CN117104023A

CN117104023A - Vehicle starting control method and device, electronic equipment and storage medium

Info

Publication number: CN117104023A
Application number: CN202311203400.8A
Authority: CN
Inventors: 张学锋; 陈国栋; 杨云波; 李岩; 王昊; 刘治文; 王小峰; 许健男; 吴刚; 张聪
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2023-09-18
Filing date: 2023-09-18
Publication date: 2023-11-24

Abstract

The invention discloses a vehicle starting control method, a vehicle starting control device, a vehicle starting control equipment and a storage medium. The method comprises the following steps: acquiring current state information of a vehicle, and detecting whether the vehicle is in a pure electric starting mode currently based on the current state information; if the vehicle is in the pure electric starting mode, determining a target rotating speed based on the current accelerator pedal opening, and requesting the target rotating speed of the motor, so that the motor performs closed-loop control based on the target rotating speed, obtaining the current output torque of the motor, controlling the clutch to perform open-loop control based on the current output torque, determining a current rotating speed difference value between the current rotating speed of the motor and the current rotating speed of the clutch, and performing pressurization processing on the clutch based on a preset pressure rate when the current rotating speed difference value is smaller than a first preset difference value. By the technical scheme provided by the embodiment of the invention, the rapid and smooth starting control of the vehicle can be realized, the control precision of the clutch is improved, the problem of speed fluctuation caused by starting of the traditional vehicle is avoided, and the drivability of the vehicle is improved.

Description

Vehicle starting control method and device, electronic equipment and storage medium

Technical Field

The present invention relates to the field of vehicle control technologies, and in particular, to a vehicle start control method, device, apparatus, and storage medium.

Background

With the rapid development of vehicle technology, vehicle start control is an important index for judging automobile driving performance. The starting control of the vehicle is the most commonly used driving working condition in the driving working conditions, and the quality of starting performance directly influences the driving performance of the vehicle.

At present, the existing vehicle starting control mode is to control the starting rotational speed of an engine or a motor through a clutch or a vehicle end, the control mode is lagged, the rotational speed of the motor is required to be controlled through the combination of the clutch, namely, the required clutch combination torque is obtained according to the opening degree of the clutch, so that the rotational speed of the motor is controlled to reach the rotational speed corresponding to the required clutch combination torque, but the clutch is controlled through oil pressure, the oil pressure of the clutch is delayed, so that the clutch combination torque is easy to fluctuate, the control precision is not high, the rotational speed fluctuation is easy to generate in the starting process, the rotational speed is dragged down, and the starting impact problem is solved.

Disclosure of Invention

The invention provides a vehicle starting control method, a device, equipment and a storage medium, which are used for realizing quick and smooth starting control of a vehicle, improving the control precision of a clutch, avoiding the conditions of easy generation of speed fluctuation, low rotation speed dragging and starting impact of the vehicle starting and improving the drivability of the vehicle.

In a first aspect, an embodiment of the present invention provides a vehicle start control method, including:

acquiring current state information of a vehicle;

detecting whether the vehicle is currently in a pure electric starting mode or not based on the current state information;

if the motor is in the pure electric starting mode, determining a target rotating speed based on the current opening of an accelerator pedal, and requesting the target rotating speed of the motor so as to enable the motor to perform closed-loop control based on the target rotating speed;

acquiring the current output torque of the motor, and controlling a clutch to perform open-loop control based on the current output torque;

determining a current rotating speed difference value between the current rotating speed of the motor and the current rotating speed of the clutch, and carrying out pressurization treatment on the clutch based on a preset pressure rate when the current rotating speed difference value is smaller than a first preset difference value, wherein the preset pressure rate is larger than the original pressure rate.

In a second aspect, an embodiment of the present invention further provides a vehicle start control device, including:

the state information acquisition module is used for acquiring the current state information of the vehicle;

the starting mode detection module is used for detecting whether the vehicle is in a pure electric starting mode currently or not based on the current state information;

The closed-loop control module is used for determining a target rotating speed based on the current accelerator pedal opening degree if the motor is in a pure electric starting mode, and requesting the target rotating speed of the motor so as to enable the motor to perform closed-loop control based on the target rotating speed;

the open-loop control module is used for acquiring the current output torque of the motor and controlling the clutch to perform open-loop control based on the current output torque;

the clutch pressure control module is used for determining a current rotating speed difference value between the current rotating speed of the motor and the current rotating speed of the clutch, and carrying out pressurization treatment on the clutch based on a preset pressure rate when the current rotating speed difference value is smaller than a first preset difference value, wherein the preset pressure rate is larger than the original pressure rate.

In a third aspect, an embodiment of the present invention further provides an electronic device, including:

at least one processor;

and a memory communicatively coupled to the at least one processor;

wherein the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform a vehicle launch control method as provided by any embodiment of the present invention.

In a fourth aspect, an embodiment of the present invention further provides a computer readable storage medium, where the computer readable storage medium stores computer instructions, where the computer instructions are configured to cause a processor to execute the method for controlling vehicle start provided by any embodiment of the present invention.

According to the technical scheme, whether the vehicle is in a pure electric starting mode currently or not is detected based on the current state information by acquiring the current state information of the vehicle; if the motor is in the pure electric starting mode, determining a target rotating speed based on the current opening of the accelerator pedal, and requesting the target rotating speed of the motor so as to enable the motor to perform closed-loop control based on the target rotating speed, so that the rotating speed of the motor is controlled only through the request, and the motor is not required to be controlled by combining a clutch. The clutch is controlled to carry out open-loop control based on the current output torque of the motor, so that the clutch only needs to transmit the current output torque of the motor, the problems of rotational speed fluctuation, rotational speed drag-down and starting impact generated by the clutch for controlling the rotational speed of the motor in the traditional vehicle starting are avoided, when the current rotational speed difference between the current rotational speed of the motor and the current rotational speed of the clutch is smaller than a first preset difference value, the clutch is subjected to pressure treatment based on a preset pressure rate, the clutch pressure is rapidly improved, the rotational speed of the motor and the rotational speed of the clutch are rapidly synchronized, rapid and smooth starting control of the vehicle is realized, the control precision of the clutch is improved, and the driving performance of the vehicle is further improved.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a flowchart of a vehicle start control method according to a first embodiment of the present invention;

FIG. 2 is an architecture diagram of a vehicle in accordance with an embodiment of the present invention;

fig. 3 is an exemplary diagram of a vehicle start control process according to a first aspect of the present invention;

fig. 4 is a flowchart of a vehicle start control method according to a second embodiment of the present invention;

fig. 5 is a schematic structural view of a vehicle start control device according to a third embodiment of the present invention;

Fig. 6 is a schematic structural diagram of an electronic device implementing a vehicle start control method according to an embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "target," "current," and the like in the description and claims of the present invention and the above-described drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1

Fig. 1 is a flowchart of a vehicle start control method according to an embodiment of the present invention, where the embodiment is applicable to a situation where a hybrid vehicle or a new energy vehicle is started and controlled in an electric-only mode. For example, fig. 2 shows an architecture diagram of a vehicle, as shown in fig. 2, the vehicle includes: the device comprises an engine, a driving clutch, a motor, a combining clutch, a transmission, a main reducer, wheels, an engine control unit, a motor control unit, a transmission control unit and a whole vehicle control unit. The vehicle control system comprises an engine control unit, a motor control unit, a transmission, a gear control unit, a whole vehicle control unit and a control unit, wherein the engine control unit is used for controlling the engine rotating speed after starting, the motor control unit is used for controlling the motor rotating speed, the transmission is used for adjusting the gear, and the whole vehicle control unit is used for coordinating each control unit to macroscopically control the vehicle.

As shown in fig. 1, the method may be performed by a vehicle launch control, which may be implemented in hardware and/or software, that may be configured in an electronic device, such as a controller in a hybrid vehicle or a new energy vehicle. As shown in fig. 1, the method specifically includes the following steps:

s110, acquiring current state information of the vehicle.

The current state information may be information describing a current vehicle running state. For example, the current state information may be information including, but not limited to; current vehicle mode, current accelerator pedal opening, current brake pedal opening. It should be noted that the vehicle mode may be an electric-only mode and a non-electric-only mode. The electric-only mode may refer to using the electric machine as power for running the vehicle, among other things. The non-electric-only mode may refer to using the engine as power for vehicle operation.

Specifically, current state information of the vehicle, such as a current vehicle mode, a current accelerator pedal opening, and a current brake pedal opening, may be acquired in real time or periodically. The current vehicle mode can be acquired by the whole vehicle controller. The current accelerator pedal opening and the current brake pedal opening can be obtained by the whole vehicle controller, and can be obtained through an accelerator pedal opening sensor and a brake pedal opening sensor respectively.

For example, the vehicle controller obtains that the current vehicle mode is the electric only mode, the current accelerator pedal opening is 0, and the current brake pedal opening is 5%.

And S120, detecting whether the vehicle is in the pure electric starting mode currently or not based on the current state information.

The electric-only start mode may refer to a mode in which the motor output is used as a power source to start.

Specifically, the vehicle controller detects whether the current vehicle is in a pure electric starting mode in which the motor output is used as a power source for starting according to the current state information of the vehicle.

For example, if the current vehicle mode is an electric-only mode, the current brake pedal opening is 0, and the current accelerator pedal opening is greater than a preset opening, it is determined that the vehicle is currently in the electric-only starting mode.

The preset opening degree may be a preset minimum value of the opening degree of the accelerator pedal when the vehicle starts. For example, the preset opening degree may be set to 2%.

For example, if the current vehicle mode is an electric-only mode, the current brake pedal opening is 0, and the current accelerator pedal opening is 5% greater than the preset opening by 2%, then it is determined that the vehicle is currently in the electric-only start mode. As shown in fig. 2, the vehicle is in the electric-only mode, the brake pedal opening is reduced, and the accelerator pedal opening is increased, and at this time, the vehicle is in the electric-only start mode. If the current vehicle mode is a non-electric only mode, the current brake pedal opening is 0, and the current accelerator pedal opening is 5% greater than the preset opening by 2%, it can be determined that the vehicle is in the non-electric only starting mode.

And S130, if the motor is in the pure electric starting mode, determining a target rotating speed based on the current opening degree of an accelerator pedal, and requesting the target rotating speed of the motor so as to enable the motor to perform closed-loop control based on the target rotating speed.

The target rotation speed may refer to a motor rotation speed that the motor needs to reach under the current accelerator pedal opening. In the range of the maximum capacity of the motor, the motor rotation speed generally increases with an increase in the accelerator pedal opening. The closed-loop control may be a control mode in which the system can detect the output result of the control and feed back the output result to the input end, thereby adjusting the input amount.

Specifically, if the starting mode of the current vehicle is the pure electric starting mode, the whole vehicle controller can determine the target rotating speed corresponding to the current accelerator pedal opening based on the corresponding relation between the preset accelerator pedal opening and the target rotating speed of the motor, and send a request of the target rotating speed to the motor, so that the motor adjusts the current rotating speed of the motor based on the target rotating speed and the current rotating speed of the motor, and the rotating speed of the motor reaches the target rotating speed, thereby realizing closed-loop control of the rotating speed of the motor in a mode of requesting the rotating speed without participation of a clutch.

For example, when the current vehicle starting mode is the electric-only starting mode, the current accelerator pedal opening is 10%, the corresponding motor rotation speed request is 1000 rotations per minute, the motor rotation speed request is sent to the motor, and the motor performs closed-loop control on the motor rotation speed based on 1000 rotations per minute. As shown in fig. 3, a corresponding target rotation speed is determined based on the current opening of the accelerator pedal, and a request of the target rotation speed is made to the motor, and the current rotation speed of the motor is adjusted based on the target rotation speed pair and the current rotation speed of the motor, so that the current rotation speed of the motor reaches the target rotation speed. In the process, the clutch is not needed to participate in the regulation of the motor rotating speed, the clutch pressure cannot repeatedly fluctuate due to the control of the motor rotating speed, and impact shrugging or impact cannot be easily generated.

The correspondence between the accelerator pedal opening and the target rotation speed of the motor is shown in table 1.

TABLE 1 correspondence between accelerator pedal opening and motor target speed

Throttle pedal opening (%)	10	20	30	40	60	80	100
								Target rotation speed (r/min)	1000	1200	1400	1600	1800	2000	2200

In this embodiment, the motor rotation speed is controlled by sending a motor rotation speed request, so that the motor itself controls the motor rotation speed without clutch control, thereby avoiding the clutch engagement pressure fluctuation problem generated by clutch control of the motor rotation speed and the hysteresis problem of clutch hydraulic control, realizing advanced active control and obviously improving the starting smoothness and dynamic performance of the new energy automobile.

For example, if the current vehicle starting mode is a non-electric-only starting mode, the engine speed is adjusted to the calculated vehicle starting demand speed according to the vehicle starting demand, the clutch coupling torque is determined according to the engine output torque, and the opening position of the clutch is controlled according to the clutch coupling torque to control the vehicle starting. The combined torque is torque which is generated by combining the clutch and the output end of the engine and is used for driving the vehicle to start.

And S140, acquiring the current output torque of the motor, and controlling the clutch to perform open-loop control based on the current output torque.

The open loop control may be a control mode in which an output result is not fed back to the input end, and the input end does not adjust input end data according to the output result.

Specifically, the vehicle controller obtains the current output torque of the motor through the motor torque sensor, and controls the clutch to carry out open-loop control on the rotational speed of the clutch based on the current output torque.

For example, "control clutch to open loop control clutch speed based on current output torque" in S140 may include: the control clutch directly transmits the current output torque.

Specifically, the whole vehicle controller controls the clutch to directly control the clutch combination according to the torque output of the motor. In this embodiment, since the rotational speed request has been made to the motor, the clutch may directly transmit the output torque of the motor. The clutch does not carry out closed-loop control of the motor rotation speed, so that the clutch pressure does not generate repeated fluctuation, and impact shrugging or impact is not easy to generate.

S150, determining a current rotating speed difference value between the current rotating speed of the motor and the current rotating speed of the clutch, and carrying out pressurization treatment on the clutch based on a preset pressure rate when the current rotating speed difference value is smaller than a first preset difference value, wherein the preset pressure rate is larger than the original pressure rate.

The current rotational speed difference may refer to an absolute value of a difference of the current rotational speed of the motor minus the current rotational speed of the clutch. The first preset difference may be a preset maximum rotation speed difference that does not require pressurization. For example, the first preset difference may be Δn1. The pressure rate may refer to the value of the change in clutch pressure per unit time. For example, the pressure rate may be ΔP1/s. The original pressure rate may refer to the amount of change in the original pressure rate of the clutch in the original control mode.

Specifically, the transmission controller determines that the current rotational speed of the motor is greater than the current rotational speed difference of the current rotational speed of the clutch, and when the current rotational speed difference is smaller than a first preset difference, performs pressurization processing on the clutch based on a preset pressure rate greater than the original pressure rate until the current rotational speed difference is 0, so that the clutch pressure is changed to the target pressure more quickly, and rotational speed synchronization of the motor and the clutch is realized more quickly.

For example, as shown in FIG. 3, as launch progresses, the clutch speed increases, and as the clutch speed falls below the motor speed in the Δn1 region, the clutch pressure increases at a faster rate (e.g., ΔP1/s). It should be noted that, in the whole vehicle starting process, the clutch may be pressurized according to the preset pressure rate until the current rotation speed of the motor is equal to the current rotation speed of the clutch, so as to achieve rapid synchronization of the rotation speeds.

Based on the technical scheme, the method further comprises the following steps: when the current rotating speed difference value is smaller than a second preset difference value, directly increasing preset pressure to the clutch, wherein the second preset difference value is smaller than the first preset difference value;

the second preset difference may be a preset minimum rotation speed difference that needs further rapid pressurization. For example, the second preset difference may be Δn2. The preset pressure may refer to a preset one-time increase pressure value. For example, the preset pressure may be Δp.

Specifically, the transmission controller gradually decreases the current rotational speed difference during the pressurization process of the clutch based on the preset pressure rate. When the current rotational speed difference is smaller than the second preset difference, the preset pressure can be increased at one time on the basis of the current clutch pressure, so that the clutch pressure is increased to the target pressure more quickly, and rotational speed synchronization of the motor and the clutch is realized more quickly.

For example, as shown in fig. 3, as the start proceeds, when the current rotational speed difference between the current rotational speed of the motor and the current rotational speed of the clutch is smaller than Δn2, the clutch pressure may directly increase by the preset pressure Δp. Thereby enabling the clutch pressure to change to the target pressure more quickly and achieving the rotational speed synchronization of the motor and the clutch more quickly.

Based on the technical scheme, the method further comprises the following steps: and when the current rotating speed difference value is zero, determining that starting is finished, stopping the request of the target rotating speed of the motor, and controlling the clutch to carry out closed-loop control on the rotating speed of the clutch.

Specifically, when the current rotational speed difference is zero, determining that starting is finished, stopping the request for the target rotational speed of the motor, and controlling the clutch to perform closed-loop control on the rotational speed of the clutch. At this time, the motor rotation speed can not meet the rotation speed requirement after the vehicle starts, and when the motor rotation speed and the clutch rotation speed are completely synchronous, the closed-loop control of the clutch can be adopted to more smoothly finish the starting, and the vehicle enters the normal running.

For example, as shown in FIG. 3, where the motor speed and clutch speed are fully synchronized, the launch process is complete, the transmission controller no longer sends a speed request to the motor, while the clutch control is switched from open loop control to closed loop control.

Example two

Fig. 4 is a flowchart of a vehicle start control method according to a second embodiment of the present invention, where the step of "open-loop control of the control clutch based on the current output torque" is optimized based on the above embodiments. Wherein the explanation of the same or corresponding terms as those of the above embodiments is not repeated herein.

Referring to fig. 4, another vehicle starting control method provided in this embodiment specifically includes the following steps:

s210, acquiring current state information of the vehicle.

S220, detecting whether the vehicle is in the pure electric starting mode currently or not based on the current state information.

And S230, if the motor is in the pure electric starting mode, determining a target rotating speed based on the current opening degree of an accelerator pedal, and requesting the target rotating speed of the motor so as to enable the motor to perform closed-loop control based on the target rotating speed.

S240, acquiring the current output torque of the motor.

Illustratively, the current motor output torque is shown in table 2 below, which is a table of output torques at different throttle openings corresponding to vehicle speeds.

Table 2 output torque correspondence at accelerator opening versus vehicle speed

S250, correcting the current output torque based on the detected current running gradient information to obtain corrected target output torque.

The current driving gradient information may refer to an angle formed by a current driving road surface of the vehicle and a ground plane. The target output torque may refer to a motor output torque required for starting the vehicle in a road surface environment of a current running gradient.

Specifically, the whole vehicle controller obtains the current output torque of the motor, corrects the current output torque according to the current running gradient information based on the detected current running gradient information of the vehicle, and takes the corrected current output torque as the target output torque. The vehicle can reach the starting effect of a flat road on a sloping road.

For example, S240 may include: determining a current correction coefficient corresponding to the current running gradient information based on the detected current running gradient information and a corresponding relation between preset running gradient information and the correction coefficient; and correcting the current output torque based on the current correction coefficient, and determining the corrected target output torque.

The correction coefficient corresponding to each piece of driving gradient information is larger than 1, the driving gradient information is positively correlated with the correction coefficient, and the larger the driving gradient is, the larger the corresponding correction coefficient value is. The correction factor may refer to the magnification factor of the current output torque.

Specifically, the vehicle controller multiplies the current output torque by the correction coefficient based on the detected current running gradient information and the corresponding relation between the preset running gradient information and the correction coefficient, and takes the multiplied result as the target output torque.

For example, the vehicle controller detects that the current driving gradient information is 3 °, the corresponding correction coefficient is 1.1, amplifies the current output torque by 1.1 times, and takes the amplified current output torque as the target output torque. The correspondence between the running gradient information and the correction coefficient is shown in table 3 below.

TABLE 3 gradient angle and correction coefficient correspondence

Slope angle	ɑ＝3°	ɑ＝5°	ɑ＝7°	……
					Correction coefficient	1.1	1.15	1.2	……

S250, controlling the clutch to perform open-loop control based on the target output torque.

Specifically, the vehicle controller controls the clutch to continuously increase clutch pressure according to the target output torque, so that the rotational speed of the clutch is increased, and the output torque of the clutch is increased. That is, the clutch only needs to adjust its own output torque according to the target output torque, thereby improving the control accuracy of the clutch.

S260, determining a current rotating speed difference value between the current rotating speed of the motor and the current rotating speed of the clutch, and carrying out pressurization processing on the clutch based on a preset pressure rate when the current rotating speed difference value is smaller than a first preset difference value, wherein the preset pressure rate is larger than the original pressure rate.

According to the technical scheme provided by the embodiment of the invention, the current output torque is corrected based on the detected current running gradient information to obtain the corrected target output torque, and the clutch is controlled to perform open-loop control based on the target output torque, so that the vehicle can achieve a smooth road starting effect when starting on a sloping road, the starting control smoothness of the vehicle is further improved, and the driving performance of the vehicle is improved.

Example III

Fig. 5 is a schematic structural diagram of a vehicle start control device according to a third embodiment of the present invention. As shown in fig. 5, the apparatus specifically includes: a status information acquisition module 310, a launch mode detection module 320, a closed loop control module 330, an open loop control module 340, and a clutch pressure control module 350.

The state information obtaining module 310 is configured to obtain current state information of the vehicle;

a starting mode detection module 320, configured to detect whether the vehicle is currently in the electric-only starting mode based on the current state information;

the closed-loop control module 330 is configured to determine a target rotation speed based on a current accelerator pedal opening if the motor is in a pure electric starting mode, and request a target rotation speed for a motor, so that the motor performs closed-loop control based on the target rotation speed;

the open-loop control module 340 is configured to obtain a current output torque of the motor, and control the clutch to perform open-loop control based on the current output torque;

the clutch pressure control module 350 is configured to determine a current rotational speed difference between a current rotational speed of the motor and a current rotational speed of the clutch, and perform pressure treatment on the clutch based on a preset pressure rate when the current rotational speed difference is less than a first preset difference, where the preset pressure rate is greater than an original pressure rate.

According to the technical scheme, whether the vehicle is in a pure electric starting mode or not is detected based on current state information by acquiring the current state information of the vehicle; if the motor is in the pure electric starting mode, determining a target rotating speed based on the current opening of the accelerator pedal, and requesting the target rotating speed of the motor so as to enable the motor to perform closed-loop control based on the target rotating speed, so that the rotating speed of the motor is controlled only through the request, and the motor is not required to be controlled by combining a clutch. The clutch is controlled to carry out open-loop control based on the current output torque of the motor, so that the clutch only needs to transmit the current output torque of the motor, the problems of rotational speed fluctuation, rotational speed drag-down and starting impact generated by the clutch for controlling the rotational speed of the motor in the traditional vehicle starting are avoided, when the current rotational speed difference between the current rotational speed of the motor and the current rotational speed of the clutch is smaller than a first preset difference value, the clutch is subjected to pressure treatment based on a preset pressure rate, the clutch pressure is rapidly improved, the rotational speed of the motor and the rotational speed of the clutch are rapidly synchronized, rapid and smooth starting control of the vehicle is realized, the control precision of the clutch is improved, and the driving performance of the vehicle is further improved.

Optionally, the current state information includes: current vehicle mode, current brake pedal opening, and current accelerator pedal opening.

Optionally, the starting mode detection module 320 includes:

and if the current vehicle mode is the pure electric mode, the current brake pedal opening is 0, and the current accelerator pedal opening is larger than the preset opening, determining that the vehicle is in the pure electric starting mode currently.

Optionally, the open loop control module 340 includes:

a torque transfer unit for controlling the clutch to directly transfer the current output torque;

the torque correction unit is used for correcting the current output torque based on the detected current running gradient information to obtain corrected target output torque;

and the open-loop control unit is used for controlling the clutch to perform open-loop control based on the target output torque.

Optionally, the torque correction unit includes:

the correction coefficient determining subunit is used for determining a current correction coefficient corresponding to the current running gradient information based on the detected current running gradient information and the corresponding relation between the preset running gradient information and the correction coefficient, wherein the correction coefficient corresponding to each running gradient information is larger than 1, and the running gradient information and the correction coefficient are positively correlated;

And the target output torque determining subunit corrects the current output torque based on the current correction coefficient and determines the corrected target output torque.

Optionally, the apparatus further comprises:

and the clutch pressure control unit is used for directly increasing preset pressure to the clutch when the current rotating speed difference value is smaller than a second preset difference value, wherein the second preset difference value is smaller than the first preset difference value.

Optionally, the apparatus further comprises:

and the closed-loop control unit is used for determining starting end when the current rotating speed difference value is zero, stopping the request of the target rotating speed of the motor and controlling the clutch to carry out closed-loop control on the rotating speed of the motor.

The music playing device provided by the embodiment of the invention can execute the music playing method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.

Fig. 6 shows a schematic diagram of the structure of an electronic device 12 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as desktop computers, workstations, servers, mainframes, and other suitable computers. The electronic device may also represent various forms of mobile equipment, such as personal digital processing, smart phones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing equipment. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.

As shown in fig. 6, the electronic device 12 is in the form of a general purpose computing device. Components of the electronic device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, a bus 18 that connects the various system components, including the system memory 28 and the processing units 16.

Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, and a local bus using any of a variety of bus architectures. By way of example, and not limitation, such architectures include Industry Standard Architecture (ISA) bus, micro channel architecture (MAC) bus, enhanced ISA bus, video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.

Electronic device 12 typically includes a variety of computer system readable media. Such media can be any available media that is accessible by electronic device 12 and includes both volatile and nonvolatile media, removable and non-removable media.

The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 30 and/or cache memory 32. The electronic device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from or write to non-removable, nonvolatile magnetic media (not shown in FIG. 6, commonly referred to as a "hard disk drive"). Although not shown in fig. 6, a magnetic disk drive for reading from and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In such cases, each drive may be coupled to bus 18 through one or more data medium interfaces. The system memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of the embodiments of the invention.

A program/utility 40 having a set (at least one) of program modules 42 may be stored in, for example, system memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules 42 generally perform the functions and/or methods of the embodiments described herein.

The electronic device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), one or more devices that enable a user to interact with the electronic device 12, and/or any devices (e.g., network card, modem, etc.) that enable the electronic device 12 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 22. Also, the electronic device 12 may 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 a network adapter 20. As shown, the network adapter 20 communicates with other modules of the electronic device 12 over the bus 18. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with electronic device 12, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.

The processing unit 16 executes various functional applications and data processing by running programs stored in the system memory 28, for example, implementing a vehicle start control method step provided in the present embodiment, the method includes:

acquiring current state information of a vehicle;

Of course, those skilled in the art will understand that the processor may also implement the technical solution of the vehicle start control method provided by any embodiment of the present invention.

The present embodiment provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of a vehicle start control method as provided by any embodiment of the present invention, the method comprising:

acquiring current state information of a vehicle;

The computer storage media of embodiments of the invention may take the form of any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium may be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: 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 this document, 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.

The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. 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: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations of the present invention may be written in one or more programming languages, including 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).

It will be appreciated by those of ordinary skill in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be centralized on a single computing device, or distributed over a network of computing devices, or they may alternatively be implemented in program code executable by a computer device, such that they are stored in a memory device and executed by the computing device, or they may be separately fabricated as individual integrated circuit modules, or multiple modules or steps within them may be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims

1. A vehicle start control method, characterized by comprising:

acquiring current state information of a vehicle;

2. The method of claim 1, wherein the current state information comprises: current vehicle mode, current brake pedal opening and current accelerator pedal opening;

the detecting whether the vehicle is currently in the electric-only starting mode based on the current state information comprises:

3. The method of claim 1, wherein the controlling the clutch for open loop control based on the current output torque comprises:

the control clutch directly transmits the current output torque.

4. The method of claim 1, wherein the controlling the clutch for open loop control based on the current output torque comprises:

correcting the current output torque based on the detected current running gradient information to obtain corrected target output torque;

the control clutch performs open-loop control based on the target output torque.

5. The method of claim 4, wherein correcting the current output torque based on the detected current travel grade information to obtain a corrected target output torque comprises:

determining a current correction coefficient corresponding to the current running gradient information based on the detected current running gradient information and a corresponding relation between preset running gradient information and the correction coefficient, wherein the correction coefficient corresponding to each running gradient information is larger than 1, and the running gradient information and the correction coefficient are positively correlated;

And correcting the current output torque based on the current correction coefficient, and determining the corrected target output torque.

6. The method according to claim 1, wherein the method further comprises:

and when the current rotating speed difference value is smaller than a second preset difference value, directly increasing preset pressure to the clutch, wherein the second preset difference value is smaller than the first preset difference value.

7. The method according to any one of claims 1-6, further comprising:

and when the current rotating speed difference value is zero, determining that starting is finished, stopping the request of the target rotating speed of the motor, and controlling the clutch to carry out closed-loop control on the rotating speed of the clutch.

8. A vehicle start control device, characterized by comprising:

9. An electronic device, the electronic device comprising:

at least one processor;

and a memory communicatively coupled to the at least one processor;

wherein the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the vehicle launch control method of any one of claims 1-7.

10. A computer readable storage medium storing computer instructions for causing a processor to implement the vehicle launch control method of any one of claims 1-7 when executed.