A control method and device of an AMT gearbox, an electronic device and a storage medium

By acquiring the speed difference between the vehicle and the wheel, and setting a preset threshold to control the AMT transmission gears, the problem of the inability to actively respond when the vehicle slips is solved, thus improving vehicle safety and driving comfort.

CN115899240BActive Publication Date: 2026-07-10WEICHAI POWER CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WEICHAI POWER CO LTD
Filing Date
2022-11-14
Publication Date
2026-07-10

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Abstract

The embodiment of the application provides a control method of an AMT gearbox, comprising: acquiring a vehicle speed and a wheel speed; calculating a speed difference between the wheel speed and the vehicle speed; comparing the speed difference with a first preset threshold; and if the speed difference is greater than the first preset threshold, prohibiting the gearbox from increasing a gear. The method can accurately identify the skidding state of the vehicle, and take emergency actions according to the skidding state of the vehicle, so as to ensure that the tire does not continue to skid or sink and has enough torque to help the vehicle stop skidding, effectively improving the safety and comfort of the vehicle driving, and solving the problem that the vehicle cannot take emergency measures when skidding or skidding is serious and the vehicle is trapped, and only the reaction of the driver cannot well and timely escape or stop skidding.
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Description

Technical Field

[0001] This application relates to the field of vehicle technology, and specifically to a control method, device, electronic equipment, and storage medium for an AMT transmission. Background Technology

[0002] In recent years, with social development and improved living standards, people have increasingly higher requirements for car driving safety and overall driving comfort. However, most vehicles still have some safety issues and problems that reduce driving comfort.

[0003] Most vehicles, due to varying road conditions, may encounter skidding or even becoming stuck while driving. Once skidding, sideslipping, or wheel entrapment occurs, the vehicle may be unable to continue driving, or even face serious safety issues. To quickly extricate the vehicle or stop skidding and minimize safety problems, a rapid emergency response is required when a vehicle skids, sideslips, or becomes stuck. However, current technology does not allow for proactive emergency measures when a vehicle skids or becomes severely stuck; the driver's reaction alone is insufficient to effectively extricate the vehicle or stop the skidding in a timely manner.

[0004] Therefore, it is urgent to solve the problem that when a vehicle becomes stuck due to skidding or severe skidding, it cannot take proactive emergency measures, and relying solely on the driver's reaction is not enough to extricate the vehicle from the predicament or stop the skidding in a timely manner. Summary of the Invention

[0005] This application provides a control method for an AMT transmission to solve the problem in the prior art that when a vehicle is stuck due to slippage or severe slippage, it cannot take proactive emergency measures, and the driver's reaction alone is not enough to get out of trouble or stop slippage in a timely manner.

[0006] According to one aspect of this application, a control method for an AMT transmission is provided, comprising: acquiring a vehicle speed and wheel speed; calculating a speed difference between the wheel speed and the vehicle speed; comparing the speed difference with a first preset threshold; and if the speed difference is greater than the first preset threshold, prohibiting the transmission from shifting to a higher gear.

[0007] As an optional implementation, the control method further includes: real-time monitoring of the vehicle speed and the wheel speed, calculating the speed difference between the wheel speed and the vehicle speed; if the speed difference is greater than the first preset threshold when the duration of prohibiting the transmission from shifting to a higher gear reaches the first duration, then the transmission gear is downshifted.

[0008] As an optional implementation, the control method further includes: if the speed difference is greater than a second preset threshold, downshifting the transmission gear.

[0009] As an optional implementation, the second preset threshold is greater than the first preset threshold.

[0010] As an optional implementation, the control method further includes: if the speed difference is greater than the second preset threshold when the duration of downshifting the current gear of the transmission reaches the second duration, then downshifting the transmission gear again until the speed difference is less than the second preset threshold when the duration of downshifting the current gear of the transmission reaches the second duration.

[0011] As an optional implementation, if the speed difference is less than the second preset threshold and greater than the first preset threshold when the duration of reducing the current gear of the transmission reaches the third duration, the transmission gear is reduced again until the duration of reducing the current gear of the transmission reaches the third duration and the speed difference is less than the first preset threshold.

[0012] As an optional implementation, if the vehicle speed is 0, the transmission gear is downshifted to 1st gear.

[0013] According to another aspect of this application, a control device for an AMT transmission is provided, comprising: a speed acquisition module for acquiring vehicle speed and wheel speed; a calculation module for calculating the speed difference between the wheel speed and the vehicle speed; a comparison module for comparing the speed difference with a first preset threshold; and an action module for prohibiting the transmission from shifting to a higher gear if the speed difference is greater than the first preset threshold.

[0014] According to another aspect of this application, an electronic device is provided, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus, the memory is used to store a computer program, and the processor is used to execute the control method steps of the AMT transmission by running the computer program stored in the memory.

[0015] According to another aspect of this application, a computer-readable storage medium is provided, wherein a computer program is stored therein, wherein the computer program is configured to execute the control method steps of the AMT transmission when it is run.

[0016] Due to the adoption of the above technical solution, the beneficial effects achieved by this invention are as follows:

[0017] 1. This invention provides a control method for an AMT (Automated Manual Transmission) gearbox. The method includes acquiring the vehicle speed and wheel speed, and calculating the speed difference between the wheel speed and the vehicle speed. It is easily understood that when a wheel slips, the wheel speed is greater than the vehicle speed. The speed difference is then compared with a first preset threshold. If the speed difference is greater than the first preset threshold, the transmission is prohibited from shifting to a higher gear. When the speed difference is greater than the first preset threshold, it is considered that the vehicle tires are slipping, and the slippage is not severe. Therefore, the transmission is prohibited from shifting to a higher gear. The setting of the first preset threshold allows the vehicle to accurately identify the slippage state and take emergency actions based on it. That is, when the speed difference is greater than the first preset threshold, the transmission is prohibited from shifting to a higher gear to ensure that the tires no longer slip or sink, and that there is sufficient torque to help the vehicle stop slipping, effectively improving vehicle driving safety and overall driving comfort.

[0018] 2. As an optional implementation method, the control method further includes: if the speed difference is greater than a second preset threshold, then downshifting the transmission gear. When the speed difference is greater than the second preset threshold, it can be considered that the vehicle tires are in a state of severe slippage. At this time, the transmission gear is directly downshifted to ensure that the tires have greater torque to help the vehicle stop slipping. This method can further help the vehicle get out of trouble as soon as possible, and further improve the vehicle's safety and driving comfort.

[0019] 3. As an optional implementation, after determining that the vehicle is in a skidding state and taking emergency actions but the vehicle is still skidding, a first duration, a second duration, and a third duration can be set. These durations allow for subsequent extrication actions with different standards than the emergency actions, depending on different road conditions and degrees of skidding. This method ensures that the vehicle can extricate itself from skidding situations through extrication actions, further improving driving comfort. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic flowchart of an optional AMT transmission control method according to an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of a control device for an AMT transmission according to an embodiment of this application;

[0024] Figure 3 This is a structural block diagram of an optional electronic device according to an embodiment of this application. Detailed Implementation

[0025] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0027] Furthermore, in the description of this invention, it should be understood that the terms "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] According to one aspect of the embodiments of this application, such as Figure 1 As shown, a control method for an AMT transmission is provided, including:

[0031] S201. Obtain the overall vehicle speed and wheel speed;

[0032] S202. Calculate the speed difference between the wheel speed and the vehicle speed;

[0033] S203. Compare the speed difference with a first preset threshold;

[0034] S204. If the speed difference is greater than the first preset threshold, the transmission is prohibited from shifting to a higher gear.

[0035] Specifically, the wheel-side speed described in this application can be considered as the distance traveled by a certain point on the wheel within a certain time. It should be noted that the first preset threshold is greater than 0; when the wheel slips, the wheel-side speed is greater than the vehicle speed. At this time, the speed difference is compared with the first preset threshold; if the speed difference is greater than the first preset threshold, the transmission is prohibited from shifting to a higher gear. When the speed difference is greater than the first preset threshold, it can be considered that the vehicle tires are in a slipping state, and the slippage is not severe. Therefore, the action of prohibiting the transmission from shifting to a higher gear is taken. The setting of the first preset threshold enables the vehicle to accurately identify the vehicle's slipping state and take emergency actions based on the slipping state. That is, when the speed difference is greater than the first preset threshold, the transmission is prohibited from shifting to a higher gear to ensure that the tires no longer continue to slip or sink, and that there is sufficient torque to help the entire vehicle stop slipping, effectively improving the vehicle's driving safety and overall driving comfort.

[0036] It should be noted that this application does not limit the setting of the first preset threshold, which can be set according to different vehicle tires and different road conditions frequently driven by different vehicles. Furthermore, the speed difference mentioned in this solution can be the direct difference between the vehicle wheel speed and the overall vehicle speed, or it can be the relative difference between the abnormal difference and the normal difference between the wheel speed and the overall vehicle speed under slippage conditions. For example, if the overall vehicle speed is 10 km / h and the wheel speed is 15 km / h, and the normal difference within its allowable range is set to be within 2 km / h, then the speed difference can be wheel speed - overall vehicle speed = 5 km / h, or (wheel speed - overall vehicle speed) - normal difference = 3 km / h. This application does not limit this. In addition, prohibiting the transmission from shifting to a higher gear can include locking the current gear, downshifting the current gear, or locking the current gear and downshifting the current gear. This solution does not limit this, and technicians can set it according to the specific value of the first preset threshold, the actual vehicle tire condition, and different road conditions frequently driven by different vehicles.

[0037] As an optional implementation, the control method further includes: real-time monitoring of the vehicle speed and the wheel speed, calculating the speed difference between the wheel speed and the vehicle speed; if the speed difference is greater than the first preset threshold when the duration of prohibiting the transmission from shifting to a higher gear reaches a first duration, then the transmission gear is downshifted.

[0038] Specifically, when the speed difference exceeds the first preset threshold and any one of the following emergency actions is taken: locking the current gear of the transmission, downshifting the current gear of the transmission, or locking the current gear of the transmission and downshifting the current gear of the transmission, the vehicle may still be in a slipping state. Therefore, a first time period is set. After the first time period, if the speed difference is still greater than the first preset threshold, then it is considered that the vehicle slipping situation is relatively serious and the emergency actions taken are insufficient to help the vehicle get out of trouble or stop slipping. At this time, the transmission gear can be downshifted to obtain greater torque to help the vehicle stop slipping or get out of trouble.

[0039] It should be noted that this application does not limit the specific gear value for downshifting. If the speed difference is compared with a first preset threshold and the speed difference is greater than the first preset threshold, the emergency action taken is to downshift. In the step where the speed difference is greater than the first preset threshold when the duration of prohibiting the transmission from shifting to a higher gear reaches a first duration, the specific gear downshifted in the step of downshifting can be the same as the gear downshifted in the above steps, or it can be greater or less than the gear downshifted in the above steps.

[0040] As an optional implementation, the control method further includes: if the speed difference is greater than a second preset threshold, downshifting the transmission gear.

[0041] As an optional implementation, the second preset threshold is greater than the first preset threshold.

[0042] In this embodiment, a second preset threshold is also set, and the second preset threshold is greater than the first preset threshold. It is easy to understand that when the speed difference is greater than the second preset threshold, it indicates that the vehicle slippage is more severe than when the speed difference is greater than the first preset threshold but less than the second preset threshold. In this case, it can be considered that the vehicle is severely slipping when the speed difference is greater than the second preset threshold, and a downshift is directly taken to quickly obtain greater torque to help the vehicle get out of trouble. It should be noted that this application does not limit the specific gear to be downshifted; however, the emergency action taken should be able to obtain greater torque than the emergency action taken when the speed difference is greater than the first preset threshold but less than the second preset threshold, in order to help the vehicle get out of trouble as quickly as possible. For example, if a downshift of one gear is taken when the speed difference is greater than the first preset threshold but less than the second preset threshold, then a downshift of two or three gears can be taken when the speed difference is greater than the second preset threshold.

[0043] As an optional implementation, the control method further includes: if the speed difference is greater than the second preset threshold when the duration of downshifting the current gear of the transmission reaches the second duration, then downshifting the transmission gear again until the speed difference is less than the second preset threshold when the duration of downshifting the current gear of the transmission reaches the second duration.

[0044] As an optional implementation, if the speed difference is less than the second preset threshold and greater than the first preset threshold when the duration of reducing the current gear of the transmission reaches the third duration, the transmission gear is reduced again until the speed difference is less than the first preset threshold when the duration of reducing the current gear of the transmission reaches the third duration.

[0045] Specifically, it's important to understand that after a vehicle slips and an emergency maneuver is taken, the slippage condition doesn't decrease linearly. Therefore, if the vehicle is severely slipping but an emergency maneuver yields little result, subsequent attempts to escape the situation should be handled differently from the initial emergency maneuver—that is, more aggressive maneuvers should be employed. In this embodiment, if the speed difference exceeds the second preset threshold, and downshifting doesn't resolve the issue, a second timeframe is set to assess the vehicle's slippage. If, after the second timeframe, the speed difference still exceeds the second preset threshold, the slippage is considered severe, and the emergency maneuver is insufficient to help the vehicle escape or stop slipping. In this case, the transmission can be downshifted further, perhaps by downshifting more gears at once, such as downshifting by three gears, to obtain greater torque to stop the slippage or help the vehicle escape the situation.

[0046] Furthermore, if the speed difference is less than the second preset threshold and greater than the first preset threshold when the transmission downshifts to the third duration, it can be considered that the vehicle is in a slippery state, but the slippery situation is relatively mild. At this time, the transmission can be downshifted again to continue to help the vehicle get out of trouble or stop the slippery situation. However, a smaller downshift can be taken, such as downshifting by one gear. It is also understood that when the speed difference decreases from greater than the second preset threshold to less than the second preset threshold and greater than the first preset threshold, it indicates that the previous extrication action has achieved a certain effect, and the situation is less severe than before and is no longer in a dangerous state. Therefore, the third duration can be longer than the second duration, and it is also understood that the first duration can also be longer than the second duration. However, it should be noted that this application does not limit the specific relationship between the first duration, the second duration, and the third duration. Those skilled in the art can still set it according to the first preset threshold, the second preset threshold, and the specific vehicle and road conditions.

[0047] As an optional implementation, if the vehicle speed is 0, the transmission gear is downshifted to 1st gear.

[0048] It should be noted that this implementation method can be divided into two cases: First, when obtaining the vehicle speed and wheel speed, if the vehicle speed is 0 and the wheel speed is greater than 0, the transmission gear is directly downshifted to 1st gear. In this case, the vehicle can be considered to be stuck and unable to move. Second, if the speed difference is greater than the second preset threshold and the vehicle speed is 0, the transmission gear is downshifted to 1st gear. In this case, the vehicle can be considered to be slipping very severely and unable to move. This method can quickly obtain a large torque to help the vehicle get out of trouble.

[0049] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM (Read-Only Memory) / RAM (Random Access Memory), magnetic disk, optical disk), and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0050] According to another aspect of the embodiments of this application, a control device for an AMT transmission used to implement the above-described control method for an AMT transmission is also provided. Figure 2 This is a schematic diagram of a control device for an AMT transmission according to an embodiment of this application, as shown below. Figure 2 As shown, the device may include:

[0051] Speed ​​acquisition module 501 is used to acquire the overall vehicle speed and wheel speed;

[0052] Calculation module 502 is used to calculate the speed difference between the wheel speed and the vehicle speed;

[0053] Comparison module 503 is used to compare the speed difference with a first preset threshold.

[0054] Action module 504 is used to lock the current gear of the transmission when the speed difference is greater than the first preset threshold.

[0055] Figure 3 This is a structural block diagram of an optional electronic device according to an embodiment of this application, such as... Figure 3 As shown, it includes a processor 601, a communication interface 602, a memory 603, and a communication bus 604. The processor 601, communication interface 602, and memory 603 communicate with each other via the communication bus 604.

[0056] Memory 603 is used to store computer programs;

[0057] When processor 601 executes a computer program stored in memory 603, it performs the following steps:

[0058] Obtain the overall vehicle speed and wheel speed;

[0059] Calculate the speed difference between the wheel-side speed and the overall vehicle speed;

[0060] Compare the speed difference with a first preset threshold;

[0061] If the speed difference is greater than the first preset threshold, the transmission is prohibited from shifting to a higher gear.

[0062] According to another aspect of the embodiments of this application, an electronic device for implementing the above-described control method for an AMT transmission is also provided. The electronic device may be a server, a terminal, or a combination thereof.

[0063] Optionally, in this embodiment, the communication bus can be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. This communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 3 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0064] The communication interface is used for communication between the aforementioned electronic devices and other devices.

[0065] The memory may include RAM, or non-volatile memory, such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0066] Other module units, including but not limited to those in the control device of the AMT transmission mentioned above, will not be described in detail in this example.

[0067] The processors mentioned above can be general-purpose processors, including but not limited to: CPU (Central Processing Unit), NP (Network Processor), etc.; they can also be DSP (Digital Signal Processor), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0068] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0069] Those skilled in the art will understand that Figure 3 The structure shown is for illustrative purposes only. The device implementing the AMT transmission described above can be a terminal device, such as a smartphone (e.g., Android phone, iOS phone), tablet computer, PDA, mobile internet device (MID), PAD, etc. Figure 3 This does not limit the structure of the aforementioned electronic device. For example, the terminal device may also include components that are more... Figure 3 The more or fewer components shown (such as network interfaces, display devices, etc.), or having the same Figure 3 The different configurations shown.

[0070] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing the hardware related to the terminal device. The program can be stored in a computer-readable storage medium, which may include: flash drive, ROM, RAM, disk or optical disk, etc.

[0071] According to another aspect of the embodiments of this application, a storage medium is also provided. Optionally, in this embodiment, the storage medium can be used to execute program code for an AMT transmission control method.

[0072] Optionally, in this embodiment, the storage medium may be located on at least one of the network devices in the network shown in the above embodiment.

[0073] Optionally, in this embodiment, the storage medium is configured to store program code for performing the following steps:

[0074] Obtain the overall vehicle speed and wheel speed;

[0075] Calculate the speed difference between the wheel-side speed and the overall vehicle speed;

[0076] Compare the speed difference with a first preset threshold;

[0077] If the speed difference is greater than the first preset threshold, the transmission is prohibited from shifting to a higher gear.

[0078] Specific examples in this embodiment can be found in the examples described in the above embodiments, and will not be repeated here.

[0079] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, ROMs, RAMs, portable hard drives, magnetic disks, or optical disks.

[0080] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0081] If the integrated units in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in the aforementioned computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause one or more electronic devices (which may be personal computers, servers, or network devices, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0082] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0083] In the several embodiments provided in this application, it should be understood that the disclosed client can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection between units or modules, and may be electrical or other forms.

[0084] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the solution provided in this embodiment, depending on actual needs.

[0085] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0086] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0087] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A control method for an AMT transmission, characterized in that, include: Obtain the overall vehicle speed and wheel speed; Calculate the speed difference between the wheel-side speed and the overall vehicle speed; Compare the speed difference with a first preset threshold; If the speed difference is greater than the first preset threshold, the transmission is prohibited from shifting to a higher gear. If the speed difference exceeds the first preset threshold when the duration of prohibiting the transmission from shifting to a higher gear reaches a first duration, then the transmission gear is downshifted. If the speed difference is greater than the second preset threshold, the transmission gear is downshifted; The second preset threshold is greater than the first preset threshold; If the speed difference is greater than the second preset threshold when the duration of downshifting the current gear reaches the second duration, the gear will be downshifted again until the duration of downshifting the current gear reaches the second duration and the speed difference is less than the second preset threshold. If the speed difference is less than the second preset threshold but greater than the first preset threshold when the duration of downshifting the current gear reaches the third duration, then the gear is downshifted again until the duration of downshifting the current gear reaches the third duration and the speed difference is less than the first preset threshold.

2. The control method for an AMT transmission as described in claim 1, characterized in that, Also includes: The vehicle speed and the wheel speed are monitored in real time, and the speed difference between the wheel speed and the vehicle speed is calculated.

3. The control method for an AMT transmission as described in claim 1, characterized in that, The control method further includes: If the vehicle speed is 0, downshift the transmission to 1st gear.

4. A control device for an AMT transmission, characterized in that, include: The speed acquisition module is used to acquire the overall vehicle speed and wheel speed. The calculation module is used to calculate the speed difference between the wheel-side speed and the overall vehicle speed; The comparison module is used to compare the speed difference with a first preset threshold. An action module is configured to prevent the transmission from shifting to a higher gear when the speed difference is greater than a first preset threshold. The action module further includes: if the speed difference is greater than the first preset threshold when the duration of preventing the transmission from shifting to a higher gear reaches a first duration, then downshifting the transmission; if the speed difference is greater than a second preset threshold, downshifting the transmission; the second preset threshold is greater than the first preset threshold; if the speed difference is greater than the second preset threshold when the duration of downshifting the transmission reaches a second duration, then downshifting the transmission again until the speed difference is less than the second preset threshold when the duration of downshifting the transmission reaches the second duration; if the speed difference is less than the second preset threshold and greater than the first preset threshold when the duration of downshifting the transmission reaches a third duration, then downshifting the transmission again until the speed difference is less than the first preset threshold when the duration of downshifting the transmission reaches the third duration.

5. An electronic device, comprising a processor, a communication interface, a memory, and a communication bus, wherein, The processor, the communication interface, and the memory communicate with each other via the communication bus, characterized in that... The memory is used to store computer programs; The processor is configured to execute the control method steps of the AMT transmission according to any one of claims 1 to 3 by running the computer program stored in the memory.

6. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, wherein the computer program is configured to execute the control method steps of the AMT transmission as described in any one of claims 1 to 3 when it is run.