839B (en) * | 2019-12-11 | 2021-05-28 | 山推工程机械股份有限公司 | Bulldozer gear shifting control method and device and computer storage medium |
| CN110925416A (en) * | 2020-02-19 | 2020-03-27 | 盛瑞传动股份有限公司 | Torque-increasing auxiliary control method for power downshift process of P2 hybrid power transmission |
| CN111810627B (en) * | 2020-07-08 | 2021-08-27 | 中国第一汽车股份有限公司 | Double-clutch sliding downshift control method |
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