CN115111360A - Gear shifting control method and device under uphill working condition, vehicle and storage medium - Google Patents
Gear shifting control method and device under uphill working condition, vehicle and storage medium Download PDFInfo
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- CN115111360A CN115111360A CN202210018312.XA CN202210018312A CN115111360A CN 115111360 A CN115111360 A CN 115111360A CN 202210018312 A CN202210018312 A CN 202210018312A CN 115111360 A CN115111360 A CN 115111360A
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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
- F16H61/0437—Smoothing ratio shift by using electrical signals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
The application provides a gear shifting control method and device under an uphill working condition, a vehicle and a storage medium. The method comprises the following steps: when the vehicle is in an uphill working condition, detecting the state of an accelerator pedal in the current period, and calculating a target gear of a gearbox in the current period, and recording the target gear as a first target gear; acquiring an actual gear of a gearbox in the previous period, and recording the actual gear as a first actual gear; if the state of the accelerator pedal in the current period is detected to be a slow stepping state, and the first target gear is smaller than the first actual gear, controlling the gearbox to keep the first actual gear, and after delaying for a preset time length, recalculating the target gear of the gearbox, and recording the target gear as a second target gear; and if the second target gear is the same as the first actual gear, controlling the gearbox to keep the first actual gear. This application is predetermine long through the time delay, provides reaction time for the driver steps on the footboard acceleration rate slowly, frequently switches the fender position when can solving the vehicle upslope, leads to the more loaded down with trivial details problem of shift control, can improve driving experience.
Description
Technical Field
The application relates to the technical field of vehicles, in particular to a gear shifting control method and device under an uphill working condition, a vehicle and a storage medium.
Background
When the vehicle goes up a slope, part of the output power of the whole vehicle is used for counteracting gravity acting in the vertical direction, so that the driving capacity is reduced, and the vehicle speed is reduced. At this time, the driver tends to slowly step the accelerator pedal deep. However, when the vehicle speed decreases, a downshift line may be triggered to downshift the vehicle, and as the depth of the accelerator pedal increases, the vehicle speed gradually increases, and an upshift line may be triggered to upshift the vehicle, so that the vehicle shifts frequently, the shift control is cumbersome, and the driving experience is poor.
Disclosure of Invention
The application provides a gear shifting control method and device under an uphill working condition, a vehicle and a storage medium, and aims to solve the problems that gear shifting is frequently carried out when the vehicle ascends a hill, gear shifting control is complex and driving experience is poor.
In a first aspect, the present application provides a gear shift control method under an uphill condition, including:
when the vehicle is in an uphill working condition, detecting the state of an accelerator pedal in the current period, and calculating the target gear of the gearbox in the current period, and recording as a first target gear;
acquiring an actual gear of a gearbox in the previous period, and recording the actual gear as a first actual gear;
if the state of the accelerator pedal in the current period is detected to be a slow stepping state, and the first target gear is smaller than the first actual gear, controlling the gearbox to keep the first actual gear, and after delaying for a preset time length, recalculating the target gear of the gearbox, and recording the target gear as a second target gear;
and if the second target gear is the same as the first actual gear, controlling the gearbox to keep the first actual gear.
In a possible implementation manner, after the target gear of the transmission is recalculated after the delay time is preset, and is recorded as the second target gear, the shift control method under the uphill condition further includes:
and if the second target gear is the same as the first target gear, controlling the gearbox to be switched to the first target gear.
In one possible implementation, detecting the state of the accelerator pedal in the current cycle includes:
calculating the change rate of the treading depth of the accelerator pedal in the current period;
and if the change rate of the treaded depth of the accelerator pedal in the current period is greater than 0 and smaller than a preset change rate threshold value, determining that the accelerator pedal in the current period is in a slow treading state.
In a possible implementation manner, if it is detected that the accelerator pedal is in a slow-stepping state in the current period, and the first target gear is smaller than the first actual gear, the transmission is controlled to maintain the first actual gear, and after a preset time delay, the target gear of the transmission is recalculated and is recorded as the second target gear, and the shift control method under the uphill condition further includes:
detecting the depth of the accelerator pedal in the current period;
correspondingly, when the accelerator pedal is detected to be in a slow-stepping state in the current period and the first target gear is smaller than the first actual gear, if the stepping depth of the accelerator pedal in the current period is smaller than a preset depth threshold, the gearbox is controlled to keep the first actual gear, and after the delay of a preset time length, the target gear of the gearbox is recalculated and recorded as the second target gear.
In one possible implementation manner, when the vehicle is in an uphill condition, detecting whether an accelerator pedal is in a slow-stepping state in a current period, and calculating a target gear of a transmission in the current period, and before the target gear is recorded as a first target gear, the gear shifting control method under the uphill condition further includes:
acquiring the gradient of a road surface where a vehicle is located;
and if the gradient of the road surface where the vehicle is located is within the preset gradient range, determining that the vehicle is in an uphill working condition.
In one possible implementation, calculating the target gear of the transmission in the current cycle includes:
acquiring the vehicle speed of the current period;
and determining the target gear of the gearbox in the current period according to the vehicle speed in the current period.
In one possible implementation, controlling the gearbox to maintain the first actual gear comprises:
and sending the first actual gear as a target gear to a gearbox controller so that the gearbox controller controls the gearbox to maintain the first actual gear.
In one possible implementation, the gearbox is a rear axle two-speed gearbox.
In a second aspect, the present application provides a shift control device under an uphill condition, comprising:
the first detection module is used for detecting the state of an accelerator pedal in the current period when the vehicle is in an uphill working condition, and calculating the target gear of the gearbox in the current period and recording the target gear as a first target gear;
the acquisition module is used for acquiring the actual gear of the gearbox in the previous period and recording the actual gear as a first actual gear;
the first control module is used for controlling the gearbox to keep a first actual gear if the state of the accelerator pedal in the current period is detected to be a slow-stepping state and the first target gear is smaller than the first actual gear, and recalculating the target gear of the gearbox after delaying for a preset time period and marking as a second target gear;
and the second control module is used for controlling the gearbox to keep the first actual gear if the second target gear is the same as the first actual gear.
In one possible implementation, the shift control device in the uphill condition further includes:
and the third control module is used for controlling the gearbox to be switched to the first target gear if the second target gear is the same as the first target gear.
In a possible implementation manner, the first detection module is specifically configured to:
calculating the change rate of the depth of the accelerator pedal in the current period;
and if the change rate of the treaded depth of the accelerator pedal in the current period is greater than 0 and smaller than a preset change rate threshold value, determining that the accelerator pedal in the current period is in a slow treading state.
In one possible implementation, the first control module is further configured to:
detecting the treading depth of an accelerator pedal in the current period;
when the accelerator pedal is detected to be in a slow-stepping state in the current period and the first target gear is smaller than the first actual gear, if the stepping depth of the accelerator pedal in the current period is smaller than a preset depth threshold, the gearbox is controlled to keep the first actual gear, and after the delay is carried out for a preset time, the target gear of the gearbox is recalculated and is recorded as the second target gear.
In one possible implementation, the shift control device in the uphill condition further includes:
the second detection module is used for acquiring the gradient of the road surface where the vehicle is located; and if the gradient of the road surface where the vehicle is located is within the preset gradient range, determining that the vehicle is in an uphill working condition.
In a possible implementation manner, the first detection module is specifically configured to:
acquiring the vehicle speed of the current period;
and determining the target gear of the gearbox in the current period according to the vehicle speed in the current period.
In one possible implementation manner, the first control module is specifically configured to:
and sending the first actual gear as a target gear to a gearbox controller so that the gearbox controller controls the gearbox to keep the first actual gear.
In one possible implementation, the gearbox is a rear axle two-speed gearbox.
In a third aspect, the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the steps of the gear shift control method under the uphill condition as described in the first aspect or any one of the possible implementations of the first aspect.
In a fourth aspect, embodiments of the present application provide a vehicle including the electronic device according to the third aspect.
In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored, and the computer program, when executed by a processor, implements the steps of the shift control method under the uphill condition as described in the first aspect or any one of the possible implementations of the first aspect.
The embodiment of the application provides a gear shifting control method and device under an uphill working condition, a vehicle and a storage medium, when the vehicle is in an uphill working condition, if the accelerator pedal in the current period is detected to be in a slow stepping state and the calculated target gear of the gearbox in the current period is smaller than the actual gear of the gearbox in the previous period, controlling the gearbox to keep the first actual gear, recalculating the target gear of the gearbox after delaying for a preset time, recording the target gear as a second target gear, controlling the gearbox to keep the first actual gear and not executing downshift operation if the second target gear is the same as the first actual gear, therefore, the time is preset through time delay, reaction time is provided for the driver to slowly step on the pedal and accelerate speed, the problem that gear shifting control is complex due to frequent gear shifting when the vehicle goes up a slope can be solved, driving experience can be improved, and passengers in the vehicle can feel smooth when the vehicle goes up the slope.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a flowchart of an implementation of a shift control method under an uphill condition according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a shift control device under an uphill condition according to an embodiment of the present application;
fig. 3 is a schematic diagram of an electronic device provided in an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
To make the objects, technical solutions and advantages of the present application more clear, the following description is made by way of specific embodiments with reference to the accompanying drawings.
Referring to fig. 1, a flowchart of an implementation of a gear shifting control method under an uphill condition according to an embodiment of the present application is shown, where an execution subject of the method may be an electronic device, and the electronic device may be a vehicle control unit of a vehicle. The method is detailed as follows:
in S101, when the vehicle is in an uphill working condition, the state of an accelerator pedal in the current period is detected, and the target gear of the gearbox in the current period is calculated and recorded as a first target gear.
In this embodiment, when the vehicle is in an uphill condition, that is, when the vehicle runs on an uphill road, whether the driver wants to keep the vehicle at a speed consistent with that before the uphill is determined by detecting the state of the accelerator pedal in the current period, specifically, whether the driver is in a slow-stepping state, so that the uphill process is relatively smooth, and meanwhile, whether a subsequent gear shifting control strategy is executed is determined by calculating a target gear of the transmission in the current period and comparing the actual gear of the transmission in the subsequent period with that in the previous period.
The target gear of the transmission in the current period refers to a gear which is determined according to the actual state of the vehicle in the current period and is supposed to be located in the transmission. For example, the target gear of the transmission in the current cycle is a target gear of the transmission determined by vehicle running information such as the vehicle speed of the vehicle in the current cycle.
The period may be a sampling period, and the period duration is a short duration, which may be set according to actual requirements.
In this embodiment, the calculated target gear of the transmission in the current period is recorded as a first target gear.
In some embodiments, the "detecting the state of the accelerator pedal in the current period" in S101 may include:
calculating the change rate of the treading depth of the accelerator pedal in the current period;
and if the change rate of the treaded depth of the accelerator pedal in the current period is greater than 0 and smaller than a preset change rate threshold value, determining that the accelerator pedal in the current period is in a slow treading state.
The present embodiment detects the state of the accelerator pedal in the current period mainly by detecting whether the accelerator pedal in the current period is in a slow-stepping state. The slow depression state refers to a state in which the accelerator pedal is depressed slowly.
The rate of change of the depth to which the accelerator pedal is depressed in the current cycle (depth to which the accelerator pedal is depressed in the current cycle-depth to which the accelerator pedal is depressed in the previous cycle)/the length of time of a single cycle. The depth of the accelerator pedal being depressed can be detected by a corresponding sensor.
If the change rate of the treaded depth of the accelerator pedal in the current period is greater than 0, namely positive, the treaded depth of the accelerator pedal is increased, and the change rate is smaller than a preset change rate threshold value, the increase speed of the treaded depth of the accelerator pedal is slow, and the accelerator pedal in the current period is determined to be in a slow treading state; otherwise, determining that the accelerator pedal in the current period is not in a slow stepping state.
The preset change rate threshold may be obtained by calibration according to actual requirements, and is not specifically limited herein.
According to the embodiment, whether the change rate of the treading depth of the accelerator pedal in the current period is larger than 0 and smaller than the preset change rate threshold value or not can be accurately judged, whether the accelerator pedal in the current period is in a slow treading state or not can be accurately judged, so that the intention of a driver can be accurately identified, namely whether the driver wants to enable the vehicle to keep the same speed as the vehicle before uphill or not is judged, and the uphill process is smooth.
If the accelerator pedal in the current period is not in a slow-stepping state, for example, if the change rate of the stepping depth of the accelerator pedal in the current period is not smaller than a preset change rate threshold, it indicates that the driver wants to increase the speed and wants to make the speed ratio of the vehicle higher than the vehicle speed before the vehicle goes up a slope; if the change rate of the depth of the accelerator pedal which is pressed down in the current period is not more than 0, the situation shows that the driver probably does not want to keep the vehicle consistent with the vehicle speed before the uphill slope, and the vehicle can be allowed to gradually decrease along with the uphill slope. In both cases, the subsequent shift control strategy of the present embodiment is not executed.
In some embodiments, the "calculating the target gear of the transmission in the current cycle" in S101 may include:
acquiring the vehicle speed of the current period;
and determining the target gear of the gearbox in the current period according to the vehicle speed in the current period.
In this embodiment, the target gear of the transmission in the current period may be determined by using the existing method according to the vehicle running information such as the vehicle speed in the current period.
In a possible implementation manner, each gear of the gearbox corresponds to a vehicle speed range, the vehicle speed range to which the gear belongs is determined according to the vehicle speed of the current period, and then the target gear of the gearbox of the current period is determined.
According to the embodiment, the target gear of the gearbox is determined according to vehicle running information such as the vehicle speed, so that whether the target gear of the gearbox is consistent with the actual gear can be judged, and whether a follow-up gear shifting control strategy is executed can be judged.
In some embodiments, before S101, the method for controlling a shift in an uphill condition may include:
acquiring the gradient of a road surface where a vehicle is located;
and if the gradient of the road surface where the vehicle is located is within the preset gradient range, determining that the vehicle is in an uphill working condition.
In the embodiment, before S101, it is first detected whether the vehicle is in an uphill condition, and when the vehicle is in the uphill condition, S101 to S104 are not executed, and when the vehicle is not in the uphill condition, S101 to S104 are not executed.
Whether the gradient of the road surface where the vehicle is located is within a preset gradient range or not is monitored, and the situation that the vehicle is located in an uphill working condition is determined. If the gradient of the road surface where the vehicle is located is within a preset gradient range, determining that the vehicle is in an uphill working condition; and if the gradient of the road surface where the vehicle is located is not in the preset gradient range, determining that the vehicle is not in the uphill working condition. The preset gradient range can be obtained by calibrating according to actual requirements. The gradient of the road surface on which the vehicle is located may be detected by a corresponding sensor, or may be calculated by other methods, which is not limited herein.
In S102, the actual gear of the transmission in the previous cycle is obtained and recorded as the first actual gear.
In this embodiment, the actual gear of the transmission in the previous cycle may be obtained by the existing method, and the gear is recorded as the first actual gear.
In S103, if it is detected that the accelerator pedal in the current period is in a slow-stepping state and the first target gear is smaller than the first actual gear, the transmission is controlled to maintain the first actual gear, and after a preset delay time, the target gear of the transmission is recalculated and recorded as the second target gear.
The preset time period may be a time period of several cycles, for example, 2 cycles, 3 cycles, 5 cycles, and the like, and may be set according to actual requirements.
In this embodiment, when it is detected that the state of the accelerator pedal in the current period is a slow-stepping state and the first target gear is smaller than the first actual gear, it is described that the vehicle speed is reduced due to the uphill working condition, so that the target gear is lower than the actual gear, and the driver is stepping on the accelerator pedal slowly to keep the vehicle speed consistent with the vehicle speed before uphill. And after a preset time period, determining the target gear of the gearbox again according to the vehicle speed at the moment, and marking the target gear as a second target gear.
In a possible implementation manner, if it is detected that the accelerator pedal is not in a slow-stepping state in the current period, or the first target gear is not smaller than the first actual gear, the transmission is controlled to be switched to the first target gear.
In some embodiments, before S103, the method for controlling a shift in an uphill condition may further include:
detecting the depth of the accelerator pedal in the current period;
correspondingly, when the accelerator pedal is detected to be in a slow-stepping state in the current period and the first target gear is smaller than the first actual gear, if the stepping depth of the accelerator pedal in the current period is smaller than a preset depth threshold, the gearbox is controlled to keep the first actual gear, and after the delay of a preset time length, the target gear of the gearbox is recalculated and recorded as the second target gear.
In this embodiment, when the vehicle is in an uphill condition, it is required that the accelerator pedal is in a slow-stepping state in the current period, the first target gear is smaller than the first actual gear, and it is also required that the depth of stepping on the accelerator pedal in the current period is smaller than the preset depth threshold, and then the next gear shift control strategy is executed, that is, S103 to S104 are executed.
If the depth of the accelerator pedal being pressed in the current period is not less than the preset depth threshold, it is indicated that the depth of the accelerator pedal being pressed is deeper, that is, the accelerator pedal does not have too much space to be pressed, in this case, even if the accelerator pedal is pressed to the bottom, the vehicle cannot be accelerated to the target gear position which is the first actual gear position, and therefore, the depth of the accelerator pedal being pressed in the current period needs to be limited to be less than the preset depth threshold. The preset depth threshold may be obtained by calibration according to actual requirements, and is not specifically limited herein.
In a possible implementation manner, if it is detected that the depth of the accelerator pedal being stepped on in the current period is not less than a preset depth threshold, or it is detected that the accelerator pedal in the current period is not in a slow-stepping state, or the first target gear is not less than the first actual gear, the transmission is controlled to be switched to the first target gear.
The embodiment ensures the feasibility of the subsequent gear shifting control strategy of the embodiment by increasing a condition that the treading depth of the accelerator pedal in the current period is less than the preset depth threshold.
In some embodiments, controlling the gearbox to maintain the first actual gear may include:
and sending the first actual gear as a target gear to a gearbox controller so that the gearbox controller controls the gearbox to keep the first actual gear.
In this embodiment, the gear of the transmission may be controlled by the transmission controller, and the transmission controller may be enabled to control the transmission to maintain the first actual gear by taking the first actual gear as the target gear and sending the target gear to the transmission controller.
In S104, if the second target gear is the same as the first actual gear, the transmission is controlled to maintain the first actual gear.
If the second target gear is the same as the first actual gear, it is indicated that the vehicle has been accelerated to the calculated target gear which is the same as the first actual gear within the preset time of delay, and at this time, the transmission can be controlled to keep the first actual gear unchanged without downshifting.
In one possible implementation, the gearbox is controlled to switch to the second target gear if the second target gear is different from the first actual gear. That is to say, if the vehicle is not accelerated until the calculated target gear is the same as the first actual gear within the preset time of the delay, it indicates that the driver may not want to accelerate or cannot accelerate until the calculated target gear is the same as the first actual gear, and at this time, the transmission can be directly controlled to be switched to the second target gear, so that the gear of the transmission is kept consistent with the driving information of the vehicle, such as the vehicle speed.
In some embodiments, after S103, the method for controlling a shift in an uphill condition further includes:
and if the second target gear is the same as the first target gear, controlling the gearbox to be switched to the first target gear.
If the second target gear is the same as the first target gear, it is described that within the preset time of delay, although the vehicle is accelerated, the target gear of the transmission is not the same as the first actual gear, and the target gear of the transmission is still the same as the first target gear, at this time, the transmission can be controlled to be switched to the first target gear.
In a possible implementation, if the second target gear is different from both the first target gear and the first actual gear, the transmission is controlled to switch to the second target gear.
In a possible implementation manner, the controlling the transmission to shift to the first target gear includes:
and sending the first target gear to a gearbox controller so that the gearbox controller controls the gearbox to be switched to the first target gear.
In some embodiments, the gearbox is a rear axle two speed gearbox.
The gearbox may be a rear axle two-gear gearbox, for example, with the first actual gear being 2. When the vehicle is in an uphill working condition, if the accelerator pedal is detected to be in a slow stepping state in the current period and the first target gear is 1 gear, the gearbox is controlled to keep 2 gears unchanged, and after the delay preset time length, the target gear of the gearbox is recalculated and recorded as a second target gear. If the second target gear is the gear 2, controlling the gearbox to keep the gear 2 unchanged; and if the second target gear is 1 gear, controlling the gearbox to be switched from 2 gears to 1 gear.
It should be noted that the transmission may be a two-speed transmission or a multi-speed transmission, for example, a three-speed transmission, a four-speed transmission, and the like, and is not particularly limited thereto.
The gear shifting control method under the uphill condition provided by the embodiment can be applied to new energy vehicles and other applicable vehicles, and is not limited specifically here.
In the embodiment, when a vehicle is in an uphill working condition, if the accelerator pedal in the current period is detected to be in a slow stepping state, and the calculated target gear of the gearbox in the current period is smaller than the actual gear of the gearbox in the previous period, the gearbox is controlled to keep the first actual gear, the target gear of the gearbox is recalculated after the delay preset time is long, the target gear is recorded as the second target gear, if the second target gear is the same as the first actual gear, the gearbox is controlled to keep the first actual gear, and the downshift operation is not executed any more, so that the delay preset time is used for providing response time for a driver to increase the speed of slowly stepping on the pedal, the problem that the gear is frequently switched when the vehicle ascends a hill and the gear shift control is complicated can be solved, the gear shift down condition when the vehicle ascends a hill can be avoided, the driving experience is improved, and the driving comfort of the vehicle is improved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
The following are apparatus embodiments of the present application, and for details not described in detail therein, reference may be made to the corresponding method embodiments described above.
Fig. 2 shows a schematic structural diagram of a shift control device in an uphill condition according to an embodiment of the present application, and for convenience of description, only the parts related to the embodiment of the present application are shown, and the details are as follows:
as shown in fig. 2, the shift control device 30 in the uphill condition includes: a first detection module 31, an acquisition module 32, a first control module 33, and a second control module 34.
The first detection module 31 is configured to detect a state of an accelerator pedal in a current period when the vehicle is in an uphill condition, and calculate a target gear of the transmission in the current period, and record the target gear as a first target gear;
the obtaining module 32 is configured to obtain an actual gear of the transmission in a previous cycle, which is recorded as a first actual gear;
the first control module 33 is configured to, if it is detected that the state of the accelerator pedal in the current period is a slow-stepping state and the first target gear is smaller than the first actual gear, control the transmission to maintain the first actual gear, and recalculate the target gear of the transmission after a preset time delay period, which is denoted as a second target gear;
and a second control module 34 for controlling the gearbox to maintain the first actual gear if the second target gear is the same as the first actual gear.
In the embodiment of the application, through the first detection module and the first control module, when the vehicle is in an uphill working condition, if the accelerator pedal in the current period is detected to be in a slow-stepping state, and the calculated target gear of the gearbox in the current period is smaller than the actual gear of the gearbox in the previous period, controlling the gearbox to keep the first actual gear, recalculating the target gear of the gearbox after delaying for a preset time, recording the target gear as a second target gear, and controlling the gearbox to keep the first actual gear and the second actual gear through a second control module, when the second target gear is the same as the first actual gear, the gearbox is controlled to keep the first actual gear, the downshift operation is not executed any more, therefore, the time is preset through time delay, reaction time is provided for the driver to slowly step on the pedal and accelerate speed, the problem that gear shifting control is complex due to frequent gear shifting when the vehicle goes up a slope can be solved, driving experience can be improved, and passengers in the vehicle can feel smooth when the vehicle goes up the slope.
In one possible implementation, the gear shifting control device under the uphill condition further comprises a third control module.
And the third control module is used for controlling the gearbox to be switched to the first target gear if the second target gear is the same as the first target gear.
In a possible implementation manner, the first detection module 31 is specifically configured to:
calculating the change rate of the treading depth of the accelerator pedal in the current period;
and if the change rate of the treaded depth of the accelerator pedal in the current period is greater than 0 and smaller than a preset change rate threshold value, determining that the accelerator pedal in the current period is in a slow treading state.
In one possible implementation, the first control module 33 is further configured to:
detecting the depth of the accelerator pedal in the current period;
when the accelerator pedal is detected to be in a slow-stepping state in the current period and the first target gear is smaller than the first actual gear, if the stepping depth of the accelerator pedal in the current period is smaller than a preset depth threshold, the gearbox is controlled to keep the first actual gear, and after the delay is carried out for a preset time, the target gear of the gearbox is recalculated and is recorded as the second target gear.
In one possible implementation manner, the gear shifting control device under the uphill working condition further comprises a second detection module.
The second detection module is used for acquiring the gradient of the road surface where the vehicle is located; and if the gradient of the road surface where the vehicle is located is within the preset gradient range, determining that the vehicle is in an uphill working condition.
In a possible implementation manner, the first detection module 31 is specifically configured to:
acquiring the vehicle speed of the current period;
and determining the target gear of the gearbox in the current period according to the vehicle speed in the current period.
In one possible implementation, the first control module 33 is specifically configured to:
and sending the first actual gear as a target gear to a gearbox controller so that the gearbox controller controls the gearbox to maintain the first actual gear.
In one possible implementation, the gearbox is a rear axle two-speed gearbox.
The present application further provides a computer program product having a program code, which when executed in a corresponding processor, controller, computing device or electronic device performs the steps in any of the above described embodiments of the shift control method in uphill conditions, such as S101 to S104 shown in fig. 1. Those skilled in the art will appreciate that the methods presented in the embodiments of the present application and the apparatus pertaining thereto may be implemented in various forms of hardware, software, firmware, special purpose processors, or a combination thereof. The special-purpose processor may include an Application Specific Integrated Circuit (ASIC), a Reduced Instruction Set Computer (RISC), and/or a Field Programmable Gate Array (FPGA). The proposed method and apparatus are preferably implemented as a combination of hardware and software. The software is preferably installed as an application program on the program storage device. It is typically a machine based computer platform having hardware such as one or more Central Processing Units (CPU), a Random Access Memory (RAM), and one or more input/output (I/O) interfaces. An operating system is also typically installed on the computer platform. The various processes and functions described herein may either be part of an application program or part may be performed by an operating system.
Fig. 3 is a schematic view of an electronic device provided in an embodiment of the present application. As shown in fig. 3, the electronic apparatus 4 of this embodiment includes: a processor 40, a memory 41 and a computer program 42 stored in said memory 41 and executable on said processor 40. The processor 40, when executing the computer program 42, implements the steps in the above-described embodiments of the shift control method in various uphill conditions, such as S101 to S104 shown in fig. 1. Alternatively, the processor 40, when executing the computer program 42, implements the functions of the modules/units in the above-mentioned device embodiments, such as the modules/units 31 to 34 shown in fig. 2.
Illustratively, the computer program 42 may be partitioned into one or more modules/units, which are stored in the memory 41 and executed by the processor 40 to implement the scheme provided herein. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 42 in the electronic device 4. For example, the computer program 42 may be divided into the modules/units 31 to 34 shown in fig. 2.
The electronic device 4 may be a vehicle control unit or the like. The electronic device 4 may include, but is not limited to, a processor 40, a memory 41. Those skilled in the art will appreciate that fig. 3 is merely an example of an electronic device 4, and does not constitute a limitation of electronic device 4, and may include more or fewer components than shown, or some of the components may be combined, or different components, e.g., the electronic device may also include input-output devices, network access devices, buses, etc.
The Processor 40 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 41 may be an internal storage unit of the electronic device 4, such as a hard disk or a memory of the electronic device 4. The memory 41 may also be an external storage device of the electronic device 4, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the electronic device 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the electronic device 4. The memory 41 is used for storing the computer program and other programs and data required by the electronic device. The memory 41 may also be used to temporarily store data that has been output or is to be output.
Corresponding to the electronic equipment, the embodiment of the application also provides a vehicle which comprises the electronic equipment and has the same beneficial effects as the electronic equipment.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/electronic device and method may be implemented in other ways. For example, the above-described apparatus/electronic device embodiments are merely illustrative, and for example, the division of the modules or units is only one type of logical function division, and other division manners may exist in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method of the embodiments described above can be realized by the present application, and the method can also be completed by instructing relevant hardware through a computer program, where the computer program can be stored in a computer readable storage medium, and when the computer program is executed by a processor, the steps of the embodiments of the shift control method under various uphill conditions described above can be realized. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
Furthermore, features of the embodiments shown in the drawings of the present application or of the various embodiments mentioned in the present description are not necessarily to be understood as embodiments independent of each other. Rather, each feature described in one example of one embodiment can be combined with one or more other desired features from other embodiments to yield yet further embodiments, which are not described in text or with reference to the accompanying drawings.
The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present application, and they should be construed as being included in the present application.
Claims (11)
1. A gear shifting control method under an uphill working condition is characterized by comprising the following steps:
when the vehicle is in an uphill working condition, detecting the state of an accelerator pedal in the current period, and calculating a target gear of a gearbox in the current period, and recording the target gear as a first target gear;
acquiring an actual gear of a gearbox in the previous period, and recording the actual gear as a first actual gear;
if the state of the accelerator pedal in the current period is detected to be a slow stepping state, and the first target gear is smaller than the first actual gear, controlling the gearbox to keep the first actual gear, and after delaying for a preset time length, recalculating the target gear of the gearbox, and recording the target gear as a second target gear;
and if the second target gear is the same as the first actual gear, controlling the gearbox to keep the first actual gear.
2. The method for controlling shifting under an uphill condition according to claim 1, wherein after the delaying for a preset time period and recalculating the target gear of the transmission, which is denoted as the second target gear, the method for controlling shifting under an uphill condition further comprises:
and if the second target gear is the same as the first target gear, controlling the gearbox to be switched to the first target gear.
3. The method of claim 1, wherein detecting the state of the accelerator pedal for the current cycle comprises:
calculating the change rate of the depth of the accelerator pedal in the current period;
and if the change rate of the treaded depth of the accelerator pedal in the current period is greater than 0 and smaller than a preset change rate threshold value, determining that the accelerator pedal in the current period is in a slow treading state.
4. The method according to claim 1, wherein if it is detected that the accelerator pedal is in a slow-stepping state in the current period and the first target gear is smaller than the first actual gear, the transmission is controlled to maintain the first actual gear, and after a preset delay time, the target gear of the transmission is recalculated and is recorded as the second target gear, and the method further comprises:
detecting the depth of the accelerator pedal in the current period;
correspondingly, when the accelerator pedal in the current period is detected to be in a slow-stepping state and the first target gear is smaller than the first actual gear, if the stepping depth of the accelerator pedal in the current period is smaller than a preset depth threshold, the gearbox is controlled to keep the first actual gear, and after the delay of preset time, the target gear of the gearbox is recalculated and recorded as a second target gear.
5. The method according to claim 1, wherein before detecting whether the accelerator pedal is in a slow-stepping state in the current period and calculating the target gear of the transmission in the current period as the first target gear when the vehicle is in the uphill condition, the method further comprises:
acquiring the gradient of a road surface where a vehicle is located;
and if the gradient of the road surface where the vehicle is located is within the preset gradient range, determining that the vehicle is in an uphill working condition.
6. The method for controlling shifting under an uphill condition according to claim 1, wherein the calculating the target gear of the transmission in the current period comprises:
acquiring the vehicle speed of the current period;
and determining the target gear of the gearbox in the current period according to the vehicle speed in the current period.
7. The method of claim 1, wherein controlling the transmission to maintain the first actual gear comprises:
and sending the first actual gear as a target gear to a gearbox controller so that the gearbox controller controls the gearbox to maintain the first actual gear.
8. The method of any one of claims 1 to 7, wherein the gearbox is a rear axle two-speed gearbox.
9. A shift control device under an uphill condition, comprising:
the first detection module is used for detecting the state of an accelerator pedal in the current period when the vehicle is in an uphill working condition, calculating the target gear of the gearbox in the current period and recording the target gear as a first target gear;
the acquisition module is used for acquiring the actual gear of the gearbox in the previous period and recording the actual gear as a first actual gear;
the first control module is used for controlling the gearbox to keep the first actual gear if the state of the accelerator pedal in the current period is detected to be a slow stepping state and the first target gear is smaller than the first actual gear, and recalculating the target gear of the gearbox after delaying for a preset time period and recording the target gear as a second target gear;
and the second control module is used for controlling the gearbox to keep the first actual gear if the second target gear is the same as the first actual gear.
10. A vehicle comprising electronic equipment including a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor when executing the computer program implements the steps of the gear shift control method in an uphill condition as claimed in any one of claims 1 to 8 above.
11. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of a gear shift control method in uphill conditions according to any one of the claims 1 to 8 above.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210018312.XA CN115111360B (en) | 2022-01-07 | 2022-01-07 | Gear shifting control method and device under uphill working condition, vehicle and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210018312.XA CN115111360B (en) | 2022-01-07 | 2022-01-07 | Gear shifting control method and device under uphill working condition, vehicle and storage medium |
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| CN115111360A true CN115111360A (en) | 2022-09-27 |
| CN115111360B CN115111360B (en) | 2023-06-23 |
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| JPH08152062A (en) * | 1994-11-29 | 1996-06-11 | Unisia Jecs Corp | Shift control device for automatic transmission |
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| JPH08152062A (en) * | 1994-11-29 | 1996-06-11 | Unisia Jecs Corp | Shift control device for automatic transmission |
| JPH1096468A (en) * | 1996-09-21 | 1998-04-14 | Mazda Motor Corp | Control device for automatic transmission |
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| CN115111360B (en) | 2023-06-23 |
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