An AMT gearbox shift procedure control method, device and equipment

Abstract

The present application belongs to the technical field of automatic gearbox program control, and specifically provides an AMT gearbox shift program control method, device and equipment. The method comprises the following steps: dividing vehicle road conditions into sections according to speed ranges in advance, and creating a gearbox shift program for each vehicle road condition speed section; obtaining road condition speed information during vehicle operation, and determining a vehicle road condition speed section according to the road condition speed information; obtaining a target gearbox shift program corresponding to the determined road condition speed section, and calibrating the gearbox using the target gearbox shift program. The gearbox is calibrated according to the automatic matching of the gearbox program in the speed condition section, thereby adapting to different driver driving habits, automatically controlling the gearbox upshift and downshift points, avoiding the shift caused by different driver driving habits from deviating the economic condition section of the engine operation condition, and improving the economy of the vehicle.

Description

Technical Field

[0001] This invention relates to the field of automatic transmission program control technology, specifically to an AMT transmission shift program control method, device, and equipment. Background Technology

[0002] The transmission is a core component of a normal power control system, and different transmission control programs determine the differences in vehicle power and fuel economy. Typically, tractor trucks are calibrated at the factory with two transmission programs: an economy mode and a power mode, corresponding to a fixed throttle opening for the driver, catering to different drivers' common driving habits. This approach has two shortcomings: first, it doesn't accommodate different driver habits, as different drivers have different needs for transmission shift modes, and it's difficult for drivers to maintain the corresponding throttle opening according to the preset program at different speeds; second, this transmission program only offers two options—economy mode and power mode—and doesn't further refine the economy mode according to different driver habits.

[0003] Traditional economy mode programs place high demands on drivers. When drivers have poor driving habits and their driving deviates significantly from the preset requirements, this single program cannot adapt to such driving behaviors. For example, when the initial economy mode program is set to adapt the throttle to the medium-speed range, if the driver is driving in a high-speed range, the shift points set by the program for the medium-speed range will be too high for high-speed driving because the torque required at high speeds is less than at medium speeds. This results in a low-gear, high-revving, high-torque engine condition. According to the universal characteristic diagram, the shift point for this condition is in the upper left corner, deviating from the engine's economic operating range. Conversely, when the vehicle is driving in a low-gear, low-speed range, the torque required at low speeds is greater than at medium speeds. Therefore, the shift points set by the program for the medium-speed range will be too low for low-gear, low-speed driving because the engine will be in a high-gear, low-revving, low-torque engine condition. According to the universal characteristic diagram, the shift point for this condition is in the lower right corner, deviating from the engine's economic operating range.

[0004] Therefore, using only one economic mode to deal with low-speed, medium-speed, and high-speed road conditions cannot keep the engine in the economic operating range at all times, resulting in poor fuel economy. Summary of the Invention

[0005] To address the problem that existing methods using a single economic mode to handle low-speed, medium-speed, and high-speed road conditions cannot keep the engine in its economic operating range at all times, resulting in poor fuel economy, this invention provides an AMT transmission shift program control method, device, and equipment.

[0006] In a first aspect, the present invention provides an AMT (Automated Manual Transmission) gear shift program control method, comprising the following steps: The road conditions are pre-divided into sections according to vehicle speed range, and a gearbox shifting program is created for each vehicle road condition speed section. The system acquires road condition and speed information during vehicle operation and determines the vehicle's road condition and speed zone based on this information. Obtain the target gearbox shift program corresponding to the defined road conditions and vehicle speed range, and use the target gearbox shift program to calibrate the gearbox.

[0007] As a preferred embodiment of the technical solution of the present invention, the steps of pre-dividing the vehicle road conditions into segments according to the vehicle speed range and creating a transmission shifting program for each vehicle road condition speed segment include: The vehicle's road conditions are pre-classified according to speed range into high-speed zone, medium-speed zone, and low-speed zone; Pre-set high-speed range, medium-speed range, and low-speed range; Create a high-speed zone program for the high-speed zone, a medium-speed zone program for the medium-speed zone, and a low-speed zone program for the low-speed zone.

[0008] As a preferred embodiment of the technical solution of the present invention, the step of pre-setting the high-speed range, the medium-speed range, and the low-speed range includes: The low-speed range is set to [0, M(1+a%)], where a% is the first set ratio; The medium-speed range is set as [M(1+a%), N(1+b%)], where b% is the second set ratio; Define the high-speed range as [N(1+b%), P]; Where M, N, and P are numbers representing vehicle speed, with M being less than N and N being less than P.

[0009] The values ​​of the first set ratio and the second set ratio are selected based on the squared difference of vehicle speed fluctuation; the range of the first set ratio and the second set ratio is [-1, 0].

[0010] As a preferred embodiment of the technical solution of the present invention, the steps of creating a high-speed zone program for the high-speed zone, a medium-speed zone program for the medium-speed zone, and a low-speed zone program for the low-speed zone include: Retrieve the engine speed range during upshifting and downshifting in the vehicle's economy mode, and set it as the adjustment range for the engine speed parameters in the transmission shift program; Create a mid-range speed zone program based on the retrieved transmission shift program in the economic mode, and configure the mid-range speed zone program for use in the mid-range speed zone operating conditions. Based on the medium-speed range program, the engine speed range set for gear shifting is adjusted downwards to form the low-speed range program, and the low-speed range program is configured for use in low-speed operating conditions. Based on the medium-speed range program, the engine speed range set for gear shifting is adjusted upwards to form the high-speed range program, and the high-speed range program is configured for use in high-speed operating conditions.

[0011] As a preferred embodiment of the technical solution of the present invention, the steps of acquiring road condition and vehicle speed information during vehicle operation and determining the vehicle's road condition and speed zone based on the road condition and vehicle speed information include: During vehicle operation, sensors collect vehicle speed data and upload the speed data to the CAN bus; The vehicle's MCU determines the vehicle speed H and its corresponding road condition and speed zone based on the gear position. When 0≤H≤M(1+a%), the vehicle is determined to be in a low gear and low speed zone; When M(1+a%) < H < N(1+b%), the vehicle is determined to be in the medium speed range. When N(1+b%)≤H≤P, the vehicle is determined to be in a high-speed zone.

[0012] As a preferred embodiment of the technical solution of the present invention, the steps of obtaining the target transmission shift program corresponding to the determined road condition and vehicle speed zone, and calibrating the transmission using the target transmission shift program include: Step S31: Obtain vehicle road conditions and speed zones; When the vehicle is in a low gear and low speed range, proceed to step S32; When the vehicle is in the medium speed range, proceed to step S33; When the vehicle is in a high gear and high speed zone, proceed to step S34; Step S32: Using the low-gear, low-speed range program as the target transmission program, proceed to step S35; Step S33: Using the medium-speed range program as the target transmission program, proceed to step S35; Step S34: Using the high-gear, high-speed range program as the target transmission program, proceed to step S35; Step S35: Calibrate the transmission using the target transmission program.

[0013] As a preferred embodiment of the technical solution of the present invention, the step of calibrating the transmission using the target transmission program includes: Replace the engine speed during upshifts in the standard program with the engine speed during upshifts in the target transmission program. Replace the engine speed during downshifting in the standard program with the engine speed during downshifting in the target transmission program. Control the engine speed and determine and execute the upshift or downshift of the transmission according to the upshift or downshift speed set by the target transmission program.

[0014] Secondly, the present invention provides an AMT transmission shift program control device, including a transmission program creation module, a vehicle speed and operating condition determination module, and a transmission program calibration module. The transmission program creation module is used to pre-divide vehicle road condition and speed data according to the commonly used throttle opening, and create a transmission program for vehicles with commonly used throttle openings. The vehicle speed and operating condition determination module is used to acquire road condition and vehicle speed information during vehicle operation and determine the vehicle's road condition and vehicle speed zone based on the road condition and vehicle speed information. The transmission program calibration module is used to obtain the target transmission program corresponding to a defined vehicle road condition and speed range, and to calibrate the transmission using the target transmission program.

[0015] As a preferred embodiment of the technical solution of the present invention, the transmission program creation module includes a vehicle speed division unit, a vehicle speed range setting unit, and a transmission program creation unit. The vehicle speed division unit is used to pre-divide the vehicle road conditions into high-speed zone, medium-speed zone, and low-speed zone according to the vehicle speed range. The vehicle speed range setting unit is used to preset the high-speed range, medium-speed range, and low-speed range. The transmission program creation unit is used to create high-speed zone programs for high-speed zones, medium-speed zone programs for medium-speed zones, and low-speed zone programs for low-speed zones.

[0016] As a preferred embodiment of the technical solution of the present invention, the vehicle speed range setting unit is used to set the low-speed range of low gear to [0, M(1+a%)], where a% is a first setting ratio; set the medium-speed range of medium gear to [M(1+a%), N(1+b%)], where b% is a second setting ratio; and set the high-speed range of high gear to [N(1+b%), P]; wherein M, N, and P are numbers representing vehicle speed, M is less than N, and N is less than P.

[0017] The values ​​of the first set ratio and the second set ratio are selected based on the squared difference of vehicle speed fluctuation; the range of the first set ratio and the second set ratio is [-1, 0].

[0018] As a preferred embodiment of the technical solution of the present invention, the transmission program creation unit is specifically used to retrieve the engine speed range during upshifting and downshifting in the vehicle's economy mode, and set it as the adjustment range of the engine speed parameters in the transmission shift program; create a mid-range speed zone program based on the retrieved transmission shift program in the economy mode, and configure the mid-range speed zone program for use in the mid-range speed zone operating condition; based on the mid-range speed zone program, adjust the engine speed range set for upshifting and downshifting in the transmission to form a low-range speed zone program, and configure the low-range speed zone program for use in the low-range speed operating condition; based on the mid-range speed zone program, adjust the engine speed range set for upshifting and downshifting in the transmission to form a high-range speed zone program, and configure the high-range speed zone program for use in the high-range speed operating condition.

[0019] As a preferred embodiment of the technical solution of the present invention, the vehicle speed condition determination module is specifically used to collect vehicle speed data by sensors during vehicle operation and upload the vehicle speed data to the CAN bus; the vehicle electronic control unit (MCU) determines the vehicle speed zone to which the vehicle speed H belongs based on the gear position; when 0≤H≤M(1+a%), it is determined that the vehicle is in the low gear low speed zone; when M(1+a%)<H<N(1+b%), it is determined that the vehicle is in the medium gear medium speed zone; when N(1+b%)≤H≤P, it is determined that the vehicle is in the high gear high speed zone.

[0020] As a preferred embodiment of the technical solution of the present invention, the transmission program calibration module is used to replace the engine speed during upshifting in the standard program with the engine speed during upshifting in each gear of the transmission in the target transmission program; replace the engine speed during downshifting in the standard program with the engine speed during downshifting in each gear of the transmission in the target transmission program; control the engine speed, and determine and execute the upshifting or downshifting of the transmission according to the upshifting or downshifting speed set by the target transmission program.

[0021] Thirdly, the present invention provides an electronic device comprising: at least one processor; and a memory communicatively connected to the at least one processor; the memory storing computer program instructions executable by the at least one processor, the computer program instructions being executed by the at least one processor to enable the at least one processor to execute the AMT transmission shift program control method as described in the first aspect.

[0022] As can be seen from the above technical solutions, the present invention has the following advantages: the economic mode transmission program is pre-set for different vehicle speed conditions, and the transmission program is automatically matched and calibrated according to the vehicle speed condition range, thereby adapting to different driver driving habits and automatically controlling the transmission upshift and downshift points, avoiding the engine operating condition from deviating from the economic condition range due to gear changes caused by different driver driving habits, thus improving the overall vehicle economy.

[0023] Furthermore, the design principle of this invention is reliable, the structure is simple, and it has a very wide range of application prospects.

[0024] Therefore, it is evident that the present invention has outstanding substantive features and significant progress compared with the prior art, and the beneficial effects of its implementation are also obvious. Attached Figure Description

[0025] 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.

[0026] Figure 1 This is a schematic flowchart of a method according to an embodiment of the present invention.

[0027] Figure 2 This is a flowchart illustrating the process of creating a gear shifting program in an embodiment of the present invention.

[0028] Figure 3 This is a flowchart illustrating the process of determining the target gearbox shifting procedure in the method of this embodiment of the invention.

[0029] Figure 4 This is a schematic diagram of the calibration process in an embodiment of the present invention.

[0030] Figure 5 This is a schematic block diagram of an apparatus according to an embodiment of the present invention. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0032] like Figure 1 As shown, the present invention provides an AMT transmission shift program control method to solve the technical problem of fuel economy differences caused by different accelerator pedal habits of different drivers in the same operating scenario when vehicles travel the same route; the method includes the following steps: S1: Pre-divide the vehicle road conditions into segments according to the vehicle speed range, and create a gearbox shifting program for each vehicle road condition speed segment; S2: Acquire road condition and vehicle speed information during vehicle operation, and determine the vehicle's road condition and vehicle speed zone based on the road condition and vehicle speed information; S3: Obtain the target transmission shift program corresponding to the determined road condition and vehicle speed range, and use the target transmission shift program to calibrate the transmission.

[0033] In some embodiments, step S1, which involves pre-dividing the vehicle road conditions into segments according to vehicle speed ranges and creating a transmission shifting program for each vehicle road condition speed segment, includes: S11: Pre-classify vehicle road conditions into high-speed zone, medium-speed zone, and low-speed zone according to vehicle speed range; S12: Pre-set high-speed range, medium-speed range, and low-speed range; S13: Creates a high-speed zone program for high-speed zones, a medium-speed zone program for medium-speed zones, and a low-speed zone program for low-speed zones.

[0034] It should be noted that the steps for pre-setting the high-speed range, medium-speed range, and low-speed range include: The low-speed range is set to [0, M(1+a%)], where a% is the first set ratio; The medium-speed range is set as [M(1+a%), N(1+b%)], where b% is the second set ratio; Define the high-speed range as [N(1+b%), P]; Where M, N, and P are numerical values ​​representing vehicle speed, with M less than N and N less than P. Specifically: the low-speed range for low gear is set to [0, 30(1+a%)], where a% is the first set ratio; the high-speed range for high gear is set to [60(1+b%), 90], where b% is the second set ratio; and the medium-speed range for medium gear is set to [30(1+a%), 60(1+b%)]. The values ​​of the first and second set ratios are related to the squared difference of vehicle speed fluctuation. When the squared difference for low gear low speed is less than or equal to 30, and the squared difference for medium gear medium speed is less than or equal to 60, the first and second set ratios take their maximum values, and the range of the first and second set ratios is [-1, 0]. For example, a% can be -15%, and b% can be -20%.

[0035] In some embodiments, such as Figure 2 As shown, step S13, which involves creating a high-speed zone program for the high-speed zone, a medium-speed zone program for the medium-speed zone, and a low-speed zone program for the low-speed zone, includes the following steps: S131: Retrieves the engine speed range during upshifting and downshifting in the vehicle's economy mode and sets it as the adjustment range for the engine speed parameters in the transmission shift program. S132: Create a mid-range speed zone program based on the retrieved transmission shift program in the economy mode, and configure the mid-range speed zone program for use in the mid-range speed zone operating condition; S133: Based on the medium-speed range program, the engine speed range set by the transmission shifts down is adjusted to form the low-speed range program, and the low-speed range program is configured for use in low-speed operating conditions. S134: Based on the medium-speed range program, the high-speed range program is formed by adjusting the engine speed range set in the gearbox upshifting and downshifting settings. The high-speed range program is configured for use in high-speed operating conditions.

[0036] Specifically: The engine speed range during upshifts and downshifts in the vehicle's economy mode is retrieved and set as the adjustment range for the engine speed parameters in the transmission shift program. For example, the upshift speed for 7th gear is 1400 rpm, and the downshift speed for 8th gear is 950 rpm. A mid-range speed zone program is created based on the retrieved transmission shift program in economy mode and configured for use in the mid-range speed zone. Using the mid-range speed zone program as a base, the engine speed range set for upshifts and downshifts is adjusted downwards, with the upshift speed for 7th gear at 1350 rpm and the downshift speed for 8th gear at 900 rpm, forming a high-speed program, and configured for use in the high-speed zone. Finally, using the mid-range speed zone as a base, the engine speed range set for upshifts and downshifts is adjusted upwards, with the upshift speed for 7th gear at 1450 rpm and the downshift speed for 8th gear at 1000 rpm, forming a low-speed zone program, and configured for use in the low-speed zone.

[0037] In some embodiments, step S2, which involves acquiring road condition and vehicle speed information during vehicle operation and determining the vehicle's road condition and speed zone based on the road condition and vehicle speed information, includes: S21: During vehicle operation, sensors collect vehicle speed data and upload the vehicle speed data to the CAN bus; S22: Determine the vehicle speed zone based on road conditions and gear position for vehicle speed H; When 0≤H≤30(1+a%), the vehicle is determined to be in the low gear, low speed zone; when 30(1+a%)<H<60(1+b%), the vehicle is determined to be in the medium gear, medium speed zone; when 60(1+b%)≤H≤90, the vehicle is determined to be in the high gear, high speed zone.

[0038] Taking a% as -15% and b% as -20% as examples, when the vehicle speed H fluctuates by -15% between 0-30km / h, H belongs to the low gear, low speed zone; when the vehicle speed H fluctuates by -15% above 30km / h and by -20% above 60km / h, H belongs to the medium gear, medium speed zone; when the vehicle speed H fluctuates by -20% above 60km / h and by -20% above 90km / h, H belongs to the high gear, high speed zone.

[0039] For example, when a 6×4 tractor is traveling between Handan City, Hebei Province and Rizhao City, Shandong Province, the following settings are made based on the route characteristics: a% is set to -15% and b% to -20%; when the operating speed H is in the range of [0, 22.5], the vehicle speed corresponds to the low speed zone; when the vehicle speed H is in the range of (22.5, 48), the vehicle speed corresponds to the medium speed zone; and when the vehicle speed H is in the range of [48, 90], the vehicle speed corresponds to the high speed zone.

[0040] In some embodiments, such as Figure 3 As shown, in step S3, the steps of obtaining the target transmission shift program corresponding to the determined road condition and vehicle speed zone, and calibrating the transmission using the target transmission shift program include: Step S31: Obtain vehicle road conditions and speed zones; When the vehicle is in a low gear and low speed range, proceed to step S32; When the vehicle is in the medium speed range, proceed to step S33; When the vehicle is in a high gear and high speed zone, proceed to step S34; Step S32: Using the low-gear, low-speed range program as the target transmission program, proceed to step S35; Step S33: Using the medium-speed range program as the target transmission program, proceed to step S35; Step S34: Using the high-gear, high-speed range program as the target transmission program, proceed to step S35; Step S35: Calibrate the transmission using the target transmission program.

[0041] It should be further explained that, such as Figure 4 As shown, step 35, the step of calibrating the transmission using the target transmission program, includes: S351: Replace the engine speed during upshifts in the standard program with the engine speed during upshifts in each gear of the target transmission program. S352: Replaces the engine speed during downshifting in the standard program with the engine speed during downshifting in each gear of the target transmission program. S353: Controls engine speed, determines and executes upshifts or downshifts based on the upshift or downshift speed set by the target transmission program.

[0042] For example, in a 6×4 tractor-trailer traveling from Handan, Hebei Province to Rizhao, Shandong Province, when drivers A and B are driving the same vehicle, the ECU calculates the throttle inputs used by both drivers and adjusts the vehicle speed and gear to derive the corresponding speed-condition program. When the vehicle speed is 0-30 / 22.5 km / h (based on throttle adjustments by both drivers), the ECU determines that it is in a low-gear, low-speed range and calibrates the corresponding low-gear, low-speed transmission program. When the vehicle speed is 30 / 22.5-60 / 48 km / h (based on throttle adjustments by both drivers), the ECU... The system determines that the vehicle is in the mid-range, mid-speed zone and calibrates the corresponding mid-range, mid-speed transmission program. When the vehicle travels at speeds of 60 / 48-60 / 90 km / h (based on throttle adjustments by both drivers), the ECU determines that it is in the high-range, high-speed zone and calibrates the corresponding high-range, high-speed transmission program. In this embodiment, the average fuel consumption of the vehicle was 36.20 L / 100 km when the transmission program was initially set to economy mode. After switching the control logic of this invention, the average fuel consumption decreased to 34.04 L / 100 km, thus improving fuel economy.

[0043] like Figure 5 As shown, this embodiment of the invention provides an AMT transmission shift program control device, including a transmission program creation module, a vehicle speed and operating condition determination module, and a transmission program calibration module; The transmission program creation module is used to pre-divide vehicle road condition and speed data according to the commonly used throttle opening, and create a transmission program for vehicles with commonly used throttle openings. The vehicle speed and operating condition determination module is used to acquire road condition and vehicle speed information during vehicle operation and determine the vehicle's road condition and vehicle speed zone based on the road condition and vehicle speed information. The transmission program calibration module is used to obtain the target transmission program corresponding to a defined vehicle road condition and speed range, and to calibrate the transmission using the target transmission program.

[0044] In some embodiments, the transmission program creation module includes a vehicle speed division unit, a vehicle speed range setting unit, and a transmission program creation unit. The vehicle speed division unit is used to pre-divide the vehicle road conditions into high-speed zone, medium-speed zone, and low-speed zone according to the vehicle speed range. The vehicle speed range setting unit is used to preset the high-speed range, medium-speed range, and low-speed range. The transmission program creation unit is used to create high-speed zone programs for high-speed zones, medium-speed zone programs for medium-speed zones, and low-speed zone programs for low-speed zones.

[0045] In some embodiments, the vehicle speed range setting unit is used to set the low-speed range of low gear to [0, M(1+a%)], where a% is a first setting ratio; set the medium-speed range of medium gear to [M(1+a%), N(1+b%)], where b% is a second setting ratio; and set the high-speed range of high gear to [N(1+b%), P]; where M, N, and P are numbers representing vehicle speed, M is less than N, and N is less than P.

[0046] The values ​​of the first set ratio and the second set ratio are selected based on the squared difference of vehicle speed fluctuation; the range of the first set ratio and the second set ratio is [-1, 0].

[0047] In some embodiments, the transmission program creation unit is specifically used to retrieve the engine speed range during upshifting and downshifting in the vehicle's economy mode, and set it as the adjustment range of the engine speed parameters in the transmission shift program; create a mid-range speed zone program based on the retrieved transmission shift program in economy mode, and configure the mid-range speed zone program for use in mid-range speed zone operating conditions; based on the mid-range speed zone program, adjust the engine speed range set for upshifting and downshifting in the transmission to form a low-range speed zone program, and configure the low-range speed zone program for use in low-range speed operating conditions; based on the mid-range speed zone program, adjust the engine speed range set for upshifting and downshifting in the transmission to form a high-range speed zone program, and configure the high-range speed zone program for use in high-range speed operating conditions.

[0048] In some embodiments, the vehicle speed and operating condition determination module includes a road condition and speed determination unit, a low-speed zone determination unit, a medium-speed zone determination unit, and a high-speed zone determination unit. The road condition and vehicle speed determination unit is used to collect vehicle speed data by sensors during vehicle operation and upload the vehicle speed data to the CAN bus; The low-speed zone determination unit is used to determine the vehicle speed zone of the vehicle based on the gear. When 0≤H≤M(1+a%), the vehicle is determined to be in a low-speed zone. The medium-speed zone determination unit is used to determine the vehicle speed zone of the vehicle based on the gear. When M(1+a%) < H < N(1+b%), the vehicle is determined to be in the medium-speed zone. The high-speed zone determination unit is used to determine the vehicle speed zone based on the gear position and the road condition speed zone of the vehicle. When N(1+b%)≤H≤P, the vehicle is determined to be in the high-speed zone.

[0049] In some embodiments, the transmission program calibration module includes a working condition vehicle speed and gear acquisition unit, a first target transmission program setting unit, a second target transmission program setting unit, a third target transmission program setting unit, and a transmission program calibration unit. The vehicle speed and gear acquisition unit is used to acquire the vehicle speed zone under road conditions. The first target transmission program setting unit is used to set the low gear low speed range program as the target transmission program when the vehicle is in a low gear low speed range. The second target transmission program setting unit is used to set the mid-range speed range program as the target transmission program when the vehicle is in the mid-range speed range. The third target transmission program setting unit is used to set the high gear high speed range program as the target transmission program when the vehicle is in a high gear high speed range. The transmission program calibration unit is used to calibrate the transmission using the target transmission program; specifically, it is used to replace the engine speed during upshifts in the standard program with the engine speed during upshifts in each gear of the transmission in the target transmission program; it is used to replace the engine speed during downshifts in the standard program with the engine speed during downshifts in each gear of the transmission in the target transmission program; it controls the engine speed and determines and executes the transmission's upshifts or downshifts based on the upshift or downshift speeds set in the target transmission program.

[0050] This invention also provides an electronic device, comprising: a processor, a communication interface, a memory, and a communication bus, wherein the processor, communication interface, and memory communicate with each other via the communication bus. The communication bus can be used for information transmission between the electronic device and sensors. The processor can call logical instructions in the memory to execute the following method: S1: Pre-divide the vehicle road conditions into segments according to vehicle speed range, and create a gearbox shifting program for each vehicle road condition speed segment; S2: Acquire road condition speed information during vehicle operation, and determine the vehicle road condition speed zone based on the road condition speed information; S3: Obtain the target gearbox shifting program corresponding to the determined road condition speed zone, and calibrate the gearbox using the target gearbox shifting program.

[0051] Furthermore, the logical instructions in the aforementioned memory can be implemented as software functional units and sold or used as independent products, and can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a 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 a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0052] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0053] The embodiments of the AMT transmission shift program control device provided in this invention belong to the same inventive concept as the AMT transmission shift program control methods in the above embodiments. For details not described in detail in the embodiments of the AMT transmission shift program control device, please refer to the embodiments of the above AMT transmission shift program control methods.

[0054] The AMT transmission shift program control device comprises the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein. It can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can implement the described functions using different methods for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0055] Those skilled in the art will understand that various aspects of the AMT transmission shift program control method can be implemented as a system, method, or program product. Therefore, various aspects of this disclosure can be specifically implemented in the following forms: a completely hardware implementation, a completely software implementation (including firmware, microcode, etc.), or a combination of hardware and software aspects, collectively referred to herein as a "circuit," "module," or "system."

[0056] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, the invention is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the invention by those skilled in the art without departing from the spirit and essence of the invention, and such modifications or substitutions should all be within the scope of the invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the invention should also be covered within the protection scope of the invention. Therefore, the protection scope of the invention should be determined by the scope of the claims.

Claims

1. A method for controlling the shifting program of an AMT transmission, characterized in that, Includes the following steps: The road conditions are pre-divided into sections according to vehicle speed range, and a gearbox shifting program is created for each vehicle road condition speed section. The system acquires road condition and speed information during vehicle operation and determines the vehicle's road condition and speed zone based on this information. Obtain the target transmission shift program corresponding to the defined road conditions and vehicle speed range, and use the target transmission shift program to calibrate the transmission; The steps of pre-dividing road conditions into speed ranges and creating a transmission shifting program for each speed range include: The vehicle's road conditions are pre-classified according to speed range into high-speed zone, medium-speed zone, and low-speed zone; Pre-set high-speed range, medium-speed range, and low-speed range; Create a high-speed zone program for the high-speed zone, a medium-speed zone program for the medium-speed zone, and a low-speed zone program for the low-speed zone; The steps for creating a high-speed zone program for high-speed zones, a medium-speed zone program for medium-speed zones, and a low-speed zone program for low-speed zones include: Retrieve the engine speed range during upshifting and downshifting in the vehicle's economy mode, and set it as the adjustment range for the engine speed parameters in the transmission shift program; Create a mid-range speed zone program based on the retrieved transmission shift program in the economic mode, and configure the mid-range speed zone program for use in the mid-range speed zone operating conditions. Based on the medium-speed range program, the engine speed range set for gear shifting is adjusted downwards to form the low-speed range program, and the low-speed range program is configured for use in low-speed operating conditions. Based on the medium-speed range program, the engine speed range set for gear shifting is adjusted upwards to form the high-speed range program, and the high-speed range program is configured for use in high-speed operating conditions.

2. The AMT transmission shift program control method according to claim 1, characterized in that, The steps for pre-setting the high-speed range, medium-speed range, and low-speed range include: The low-speed range is set to [0, M(1+a%)], where a% is the first set ratio; The medium-speed range is set as [M(1+a%), N(1+b%)], where b% is the second set ratio; Define the high-speed range as [N(1+b%), P]; Where M, N, and P are numbers representing vehicle speed, with M being less than N and N being less than P.

3. The AMT transmission shift program control method according to claim 2, characterized in that, The values ​​of the first set ratio and the second set ratio are selected based on the squared difference of vehicle speed fluctuation; the range of the first set ratio and the second set ratio is [-1, 0].

4. The AMT transmission shift program control method according to claim 2, characterized in that, The steps for acquiring road condition and vehicle speed information during vehicle operation, and determining the vehicle's road condition and speed zone based on that information, include: During vehicle operation, sensors collect vehicle speed data and upload the speed data to the CAN bus; The vehicle's MCU determines the vehicle speed H and its corresponding road condition and speed zone based on the gear position. When 0≤H≤M(1+a%), the vehicle is determined to be in a low gear and low speed zone; When M(1+a%) < H < N(1+b%), the vehicle is determined to be in the medium speed range. When N(1+b%)≤H≤P, the vehicle is determined to be in a high-speed zone.

5. The AMT transmission shift program control method according to claim 4, characterized in that, The steps for obtaining the target transmission shift program corresponding to a defined road condition and vehicle speed range, and then calibrating the transmission using the target transmission shift program, include: Step S31: Obtain vehicle road conditions and speed zones; When the vehicle is in a low gear and low speed range, proceed to step S32; When the vehicle is in the medium speed range, proceed to step S33; When the vehicle is in a high-speed zone, proceed to step S34; Step S32: Using the low-gear, low-speed range program as the target transmission program, proceed to step S35; Step S33: Using the medium-speed range program as the target transmission program, proceed to step S35; Step S34: Using the high-gear, high-speed range program as the target transmission program, proceed to step S35; Step S35: Calibrate the transmission using the target transmission program.

6. The AMT transmission shift program control method according to claim 5, characterized in that, The steps for calibrating the transmission using the target transmission program include: Replace the engine speed during upshifts in the standard program with the engine speed during upshifts in the target transmission program. Replace the engine speed during downshifting in the standard program with the engine speed during downshifting in the target transmission program. Control the engine speed and determine and execute the upshift or downshift of the transmission according to the upshift or downshift speed set by the target transmission program.

7. An AMT transmission shift program control device, characterized in that, This includes a transmission program creation module, a vehicle speed and operating condition determination module, and a transmission program calibration module; The transmission program creation module is used to pre-divide the vehicle road conditions into segments according to the vehicle speed range, and create a transmission shift program for each vehicle road condition speed segment. The vehicle speed and operating condition determination module is used to acquire road condition and vehicle speed information during vehicle operation and determine the vehicle's road condition and vehicle speed zone based on the road condition and vehicle speed information. The transmission program calibration module is used to obtain the target transmission program corresponding to a defined vehicle road condition and speed zone, and to calibrate the transmission using the target transmission program. The steps of pre-dividing road conditions into segments based on vehicle speed ranges and creating a transmission shifting program for each vehicle road condition speed segment include: The vehicle's road conditions are pre-classified according to speed range into high-speed zone, medium-speed zone, and low-speed zone; Pre-set high-speed range, medium-speed range, and low-speed range; Create a high-speed zone program for the high-speed zone, a medium-speed zone program for the medium-speed zone, and a low-speed zone program for the low-speed zone; The steps for creating a high-speed zone program for high-speed zones, a medium-speed zone program for medium-speed zones, and a low-speed zone program for low-speed zones include: Retrieve the engine speed range during upshifting and downshifting in the vehicle's economy mode, and set it as the adjustment range for the engine speed parameters in the transmission shift program; Create a mid-range speed zone program based on the retrieved transmission shift program in the economic mode, and configure the mid-range speed zone program for use in the mid-range speed zone operating conditions. Based on the medium-speed range program, the engine speed range set for gear shifting is adjusted downwards to form the low-speed range program, and the low-speed range program is configured for use in low-speed operating conditions. Based on the medium-speed range program, the engine speed range set for gear shifting is adjusted upwards to form the high-speed range program, and the high-speed range program is configured for use in high-speed operating conditions.

8. An electronic device, characterized in that, The electronic device includes: at least one processor; and a memory communicatively connected to the at least one processor; the memory stores computer program instructions executable by the at least one processor, the computer program instructions being executed by the at least one processor to enable the at least one processor to perform the AMT transmission shift program control method as described in any one of claims 1 to 6.

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