Gear position control method and device, electronic device, and storage medium

Abstract

The present application discloses a gear control method and device, electronic equipment, and storage medium. The method includes: when the gear needs to be changed, determining the first moment of inertia of the current gear, the target gear to be changed, the current first speed of the engine, and the second speed of the engine corresponding to the gear change; determining the first speed and the target gear kinetic energy corresponding to the first moment of inertia according to a pre-established first mapping relationship between the engine speed, the moment of inertia, and the gear kinetic energy; determining the target gear kinetic energy and the second moment of inertia of the gear of the target gear corresponding to the second speed based on the first mapping relationship; determining the target rotation radius corresponding to the second moment of inertia according to a pre-established second mapping relationship between the moment of inertia and the rotation radius of the gear; and adjusting the rotation radius corresponding to the target gear according to the target rotation radius during the gear change process. This makes the gear shifting operation smoother and improves driving comfort.

Description

Background Art

[0002] In the prior art, the shifting strategy of automatic transmission vehicles is generally to control shifting according to parameters such as vehicle speed, engine speed, or vehicle acceleration. However, during the gear shifting process of the transmission, vehicle jitter or a sense of jerk may occur, which has a certain impact on vehicle comfort and, in severe cases, affects the riding experience of passengers and drivers. Summary of the Invention

[0003] The purpose of this application is to provide a gear control method, device, electronic device, and storage medium. It is used to solve the problem that vehicle jitter or a sense of jerk may occur during the gear shifting process of the transmission, which has a certain impact on vehicle comfort and, in severe cases, affects the riding experience of passengers and drivers.

[0004] In a first aspect, an embodiment of this application provides a gear control method, and the method includes:

[0005] When a gear needs to be changed, determine the first moment of inertia of the current gear, the target gear to be changed, the current first speed of the engine, and the second speed of the engine corresponding to the gear change;

[0006] According to a pre-established first mapping relationship between engine speed, moment of inertia, and gear kinetic energy, determine the target gear kinetic energy corresponding to the first speed and the first moment of inertia;

[0007] Based on the first mapping relationship, determine the second moment of inertia of the gear of the target gear corresponding to the target gear kinetic energy and the second speed;

[0008] According to a pre-established second mapping relationship between moment of inertia and gear rotation radius, determine the target rotation radius corresponding to the second moment of inertia;

[0009] During the gear change process, adjust the rotation radius corresponding to the target gear through the target rotation radius.

[0010] In some possible embodiments, the second speed of the engine corresponding to the gear change is determined by the following method:

[0011] According to a pre-set first correspondence relationship between gear and shift speed difference, determine the target shift speed difference corresponding to the target gear;

[0012] Determine the second speed of the engine corresponding to the gear change through the target shift speed difference and the first speed.

[0013] In some possible embodiments, the first moment of inertia of the current gear is determined by the following method:

[0014] Determine the first moment of inertia of the current gear according to the second corresponding relationship between the preset gear position and the moment of inertia.

[0015] In some possible embodiments, after determining the target gear position that needs to be replaced, the method further includes:

[0016] Determine the target moment of inertia corresponding to the target gear position according to the second corresponding relationship;

[0017] Adjust the moment of inertia corresponding to the target gear position to the target moment of inertia.

[0018] In some possible embodiments, the method further includes:

[0019] Determine the initial rotation radius corresponding to the first moment of inertia according to the second mapping relationship;

[0020] During the gear position replacement process, adjust the initial rotation radius by the target rotation radius.

[0021] In a second aspect, an embodiment of the present application provides a gear position control device, and the device includes:

[0022] An initial determination module, configured to determine the first moment of inertia of the current gear, the target gear position to be replaced, the first current speed of the engine, and the second speed of the engine corresponding during the gear position replacement when the gear position needs to be replaced;

[0023] A target gear kinetic energy determination module, configured to determine the target gear kinetic energy corresponding to the first speed and the first moment of inertia according to the first mapping relationship established in advance between the engine speed, the moment of inertia, and the gear kinetic energy;

[0024] A second moment of inertia determination module, configured to determine the second moment of inertia of the gear of the target gear position corresponding to the target gear kinetic energy and the second speed based on the first mapping relationship;

[0025] A target rotation radius determination module, configured to determine the target rotation radius corresponding to the second moment of inertia according to the second mapping relationship established in advance between the moment of inertia and the rotation radius of the gear;

[0026] An adjustment module, configured to adjust the rotation radius corresponding to the target gear position by the target rotation radius during the gear position replacement process.

[0027] In a third aspect, an embodiment of the present application provides an electronic device, including at least one processor; and a memory communicatively connected to the at least one processor; wherein, the memory stores instructions executable by the at least one processor, and when the instructions are executed by the at least one processor, the at least one processor is enabled to execute the gear control method provided in the above first aspect.

[0028] In a fourth aspect, an embodiment of the present application provides a computer storage medium, which stores a computer program for causing a computer to execute the gear control method provided in the above first aspect.

[0029] In the embodiment of the present application, in order to solve the problem that vehicle jitter or jerks may occur during the gear shifting process of the gearbox, which has a certain impact on the comfort of the vehicle and seriously affects the riding experience of the driver and passengers, the embodiment of the present application fully considers the rotational inertia of the gears of the gearbox and uses gears with variable rotational inertia, making the gear shifting operation smoother, improving driving comfort, and also having a certain improvement in economy and emissions, and improving the efficiency of gear control.

[0030] Other features and advantages of the present application will be described in the following description, and in part will be obvious from the description, or can be understood by implementing the present application. The objectives and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. Obviously, the following introduced drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic diagram of parameter changes during gear shifting according to an embodiment of the present application;

[0033] Figure 2 It is a schematic flowchart of a gear control method according to an embodiment of the present application;

[0034] Figure 3 It is a specific flowchart of a gear control method according to an embodiment of the present application;

[0035] Figure 4 It is a schematic structural diagram of a gear control device according to an embodiment of the present application;

[0036] Figure 5Schematic diagram of the structure of an electronic device according to an embodiment of the present application. Detailed implementation manners

[0037] The technical solutions in the embodiments of the present application will be clearly and elaborately described below with reference to the accompanying drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B may mean A or B. The "and / or" in the text is only an associative relationship describing the associated objects, indicating that there can be three relationships. For example, A and / or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality of" means two or more than two.

[0038] In the description of the embodiments of the present application, unless otherwise specified, the term "a plurality of" means two or more than two, and other quantifiers should be understood similarly. The preferred embodiments described herein are only used to illustrate and explain the present application and are not used to limit the present application. And without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0039] To further illustrate the technical solutions provided by the embodiments of the present application, the following will be described in detail with reference to the accompanying drawings and specific implementation manners. Although the embodiments of the present application provide method operation steps as shown in the following embodiments or drawings, based on routine or non-creative labor, more or fewer operation steps may be included in the method. In steps where there is no necessary causal relationship logically, the execution order of these steps is not limited to the execution order provided by the embodiments of the present application. When the method is actually processed or executed by the control device, it can be executed in the order shown in the embodiments or drawings or executed in parallel.

[0040] In view of the problem that in the related art, vehicle jitter or jerks may occur during the gear shifting process of the gearbox, which has a certain impact on the comfort of the vehicle, and seriously affects the riding experience of the driver and passengers. The present application proposes a gear control method, device, and electronic device, which can make the gear shifting smoother and improve the driving comfort.

[0041] Other features and advantages of the present application will be described in the subsequent specification, and part of them will become obvious from the specification or will be understood by implementing the present application. The objectives and other advantages of the present application can be achieved and obtained through the structures specifically pointed out in the written specification, claims, and drawings.

[0042] The gear control method in the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0043] Explanation of related terms:

[0044] Moment of inertia: A measure of the inertia of a rigid body rotating about an axis. The moment of inertia depends only on the shape of the rigid body, the mass distribution, and the position of the axis of rotation, and is independent of the rotational state of the rigid body about the axis (such as the magnitude of the angular velocity).

[0045] During the current gearshift process of the transmission, vehicle jitter or a sense of jerking may occur, which has a certain impact on vehicle comfort. Part of the reason is that the moments of inertia of the gears in different gears of the transmission are different. Figure 1 is a curve graph of relevant parameters during the gearshift process of a 12-speed transmission of a commercial vehicle. The abscissa is time, and the ordinates from bottom to top are rotational speed, gear position, and vehicle speed. From Figure 1 it can be seen that as the gear position is increased, while the vehicle speed increases, there is a process of rotational speed fluctuation every time the gear is changed. Through multiple tests, it is found that there are significant differences in the moments of inertia corresponding to different gears of the transmission. See Table 1 for the moments of inertia corresponding to each gear of the transmission for a certain vehicle configuration. If the energy generated by the moment of inertia is ignored during the gearshift process, it will lead to improper gearshift timing or a sense of jerking in the whole vehicle during the gearshift process, seriously affecting driving comfort, vehicle economy, emissions and other performances.

[0046] Name <![CDATA[Moment of inertia / kg.m 2 > 1st gear of the transmission 30 6th gear of the transmission 5 12th gear of the transmission 0.3

[0047] Figure 2 shows a schematic flow diagram of a gear control method provided by an embodiment of the present application, including:

[0048] Step 201: When a gear change is required, determine the first moment of inertia of the current gear, the target gear to be changed, the current first rotational speed of the engine, and the second rotational speed of the engine corresponding to the gear change.

[0049] Specifically, the second rotational speed of the engine corresponding to the gear change is determined in the following manner:

[0050] According to a first corresponding relationship between the gear position and the shift rotational speed difference set in advance, determine the target shift rotational speed difference corresponding to the target gear position; through the target shift rotational speed difference and the first rotational speed, determine the second rotational speed of the engine corresponding to the gear change.

[0051] The first corresponding relationship represents the shift rotational speed difference corresponding to each gear position. For example, the shift rotational speed difference when shifting from gear 1 to gear 3 is a. When the target gear position is determined to be gear 3, use the first rotational speed A of the current gear position and the shift rotational speed difference a to determine the second rotational speed of the target gear position, that is, A + a.

[0052] As an optional implementation manner, the first moment of inertia of the current gear is determined by the following method: According to a second corresponding relationship between the gear position and the moment of inertia set in advance, determine the first moment of inertia of the current gear.

[0053] The second corresponding relationship represents the moment of inertia of the gear corresponding to each gear position. For example, it is known that the current gear position is the first gear position, and the first moment of inertia corresponding to the first gear position is determined according to the second corresponding relationship.

[0054] Step 202: Determine the target gear kinetic energy corresponding to the first rotational speed and the first moment of inertia according to the pre-established first mapping relationship among the engine rotational speed, the moment of inertia, and the gear kinetic energy.

[0055] Specifically, the present application determines the first mapping relationship through the following formula:

[0056] E = (J * (2πn) 2 ) / 2;

[0057] where E is the gear kinetic energy, J is the moment of inertia, and n is the engine rotational speed. It can be seen from the formula that according to the pre-established first mapping relationship, when the first rotational speed and the first moment of inertia are determined, the target gear kinetic energy can be determined.

[0058] Step 203: Based on the first mapping relationship, determine the second moment of inertia of the gear of the target gear position corresponding to the target gear kinetic energy and the second rotational speed.

[0059] Specifically, according to the principle of conservation of kinetic energy, when shifting gears, ensuring that the gear kinetic energy before shifting is balanced with the gear kinetic energy after shifting, that is, the gear kinetic energy before shifting is equal to the gear kinetic energy after shifting, can reduce the impact and jerks caused by shifting gears. Therefore, based on the first mapping relationship, with the target gear kinetic energy (E) known and the second rotational speed (n) known, the second moment of inertia can be obtained.

[0060] Step 204: Determine the target rotation radius corresponding to the second moment of inertia according to the pre-established second mapping relationship between the moment of inertia and the rotation radius of the gear.

[0061] Specifically, the second mapping relationship is determined through the following formula:

[0062] J = mr 2 ;

[0063] where m is the gear mass, r is the rotation radius of the gear, and J is the moment of inertia. It can be seen from the second mapping relationship formula that for gears of the same mass, the moment of inertia is directly proportional to the rotation radius of the gear. After determining the second moment of inertia through the first mapping relationship, the target rotation radius corresponding to the second moment of inertia is determined through the second mapping relationship formula.

[0064] Step 205: During the process of changing the gear position, adjust the rotation radius corresponding to the target gear position through the target rotation radius.

[0065] Specifically, after obtaining the target rotation radius through the second mapping relationship formula in step 204, it can be known that if the rotation radius of the gear reaches the target rotation radius after changing the gear position, the effect of smooth gear shifting to prevent jerks can be achieved. Therefore, during the process of changing the gear position, the rotation radius corresponding to the target gear position is adjusted so that the rotation radius corresponding to the target gear position reaches the target rotation radius.

[0066] As an alternative implementation, after determining the target gear position to be changed, the method further includes: determining the target moment of inertia corresponding to the target gear position according to the second correspondence; adjusting the moment of inertia corresponding to the target gear position to the target moment of inertia.

[0067] Specifically, in order to prevent insufficient adjustment, according to the second correspondence, the target moment of inertia of the gear corresponding to the target gear position is determined. Before changing the gear position, the moment of inertia corresponding to the target gear position is pre-adjusted to the target moment of inertia, so that after subsequent gear shifting, the rotation radius of the gear is adjusted on the basis of the target moment of inertia, making the adjustment result more accurate, and also saving adjustment time to a certain extent and improving the efficiency of gear position control.

[0068] As an alternative implementation, the method further includes: determining the initial rotation radius corresponding to the first moment of inertia according to the second mapping relationship; adjusting the initial rotation radius through the target rotation radius during the process of changing the gear position.

[0069] Specifically, if only adjusting the moment of inertia of the gear corresponding to the target gear position still cannot achieve the best effect, in order to improve the efficiency of gear position control, the target rotation radius can be used to simultaneously adjust the current initial rotation radius and the rotation radius corresponding to the target gear position, so as to reduce the vehicle jerk before and after gear shifting.

[0070] This application fully considers the moment of inertia of the gears in the transmission and uses gears with variable moment of inertia, making the gear shifting operation smoother, improving driving comfort, and also having a certain improvement in economy and emissions, and improving the efficiency of gear position control.

[0071] See Figure 3 The overall flowchart of the gear position control in this application;

[0072] Step 301: Determine that a gear position needs to be changed;

[0073] Step 302: Determine the target shift speed difference corresponding to the target gear position according to the first correspondence between the gear position and the shift speed difference set in advance;

[0074] Step 303: Determine the second speed corresponding to the engine when changing the gear position through the target shift speed difference and the first speed;

[0075] Step 304: Determine the first moment of inertia of the current gear according to the second corresponding relationship between the preset gear positions and the moments of inertia.

[0076] Step 305: Determine the target moment of inertia corresponding to the target gear position according to the second corresponding relationship.

[0077] Step 306: Adjust the moment of inertia corresponding to the target gear position to the target moment of inertia.

[0078] Step 307: Determine the target gear kinetic energy corresponding to the first rotational speed and the first moment of inertia.

[0079] Determine according to the first mapping relationship between the engine rotational speed, the moment of inertia and the gear kinetic energy established in advance.

[0080] Step 308: Determine the second moment of inertia of the gear of the target gear position corresponding to the target gear kinetic energy and the second rotational speed.

[0081] Step 309: Determine the target rotation radius corresponding to the second moment of inertia.

[0082] Determine the target rotation radius according to the second mapping relationship between the moment of inertia and the rotation radius of the gear established in advance.

[0083] Step 310: Determine the initial rotation radius corresponding to the first moment of inertia according to the second mapping relationship.

[0084] Step 311: During the gear position replacement process, adjust the initial rotation radius with the target rotation radius.

[0085] Step 312: During the gear position replacement process, adjust the rotation radius corresponding to the target gear position with the target rotation radius.

[0086] Embodiment 2

[0087] Based on the same inventive concept, the present application further provides a gear position control device, as Figure 4 shown, the device includes:

[0088] An initial determination module 401, configured to determine the first moment of inertia of the current gear, the target gear position to be replaced, the current first rotational speed of the engine, and the second rotational speed of the engine corresponding during the gear position replacement when a gear position replacement is required.

[0089] A target gear kinetic energy determination module 402, configured to determine the target gear kinetic energy corresponding to the first rotational speed and the first moment of inertia according to the first mapping relationship between the engine rotational speed, the moment of inertia and the gear kinetic energy established in advance.

[0090] A second moment of inertia determination module 403 is configured to determine a second moment of inertia of a gear of a target gear position corresponding to the kinetic energy of the target gear and the second rotational speed based on the first mapping relationship;

[0091] A target rotation radius determination module 404 is configured to determine a target rotation radius corresponding to the second moment of inertia according to a second mapping relationship between the moment of inertia and the rotation radius of the gear;

[0092] An adjustment module 405 is configured to adjust a rotation radius corresponding to the target gear position by the target rotation radius during a gear shifting process.

[0093] Optionally, the initial determination module 401 is specifically configured to: determine a target shift speed difference corresponding to the target gear position according to a first correspondence between the gear position and the shift speed difference set in advance;

[0094] Determine a second rotational speed of the engine corresponding to the gear shift based on the target shift speed difference and the first rotational speed.

[0095] Optionally, the initial determination module 401 is specifically configured to: determine a first moment of inertia of a gear of the current gear position according to a second correspondence between the gear position and the moment of inertia set in advance.

[0096] Optionally, the initial determination module 401 is further configured to: determine a target moment of inertia corresponding to the target gear position according to the second correspondence; adjust the moment of inertia corresponding to the target gear position to the target moment of inertia.

[0097] Optionally, the adjustment module 405 is further configured to: determine an initial rotation radius corresponding to the first moment of inertia according to the second mapping relationship; adjust the initial rotation radius by the target rotation radius during the gear shifting process.

[0098] After introducing the gear control method and device of the exemplary embodiment of the present application, next, an electronic device according to another exemplary embodiment of the present application is introduced.

[0099] Those skilled in the art of the present technical field can understand that various aspects of the present application can be implemented as a system, a method, or a program product. Therefore, various aspects of the present application can be specifically implemented in the following forms, namely: a complete hardware implementation manner, a complete software implementation manner (including firmware, microcode, etc.), or an implementation manner combining hardware and software aspects, which can be collectively referred to as "circuit", "module", or "system" here.

[0100] In some possible embodiments, the electronic device according to the present application may at least include at least one processor and at least one memory. Among them, the memory stores program code, and when the program code is executed by the processor, the processor is caused to execute the steps in the gear control method according to various exemplary embodiments of the present application described above in this specification.

[0101] Reference will now be made to Figure 5 to describe the electronic device 130 according to this embodiment of the present application, that is, the above-mentioned temperature prediction and decision-making device. Figure 5 The illustrated electronic device 130 is merely an example and should not impose any limitation on the functions and usage scope of the embodiments of the present application.

[0102] As Figure 5 shown, the electronic device 130 is presented in the form of a general-purpose electronic device. The components of the electronic device 130 may include, but are not limited to: the above-mentioned at least one processor 131, the above-mentioned at least one memory 132, and a bus 133 connecting different system components (including the memory 132 and the processor 131).

[0103] The bus 133 represents one or more of several types of bus structures, including a memory bus or a memory controller, a peripheral bus, a processor, or a local bus using any bus structure in a variety of bus structures.

[0104] The memory 132 may include a readable medium in the form of a volatile memory, such as a random access memory (RAM) 1321 and / or a cache memory 1322, and may further include a read-only memory (ROM) 1323.

[0105] The memory 132 may further include a program / utilities 1325 having a set (at least one) of program modules 1324. Such program modules 1324 include, but are not limited to: an operating system, one or more application programs, other program modules, and program data. The implementation of a network environment may be included in each or some combination of these examples.

[0106] The electronic device 130 may also communicate with one or more external devices 134 (such as a keyboard, a pointing device, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 130, and / or communicate with any device (such as a router, a modem, etc.) that enables the electronic device 130 to communicate with one or more other electronic devices. Such communication may be carried out through the input / output (I / O) interface 135. Moreover, the electronic device 130 may also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through the network adapter 136. As shown in the figure, the network adapter 136 communicates with other modules for the electronic device 130 through the bus 133. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 130, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0107] In some possible implementation manners, various aspects of a gear control method provided in this application may also be implemented in the form of a program product, which includes program code. When the program product runs on a computer device, the program code is used to cause the computer device to execute the steps of a gear control method according to various exemplary implementation manners of this application described above in this specification.

[0108] The program product may adopt any combination of one or more readable media. The readable media may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0109] The program product for monitoring in the implementation manner of this application may adopt a portable compact disc read-only memory (CD-ROM) and include program code, and may run on an electronic device. However, the program product of this application is not limited thereto. In this document, the readable storage medium may be any tangible medium that contains or stores a program, and this program may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0110] A readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, in which readable program code is carried. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The readable signal medium can also be any readable medium other than a readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0111] The program code contained on the readable medium can be transmitted with any appropriate medium, including but not limited to wireless, wired, optical fiber cable, RF, etc., or any suitable combination of the above.

[0112] The program code for performing the operations of this application can be written in any combination of one or more programming languages, including object-oriented programming languages - such as Java, C++, etc., and also including conventional procedural programming languages - such as the "C" language or similar programming languages. The program code can be executed entirely on the user's electronic device, partially on the user's device, executed as a stand-alone software package, partially on the user's electronic device and partially on a remote electronic device, or entirely on a remote electronic device or server. In the case of a remote electronic device, the remote electronic device can be connected to the user's electronic device through any type of network - including a local area network (LAN) or a wide area network (WAN) - or, alternatively, can be connected to an external electronic device (e.g., by using an Internet service provider to connect through the Internet).

[0113] It should be noted that although several units or subunits of the apparatus are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to the embodiments of this application, the features and functions of the two or more units described above can be embodied in one unit. Conversely, the features and functions of one unit described above can be further divided and embodied by multiple units.

[0114] In addition, although the operations of the method of this application are described in a specific order in the drawings, this does not require or imply that these operations must be performed in that specific order, or that all the operations shown must be performed to achieve the desired result. Additionally or alternatively, some steps can be omitted, multiple steps can be combined into one step for execution, and / or one step can be decomposed into multiple steps for execution.

[0115] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0116] The present application is described with reference to the flowcharts and block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and block diagram can be implemented by computer program instructions, as well as the combination of flows and blocks in the flowchart and block diagram. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in one Figure 1 one flow or multiple flows and blocks Figure 1 or multiple blocks.

[0117] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device implements the functions specified in one Figure 1 one flow or multiple flows and blocks Figure 1 or multiple blocks.

[0118] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one Figure 1 one flow or multiple flows and blocks Figure 1 or multiple blocks.

[0119] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0120] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

1. A gear control method, characterized in that: The method comprises: When the gear needs to be changed, determine the first rotational inertia of the gear in the current gear, the target gear to be changed, the current first speed of the engine, and the second speed of the engine corresponding to the gear change; Determining a target gear kinetic energy corresponding to the first speed and the first moment of inertia according to a pre-established first mapping relationship between the engine speed, the moment of inertia and the gear kinetic energy; Determining, based on the first mapping relationship, the target gear kinetic energy and a second rotational inertia of the gear of the target gear position corresponding to the second speed; Determining a target rotation radius corresponding to the second moment of inertia according to a pre-established second mapping relationship between the moment of inertia and the rotation radius of the gear; During the gear change process, the rotation radius corresponding to the target gear is adjusted according to the target rotation radius.

2. The method according to claim 1, characterized in that: The second speed of the engine corresponding to the gear change is determined by the following method: Determining a target shift speed difference corresponding to the target gear position according to a preset first correspondence relationship between the gear position and the shift speed difference; A second speed corresponding to the engine when changing gears is determined by the target shift speed difference and the first speed.

3. The method according to claim 1, characterized in that The first moment of inertia of the gear in the current gear position is determined by the following method: According to a preset second corresponding relationship between the gear position and the moment of inertia, the first moment of inertia of the gear at the current gear position is determined.

4. The method according to claim 3, characterized in that After determining the target gear position to be changed, the method further includes: determining a target moment of inertia corresponding to the target gear position according to the second corresponding relationship; The moment of inertia corresponding to the target gear position is adjusted to the target moment of inertia.

5. The method according to claim 1, characterized in that: The method further comprises: determining an initial rotation radius corresponding to the first moment of inertia according to the second mapping relationship; During the gear change process, the initial rotation radius is adjusted by the target rotation radius.

6. A gear control device, characterized in that: The device includes: An initial determination module, used for determining, when a gear change is required, a first moment of inertia of the gear of the current gear, a target gear to be changed, a current first speed of the engine, and a second speed of the engine corresponding to the gear change; a module for determining a target gear kinetic energy, configured to determine a target gear kinetic energy corresponding to the first rotational speed and the first rotational inertia according to a pre-established first mapping relationship among the engine rotational speed, the rotational inertia and the gear kinetic energy; a second rotational inertia determination module, configured to determine, based on the first mapping relationship, a second rotational inertia of the gear of the target gear position corresponding to the target gear kinetic energy and the second speed; A target rotation radius determination module, configured to determine a target rotation radius corresponding to the second rotation inertia according to a pre-established second mapping relationship between the rotation inertia and the rotation radius of the gear; The adjustment module is used to adjust the rotation radius corresponding to the target gear position through the target rotation radius during the gear change process.

7. The device according to claim 6, characterized in that The initial determination module is specifically used to: determine the target shift speed difference corresponding to the target gear position according to a preset first correspondence relationship between the gear position and the shift speed difference; A second speed corresponding to the engine when changing gears is determined by the target shift speed difference and the first speed.

8. The device according to claim 6, characterized in that The initial determination module is specifically used to determine the first moment of inertia of the gear in the current gear according to a preset second corresponding relationship between the gear and the moment of inertia.

9. An electronic device, characterized in that: It comprises at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the method as described in any one of claims 1-5.

10. A computer storage medium, characterized in that: The computer storage medium stores a computer program, and the computer program is used to make a computer execute the method according to any one of claims 1 to 5.

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