阅读说明：本技术 一种自动挡汽车换挡方法、装置、设备和介质 (Gear shifting method, device, equipment and medium for automatic transmission automobile ) 是由 陈卫方 王伟 杜佳正 石月 黄子明 于 2021-07-16 设计创作，主要内容包括：本发明公开了一种自动变速汽车换挡方法、装置、设备和介质,包括：获取自动变速汽车的当前挡位,并判断自动变速汽车是否有升挡需求；若有升挡需求,则获取自动变速汽车的俯仰角信号；确定俯仰角信号对应的第一目标挡位；若当前挡位大于等于第一目标挡位,则禁止自动变速汽车升挡。本申请先确定自动变速汽车是否有升挡需求,再考虑自动变速汽车当前的俯仰角信号,即考虑汽车当前是否处于上坡过程中,根据当前的俯仰角信号确定第一目标挡位,确定第一目标挡位与当前挡位之间的关系,若当前挡位大于等于第一目标挡位,则说明需要保证汽车在当前的坡度上的动力性,不允许升挡操作,提高了换挡准确性。(The invention discloses a gear shifting method, a gear shifting device, gear shifting equipment and a gear shifting medium for an automatic speed changing automobile, wherein the gear shifting method comprises the following steps of: acquiring the current gear of the automatic speed changing automobile, and judging whether the automatic speed changing automobile has a gear-up requirement or not; if the gear-up requirement exists, acquiring a pitch angle signal of the automatic speed-changing automobile; determining a first target gear corresponding to the pitch angle signal; and if the current gear is larger than or equal to the first target gear, forbidding the automatic speed change automobile to upshift. According to the method and the device, whether the automatic speed changing automobile has a gear-up requirement is determined firstly, then the current pitch angle signal of the automatic speed changing automobile is considered, namely whether the automobile is in the process of ascending, the first target gear is determined according to the current pitch angle signal, the relation between the first target gear and the current gear is determined, if the current gear is larger than or equal to the first target gear, the fact that the dynamic property of the automobile on the current slope needs to be guaranteed is shown, the gear-up operation is not allowed, and the gear-shifting accuracy is improved.)

1. A method of shifting gears in an automatic transmission vehicle, the method comprising:

acquiring the current gear of the automatic speed changing automobile, and judging whether the automatic speed changing automobile has a gear-up requirement or not;

if the gear-up requirement exists, acquiring a pitch angle signal of the automatic speed changing automobile;

determining a first target gear corresponding to the pitch angle signal;

and if the current gear is larger than or equal to the first target gear, forbidding the automatic transmission automobile to upshift.

2. The method of claim 1, wherein if the current gear is less than the first target gear, the method further comprises:

allowing the automated transmission vehicle to upshift.

3. The method of claim 1, wherein if the current gear is greater than or equal to the first target gear and the difference between the current gear and the first target gear is greater than or equal to 2, the method further comprises:

and controlling the automatic transmission automobile to downshift to the first target gear.

4. The method of claim 1, wherein said determining if an upshift is required for said automatic transmission vehicle comprises:

acquiring the accelerator opening variation and the vehicle speed variation of the automatic speed changing vehicle within a preset time;

determining a second target gear of the automatic variable speed vehicle at the end time of the preset time according to the accelerator opening variation and the vehicle speed variation;

and judging whether the automatic speed change automobile has a gear-up demand at the end moment of the preset time or not according to the current gear and the second target gear.

5. The method of claim 4, wherein said determining whether the automatic transmission vehicle has an upshift requirement at the end of the preset time based on the current gear and the second target gear comprises:

if the current gear is larger than or equal to the second target gear, determining that the automatic transmission automobile has no gear-up requirement at the end time of the preset time;

and if the current gear is smaller than the second target gear, determining that the automatic transmission automobile has a gear-up demand at the end time of the preset time.

6. An automatic transmission shifting apparatus for a vehicle, the apparatus comprising:

the judging module is used for acquiring the current gear of the automatic speed changing automobile and judging whether the automatic speed changing automobile has a gear-up requirement or not;

the pitch angle acquisition module is used for acquiring a pitch angle signal of the automatic speed changing automobile if the gear-up requirement exists;

the target gear determining module is used for determining a first target gear corresponding to the pitch angle signal;

and the gear-up forbidding module is used for forbidding the automatic transmission automobile to gear up if the current gear is larger than or equal to the first target gear.

7. The apparatus of claim 6, wherein the apparatus further comprises:

and the gear-up allowing module is used for allowing the automatic transmission automobile to be in gear-up if the current gear is smaller than the first target gear.

8. The apparatus of claim 6, wherein the apparatus further comprises:

and the downshift module is used for controlling the automatic transmission automobile to downshift to the first target gear if the current gear is larger than or equal to the first target gear and the difference between the current gear and the first target gear is larger than or equal to 2.

9. An electronic device, comprising:

a processor;

a memory for storing the processor-executable instructions;

wherein the processor is configured to execute to implement an automatic transmission vehicle shifting method as claimed in any one of claims 1 to 5.

10. A non-transitory computer readable storage medium having instructions which, when executed by a processor of an electronic device, enable the electronic device to perform a method of implementing an automatic transmission vehicle gear shift as claimed in any one of claims 1 to 5.

Technical Field

The invention relates to the technical field of automobiles, in particular to a gear shifting method, a gear shifting device, gear shifting equipment and a gear shifting medium for an automatic speed changing automobile.

Background

With the development of the technical level of automobiles, automatic speed changing automobiles become more and more mainstream in the automobile market, and people generally prefer the new product. The automatic transmission automobile replaces manual clutch and manual gear shifting with an automatic technology, so that the driving difficulty is reduced, and the control is simpler and more convenient.

However, when the automobile decelerates on an uphill road section, the driver releases the accelerator pedal, the speed of the automobile cannot immediately drop, and the automatic gearbox control unit shifts up by default according to the pedal position; when a driver steps on an accelerator pedal to accelerate again, the gear reduction amplitude of the automatic gearbox control unit is limited, the automobile is in a higher gear, the power required by the current working condition cannot be guaranteed, and the automobile is slowly accelerated and even cannot advance. Therefore, the problem that the upslope gear shifting of the automatic speed changing automobile is inaccurate exists in the related art.

Disclosure of Invention

The embodiment of the application provides the gear shifting method, the gear shifting device, the gear shifting equipment and the medium for the automatic speed changing automobile, solves the technical problem that the gear shifting of the automatic speed changing automobile on the uphill slope is inaccurate in the prior art, and achieves the technical effect of improving the accuracy of the gear shifting of the automatic speed changing automobile on the uphill slope.

In a first aspect, the present application provides a method of shifting gears in an automatic transmission vehicle, the method comprising:

acquiring the current gear of the automatic speed changing automobile, and judging whether the automatic speed changing automobile has a gear-up requirement or not;

if the gear-up requirement exists, acquiring a pitch angle signal of the automatic speed-changing automobile;

determining a first target gear corresponding to the pitch angle signal;

and if the current gear is larger than or equal to the first target gear, forbidding the automatic speed change automobile to upshift.

Further, if the current gear is smaller than the first target gear, the method further includes:

allowing the automated transmission vehicle to upshift.

Further, if the current gear is greater than or equal to the first target gear, and the difference between the current gear and the first target gear is greater than or equal to 2, the method further includes:

and controlling the automatic speed changing automobile to downshift to the first target gear.

Further, judging whether the automatic transmission automobile has a gear-up demand or not comprises the following steps:

acquiring the accelerator opening variation and the vehicle speed variation of the automatic speed changing vehicle within a preset time;

determining a second target gear of the automatic speed changing automobile at the end moment of the preset time according to the accelerator opening variation and the vehicle speed variation;

and judging whether the automatic speed change automobile has a gear-up demand at the end moment of the preset time or not according to the current gear and the second target gear.

Further, according to current gear and second target gear, judge whether automatic transmission car has the demand of stepping up at the end moment of predetermineeing time, include:

if the current gear is larger than or equal to the second target gear, determining that the automatic transmission automobile has no gear-up requirement at the end moment of the preset time;

and if the current gear is smaller than the second target gear, determining that the automatic transmission automobile has a gear-up requirement at the end moment of the preset time.

In a second aspect, the present application provides an automatic transmission shifting apparatus for a vehicle, the apparatus comprising:

the judging module is used for acquiring the current gear of the automatic speed changing automobile and judging whether the automatic speed changing automobile has a gear-up requirement or not;

the pitch angle acquisition module is used for acquiring a pitch angle signal of the automatic speed changing automobile if the upshift requirement exists;

the target gear determining module is used for determining a first target gear corresponding to the pitch angle signal;

and the gear-up forbidding module is used for forbidding the automatic transmission automobile to gear up if the current gear is larger than or equal to the first target gear.

Further, the apparatus further comprises:

and the gear-up allowing module is used for allowing the automatic transmission automobile to be in gear up if the current gear is smaller than the first target gear.

Further, the apparatus further comprises:

and the downshift module is used for controlling the automatic transmission automobile to downshift to the first target gear if the current gear is larger than or equal to the first target gear and the difference between the current gear and the first target gear is larger than or equal to 2.

In a third aspect, the present application provides an electronic device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to execute to implement an automatic transmission vehicle shifting method.

In a fourth aspect, the present application provides a non-transitory computer readable storage medium having instructions that, when executed by a processor of an electronic device, enable the electronic device to perform a method of implementing an automatic transmission vehicle shift.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

whether the automatic speed changing automobile has the gear-up requirement is determined firstly, then the current pitch angle signal of the automatic speed changing automobile is considered, namely whether the automobile is in the process of ascending, the first target gear is determined according to the current pitch angle signal, the relation between the first target gear and the current gear is determined, if the current gear is larger than or equal to the first target gear, the situation that the dynamic property of the automobile on the current slope needs to be guaranteed is shown, the gear-up operation is not allowed, the gear-shifting accuracy is improved, the dynamic response of the automobile is faster and more sensitive, the ascending working condition is reduced, the switching times of the automobile gears are reduced, the abrasion of a transmission system is reduced, the gear-shifting vibration is reduced, the driving experience is improved, and the gear-shifting accuracy is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIGS. 1 and 2 are two parameter shift graphs;

FIG. 3 is a three parameter shift profile;

FIG. 4 is a flow chart of a method of shifting gears in an automatic transmission vehicle according to the present application;

FIG. 5 is a shift logic diagram for implementing a two parameter shift schedule in the related art;

FIG. 6 is a shift logic diagram for implementing a three parameter shift schedule according to the present application;

FIG. 7 is a schematic structural view of an automatic transmission shifting apparatus for a vehicle according to the present application;

fig. 8 is a schematic structural diagram of an electronic device provided in the present application.

Detailed Description

The embodiment of the application provides an automatic speed change automobile gear shifting method, and solves the technical problem that in the prior art, the automatic speed change automobile upslope gear shifting is inaccurate.

In order to solve the technical problems, the general idea of the embodiment of the application is as follows:

a method of shifting gears in an automatic transmission vehicle, the method comprising: acquiring the current gear of the automatic speed changing automobile, and judging whether the automatic speed changing automobile has a gear-up requirement or not; if the gear-up requirement exists, acquiring a pitch angle signal of the automatic speed-changing automobile; determining a first target gear corresponding to the pitch angle signal; and if the current gear is larger than or equal to the first target gear, forbidding the automatic speed change automobile to upshift.

Whether the automatic speed changing automobile has a gear-up requirement is determined firstly, then the current pitch angle signal of the automatic speed changing automobile is considered, namely whether the automobile is in the process of ascending, the first target gear is determined according to the current pitch angle signal, the relation between the first target gear and the current gear is determined, if the current gear is larger than or equal to the first target gear, the fact that the dynamic property of the automobile on the current gradient needs to be guaranteed is indicated, the gear-up operation is not allowed, the gear-shifting accuracy is improved, the dynamic response of the automobile is enabled to be faster and more sensitive, the ascending working condition is reduced, the switching times of the automobile gears are reduced, the abrasion of a transmission system is reduced, the gear-shifting vibration is reduced, the driving experience is improved, and the gear-shifting accuracy is improved.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The automatic speed change automobile does not need a driver to manually shift gears, and the automobile can automatically select a proper gear to run according to the running speed and the working condition. At present, a gear shifting rule widely adopted by an automatic speed changing automobile is a two-parameter gear shifting rule, and the most adopted form is the combination of the automobile speed and the accelerator opening. As shown in fig. 1, a shift schedule MAP (also referred to as a shift MAP). When the speed signal and the coordinate point of the opening degree of the accelerator cross the gear-up line or the gear-down line, a Transmission Control Unit (TCU) correspondingly controls the gear-up action or the gear-down action. As can be seen from fig. 1, under the same vehicle speed, there is a delay between the upshift curve and the downshift curve between two adjacent gears, i.e. the throttle opening values corresponding to the two curves are different. The delay between the two curves can prevent the vehicle from returning to the original gear again due to the vibration of an accelerator pedal or the slight reduction of the vehicle speed, thereby ensuring the stability of the gear shifting process, being beneficial to reducing the gear shifting circulation, preventing the accelerated wear of control system elements and reducing the riding comfort.

However, when the automatic transmission vehicle is in an uphill condition, the shift schedule cannot ensure that the vehicle is in an optimal state. The reason why the operating state of the automobile cannot be guaranteed by using the gear shifting rule is that, as shown in an AB line segment in fig. 2, when the automobile just starts to ascend a slope, the pedal depth of an accelerator pedal is the depth corresponding to the A point, and according to a gear shifting curve graph, when the pedal depth is large, a gear cannot be continuously lifted, or the difficulty of lifting is large. When the driver releases the accelerator pedal, the pedal depth reaches point B, and as can be seen from the figure, the depth of the accelerator pedal is reduced more and the vehicle speed is reduced less. When an operation curve formed by an actual vehicle speed signal and the accelerator opening of the vehicle crosses an upshift line or a downshift line, an upshift and a downshift action are performed. When the accelerator pedal is released, the segment AB formed by the pedal depth and the vehicle speed crosses four curves, and it is determined whether the shift position at point B is up or down, based on the actual shift position at point a, as shown in fig. 2. For example, when the actual gear at point a is 3 th gear, since the segment AB crosses the 3/4 th upshift line, the gear is shifted from 3 th gear to 4 th gear when the 3/4 th upshift line is crossed, and the gear at the point B is 4 th gear.

When the driver presses the accelerator pedal again, the vehicle speed may be reduced or kept at the current state (the vehicle speed may also be increased, but the increase range is very limited, and the vehicle speed may be considered to be hardly increased), and as the pedal depth is increased, the curve may cross the downshift line to trigger the downshift operation. For example, in the CD line of fig. 2, point C is the time when the driver starts to increase the accelerator pedal depth, point D is the time when the driver finishes increasing the accelerator pedal depth, and when point C is 4 th gear, when a 4-3 down gear line is crossed, the gear of the vehicle is shifted down from 4 th gear to 3 rd gear. It can be seen that the magnitude of the downshift is small, or even no downshift, relative to the state before uphill.

According to the theoretical knowledge of the automobile, when the automobile is in a low gear, the transmission ratio of the gearbox is large, the wheel torque of the automobile is large, the acceleration performance is good, and the dynamic performance is strong; when the automobile is in a high gear, the transmission of the gearbox is small, the torque of the wheel edge of the automobile is small at the moment, the power is weak, the speed of the automobile is high, and the economy is better. Vehicles need to balance power output and economy under different operating conditions.

When the automobile is on an uphill slope, the power is improved by gear down and reduced by gear up. According to the shift curve shown in fig. 2, the final result is that the automatic transmission vehicle is upshifted when ascending, and the downshifting amplitude is small when the accelerator pedal is depressed again, so that the vehicle state cannot be ensured to be in the optimum state, which means that the automatic transmission vehicle is not accurately shifted.

In order to solve the above technical problem, the following two solutions are provided in the related art.

[ one of means ]

By adopting a dynamic three-parameter gear shifting law diagram as shown in fig. 3, an acceleration parameter is introduced on the basis of the two parameters shown in fig. 1. The data of the acceleration can be acquired by a sensor, however, the cost of the acceleration sensor is high. The acceleration data can also be obtained by differentiating the vehicle speed signal, but the expected effect cannot be obtained due to many factors affecting the vehicle speed. In addition, the three-parameter gear shifting rule graph can increase the complexity of software and increase the workload and the working difficulty of the TCU.

[ second mode ] A

A sport driving mode and an economy driving mode are set for the automobile, and the two modes are manually switched through the driving requirement of a driver. However, manual switching may increase driving operations, leading to safety hazards; the automatic switching gear shifting can increase the compiling difficulty of a vehicle control software layer, and communication faults easily occur in the switching process, so that the gear shifting problem is caused. On the other hand, switching between two shift schedules increases the workload and the difficulty of the calibration work.

In order to solve the above technical problem, the present embodiment provides an automatic transmission vehicle gear shifting method as shown in fig. 4, including:

and step S41, acquiring the current gear of the automatic speed changing automobile and judging whether the automatic speed changing automobile has the gear-up requirement.

The current gear may be obtained from the automatic gearbox.

Whether the automatic speed changing automobile has the gear-up requirement or not can be judged by adopting the following modes:

and step S51, acquiring the accelerator opening variation and the vehicle speed variation of the automatic speed changing vehicle within the preset time.

And step S52, determining a second target gear of the automatic speed changing automobile at the end time of the preset time according to the accelerator opening variation and the vehicle speed variation.

And step S53, judging whether the automatic speed changing automobile has the gear-up requirement at the end moment of the preset time according to the current gear and the second target gear.

The method comprises the steps of obtaining the accelerator opening variation and the vehicle speed variation of the automatic variable speed vehicle within the preset time, obtaining the accelerator opening value and the vehicle speed at the starting moment of the preset time, then obtaining the accelerator opening value and the vehicle speed at the ending moment of the preset time, and determining the accelerator opening variation and the vehicle speed variation according to the accelerator opening value and the vehicle speed between the starting moment and the ending moment.

And determining a second target gear of the automatic transmission automobile at the end moment of the preset time according to the accelerator opening variation and the vehicle speed variation, wherein the second target gear can be directly obtained from a gear shifting MAP shown in FIG. 1, and the second target gear can also be calculated according to the actual working condition of the automobile. When the target gear shifting time is obtained from the gear shifting MAP shown in fig. 1, a change curve of the accelerator and the vehicle speed within the preset time can be determined in the gear shifting MAP according to the accelerator opening variation and the vehicle speed variation, a second target gear of the automatic transmission vehicle at the end time of the preset time can be determined according to the intersection relation between the change curve and the gear shifting line or the gear shifting line in the gear shifting MAP, and whether the automatic transmission vehicle has the gear shifting requirement at the end time of the preset time can be determined according to the relation between the current gear and the second target gear.

According to current gear and second target gear, judge whether automatic transmission car has the demand of stepping up, include:

and step S61, if the current gear is larger than or equal to the second target gear, determining that the automatic transmission automobile has no gear-up requirement at the end time of the preset time.

And step S62, if the current gear is smaller than the second target gear, determining that the automatic transmission automobile has a gear-up demand at the end of the preset time.

If the current gear is larger than or equal to the second target gear, the gear does not need to be changed or the gear needs to be reduced, and therefore the automatic transmission automobile does not need to be shifted up.

If the current gear is smaller than the second target gear, the gear needs to be lifted, and therefore the automatic transmission automobile has a gear-up requirement.

And step S42, if the gear-up requirement exists, acquiring a pitch angle signal of the automatic gear-shifting automobile.

When the automatic speed changing automobile needs to be shifted up, whether the current automobile is in the process of ascending a slope or not needs to be judged, and therefore a pitch angle signal of the automatic speed changing automobile needs to be acquired. The pitch angle signal can be detected by a slope sensor arranged on the automobile, the slope sensor is a special angle sensor, reflects the slope of the current automobile in real time, is specially used for measuring the pitch angle of the automobile body, and the installation position of the sensor is firm, and the surface where the measurement angle is located is parallel to the two sides of the automobile body. The influence of the acceleration of the automobile makes the measurement of the slope angle rather difficult, the sensor is required to have strong anti-interference capability to the acceleration, the measured slope angle changes in real time, and the slope sensor is required to have high precision and high sensitivity.

And step S43, determining a first target gear corresponding to the pitch angle signal.

The pitch angle reflects the gradient, and the first target gear can be determined according to the parameters of the automatic transmission vehicle, so that the pitch angle gear comparison table shown in table 1 can be obtained, and in table 1, the highest gear is used as the first target gear in the embodiment.

TABLE 1

Gradient (Angle)	Tangent value of slope	Highest gear
			5°-15°	0.0874-0.2679	5
15°-25°	0.2679-0.4663	4
			25°-35°	0.4663-0.7002	3
>35°	>0.7002	2

For example, when the gradient is 5 ° to 15 °, the highest gear is 5 th gear, and the first target gear is 5 th gear.

The pitch angle gear comparison table can be obtained by adopting the following modes:

the method comprises the steps of collecting the relation between the work of an engine and the kinetic energy of a vehicle when the vehicle runs on a normal flat road, and also collecting the relation between the work of the engine and the kinetic energy of the vehicle when the vehicle runs on different slopes. The working conditions that the work of the engine is consistent are selected and compared, the kinetic energy of the ramp vehicle on different slopes (namely the kinetic energy of the vehicle running on the ramp) is compared to obtain a first comparison result, the kinetic energy of the ramp vehicle can also be compared with the kinetic energy of the vehicle running on the level road to obtain a second comparison result, and the highest gear of the automobile is determined on the premise that the dynamic property of the vehicle is preferentially ensured according to the difference between the kinetic energies (namely the first comparison result and the second comparison result).

And step S44, if the current gear is larger than or equal to the first target gear, the automatic transmission automobile is prohibited from upshifting.

And if the current gear is larger than or equal to the first target gear, the automatic transmission automobile is not allowed to be shifted up, so that the situation that the dynamic property is reduced due to the fact that the gear of the automatic transmission automobile is increased can be avoided.

More specifically, if the current gear is larger than or equal to the first target gear and the difference between the current gear and the first target gear is larger than or equal to 2, the automatic transmission automobile is controlled to downshift to the first target gear. That is, if one or more gears have been separated between the current gear and the first target gear, the gear may be lowered to the first target gear, or of course, to a gear below the first target gear in order to enhance the power performance of the automatic transmission vehicle.

And step S45, if the current gear is smaller than the first target gear, the automatic transmission automobile is allowed to be shifted up.

If the current gear is smaller than the first target gear, the current power performance can meet the requirement of uphill slope, and the gear can be further increased to enhance the economic performance of the automatic speed change automobile.

In summary, in this embodiment, it is determined whether the automatic transmission vehicle has a gear-up demand depending on two parameter gear-shifting rules, and then a current pitch angle signal of the automatic transmission vehicle is considered, that is, whether the vehicle is currently on an uphill slope is considered, a first target gear is determined according to the current pitch angle signal, a relationship between the first target gear and the current gear is determined, and if the current gear is greater than or equal to the first target gear, it is indicated that the dynamic property of the vehicle on the current slope needs to be ensured, the gear-up operation is not allowed, so that the dynamic response of the vehicle is faster and more sensitive. In the working condition that has reduced the upslope, the switching number of times that the car kept off the position reduces the drive train wearing and tearing, reduces the vibrations of shifting, promotes the driving and experiences, has improved the accuracy of shifting.

If the current gear is smaller than the first target gear, the power performance of the automobile on the current gradient can meet the driving requirement of the automobile, and the gear-up operation can be realized, so that the power performance is reduced, and the economy is improved.

The cost of the slope sensor used in the embodiment is far lower than that of the acceleration sensor, and the slope sensor is more stable than the performance of the acceleration sensor, so that the manufacturing cost is reduced. Compared with acceleration data, the gradient data is more convenient to process, the complexity of software can be reduced, and the workload and the working difficulty of the TCU are reduced.

According to the method, the driving mode does not need to be manually switched by a driver, gear shifting is automatically realized only according to the pitch angle data, the pitch angle data are easy to process, the software development difficulty is low, communication faults cannot be caused, and the gear shifting operation can be quickly and accurately realized in the upslope process.

To better illustrate the differences between the present embodiment and the two parameter shift schedule in the related art, the following example is now proposed:

fig. 5 shows a shift logic diagram for implementing a two-parameter shift schedule in the related art. The position signal of the accelerator pedal is monitored by an accelerator pedal position sensor, the signal of the accelerator pedal position sensor is firstly transmitted into an Electronic Control Unit (ECU), and then is transmitted to a CAN bus through the ECU, a TCU receives the position signal of the accelerator pedal in a CAN line, and then combines the current vehicle speed signal, compares a gear shifting MAP (shown in figure 1), adjusts the gear shifting rule, the pipeline oil pressure, the gear shifting feeling and the Control of a torque converter locking clutch, and realizes the gear shifting.

In this embodiment, based on the two-parameter shift law, a gradient parameter (i.e., a pitch angle, a tangent value of an included angle between a slope surface and a horizontal plane) is introduced to correct a shift action, so as to implement a three-parameter shift logic, as shown in fig. 6. An upshift enabling flag is introduced outside the normal shift logic, and comprises a 1 state and a 0 state, wherein the 1 state is an allowable upshift and the 0 state is a non-allowable upshift. A-1 state may also be included, the-1 state being a downshift. The setting of the upshift allowable flag bit depends on the pitch angle shift table.

As shown in the above Table 1, the pitch angle gear comparison table is a gradient and gear comparison table, and can be calibrated and changed by engineers. The table lists the highest gear allowed at different grades. The gradient is between 5 ° and 15, the highest allowed gear is gear 5, the gradient is between 15 ° and 25, the highest allowed gear is gear 4, the gradient is between 25 ° and 35, the highest allowed gear is gear 3, the gradient is greater than 35, and the highest allowed gear is gear 2.

Under the current gradient, comparing the current gear with the highest gear in the table, and if the current gear is smaller than the highest gear, keeping the gear-up flag bit at 1; and if the current gear is larger than or equal to the highest gear, the gear-up mark position is 0.

In addition, according to the accelerator opening degree signal and the vehicle speed signal, the shift MAP shown in fig. 6 is queried to determine whether there is an upshift demand, and if there is an upshift demand, the upshift action flag is set to 1, and if there is no upshift demand, the upshift flag is set to 0.

When the gear-up action flag bit is 1 and the gear-up permission flag bit is 1, the gear can be up-shifted, and the automatic gearbox and related components complete the gear-up action; when the upshift operation flag is 1 and the upshift permission flag is 0, the upshift is not permitted. Therefore, the condition that power is insufficient due to excessive gear-up caused by the fact that a driver releases an accelerator on an uphill slope is avoided by correcting the gear-shifting action through the gradient signal.

Based on the same inventive concept, the present embodiment provides an automatic transmission vehicle shifting apparatus as shown in fig. 7, the apparatus comprising:

the judging module 71 is configured to obtain a current gear of the automatic transmission vehicle, and judge whether the automatic transmission vehicle has a gear-up demand;

the pitch angle acquisition module 72 is used for acquiring a pitch angle signal of the automatic transmission vehicle if the upshift requirement exists;

the target gear determining module 73 is configured to determine a first target gear corresponding to the pitch angle signal;

and an upshift prohibiting module 74 for prohibiting an upshift of the automatic transmission vehicle if the current gear is greater than or equal to the first target gear.

Further, the apparatus further comprises:

and the gear-up allowing module is used for allowing the automatic transmission automobile to be in gear up if the current gear is smaller than the first target gear.

Further, the apparatus further comprises:

and the downshift module is used for controlling the automatic transmission automobile to downshift to the first target gear if the current gear is larger than or equal to the first target gear and the difference between the current gear and the first target gear is larger than or equal to 2.

Further, the judging module 71 includes:

the acquisition submodule is used for acquiring the accelerator opening variation and the vehicle speed variation of the automatic speed change vehicle within preset time;

the determining submodule is used for determining a second target gear of the automatic speed changing automobile at the end moment of the preset time according to the accelerator opening variation and the vehicle speed variation;

and the judgment submodule is used for judging whether the automatic speed change automobile has a gear-up requirement at the end moment of the preset time according to the current gear and the second target gear.

Further, the judgment sub-module includes:

the first submodule is used for determining that the automatic transmission automobile has no gear-up requirement at the end time of the preset time if the current gear is larger than or equal to the second target gear;

and the second submodule is used for determining that the automatic speed changing automobile has the gear-up requirement at the end moment of the preset time if the current gear is smaller than the second target gear.

Based on the same inventive concept, the present embodiment provides an electronic device as shown in fig. 8, including:

a processor 81;

a memory 82 for storing instructions executable by the processor 81;

wherein the processor 81 is configured to execute to implement an automatic transmission vehicle gear shifting method.

Based on the same inventive concept, the present embodiment provides a non-transitory computer-readable storage medium, wherein instructions, when executed by a processor 81 of an electronic device, enable the electronic device to perform a method for implementing an automatic transmission vehicle shift.

Since the electronic device described in this embodiment is an electronic device used for implementing the method for processing information in this embodiment, a person skilled in the art can understand the specific implementation manner of the electronic device of this embodiment and various variations thereof based on the method for processing information described in this embodiment, and therefore, how to implement the method in this embodiment by the electronic device is not described in detail here. Electronic devices used by those skilled in the art to implement the method for processing information in the embodiments of the present application are all within the scope of the present application.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.