CN118167789B

CN118167789B - Torque control method, device, equipment and medium for transmission

Info

Publication number: CN118167789B
Application number: CN202410593555.5A
Authority: CN
Inventors: 程云江; 李浩程; 李文军
Original assignee: Shengrui Transmission Co Ltd
Current assignee: Shengrui Transmission Co Ltd
Priority date: 2024-05-14
Filing date: 2024-05-14
Publication date: 2024-08-20
Anticipated expiration: 2044-05-14
Also published as: CN118167789A

Abstract

The embodiment of the disclosure relates to a torque control method, a device, equipment and a medium of a transmission, wherein the method comprises the following steps: in response to obtaining a torque lifting request of the transmission, determining a target torque corresponding to the torque lifting request; determining whether the transmission meets a preset torque limiting control condition; under the condition that a preset torque limiting control condition is met, controlling the current control torque of the transmission to be a predetermined first torque, wherein the first torque is greater than or equal to the current control torque; and taking the first torque as the initial torque, and controlling the control torque of the transmission to rise to the target torque according to at least one predetermined lifting slope. In the technical scheme, the smoothness of torque lifting is improved, driving impact is reduced, and driving comfort is improved.

Description

Torque control method, device, equipment and medium for transmission

Technical Field

The disclosure relates to the technical field of vehicle control, and in particular relates to a torque control method, device, equipment and medium of a transmission.

Background

The automatic transmission is widely applied to vehicles, and can realize stepless speed change, thereby providing good drivability and comfort for drivers. With the increasing number of vehicles on the market, the more widely the automatic transmission is used, the more and more demanding is placed on its comfort and stability.

In the driving process, the driving working condition is complex, especially when the hydraulic torque converter is in a sliding film or closed state, after the driving intention is suddenly changed, the driver suddenly steps on the accelerator in the process of stepping on the brake or sliding, at the moment, the torque of the engine can have a zero crossing phenomenon, the rotating speed can have a crossing phenomenon, and larger impact is easy to generate. Therefore, a need exists for a way to reduce the impact sensation when lifting torque.

Disclosure of Invention

In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a torque control method, device, equipment and medium for a transmission, which improves smoothness of torque lifting, reduces driving impact feeling, and improves driving comfort.

The embodiment of the disclosure provides a torque control method of a transmission, comprising the following steps: in response to acquiring a torque lifting request of a transmission, determining a target torque corresponding to the torque lifting request; determining whether the transmission meets a preset torque limiting control condition; controlling the current control torque of the transmission to be a predetermined first torque under the condition that the preset torque limiting control condition is met, wherein the first torque is greater than or equal to the current control torque; and taking the first torque as an initial torque, and controlling the control torque of the transmission to rise to the target torque according to at least one predetermined lifting slope.

The embodiment of the disclosure also provides a torque control device of a transmission, which comprises: the first determining module is used for determining a target torque corresponding to a torque lifting request of the transmission in response to the torque lifting request; the second determining module is used for determining whether the transmission meets a preset torque limiting control condition or not; the first control module is used for controlling the current control torque of the transmission to be a predetermined first torque under the condition that the preset torque limiting control condition is met, wherein the first torque is greater than or equal to the current control torque; and the second control module is used for taking the first torque as an initial torque and controlling the control torque of the transmission to be lifted to the target torque according to at least one preset lifting slope.

The embodiment of the disclosure also provides an electronic device, which comprises: a processor; a memory for storing the processor-executable instructions; the processor is configured to read the executable instructions from the memory and execute the instructions to implement a torque control method of a transmission as provided by an embodiment of the present disclosure.

The present disclosure also provides a computer-readable storage medium storing a computer program for executing the torque control method of the transmission as provided by the embodiments of the present disclosure.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

According to the torque control scheme of the transmission, the torque lifting request of the transmission is obtained, the target torque corresponding to the torque lifting request is determined, whether the transmission meets the preset torque limiting control condition or not is determined, and further, under the condition that the preset torque limiting control condition is met, the current control torque of the transmission is controlled to be a first predetermined torque, wherein the first torque is greater than or equal to the current control torque, the first torque is taken as an initial torque, and the control torque of the transmission is controlled to be lifted to the target torque according to at least one preset lifting slope. In the technical scheme, the smoothness of torque lifting is improved, driving impact is reduced, and driving comfort is improved.

Drawings

The above and other features, advantages, and aspects of embodiments of the present disclosure will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. The same or similar reference numbers will be used throughout the drawings to refer to the same or like elements. It should be understood that the figures are schematic and that elements and components are not necessarily drawn to scale.

FIG. 1 is a flow chart of a torque control method for a transmission provided in an embodiment of the present disclosure;

FIG. 2 is a flow chart of a torque control method for a transmission provided in an embodiment of the present disclosure;

FIG. 3 is a torque control flow schematic of a transmission provided in an embodiment of the present disclosure;

FIG. 4 is a graphical representation of control torque of a transmission provided by an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a torque control apparatus for a transmission according to an embodiment of the present disclosure;

Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the disclosure.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure have been shown in the accompanying drawings, it is to be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.

It should be understood that the various steps recited in the method embodiments of the present disclosure may be performed in a different order and/or performed in parallel. Furthermore, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the present disclosure is not limited in this respect.

The term "including" and variations thereof as used herein are intended to be open-ended, i.e., including, but not limited to. The term "based on" is based at least in part on. The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments. Related definitions of other terms will be given in the description below.

It should be noted that the terms "first," "second," and the like in this disclosure are merely used to distinguish between different devices, modules, or units and are not used to define an order or interdependence of functions performed by the devices, modules, or units.

It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those of ordinary skill in the art will appreciate that "one or more" is intended to be understood as "one or more" unless the context clearly indicates otherwise.

The names of messages or information interacted between the various devices in the embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

In order to solve the above-described problems, the embodiments of the present disclosure provide a torque control method for a transmission, which is described below with reference to specific embodiments.

Fig. 1 is a flow chart of a torque control method of a transmission according to an embodiment of the present disclosure, which may be performed by a torque control device of the transmission, where the device may be implemented in software and/or hardware, and may be generally integrated in an electronic device. As shown in fig. 1, the method includes:

in step 101, in response to obtaining a torque boost request for the transmission, a target torque corresponding to the torque boost request is determined.

In one embodiment of the present disclosure, a torque lifting request of a transmission is obtained, where in different application scenarios, the manner in which the torque lifting request is obtained is different, in some possible embodiments, whether the accelerator is stepped on may be detected, and when the accelerator is stepped on, the torque lifting request is obtained; in some possible embodiments, in a vehicle with a throttle controlled by a preset throttle button, when the preset throttle button is pressed, a torque boost request is obtained; in some possible embodiments, road condition information of the current scene may be detected, a required vehicle speed is determined according to the road condition information, a current vehicle speed of the current vehicle is obtained, a vehicle speed difference between the required vehicle speed and the current vehicle speed is calculated, and if the vehicle speed difference is greater than a preset difference threshold, a torque lifting request of the transmission is obtained.

In response to obtaining a torque lifting request of the transmission, determining a target torque corresponding to the torque lifting request, where the target torque may be regarded as a driver demand torque, where the target torque may be determined differently in different application scenarios, and in some possible embodiments, determining an opening degree at which the accelerator is stepped on in a case where the accelerator is stepped on to perform the torque lifting request, determining a torque lifting amount according to the opening degree, and determining the target torque according to a sum of the torque lifting amount and the current control torque. Of course, in other possible embodiments, the target torque may be determined in other ways, not specifically illustrated herein.

Step 102, determining whether the transmission satisfies a preset torque limit control condition.

In one embodiment of the present disclosure, it is determined whether the transmission satisfies a preset torque limit control condition, and the torque control method of the transmission according to the embodiment of the present disclosure is used to perform the limited boost of torque only if the preset torque limit control condition is satisfied, where the limited boost is to promote the smoothness of the torque boost, and avoid the driving shock feeling caused by the abrupt torque change.

With reference to specific embodiments, an exemplary description of how to determine whether the transmission meets the preset torque limit control conditions is as follows:

In some possible examples, the first preset torque threshold and the second preset torque threshold are preset, and the first preset torque threshold and the second preset torque threshold may be calibrated according to scene requirements, for example, the first preset torque threshold is-20N, the second preset torque threshold is-5N, and so on. The second torque threshold is larger than a first preset torque threshold, whether the current control torque of the transmission is larger than the first preset torque threshold and smaller than or equal to the second preset torque threshold is determined, and when the current control torque is larger than the first preset torque threshold and smaller than or equal to the second preset torque threshold, it is determined that the transmission meets the preset torque limiting control condition.

In this example, the first preset torque threshold is a relatively large value, and the subsequent torque limiting control is performed only when the current control torque is larger than the first preset torque threshold, so that the problem that the response speed is slower due to the torque limiting control when the current control torque is too small is avoided, in addition, the second preset torque threshold is a relatively small value, and the situation that the second preset torque threshold is possibly larger than 0 is avoided, so that the highest impact feeling of a driver license is usually caused by zero crossing of the torque, namely, when the driver is not stepping on a throttle, the engine torque is changed from negative torque to positive torque (zero crossing phenomenon), and the engine rotating speed is changed from less than the input shaft rotating speed to be larger than the input shaft rotating speed, so that larger impact is generated when the rotating speed passes through, and the comfort is seriously affected.

Of course, in other possible embodiments, in addition to requiring that the current control torque is greater than the first preset torque threshold and less than or equal to the second preset torque threshold, it is further required to determine that the transmission is in a preset sliding film or locking stage, so as to obtain a first accelerator state of a current period and a second accelerator state of a previous period, where the duration of each period may be calibrated in advance, for example, the duration of each period may be calibrated to be 10ms, etc., and it is determined that the first accelerator state is in a preset usage state and the second accelerator state is not in a preset usage state, where the preset usage state includes a state in which the accelerator is depressed, etc.

In some possible examples, a difference between the target torque and the current control torque is calculated, and whether the current control torque is smaller than 0 and whether the target torque is larger than 0 is determined, if the difference between the target torque and the current control torque is larger than a preset first difference threshold and smaller than a second difference threshold, and if the current control torque is smaller than 0 and the target torque is larger than 0, the zero crossing phenomenon of the torque is indicated, and because the difference is larger than the preset first difference threshold and smaller than the second difference threshold, the difference between the current control torque and the target torque is not larger or smaller.

And step 103, controlling the current control torque of the transmission to be a predetermined first torque under the condition that the preset torque limiting control condition is met, wherein the first torque is greater than or equal to the current control torque.

Under the condition that the preset torque limiting control condition is met, controlling the current control torque of the transmission to be a preset first torque, wherein the first torque is larger than or equal to the current control torque, namely, if the first torque is larger than the current control torque, the current control torque can be lifted firstly, and the difference between the current control torque and the target torque is further shortened in order to further shorten the response time.

In different application scenarios, the manner of predetermining the first torque is different, examples are as follows:

In some possible examples, according to a current gear and a current accelerator state of a vehicle, determining a current basic torque of a transmission, wherein the current basic torque can be obtained by querying a preset corresponding relation table through the current gear and the current accelerator state, determining that the maximum value of the current basic torque and the current control torque is a first torque, and if the first torque is the current basic torque, increasing the current control torque to the first torque in advance.

In some possible embodiments, a difference between the target torque and the current control torque may be calculated, a preset increment value is determined according to the difference, and a sum of the current difference and the preset increment value is calculated to obtain the first torque, where a manner of determining the preset increment value according to the difference may be different according to different needs of a scene, for example, a ratio of the difference to a preset difference threshold is calculated, and a product value of the ratio and the preset difference threshold is calculated to obtain the preset increment value, thereby improving the current control torque according to an actual difference condition between the current control torque and the target torque, and improving flexibility of determining the first torque on the basis of ensuring response speed.

And 104, taking the first torque as the initial torque, and controlling the control torque of the transmission to rise to the target torque according to at least one predetermined lifting slope.

In one embodiment of the present disclosure, the first torque is taken as a starting torque, and the control torque of the transmission is controlled to be lifted to a target torque according to at least one predetermined lifting slope, so that the target torque is lifted according to the lifting slope, not suddenly lifted, the smoothness of lifting is ensured, and the lifting impact sense is avoided.

In addition, in the actual execution process, in order to ensure the reliability of the torque-limiting lifting torque, the execution of the torque-limiting control operation and the like can be instructed by the enable bit of the state machine to avoid the repeated execution of the related operation of the torque-limiting and the like. For example, after the preset torque limiting control condition is not satisfied, an enable bit of the state machine is set to K2, and after the preset torque limiting control condition is satisfied, a state bit of the state machine is set to K1, where K1 may be understood as an enable bit for limiting a torque-related operation, after K1 is satisfied, the torque limiting control operation of the embodiment of the present disclosure is executed, when the torque limiting control operation is executed, in order to avoid repeated execution of the torque limiting control operation, the enable bit K1 is set to zero, after execution is completed, the enable bit is set to K2, and the like, for example, when it is detected that the throttle is released, the enable bit K2 is satisfied, so that whether the related operation for limiting the torque is currently executed, and the execution stage of the related operation for limiting the torque, and the like, may be clearly known based on the value of the enable bit.

In summary, in the torque control method of the transmission according to the embodiment of the present disclosure, in response to obtaining a torque lifting request of the transmission, determining a target torque corresponding to the torque lifting request, determining whether the transmission meets a preset torque limiting control condition, and further, controlling a current control torque of the transmission to be a predetermined first torque if the preset torque limiting control condition is met, where the first torque is greater than or equal to the current control torque, and using the first torque as an initial torque, and controlling the control torque of the transmission to be lifted to the target torque according to at least one predetermined lifting slope. In the technical scheme, the smoothness of torque lifting is improved, driving impact is reduced, and driving comfort is improved.

Based on the above embodiments, the lifting slope is a key to ensure smooth lifting of the torque, and in different application scenarios, the control torque of the transmission is controlled to be lifted to the target torque according to at least one predetermined lifting slope, which is described in the following by way of example with reference to specific embodiments:

in one embodiment of the present disclosure, as shown in fig. 2, with the first torque as a starting torque, controlling the transmission to lift to a target torque according to at least one preset lifting slope includes:

And 201, taking the first torque as an initial torque, controlling the transmission to execute a preset torque lifting step, wherein in the preset torque lifting step, the control torque of the transmission is controlled to be lifted according to a corresponding lifting slope.

The preset torque lifting step comprises the steps of determining initial control torque of the transmission before the preset torque lifting step is executed, wherein the initial control torque is control torque of the transmission before the preset torque lifting step is executed, lifting slope and preset execution duration are determined according to current running state parameters of the vehicle, the current running state parameters comprise accelerator, gear and the like of the vehicle, and the lifting slope and the preset execution duration are determined according to the current running state parameters, so that matching of the lifting slope and the preset execution duration is ensured, the situation that the lifting slope is relatively low, the preset execution duration is long, slow response speed is caused and the like is avoided.

The manner of determining the lifting slope and the preset execution duration according to the current running state parameter of the vehicle is different in different application scenarios, and in some possible embodiments, the current running state parameter may belong to a pre-constructed deep learning model, and the corresponding lifting slope and the preset execution duration are output based on the deep learning model.

In some possible examples, a correspondence between the lifting slope and the preset execution duration and the running state parameter may be pre-constructed, and the correspondence may be queried according to the current running state parameter to determine the lifting slope and the preset execution duration, and so on.

In an embodiment of the disclosure, the first torque is used as an initial torque, the torque is lifted according to a lifting slope corresponding to a current preset torque lifting step, and after a preset execution time period, or after the second torque reached by the transmission is greater than a target torque, the execution of the preset torque lifting step is stopped.

In some possible examples, the initial lifting slope value and the slope unit increment value may be calibrated in advance, the lifting slope when the preset torque lifting step is performed for the first time is the initial lifting slope value, the lifting slope when the preset torque lifting step is performed for the second time is the sum value of the initial lifting slope value and the slope unit increment value, the lifting slope when the preset torque lifting step is performed for the third time is the sum value of the second lifting slope value and the slope unit increment value, and the like, that is, after the preset torque lifting step is performed for the first time, the lifting slope value when the preset torque lifting step is performed for the last time is the sum value of the slope value and the slope unit increment value, and the response speed is ensured on the basis of ensuring the torque lifting smoothness. The preset execution duration in this example may be determined according to a lifting slope, where the smaller the lifting slope, the smaller the corresponding preset execution duration, or the preset execution duration may also be a preset value, etc.

Step 202, determining a second torque reached after each execution of the preset torque up step.

Step 203 determines whether the second torque is equal to or greater than the target torque.

And step 204, continuously executing the preset torque lifting step until the control torque of the transmission reaches a second torque which is greater than or equal to the target torque under the condition that the second torque is smaller than the target torque.

In this embodiment, the second torque reached by the transmission after each execution of the preset torque lifting step is determined, whether the second torque is equal to or greater than the target torque is determined, and under the condition that the second torque is less than the target torque, the transmission is controlled to continue to execute the preset torque lifting step until the second torque reached by the transmission is equal to or greater than the target torque. Thus, the preset torque up step may be performed one or more times, etc.

In one embodiment of the present disclosure, after lifting the torque to the target torque, the lifting of the torque is not stopped immediately, so as to avoid the torque falling back, in this embodiment, a summation value of the target torque and a preset torque lifting amount may also be calculated, and the torque of the transmission is lifted to the summation value according to a preset calibration slope, so as to ensure that the torque can reach the driving demand torque, and further, the torque of the transmission is lifted to a preset torque threshold value from the summation value, where the preset torque threshold value is greater than the maximum responsive torque of the transmission, and where the torque of the transmission is lifted from the summation value to the preset torque threshold value without a lifting slope, which is suddenly lifted, thereby ensuring that the torque lifting between the non-responsive summation value to the preset torque threshold value is avoided.

The phase in which the control torque of the transmission is raised from the summation value to the preset torque threshold value may be regarded as a torque limiting control exit phase of the torque limiting raising phase. It is emphasized that, in order to ensure stability of the torque limiting operation, even when the torque is not raised to the target torque, an exit instruction of the torque limiting operation is obtained, for example, when it is detected that the accelerator is released, etc., the enable bit K2 is established, the control torque of the transmission is raised from the current control torque to the preset torque threshold value to exit, instead of directly exiting.

After the phase is exited, a default phase is entered, and a preset torque threshold value sent to the transmission in the default phase is exceeded, so that the transmission does not respond because the maximum response torque of the transmission is exceeded, and therefore, the influence of torque limiting operation on normal driving is avoided.

The preset torque lifting step may be considered as one torque limiting lifting stage each time, so that the control torque of the transmission may be gradually lifted by at least one torque limiting lifting stage, and the torque control method of the transmission of the present disclosure is described below with reference to a specific embodiment, where the torque limiting lifting stage includes stages P1, P2, P3, and P4, where P0 is a default stage, P8 is the torque limiting control exit stage, in this embodiment, the target torque is PumpTqDemand, the current base torque is TqBaseTgt, the control torque of the torque limiting lifting stage is TgtTq, and the current control torque of the engine is PumpTqNoInt, and examples are as follows:

referring to FIG. 3, the torque control phases of the transmission are divided into P0, P1, P2, P3, P4, P8 phases, with the P8 torque limiting control exiting phase. By adopting a state machine control method, the method defaults to enter a phase P0, when the enabling bit K1 of the torque limiting control phase is established, the method sequentially enters the torque limiting control phases P1, P2, P3 and P4, the phase P4 returns to the phase P0 after finishing, and if the disabling bit K2 of the torque limiting control phase is established, the method returns to the phase P8 from the current process control phase and finally returns to the phase P0.

Because the torque limiting control stage adopts a control mode of a state machine, in order to avoid repeated entry of the state machine, after the precondition is met, an enabling bit K1 zero setting condition is added, and one of the following conditions is met: the throttle is released, the enabling bit K1 is set to zero, the execution time length of the torque limiting control stage is longer than the corresponding preset execution time length, and the like.

Referring to fig. 4, stage P0, tgtTq is a default value, stage P1, tgtTq =max (PumpTqNoInt, tqBaseTgt), stage P1 completion condition: tgtTq < = PumpTqDemand, or the execution time length of the P1 phase is longer than or equal to the corresponding preset execution time length; stage P2, tgtTq =initial torque (torque after P1 end) +initial torque P2 step up slope, P2 step up condition: the execution time length of the P2 stage is longer than or equal to the corresponding preset execution time length; stage P3, tgtTq =initial torque (torque after P2 end) +initial torque P3 step up slope, P3 step up condition: tgtTq > = PumpTqDemand or the P3 phase execution time length is greater than or equal to the corresponding preset execution time length; stage P4, tgtTq =initial torque (torque after P3 end) +initial torque P4 step up slope, P4 step up condition: tgtTq > = PumpTqDemand; stage P8, tgtTq =initial torque (torque after P4 ends) +initial torque+boost slope of stage P8, where boost slope of stage P8 may be a preset calibration slope, stage P8 completion condition: tgtTq > = PumpTqDemand + preset torque rise.

With continued reference to fig. 4, the embodiment of the disclosure achieves smooth torque lifting on the premise of achieving the driver demand torque, and sends a suitable torque limiting request by monitoring the current working condition under the condition that a series of parameters such as the driver demand torque, the current running state parameter and the like are known, so that the engine torque and the engine speed can smoothly pass through and cross under the sliding film or the locking state of the hydraulic torque converter, impact is slowed down or avoided, and the driving comfort is improved.

In summary, the torque control method of the transmission according to the embodiments of the present disclosure may smoothly boost the control torque of the transmission based on at least one boost slope, thereby improving the smoothness of torque boost, reducing driving impact feeling, and improving driving comfort.

In order to implement the above embodiments, the present disclosure also proposes a torque control device of a transmission.

Fig. 5 is a schematic structural diagram of a torque control device for a transmission according to an embodiment of the present disclosure, where the device may be implemented in software and/or hardware, and may be generally integrated in an electronic device to perform torque control for the transmission. As shown in fig. 5, the apparatus includes: a first determination module 510, a second determination module 520, a first control module 530, and a second control module 540, wherein,

A first determining module 510, configured to determine a target torque corresponding to a torque lifting request in response to acquiring the torque lifting request of the transmission;

A second determining module 520, configured to determine whether the transmission meets a preset torque limit control condition;

A first control module 530, configured to control a current control torque of the transmission to be a predetermined first torque when a preset torque limit control condition is satisfied, where the first torque is greater than or equal to the current control torque;

The second control module 540 is configured to control the control torque of the transmission to increase to the target torque according to at least one predetermined increase slope with the first torque as the starting torque.

The torque control device of the transmission provided by the embodiment of the disclosure can execute the torque control method of the transmission provided by any embodiment of the disclosure, and has the corresponding functional modules and beneficial effects of the execution method.

To achieve the above embodiments, the present disclosure also proposes a computer program product comprising a computer program/instruction which, when executed by a processor, implements the torque control method of the transmission in the above embodiments.

Referring now in particular to fig. 6, a schematic diagram of an electronic device suitable for use in implementing embodiments of the present disclosure is shown. The electronic devices in the embodiments of the present disclosure may include, but are not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and the like, and stationary terminals such as digital TVs, desktop computers, and the like. The electronic device shown in fig. 6 is merely an example and should not be construed to limit the functionality and scope of use of the disclosed embodiments.

As shown in fig. 6, the electronic device may include a processor (e.g., a central processing unit, a graphics processor, etc.) 601 that may perform various suitable actions and processes in accordance with programs stored in a Read Only Memory (ROM) 602 or programs loaded from a memory 608 into a Random Access Memory (RAM) 603. In the RAM 603, various programs and data required for the operation of the electronic apparatus are also stored. The processor 601, the ROM 602, and the RAM 603 are connected to each other through a bus 604. An input/output (I/O) interface 605 is also connected to bus 604.

In general, the following devices may be connected to the I/O interface 605: input devices 606 including, for example, a touch screen, touchpad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, and the like; an output device 607 including, for example, a Liquid Crystal Display (LCD), a speaker, a vibrator, and the like; memory 608 including, for example, magnetic tape, hard disk, etc.; and a communication device 609. The communication means 609 may allow the electronic device to communicate with other devices wirelessly or by wire to exchange data. While fig. 6 shows an electronic device having various means, it is to be understood that not all of the illustrated means are required to be implemented or provided. More or fewer devices may be implemented or provided instead.

In particular, according to embodiments of the present disclosure, the processes described above with reference to flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a non-transitory computer readable medium, the computer program comprising program code for performing the method shown in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network via communication means 609, or from memory 608, or from ROM 602. When executed by the processor 601, performs the functions defined above in the torque control method of the transmission of the presently disclosed embodiments.

It should be noted that the computer readable medium described in the present disclosure may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this disclosure, a computer-readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present disclosure, however, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, fiber optic cables, RF (radio frequency), and the like, or any suitable combination of the foregoing.

In some embodiments, the clients, servers may communicate using any currently known or future developed network protocol, such as HTTP (HyperText Transfer Protocol ), and may be interconnected with any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network ("LAN"), a wide area network ("WAN"), the internet (e.g., the internet), and peer-to-peer networks (e.g., ad hoc peer-to-peer networks), as well as any currently known or future developed networks.

The computer readable medium may be contained in the electronic device; or may exist alone without being incorporated into the electronic device.

The computer readable medium carries one or more programs which, when executed by the electronic device, cause the electronic device to:

In response to acquiring a torque lifting request of the transmission, determining a target torque corresponding to the torque lifting request, determining whether the transmission meets a preset torque limiting control condition, and further controlling the current control torque of the transmission to be a predetermined first torque under the condition that the preset torque limiting control condition is met, wherein the first torque is greater than or equal to the current control torque, the first torque is taken as an initial torque, and the control torque of the transmission is controlled to be lifted to the target torque according to at least one predetermined lifting slope. In the technical scheme, the smoothness of torque lifting is improved, driving impact is reduced, and driving comfort is improved.

The electronic device may write computer program code for performing the operations of the present disclosure in one or more programming languages, including, but not limited to, an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).

The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The units involved in the embodiments of the present disclosure may be implemented by means of software, or may be implemented by means of hardware. Wherein the names of the units do not constitute a limitation of the units themselves in some cases.

The functions described above herein may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an Application Specific Standard Product (ASSP), a system on a chip (SOC), a Complex Programmable Logic Device (CPLD), and the like.

In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

According to one or more embodiments of the present disclosure, there is provided a computer-readable storage medium storing a computer program for executing the torque control method of the transmission as any one of the present disclosure provides.

The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by persons skilled in the art that the scope of the disclosure referred to in this disclosure is not limited to the specific combinations of features described above, but also covers other embodiments which may be formed by any combination of features described above or equivalents thereof without departing from the spirit of the disclosure. Such as those described above, are mutually substituted with the technical features having similar functions disclosed in the present disclosure (but not limited thereto).

Moreover, although operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order. In certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the present disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are example forms of implementing the claims.

Claims

1. A torque control method of a transmission, comprising the steps of:

In response to acquiring a torque lifting request of a transmission, determining a target torque corresponding to the torque lifting request;

Determining whether the transmission meets a preset torque limiting control condition;

controlling the current control torque of the transmission to be a predetermined first torque under the condition that the preset torque limiting control condition is met, wherein the first torque is greater than or equal to the current control torque;

Taking the first torque as an initial torque, controlling the transmission to execute a preset torque lifting step, wherein in the preset torque lifting step, the control torque of the transmission is controlled to be lifted according to a corresponding lifting slope;

Determining a second torque reached after each execution of the preset torque lifting step;

determining whether the second torque is equal to or greater than the target torque;

Continuing to execute the preset torque lifting step when the second torque is smaller than the target torque until the second torque reached by the control torque of the transmission is greater than or equal to the target torque;

calculating a summation value of the target torque and a preset torque lifting quantity;

Lifting the control torque of the transmission to the summation value according to a preset calibration slope;

And lifting the control torque of the transmission from the summation value to a preset torque threshold value, wherein the preset torque threshold value is larger than the maximum response torque of the transmission.

2. The method of claim 1, wherein the determining whether the transmission meets a preset torque limit control condition comprises:

determining whether a current control torque of the transmission is greater than a first preset torque threshold and less than or equal to a second preset torque threshold, wherein,

And determining that the transmission meets the preset torque limiting control condition under the condition that the current control torque is larger than the first preset torque threshold and smaller than or equal to the second preset torque threshold.

3. The method of claim 2, further comprising, prior to said determining that said transmission meets said preset torque limit control condition:

determining that the transmission is in a preset sliding film or locking stage;

acquiring a first throttle state of a current period and a second throttle state of a previous period;

Determining that the first throttle state is in a preset use state and the second throttle state is not in the preset use state.

4. The method of claim 1, further comprising, prior to said controlling the current control torque of the transmission to be a predetermined first torque:

determining the current basic torque of the transmission according to the current gear and the current throttle state of the vehicle;

and determining the maximum value of the current basic torque and the current control torque as the first torque.

5. The method of claim 1, wherein the preset torque boost step comprises:

determining an initial control torque before performing the preset torque boost step;

Determining a lifting slope and a preset execution duration according to the current running state parameters of the vehicle;

taking the initial control torque as an initial torque, and lifting the control torque of the transmission according to the lifting slope;

and after the preset execution time period, or after the second torque is greater than the target torque, the execution of the preset torque lifting step is stopped.

6. A torque control device for a transmission, comprising:

the first determining module is used for determining a target torque corresponding to a torque lifting request of the transmission in response to the torque lifting request;

The second determining module is used for determining whether the transmission meets a preset torque limiting control condition or not;

The first control module is used for controlling the current control torque of the transmission to be a predetermined first torque under the condition that the preset torque limiting control condition is met, wherein the first torque is greater than or equal to the current control torque;

And the second control module is used for controlling the transmission to execute a preset torque lifting step by taking the first torque as an initial torque, wherein in the preset torque lifting step, the control torque of the transmission is controlled to lift according to a corresponding lifting slope, a second torque which is reached after the preset torque lifting step is executed each time is determined, whether the second torque is larger than or equal to the target torque is determined, and under the condition that the second torque is smaller than the target torque, the preset torque lifting step is continuously executed until the second torque which is reached by the control torque of the transmission is larger than or equal to the target torque, a summation value of the target torque and a preset torque lifting amount is calculated, the control torque of the transmission is lifted to the summation value according to a preset calibration slope, and the control torque of the transmission is lifted to a preset torque threshold value from the summation value, wherein the preset torque threshold value is larger than the maximum response torque of the transmission.

7. An electronic device, the electronic device comprising:

A processor;

a memory for storing the processor-executable instructions;

The processor is configured to read the executable instructions from the memory and execute the executable instructions to implement the torque control method of the transmission of any one of the preceding claims 1-5.

8. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the torque control method of the transmission according to any one of the above claims 1 to 5.