CN117847204A - Vehicle gear shift control method, device, equipment and storage medium - Google Patents
Vehicle gear shift control method, device, equipment and storage medium Download PDFInfo
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Abstract
The invention discloses a vehicle gear shift control method, a device, equipment and a storage medium, comprising the following steps: acquiring the current gear and the weight of the whole vehicle of the target vehicle in real time, and determining a vehicle starting gear according to the weight of the whole vehicle when the current gear is neutral; controlling the target vehicle to run in a vehicle starting gear; acquiring running data of a target vehicle in real time, and performing shift control on the target vehicle according to the running data and a preset shift reference table when the weight of the whole vehicle is greater than or equal to a vehicle heavy load threshold value so as to enable the target vehicle to run according to a shifted target gear; the driving data comprise vehicle speed, gradient and accelerator opening; the preset shift reference table includes a mapping relationship between each of the traveling data thresholds of the target vehicle and the shift operation. According to the technical scheme, the accuracy and the reliability of vehicle gear shifting control are improved.
Description
Technical Field
The present invention relates to the field of vehicle technologies, and in particular, to a vehicle gear shift control method, device, equipment, and storage medium.
Background
Currently, in order to meet the requirements of high vehicle speed and large climbing, a multi-gear transmission is required to be configured for new energy heavy truck and mining truck vehicles. Conventional heavy or mining truck transmissions include automatic transmissions (Automatic Transmission, AT) and electro-mechanical automatic transmissions (Automatic Mechanical Transmission, AMT). Compared with the AT transmission, the AMT transmission has lower cost, so that the AMT automatic transmission is configured by both the new energy mining card and the heavy truck AT present.
Existing AMT shift control schemes include an automatic mode and a manual mode. Specifically, the automatic mode shifts with a single motor speed parameter or a dual motor and throttle related parameter. The manual mode shifts with the driver's shifter handle as input.
However, since the existing automatic mode does not take into account the influence of the road gradient on the gear selection, shifting by the existing automatic mode may result in inaccurate shift results. Secondly, because the operation condition of heavy truck or ore truck is mostly heavy load uphill or heavy load downhill, and the vehicle has the risk of backward running or forward running out of control caused by the fact that the vehicle is not up-shifted yet, the manual mode is adopted in the heavy load operation process. The shifting by the manual mode requires too much reliance on the driver, resulting in less accurate and reliable shift results.
Disclosure of Invention
The invention provides a vehicle gear shift control method, a device, equipment and a storage medium, which improve the accuracy and reliability of vehicle gear shift control.
In a first aspect, an embodiment of the present invention provides a vehicle shift control method, including: acquiring the current gear and the weight of the whole vehicle of the target vehicle in real time, and determining a vehicle starting gear according to the weight of the whole vehicle when the current gear is neutral; controlling the target vehicle to run in a vehicle starting gear; acquiring running data of a target vehicle in real time, and performing shift control on the target vehicle according to the running data and a preset shift reference table when the weight of the whole vehicle is greater than or equal to a vehicle heavy load threshold value so as to enable the target vehicle to run according to a shifted target gear; the driving data comprise vehicle speed, gradient and accelerator opening; the preset shift reference table includes a mapping relationship between each of the traveling data thresholds of the target vehicle and the shift operation.
Optionally, performing shift control on the target vehicle according to the driving data and a preset shift reference table includes: according to a preset gear shifting reference table, an upshift vehicle speed threshold value, an upshift gradient threshold value and an upshift accelerator threshold value corresponding to the vehicle speed, the gradient and the accelerator opening are respectively obtained; and if the vehicle speed is greater than the upshift vehicle speed threshold value, the gradient is less than the upshift gradient threshold value, and the accelerator opening is less than the upshift accelerator threshold value, upshift control is performed on the target vehicle.
Optionally, performing shift control on the target vehicle according to the driving data and a preset shift reference table includes: according to a preset gear shifting reference table, a gear shifting vehicle speed threshold value, a gear shifting gradient threshold value and a gear shifting accelerator threshold value which correspond to the vehicle speed, the gradient and the accelerator opening are respectively obtained; if the vehicle speed is smaller than the downshift vehicle speed threshold and the accelerator opening is larger than the downshift accelerator threshold, performing downshift control on the target vehicle; or if the gradient is greater than the downshift gradient threshold and the accelerator opening is greater than the downshift accelerator threshold, performing downshift control on the target vehicle.
Optionally, determining the vehicle starting gear according to the weight of the whole vehicle includes: and if the whole vehicle weight is equal to the preset empty vehicle weight, taking the preset empty vehicle driving gear as a vehicle starting gear.
Optionally, determining the vehicle starting gear according to the weight of the whole vehicle includes: if the weight of the whole vehicle is not equal to the preset empty weight, acquiring a driving configuration parameter of the target vehicle, and determining the vehicle output force in an empty state according to the driving configuration parameter and the preset empty weight; and determining a vehicle starting gear according to the output force of the vehicle, the preset empty weight and the whole weight.
Optionally, determining the vehicle starting gear according to the vehicle output force, the preset empty weight and the whole weight includes: determining an empty gear ratio according to the output force of the vehicle and the preset empty weight; and determining a vehicle starting gear according to the empty gear ratio and the weight of the whole vehicle.
Optionally, the control target vehicle travels in a vehicle start gear, including: and the transmission is controlled to be switched from the forward gear to the vehicle starting gear through the whole vehicle controller so that the target vehicle runs according to the vehicle starting gear.
In a second aspect, an embodiment of the present invention further provides a vehicle shift control device, including: the starting gear determining module is used for acquiring the current gear of the target vehicle and the weight of the whole vehicle in real time, and determining the starting gear of the vehicle according to the weight of the whole vehicle when the current gear is neutral; the vehicle running module is used for controlling the target vehicle to run in a vehicle starting gear; the gear shift control module is used for acquiring the running data of the target vehicle in real time, and performing gear shift control on the target vehicle according to the running data and a preset gear calibration table when the weight of the whole vehicle is greater than or equal to a vehicle heavy load threshold value so as to enable the target vehicle to run according to the gear shifted target gear; the driving data comprise vehicle speed, gradient and accelerator opening; the preset shift reference table includes a mapping relationship between each of the traveling data thresholds of the target vehicle and the shift operation.
In a third aspect, an embodiment of the present invention further provides a vehicle, including: at least one processor; and a memory communicatively coupled to the at least one processor; the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to perform the vehicle shift control method provided by any one of the embodiments of the present invention.
In a fourth aspect, an embodiment of the present invention further provides a computer readable storage medium storing computer instructions for causing a processor to execute the vehicle shift control method provided in any one of the embodiments of the present invention.
According to the technical scheme provided by the embodiment of the invention, the current gear and the weight of the whole vehicle of the target vehicle are obtained in real time, and when the current gear is neutral, the starting gear of the vehicle is determined according to the weight of the whole vehicle; controlling the target vehicle to run in a vehicle starting gear; acquiring running data of a target vehicle in real time, and performing shift control on the target vehicle according to the running data and a preset shift reference table when the weight of the whole vehicle is greater than or equal to a vehicle heavy load threshold value so as to enable the target vehicle to run according to a shifted target gear; the driving data comprise vehicle speed, gradient and accelerator opening; the preset gear shift reference table comprises the technical means of the mapping relation between each running data threshold value of the target vehicle and gear shift operation, so that the accuracy and reliability of the gear shift control of the vehicle are improved.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a vehicle shift control method according to a first embodiment of the present invention;
FIG. 2 is a flow chart of another vehicle shift control method provided in accordance with a second embodiment of the present invention;
FIG. 3 is a flow chart of another vehicle shift control method provided in accordance with a third embodiment of the present invention;
FIG. 4 is a flow chart of a preferred vehicle shift control method provided in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view of a vehicle shift control device according to a fourth embodiment of the invention;
fig. 6 is a schematic structural diagram of a vehicle according to a fifth embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a flowchart of a vehicle shift control method according to an embodiment of the present invention, which is applicable to a case of shift control of a vehicle, and which may be performed by a vehicle shift control device that may be implemented in hardware and/or software, and which may be configured in a vehicle.
As shown in fig. 1, a vehicle shift control method disclosed in the present embodiment includes:
s110, acquiring the current gear and the weight of the whole vehicle of the target vehicle in real time, and determining the starting gear of the vehicle according to the weight of the whole vehicle when the current gear is neutral.
In the present embodiment, the target vehicle may be a vehicle mounted with an on-vehicle weighing system. The overall vehicle weight may be the sum of the net weight of the target vehicle and its loaded weight.
In one embodiment, the current gear of the target vehicle can be obtained through a gear sensor, and the weight of the whole vehicle can be obtained through an on-board weighing system. Then, it may be determined whether the current gear is neutral. If yes, the vehicle starting gear can be determined according to the weight of the whole vehicle and the type of the vehicle. Specifically, if the weight of the whole vehicle is the same and the types of the vehicles are different, the starting gears of the vehicles are different.
For example, assuming that the target vehicle is parking and charging and the current gear of the target vehicle is neutral, the whole vehicle weight can be acquired in real time through the vehicle-mounted weighing system and sent to the whole vehicle controller. Then, according to the weight of the whole vehicle, the starting gear of the vehicle after the loading of the vehicle is finished can be determined through the whole vehicle controller.
The vehicle starting gear is determined through the weight of the whole vehicle, a driver does not need to manually select the vehicle starting gear, the problem that the vehicle cannot be started due to too high gear selection or the vehicle speed is low due to too low gear selection is avoided, and stable starting of the vehicle is guaranteed.
And S120, controlling the target vehicle to run in the vehicle starting gear.
At this step, in particular, the vehicle start gear may be sent to an automatic transmission control unit (Transmission Control Unit, TCU) by the whole vehicle controller when the current gear is shifted from neutral to forward. Then, the target vehicle can be controlled by the TCU to travel in the vehicle start gear.
And S130, acquiring running data of the target vehicle in real time, and performing shift control on the target vehicle according to the running data and a preset shift reference table when the weight of the whole vehicle is greater than or equal to a vehicle heavy load threshold value so as to enable the target vehicle to run according to the shifted target gear.
In the present embodiment, the running data may include at least one of a vehicle speed, a gradient, an accelerator opening degree, and the like. The preset shift reference table may include a mapping relationship between each of the traveling data thresholds of the target vehicle and the shift operation. In practical application, a shift reference table can be preset to obtain a running data threshold corresponding to each gear of the target vehicle. Alternatively, the travel data threshold may be determined based on a preset user demand or historical travel data of the target vehicle.
In this step, specifically, the vehicle speed can be acquired by a vehicle speed sensor, the gradient of the road surface on which the target vehicle is traveling can be acquired by a gyroscope, and the accelerator opening can be acquired by an accelerator pedal sensor. The gyroscope is arranged in the whole vehicle controller. Then, whether the weight of the whole vehicle is larger than or equal to a heavy load threshold value of the vehicle can be judged. If so, a driving data threshold corresponding to the driving data can be obtained from a preset gear shift reference table. Finally, the running data and the running data threshold value may be compared, and shift control may be performed on the target vehicle according to the comparison result.
The advantage of setting like this is that, compare with the prior art that takes shift handle as the input to shift gears, the technical scheme of this embodiment carries out automatic shift control according to data and the shift reference table of predetermineeing that traveles, has avoided because of the improper problem that leads to the unable acceleration of vehicle to start of driver's selection gear, has improved the accuracy and the reliability of vehicle gear shifting. Secondly, compared with the prior art of shifting gears according to single motor rotation speed parameters or double parameters related to a motor and an accelerator, the technical scheme of the embodiment considers the influence of road gradient on gear selection, and improves the accuracy of shifting gears.
According to the technical scheme, the current gear and the weight of the whole vehicle of the target vehicle are obtained in real time, and when the current gear is neutral, the starting gear of the vehicle is determined according to the weight of the whole vehicle; controlling the target vehicle to run in a vehicle starting gear; and when the weight of the whole vehicle is greater than or equal to the heavy load threshold value of the vehicle, carrying out gear shifting control on the target vehicle according to the running data and a preset gear shifting reference table, so that the target vehicle runs according to the shifted target gear.
Example two
Fig. 2 is a flowchart of another vehicle gear shift control method according to a second embodiment of the present invention, which is further optimized and expanded based on the above embodiments, and may be combined with various alternative solutions in the above embodiments.
As shown in fig. 2, another vehicle shift control method disclosed in the present embodiment includes:
s210, acquiring the current gear and the weight of the whole vehicle of the target vehicle in real time, and determining the starting gear of the vehicle according to the weight of the whole vehicle when the current gear is neutral.
S220, controlling the target vehicle to run in the vehicle starting gear, and acquiring running data of the target vehicle in real time.
The driving data may include a vehicle speed, a gradient, an accelerator opening degree, and the like.
S230, respectively acquiring an upshift vehicle speed threshold value, an upshift gradient threshold value and an upshift accelerator threshold value corresponding to the vehicle speed, the gradient and the accelerator opening according to a preset gear shift reference table.
In the present embodiment, an upshift vehicle speed threshold value, an upshift gradient threshold value, and an upshift accelerator threshold value may be used to determine whether the target vehicle satisfies an upshift condition.
In this step, specifically, when the target vehicle is on a heavy load uphill or a heavy load downhill (i.e., when the weight of the entire vehicle is greater than or equal to the heavy load threshold value of the vehicle), the upshift vehicle speed threshold value, the upshift gradient threshold value and the upshift accelerator threshold value may be obtained according to a preset shift reference table.
S240, if the vehicle speed is greater than an upshift vehicle speed threshold value, the gradient is smaller than an upshift gradient threshold value, and the accelerator opening is smaller than an upshift accelerator threshold value, upshift control is performed on the target vehicle.
The advantage of setting like this is that through being greater than the speed threshold value of upshifting, and the slope is less than the speed threshold value of upshifting, and when the throttle aperture is less than the throttle threshold value of upshifting, carry out automatic upshifting to the target vehicle, can guarantee that the target vehicle is operated with higher speed on the less road of slope or level road, improved vehicle travel speed, practiced thrift vehicle travel cost.
S250, according to a preset gear shift reference table, a gear shift vehicle speed threshold value, a gear shift gradient threshold value and a gear shift accelerator threshold value corresponding to the vehicle speed, the gradient and the accelerator opening are respectively obtained.
In the present embodiment, a downshift vehicle speed threshold, a downshift gradient threshold, and a downshift accelerator threshold may be used to determine whether the target vehicle satisfies a downshift condition.
In this step, specifically, when the target vehicle is on a heavy load uphill slope or a heavy load downhill slope (i.e., when the weight of the whole vehicle is greater than or equal to the heavy load threshold value of the vehicle), the downshift vehicle speed threshold value, the downshift gradient threshold value and the downshift accelerator threshold value may be obtained according to a preset shift reference table.
S260, if the vehicle speed is smaller than a downshift vehicle speed threshold value and the accelerator opening is larger than a downshift accelerator threshold value, performing downshift control on the target vehicle; or if the gradient is greater than the downshift gradient threshold and the accelerator opening is greater than the downshift accelerator threshold, performing downshift control on the target vehicle.
In this step, specifically, in the case where the accelerator opening is larger than the downshift accelerator threshold, if the vehicle speed is smaller than the downshift vehicle speed threshold or the gradient is larger than the downshift gradient threshold, it may be considered that the climbing ability of the target vehicle is insufficient in the current gear, and at this time, an automatic downshift may be performed to the target vehicle.
The advantage of this arrangement is that by automatically downshifting when the vehicle speed is less than the downshifting vehicle speed threshold and the accelerator opening is greater than the downshifting accelerator threshold, or when the gradient is greater than the downshifting gradient threshold and the accelerator opening is greater than the downshifting accelerator threshold, it is ensured that the target vehicle has sufficient climbing capacity to travel when the gradient becomes greater.
And S270, controlling the target vehicle to run according to the target gear after the gear shifting.
According to the technical scheme, the current gear and the weight of the whole vehicle of the target vehicle are obtained in real time, and when the current gear is neutral, the starting gear of the vehicle is determined according to the weight of the whole vehicle; controlling a target vehicle to run in a vehicle starting gear, and acquiring running data of the target vehicle in real time; according to a preset gear shifting reference table, an upshift vehicle speed threshold value, an upshift gradient threshold value and an upshift accelerator threshold value corresponding to the vehicle speed, the gradient and the accelerator opening are respectively obtained; if the vehicle speed is greater than an upshift vehicle speed threshold value, the gradient is smaller than an upshift gradient threshold value, and the accelerator opening is smaller than an upshift accelerator threshold value, upshift control is performed on the target vehicle; according to a preset gear shifting reference table, a gear shifting vehicle speed threshold value, a gear shifting gradient threshold value and a gear shifting accelerator threshold value which correspond to the vehicle speed, the gradient and the accelerator opening are respectively obtained; if the vehicle speed is smaller than the downshift vehicle speed threshold and the accelerator opening is larger than the downshift accelerator threshold, performing downshift control on the target vehicle; or if the gradient is greater than the downshift gradient threshold and the accelerator opening is greater than the downshift accelerator threshold, performing downshift control on the target vehicle; the technical means for controlling the target vehicle to run according to the target gear after the gear shifting solves the problems that the gear shifting is carried out through a manual mode, the gear shifting is required to be too much dependent on a driver, the gear shifting result is not accurate and reliable enough, and the accuracy and reliability of the gear shifting control of the vehicle are improved.
Example III
Fig. 3 is a flowchart of another vehicle gear shift control method according to a third embodiment of the present invention, which is further optimized and expanded based on the above embodiments, and can be combined with various alternative solutions in the above embodiments.
As shown in fig. 3, another vehicle shift control method disclosed in the present embodiment includes:
s310, acquiring the current gear and the whole vehicle weight of the target vehicle in real time.
And S320, when the current gear is neutral, judging whether the weight of the whole vehicle is equal to the preset empty weight, if so, executing S330, and if not, executing S340.
S330, taking the preset idle running gear as a vehicle starting gear.
In the present embodiment, if the entire vehicle weight is equal to the preset empty vehicle weight, the target vehicle may be considered empty, at which time the preset empty vehicle running gear may be regarded as the vehicle start gear. The preset empty vehicle driving gear can be determined according to preset empty vehicle weight or historical driving data.
For example, assuming that the target vehicle is completely unloaded, the current total vehicle weight may be considered to be equal to the preset empty vehicle weight, at which time the preset empty vehicle running gear may be regarded as the vehicle start gear.
The advantage of setting like this is that through will predetermineeing empty car drive gear as the vehicle start gear when the whole car weight equals to predetermineeing empty car weight, has satisfied the demand that needs quick return after the vehicle uninstallation is accomplished, has guaranteed the high-speed travel of target vehicle under empty load.
S340, acquiring driving configuration parameters of the target vehicle, and determining the vehicle output force in the empty state according to the driving configuration parameters and the preset empty weight.
In the present embodiment, the drive configuration parameters may include engine output torque, drive axle speed ratio, tire rolling radius, and the like. The driving configuration parameters of the same vehicle type are the same, and the driving configuration parameters of different vehicle types are different.
In this step, specifically, the empty transmission speed ratio may be determined according to a preset empty weight, and the vehicle output force in the empty state may be determined according to the empty transmission speed ratio, the engine output torque, the transaxle speed ratio, and the tire rolling radius.
The specific calculation formula of the vehicle output force can be as follows:
。
wherein,output force for vehicle, ++>Torque for engine output, +.>For the transmission ratio>For the drive axle speed ratio>Is the tire rolling radius.
S350, determining a vehicle starting gear according to the vehicle output force, the preset empty weight and the whole weight.
In this step, in particular, the output force component of the target vehicle in the heavy load state (i.e.). Then, the transmission speed ratio in the heavy load state can be determined according to the output force component, the whole vehicle weight, the vehicle output force and the preset empty vehicle weight. Finally, the vehicle launch gear may be determined based on the transmission ratio under heavy load.
Alternatively, since the engine output torque, the drive axle speed ratio and the tire rolling radius of the same vehicle type are the same, the vehicle starting gear can be determined according to the weight of the whole vehicle. The engine output torque, the drive axle speed ratio and the tire rolling radius of different vehicle types are different, so that the vehicle starting gear needs to be comprehensively determined according to the engine output torque, the drive axle speed ratio, the tire rolling radius and the weight of the whole vehicle.
In an alternative implementation of the embodiment of the present invention, determining a vehicle starting gear according to a vehicle output force, a preset empty weight and a total weight includes: determining an empty gear ratio according to the output force of the vehicle and the preset empty weight; and determining a vehicle starting gear according to the empty gear ratio and the weight of the whole vehicle.
In one embodiment, the ratio of the output force component to the weight of the entire vehicle may be determined. Then, the vehicle starting gear can be determined according to the ratio of the output force component to the weight of the whole vehicle and the ratio of the idle gear. Optionally, in order to ensure that the starting capability of the target vehicle is equivalent to that of the empty vehicle, a ratio of the output force of the vehicle in a heavy load state to the weight of the whole vehicle can be set to be equal to the ratio of the empty vehicle gear, and then the starting gear of the vehicle is determined according to the ratio of the empty vehicle gear, the weight of the whole vehicle and the output force component.
The determination principle of the vehicle starting gear is as follows: since vehicle launch ability is proportional to vehicle output force (i.e., the greater the vehicle output force, the stronger the vehicle launch ability) and vehicle launch ability is inversely proportional to vehicle weight (i.e., the heavier the vehicle, the worse the launch ability). Therefore, in order to ensure that the starting capability of the target vehicle is equivalent to that of the empty vehicle, it is necessary to increase the output force of the vehicle with the increase of the weight of the whole vehicle, that is, to adjust the speed ratio of the transmission according to the weight of the whole vehicle.
S360, controlling the transmission to be switched from the forward gear to the vehicle starting gear through the whole vehicle controller so that the target vehicle runs according to the vehicle starting gear.
In this embodiment, the vehicle start gear may be sent to the TCU when the target vehicle is shifted from neutral to forward. Then, a shift operation may be performed by the TCU control transmission to cause the target vehicle to travel in accordance with the vehicle start gear.
And S370, acquiring running data of the target vehicle in real time, and performing shift control on the target vehicle according to the running data and a preset shift reference table when the weight of the whole vehicle is greater than or equal to a vehicle heavy load threshold value, so that the target vehicle runs according to the shifted target gear.
The advantage of setting like this is that through carrying out shift control to the target vehicle according to data and the shift reference table of predetermineeing, avoided full load and empty load different, the driver needs the manual different gears of selecting according to whole car weight, leads to driving operation inconvenient problem, has improved vehicle gear shift speed.
According to the technical scheme, whether the weight of the whole vehicle is equal to the preset empty weight is judged when the current gear is neutral; if yes, taking the preset empty vehicle driving gear as a vehicle starting gear; if not, acquiring driving configuration parameters of the target vehicle, and determining the vehicle output force in the empty state according to the driving configuration parameters and the preset empty weight; determining a vehicle starting gear according to the output force of the vehicle, the preset empty weight and the whole weight; the method comprises the steps that through a whole vehicle controller, a transmission is controlled to be switched from a forward gear to a vehicle starting gear, so that a target vehicle runs according to the vehicle starting gear; the method comprises the steps of acquiring running data of a target vehicle in real time, and carrying out gear shifting control on the target vehicle according to the running data and a preset gear shifting reference table, so that the target vehicle runs according to a target gear after gear shifting, the problems that the gear shifting is carried out through a manual mode, excessive dependence on a driver is needed, and the gear shifting result is inaccurate and reliable are solved, and the accuracy and reliability of the gear shifting control of the vehicle are improved.
Fig. 4 is a flowchart of a preferred vehicle shift control method provided in accordance with an embodiment of the present invention. Taking the target vehicle as a new energy vehicle as an example, as shown in fig. 4, it may be determined whether the current gear is neutral. And if the current gear is neutral, judging whether the weight of the whole vehicle is equal to the preset empty weight. And if the whole vehicle weight is equal to the preset empty vehicle weight, taking the preset empty vehicle driving gear as a vehicle starting gear. And if the weight of the whole vehicle is not equal to the preset empty weight, determining a vehicle starting gear according to the weight of the whole vehicle. The specific determination process of the vehicle starting gear is as follows: and determining a vehicle starting gear through the whole vehicle controller, and sending the vehicle starting gear to the TCU. Then, a shift operation is performed by the TCU control transmission.
If the current gear is not neutral, it is determined whether a vehicle shift condition is satisfied. And if the vehicle speed is greater than the upshift vehicle speed threshold value, the gradient is less than the upshift gradient threshold value, and the accelerator opening is less than the upshift accelerator threshold value, upshift control is performed on the target vehicle. If the vehicle speed is smaller than the downshift vehicle speed threshold and the accelerator opening is larger than the downshift accelerator threshold, performing downshift control on the target vehicle; or if the gradient is greater than the downshift gradient threshold and the accelerator opening is greater than the downshift accelerator threshold, performing downshift control on the target vehicle. If the vehicle shift condition is not satisfied, the control target vehicle maintains the current gear. The specific determination process of the target gear is as follows: and determining a target gear through the whole vehicle controller and sending the target gear to the TCU. Then, a shift operation is performed by the TCU.
Example IV
Fig. 5 is a schematic structural diagram of a vehicle shift control device according to a fourth embodiment of the present invention, where the present embodiment is applicable to a case of shift control of a vehicle, the vehicle shift control device may be implemented in hardware and/or software, and may be configured in the vehicle.
As shown in fig. 5, the vehicle shift control device disclosed in the present embodiment includes: the starting gear determining module 51 is configured to obtain a current gear of the target vehicle and a weight of the entire vehicle in real time, and determine a starting gear of the vehicle according to the weight of the entire vehicle when the current gear is neutral; a vehicle running module 52 for controlling the target vehicle to run in the vehicle start gear; the shift control module 53 is configured to acquire running data of a target vehicle in real time, and perform shift control on the target vehicle according to the running data and a preset gear calibration table when the weight of the whole vehicle is greater than or equal to a heavy load threshold of the vehicle, so that the target vehicle runs according to the shifted target gear; the driving data comprise vehicle speed, gradient and accelerator opening; the preset shift reference table includes a mapping relationship between each of the traveling data thresholds of the target vehicle and the shift operation.
According to the technical scheme, the gear determining module, the vehicle driving module and the gear shifting control module are mutually matched, so that the problem that a driver is required to be relied on too much to shift gears in a manual mode, the gear shifting result is inaccurate and reliable is solved, and the accuracy and reliability of vehicle gear shifting control are improved.
Optionally, the shift control module 53 includes: an upshift threshold value obtaining unit, configured to obtain an upshift vehicle speed threshold value, an upshift gradient threshold value, and an upshift accelerator threshold value corresponding to a vehicle speed, a gradient, and an accelerator opening degree, respectively, according to a preset shift reference table; an upshift control unit for upshift controlling the target vehicle if the vehicle speed is greater than an upshift vehicle speed threshold value, the gradient is smaller than an upshift gradient threshold value, and the accelerator opening is smaller than an upshift accelerator threshold value; a downshift threshold acquiring unit for acquiring a downshift vehicle speed threshold, a downshift gradient threshold and a downshift accelerator threshold corresponding to the vehicle speed, the gradient and the accelerator opening according to a preset shift reference table, respectively; a downshift control unit for performing downshift control on the target vehicle if the vehicle speed is less than a downshift vehicle speed threshold and the accelerator opening is greater than a downshift accelerator threshold; or if the gradient is greater than the downshift gradient threshold and the accelerator opening is greater than the downshift accelerator threshold, performing downshift control on the target vehicle.
Optionally, the starting gear determining module 51 includes: the idle gear determining unit is used for taking the preset idle running gear as a vehicle starting gear if the weight of the whole vehicle is equal to the preset idle weight; the vehicle output force determining unit is used for acquiring driving configuration parameters of the target vehicle if the weight of the whole vehicle is not equal to the preset empty weight, and determining the vehicle output force in the empty state according to the driving configuration parameters and the preset empty weight; the load gear unit is used for determining a vehicle starting gear according to the output force of the vehicle, the preset empty weight and the weight of the whole vehicle; the gear ratio determining unit is used for determining an empty vehicle gear ratio according to the output force of the vehicle and the preset empty vehicle weight; and the starting gear determining unit is used for determining the starting gear of the vehicle according to the empty gear ratio and the weight of the whole vehicle.
Optionally, the vehicle travel module 52 includes: and the vehicle running unit is used for controlling the transmission to be switched from the forward gear to the vehicle starting gear through the whole vehicle controller so as to enable the target vehicle to run according to the vehicle starting gear.
The vehicle gear shift control device provided by the embodiment of the invention can execute the vehicle gear shift control method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. Reference may be made to the description of any method embodiment herein for details not described in this embodiment.
Example five
Fig. 6 shows a schematic structural diagram of a vehicle 10 that may be used to implement an embodiment of the present invention.
As shown in fig. 6, the vehicle 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the vehicle 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14. Specifically, the processor 11 may be a vehicle controller.
Various components in the vehicle 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the vehicle 10 to exchange information/data with other devices via a computer network such as the internet and/or various telecommunications networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as a vehicle shift control method.
In some embodiments, the vehicle shift control method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the vehicle 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the vehicle shift control method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the vehicle shift control method in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), complex Programmable Logic Devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on a vehicle having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and pointing device (e.g., a mouse or a trackball) by which a user can provide input to the vehicle. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A vehicle shift control method, characterized by comprising:
acquiring the current gear and the weight of the whole vehicle of a target vehicle in real time, and determining a vehicle starting gear according to the weight of the whole vehicle when the current gear is neutral;
controlling a target vehicle to run in the vehicle starting gear;
acquiring running data of a target vehicle in real time, and performing shift control on the target vehicle according to the running data and a preset shift reference table when the weight of the whole vehicle is greater than or equal to a vehicle heavy load threshold value so as to enable the target vehicle to run according to a shifted target gear;
wherein the driving data comprise vehicle speed, gradient and accelerator opening; the preset gear shift reference table comprises a mapping relation between each driving data threshold value of the target vehicle and gear shift operation.
2. The method according to claim 1, wherein the shift control of the target vehicle according to the running data and a preset shift reference table includes:
according to the preset gear shifting reference table, an upshift vehicle speed threshold value, an upshift gradient threshold value and an upshift accelerator threshold value corresponding to the vehicle speed, the gradient and the accelerator opening are respectively obtained;
and if the vehicle speed is greater than the upshift vehicle speed threshold value, the gradient is less than the upshift gradient threshold value, and the accelerator opening is less than the upshift accelerator threshold value, upshift control is performed on the target vehicle.
3. The method according to claim 1, wherein the shift control of the target vehicle according to the running data and a preset shift reference table includes:
according to the preset gear shifting reference table, a gear shifting vehicle speed threshold value, a gear shifting gradient threshold value and a gear shifting accelerator threshold value which correspond to the vehicle speed, the gradient and the accelerator opening are respectively obtained;
if the vehicle speed is smaller than the downshift vehicle speed threshold and the accelerator opening is larger than the downshift accelerator threshold, performing downshift control on the target vehicle; or,
and if the gradient is greater than the downshift gradient threshold and the accelerator opening is greater than the downshift accelerator threshold, performing downshift control on the target vehicle.
4. The method of claim 1, wherein said determining a vehicle starting gear based on said vehicle weight comprises:
and if the weight of the whole vehicle is equal to the weight of the preset empty vehicle, taking the preset empty vehicle driving gear as a vehicle starting gear.
5. The method of claim 1, wherein said determining a vehicle starting gear based on said vehicle weight comprises:
if the weight of the whole vehicle is not equal to the preset empty weight, acquiring a driving configuration parameter of a target vehicle, and determining the vehicle output force in an empty state according to the driving configuration parameter and the preset empty weight;
and determining a vehicle starting gear according to the vehicle output force, the preset empty weight and the whole vehicle weight.
6. The method of claim 5, wherein determining a vehicle starting gear based on the vehicle output force, a preset empty weight, and a full vehicle weight comprises:
determining a blank gear ratio according to the vehicle output force and a preset blank weight;
and determining a vehicle starting gear according to the idle gear ratio and the whole vehicle weight.
7. The method according to claim 1, characterized in that the control-target vehicle runs in the vehicle start gear, comprising:
and the speed changer is controlled to be switched from the forward gear to the vehicle starting gear through the whole vehicle controller so that the target vehicle runs according to the vehicle starting gear.
8. A vehicle shift control device, characterized by comprising:
the starting gear determining module is used for acquiring the current gear of the target vehicle and the weight of the whole vehicle in real time, and determining the starting gear of the vehicle according to the weight of the whole vehicle when the current gear is neutral;
the vehicle driving module is used for controlling the target vehicle to drive in the vehicle starting gear;
the gear shifting control module is used for acquiring the running data of the target vehicle in real time, and performing gear shifting control on the target vehicle according to the running data and a preset gear calibration table when the weight of the whole vehicle is greater than or equal to a vehicle heavy load threshold value so as to enable the target vehicle to run according to the shifted target gear; wherein the driving data comprise vehicle speed, gradient and accelerator opening; the preset gear shift reference table comprises a mapping relation between each driving data threshold value of the target vehicle and gear shift operation.
9. A vehicle, characterized in that the vehicle comprises:
at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the vehicle shift control method of any one of claims 1-7.
10. A computer readable storage medium storing computer instructions for causing a processor to implement the vehicle shift control method of any one of claims 1-7 when executed.
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| CN202410257356.7A CN117847204A (en) | 2024-03-07 | 2024-03-07 | Vehicle gear shift control method, device, equipment and storage medium |
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| CN202410257356.7A CN117847204A (en) | 2024-03-07 | 2024-03-07 | Vehicle gear shift control method, device, equipment and storage medium |
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