CN115823252A

CN115823252A - Target gear position determination method, device, equipment and storage medium

Info

Publication number: CN115823252A
Application number: CN202211569499.9A
Authority: CN
Inventors: 曾云鹏; 王明玉; 宁甲奎; 李长洲; 张荣辉
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-03-21

Abstract

The invention discloses a method, a device, equipment and a storage medium for determining a target gear position. The method comprises the following steps: when detecting that a lock valve of a target vehicle is located at a target gear position of a gear shifting lever, acquiring state information of the target vehicle; if the state information of the target vehicle meets a target preset condition, generating a target control instruction, and acquiring a target endpoint position corresponding to the target control instruction; and determining a target gear position according to a target endpoint position corresponding to the target control instruction. According to the technical scheme of the embodiment of the invention, the problem that the locking positions defined in the P gear and D gear actuators are deviated from the actual locking positions is solved, the actual locking positions of the P gear and D gear actuators are updated by determining the P gear and D gear positions, the time for calibrating the P gear and D gear positions is saved, the influence of deformation on a system is reduced, and the accuracy and the safety of the control system are improved.

Description

Target gear position determination method, device, equipment and storage medium

Technical Field

The invention relates to the technical field of automobiles, in particular to a method, a device, equipment and a storage medium for determining a target gear position.

Background

With the rapid development of society, the popularity of automatic transmission-equipped vehicles in the market has increased day by day. The automatic transmission vehicle generally does not need to be subjected to gear shifting operation in the driving process, so that the driving difficulty is reduced to a great extent, and the automatic transmission also has some problems to be solved along with convenient and comfortable operation performance.

A special P-range parking lock mechanism is generally provided inside the automatic transmission. The user operates the P gear to mechanically lock the output shaft part of the transmission so as to achieve the aim of fixing the vehicle. The P-gear parking locking mechanism mainly comprises two types of locking mechanisms, namely a mechanical boosting type locking mechanism and an electric boosting type locking mechanism. The mechanical power-assisted locking mechanism mainly controls the locking and the releasing of the P gear through a pull rope. The cable structure is adopted, the cable curvature arrangement needs to be considered, the requirement on the whole vehicle space is met, certain operating force needs to be provided, and the gear shifter occupies a certain space on the center console. The electric power-assisted locking mechanism realizes the locking and the releasing of the P gear mainly by controlling the driving motor to rotate forwards and backwards, and is characterized by saving space, no need of a stay cable, convenient connection, flexible structural layout, improved operating performance and reduced P gear releasing force of the ramp.

In each set of produced transmission assembly, the parking position and the unlocking position of the P-gear actuator cannot be consistent, and when the P-gear actuator is matched with the controller for the first time, the locking position needs to be calibrated. After long-time use, mechanical contact and collision between parts can cause deformation of the actuating mechanism, so that a locking position defined in the P-gear actuator and an actual locking position deviate, the integral system is adversely affected, and even functional failure can happen if the integral system is seriously affected.

Disclosure of Invention

The invention provides a method, a device, equipment and a storage medium for determining a target gear position, which are used for solving the problem that a locking position defined in a P gear actuator and a D gear actuator has deviation from an actual locking position and realizing updating of the actual locking positions of the P gear actuator and the D gear actuator by determining the P gear position and the D gear position.

According to an aspect of the present invention, there is provided a target gear position determination method, the method comprising:

when detecting that a lock valve of a target vehicle is located at a target gear position of a gear shifting lever, acquiring state information of the target vehicle;

if the state information of the target vehicle meets a target preset condition, generating a target control instruction, and acquiring a target endpoint position corresponding to the target control instruction;

and determining a target gear position according to a target endpoint position corresponding to the target control instruction.

According to another aspect of the present invention, there is provided a target gear position determination apparatus, comprising:

the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the state information of a target vehicle when detecting that a locking valve of the target vehicle is located at a target gear position of a gear shifting lever;

the processing module is used for generating a target control instruction if the state information of the target vehicle meets a target preset condition, and acquiring a target endpoint position corresponding to the target control instruction;

and the determining module is used for determining a target gear position according to the target endpoint position corresponding to the target control instruction.

According to another aspect of the present invention, there is provided an electronic apparatus 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, the computer program being executable by the at least one processor to enable the at least one processor to perform a method of determining a target gear position according to any of the embodiments of the present invention.

According to another aspect of the present invention, a computer-readable storage medium is provided, which stores computer instructions for causing a processor to implement the target gear position determination method according to any one of the embodiments of the present invention when the computer instructions are executed.

According to the technical scheme of the embodiment of the invention, when the fact that the locking valve of the target vehicle is located at the target gear position of the gear shifting lever is detected, the state information of the target vehicle is obtained, if the state information of the target vehicle meets the target preset condition, a target control instruction is generated, the target end point position corresponding to the target control instruction is obtained, and the target gear position is determined according to the target end point position corresponding to the target control instruction. According to the technical scheme of the embodiment of the invention, the problem that the locking positions defined in the P gear and D gear actuators are deviated from the actual locking positions is solved, the actual locking positions of the P gear and D gear actuators are updated by determining the P gear and D gear positions, the time for calibrating the P gear and D gear positions is saved, the influence of deformation on a system is reduced, and the accuracy and the safety of the control system are improved.

It should be understood that the statements in this section are not intended to identify key or critical features of the embodiments of the present invention, nor are they intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.

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 will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a flowchart of a target gear position determining method according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an integrated gear actuator according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a target gear position determining apparatus according to a second embodiment of the present invention;

fig. 4 is a schematic structural diagram of an electronic device implementing the target gear position determination method according to the embodiment of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "target," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or 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 one

Fig. 1 is a flowchart of a target gear position determining method according to an embodiment of the present invention, which may be applied to a target gear position determining situation, and the method may be implemented by a target gear position determining device, which may be implemented in a form of hardware and/or software, and the target gear position determining device may be integrated into any electronic device that provides a target gear position determining function. As shown in fig. 1, the method includes:

s101, when the fact that the latch valve of the target vehicle is located at the target gear position of the gear shifting lever is detected, state information of the target vehicle is obtained.

Fig. 2 is a schematic structural diagram of an integrated gear actuator according to an embodiment of the present invention. As shown in fig. 2, the integrated gear actuator mainly includes a latch valve 21, a shift lever 22, a filter 23, a position sensor 24, a return spring 25, a piston 26, a shift cylinder 27, a throttle valve 28, and a PPV valve 29. The P position range of the shift lever 22 corresponds to the P shift position of the vehicle, and the nP position range of the shift lever 22 corresponds to the D shift position of the vehicle, that is, when the vehicle is in the P shift position, the latch valve 21 is in the P position range of the shift lever 22, and when the vehicle is in the D shift position, the latch valve 21 is in the nP position range of the shift lever 22. The piston 26 is arranged on the right side of the shift lever 22, and forms a piston mechanism together with the return spring 25 and the shift hydraulic cylinder 27.

The PPV valve 29 may be represented by an S1 valve, and the latch valve 21 may be represented by an S2 valve. The S1 valve is a linear controllable solenoid valve and can supply a required pressure to the shift cylinder 27 according to the opening degree. The S2 valve state comprises a locking state and an unlocking state, and when the S2 valve is in the unlocking state, the gear shift lever 22 can move left and right under the combined action of the elastic force of the return spring 25 and the pressure provided by the S1 valve according to the direction of the combined action force; when the S2 valve is in the locked state, the shift lever 22 is locked and cannot be moved greatly.

Explained further, the position of the shift lever 22 can be monitored and collected by the position sensor 24, and the position sensor 24 processes the collected voltage analog quantity into a TCU (Transmission Control Unit) to obtain a digital quantity for feeding back the real-time position of the shift lever 22. Preferably, the shift lever 22 can be set from the nP position to the P position with the monitored value of the corresponding position sensor 24 going from low to high. Alternatively, the position range of the shift lever 22 monitored by the position sensor 24 may be set to 0 to 10 mm, wherein a position on the right side of the rightmost end of the nP position in fig. 2 (which is not limited in this embodiment) may be 0 mm, and a position on the left side of the leftmost end of the P position in fig. 2 (which is not limited in this embodiment) may be 10 mm.

Further, the position state of the shift lever 22 is determined by the position of the shift lever 22 fed back by the position sensor 24. When the position of the shift lever 22 is within the high and low threshold ranges of the nP position, it is determined that the shift lever 22 is in the nP position. Alternatively, the high threshold for the nP position may be set at 1.5 mm and the low threshold may be set at 1 mm. When the position of the shift lever 22 is within the high and low threshold ranges of the P position, it is determined that the shift lever 22 is in the P position. Alternatively, the P position high threshold may be set at 9 mm and the low threshold may be set at 8.5 mm. And the high and low thresholds of the nP position and the P position can be determined by calibration. It should be noted that the S2 valve can be brought into the locked state only when the position of the shift lever 22 is at the nP position or the P position.

Further, the working principle of the integrated gear actuator is explained as follows: when the vehicle is in the P range state, the shift lever 22 is in the P position, and the S2 valve is in the lock state. When the user enters the gear D from the gear P, the valve S2 is in an unlocked state, the valve S1 is opened, the gear shift lever 22 moves towards the left side, namely the direction of the position nP under the combined action of the pressure provided by the return spring 25 and the valve S1, when the position nP of the gear shift lever 22 is detected, the valve S2 is locked, the valve S1 is closed, and the gear P is out. When the user returns to the P range from the D range, the S2 valve is first in the unlocked state, the shift lever 22 is moved to the right direction, i.e., the P position direction, by the combined action of the pressure provided by the return spring 25 and the S1 valve, and when it is detected that the shift lever 22 reaches the P position, the S2 valve is locked, and the P range entering operation is completed.

Preferably, the target vehicle may be an automatic transmission vehicle equipped with an automatic transmission.

It should be noted that the target shift position may be the P position of the shift lever or the nP position of the shift lever.

For example, the state information of the target vehicle may include: the number of miles traveled by the target vehicle, the travel time of the target vehicle, the current gear of the target vehicle, the oil temperature of the target vehicle, the main oil pressure of the target vehicle, the grade on which the target vehicle is located, whether the target vehicle has a malfunction, whether the EPB (Electrical Park Brake) of the target vehicle is in a locked state, and the like.

Specifically, after the target vehicle is powered on, after a set time threshold (where the set time threshold may be a time value preset by a user according to an actual situation, and a specific numerical value of the set time threshold is not limited in this embodiment, optionally, the set time threshold may be 2 seconds), whether a latch valve of the target vehicle is located at a target shift position of the shift lever is detected, where the target shift position may be a P position corresponding to a P gear or an nP position corresponding to a D gear. When the fact that a lock valve of a target vehicle is located at a target gear position of a gear shifting lever is detected, state information of the target vehicle is obtained.

And S102, if the state information of the target vehicle meets the target preset condition, generating a target control instruction, and acquiring a target endpoint position corresponding to the target control instruction.

It is to be explained that the target preset condition may be a condition that the target vehicle is capable of the target shift position determining operation. In this embodiment, different target gear positions correspond to different target preset conditions.

For example, when the target gear position is a P position corresponding to a P gear, the target preset condition may be: the difference between the mileage of the target vehicle and the mileage successfully corresponding to the last determination of the target gear position is greater than or equal to a preset mileage threshold (where the preset mileage threshold may be a mileage preset by the user according to actual conditions, and the present embodiment does not limit a specific value of the preset mileage threshold; optionally, the preset mileage threshold may be 500 kilometers), or the difference between the travel time of the target vehicle and the travel time successfully corresponding to the last determination of the target gear position is greater than or equal to a preset travel time threshold (where the preset travel time threshold may be a time value preset by the user according to actual conditions, and the present embodiment does not limit a specific value of the preset travel time threshold; optionally, the preset travel time threshold may be 240 hours), the shift valve of the target vehicle is located at the P position of the lever and does not receive the P range command, the oil temperature of the target vehicle is within a preset oil temperature threshold range (where the preset oil temperature threshold range may be an oil temperature range preset by the user according to actual conditions, and the preset oil temperature threshold range may be a gradient range of the target vehicle within a gradient range of 20 ℃ and a gradient range of the target vehicle may be set by the user without a gradient, where the preset gradient range of the target gradient of the target vehicle is not limited Electric oil pump failure, solenoid valve failure, sensor failure, EPB failure, and the like.

For example, when the target shift position is an nP position corresponding to the D shift, the target preset condition may be: after the target vehicle is powered on, the determination of the P-range position is completed, the EPB is in a locked state, and a user does not issue a P-range instruction, the main oil pressure of the target vehicle is higher than a preset oil pressure threshold (where the preset oil pressure threshold may be a pressure value of an oil pressure preset by the user according to an actual situation, and a specific numerical value of the preset oil pressure threshold is not limited in the present embodiment, optionally, the preset oil pressure threshold may be 8 bar), the oil temperature of the target vehicle is within a preset oil temperature threshold range (where the preset oil temperature threshold range may be an oil temperature range preset by the user according to an actual situation, and the present embodiment does not limit a specific range value of the preset oil temperature threshold range).

It should be noted that the target control command may be a command for controlling the shift lever to move.

The target end point position may be end point positions corresponding to two end points of the target gear position. The target shift position may be a P position corresponding to the P range, or may be an nP position corresponding to the D range. When the target gear position is a P position, the target end point position may be a high end point position and a low end point position corresponding to the P position; when the target gear position is the nP position, the target end point position may be a high end point position and a low end point position corresponding to the nP position.

Specifically, if the state information of the target vehicle is detected to meet the target preset condition corresponding to the P-gear position, a target control instruction is generated, the shift lever is controlled to move between two endpoints of the P-position corresponding to the P-gear, and the endpoint positions of the two endpoints of the P-position are obtained. Similarly, if the state information of the target vehicle is detected to meet the target preset condition corresponding to the D gear position, a target control instruction is generated, the gear shift lever is controlled to move between two endpoints of the nP position corresponding to the D gear, and the endpoint positions of the two endpoints of the nP position are obtained.

And S103, determining a target gear position according to the target endpoint position corresponding to the target control instruction.

The target gear position may include a P position corresponding to the P gear and an nP position corresponding to the D gear.

Specifically, the target gear position is determined according to 4 end positions corresponding to the target control instruction.

It should be noted that, in the actual operation process, the position of the P-gear should be determined first, and after the position of the P-gear is determined, the position of the D-gear should be determined.

Optionally, the obtaining a target endpoint position corresponding to the target control instruction includes:

and controlling the locking valve to move to a first end point position corresponding to the target gear, and recording the position coordinate of the first end point.

The target shift position may be a P position corresponding to the P range, or may be an nP position corresponding to the D range. When the target gear position is the P position, the first endpoint position may be a lower endpoint position corresponding to the P position, that is, a rightmost endpoint position of the P position in fig. 2; when the target gear position is the nP position, the first endpoint position may be a high endpoint position corresponding to the nP position, that is, a leftmost endpoint position of the nP position in fig. 2.

It should be noted that the coordinates of the first endpoint may be acquired by the position sensor. Specifically, the first endpoint position coordinates may be coordinates calculated starting from a position on the right side of the rightmost end of the nP position in fig. 2 (this embodiment is not limited thereto) as the 0 mm starting point. For example, if the first endpoint is 2 millimeters from a 0 millimeter origin, the first endpoint location coordinates may be expressed as 2 millimeters.

Specifically, if the state information of the target vehicle is detected to meet the target preset condition corresponding to the P-gear position, the target vehicle is in the P gear, the gear shift lever is located at the P position, and the S2 valve is in the locking state. At this time, the S1 valve is opened to output the set pressure, and further, the set pressure may be changed by the oil temperature, for example, the higher the oil temperature is, the lower the set pressure is, and it is required to satisfy that the pressure output by the S1 valve can overcome the elastic force of the return spring at the P position to push the shift lever to move to the low end limit position at the P position. Optionally, the pressure output in the 50 ℃ oil temperature state may be set to 5bar, after waiting for the set time threshold, optionally, the set time threshold may be 300 milliseconds, and after monitoring that the speed of the shift lever is 0, the position sensor records the position as the P-position low end point position, that is, the first end point position corresponding to the P-gear, and records the first end point position coordinate.

Similarly, if the state information of the target vehicle is detected to meet the target preset condition corresponding to the D gear position, the gear shift lever is still located at the P position, the S2 valve is controlled to be in the unlocking state, the S1 valve is opened at the same time, and after the gear shift lever is pushed to reach the nP position, the S2 valve is locked, and the P gear shifting action is completed. After the S1 valve is closed, the gear shift lever moves to the high end point limit position of the nP position under the action of the elastic force of the return spring, after a set time threshold value is waited, the set time threshold value can be selected to be 300 milliseconds, and after the position sensor monitors that the speed of the gear shift lever is 0, the position is recorded as the high end point position of the nP position, namely the position of the first end point corresponding to the D gear, and the position coordinate of the first end point is recorded.

And controlling the locking valve to move to a second endpoint position corresponding to the target gear, and recording the position coordinate of the second endpoint.

The target shift position may be a P position corresponding to the P range, or may be an nP position corresponding to the D range. When the target gear position is the P position, the second endpoint position may be a high endpoint position corresponding to the P position, that is, a leftmost endpoint position of the P position in fig. 2; when the target gear position is the nP position, the second endpoint position may be a lower endpoint position corresponding to the nP position, i.e., a rightmost endpoint position of the nP position in fig. 2.

It should be noted that the coordinates of the second endpoint may be acquired by the position sensor. Specifically, the second endpoint position coordinates may be coordinates calculated starting from a position on the right side of the rightmost end of the nP position in fig. 2 (this embodiment is not limited to this) as 0 mm. For example, if the second endpoint is 5 mm from the 0 mm start point, the second endpoint location coordinates may be represented as 5 mm.

Specifically, the locking valve is controlled to move to a first end point position corresponding to the P gear, after a coordinate of the first end point position is recorded, the S1 valve is closed, the gear shifting lever moves to a high end point limit position of the P position under the action of the elastic force of a return spring, after a set time threshold value is waited, optionally, the set time threshold value can be 300 milliseconds, and after the position sensor monitors that the speed of the gear shifting lever is 0, the position is recorded as the high end point position of the P position, namely, a second end point position corresponding to the P gear, and a coordinate of the second end point position is recorded.

Similarly, the locking valve is controlled to move to the position of a first end point corresponding to the D gear, after coordinates of the position of the first end point are recorded, the S1 valve is opened, set pressure is output, and further the set pressure can be changed by oil temperature. Optionally, the pressure output in the 50 ℃ oil temperature state may be set to 8bar, after waiting for the set time threshold, optionally, the set time threshold may be milliseconds, and after monitoring that the speed of the shift lever is 0, the position sensor records the position as the position of the nP-position low end, that is, the position of the second end corresponding to the D-gear, and records the position coordinate of the second end.

Optionally, determining the target gear position according to the target endpoint position corresponding to the target control instruction includes:

and acquiring historical first end position coordinates and historical second end position coordinates corresponding to the target gear.

It should be noted that the historical first endpoint position coordinates and the historical second endpoint position coordinates may be first endpoint position coordinates and second endpoint position coordinates corresponding to a target gear, which are stored in advance. Specifically, if the target vehicle has not been subjected to target gear position determination before, the historical first end point position coordinates and the historical second end point position coordinates may be default values of the target gear position defined by the integrated gear actuator when the integrated gear actuator leaves the factory, which are stored in advance; if the target vehicle has previously been subjected to the target gear position determination, the historical first endpoint position coordinates and the historical second endpoint position coordinates may be pre-stored target gear positions after the last target gear position determination.

Specifically, after the vehicle is powered on, whether a latch valve of the target vehicle is located at a target gear position of a gear shift lever is detected. And if the fact that the locking valve of the target vehicle is located at the target gear position of the gear shifting lever is detected, state information of the target vehicle is obtained. And if the state information of the target vehicle meets the target preset condition, acquiring historical first endpoint position coordinates and historical second endpoint position coordinates corresponding to the target gear.

And determining the target gear position according to the first end point position coordinate, the second end point position coordinate, the historical first end point position coordinate and the historical second end point position coordinate, and storing the target gear position in a database.

In this embodiment, the database may be a database for storing a target gear position of the target vehicle.

Specifically, the target gear position is determined according to the first end point position coordinate, the second end point position coordinate, the historical first end point position coordinate and the historical second end point position coordinate, and the updated target gear position is stored in the database.

Optionally, determining the target gear position according to the first endpoint position coordinate, the second endpoint position coordinate, the historical first endpoint position coordinate, and the historical second endpoint position coordinate includes:

and determining a first deviation value according to the first endpoint position coordinate and the historical first endpoint position coordinate.

Wherein the first deviation value may be a difference between the first endpoint location coordinates and the historical first endpoint location coordinates.

Specifically, a difference between the coordinates of the first endpoint and the historical coordinates of the first endpoint is calculated as a first deviation value corresponding to the first endpoint.

And determining a second deviation value according to the second endpoint position coordinates and the historical second endpoint position coordinates.

Wherein the second deviation value may be a difference between the second endpoint location coordinates and the historical second endpoint location coordinates.

Specifically, a difference between the coordinates of the second endpoint location and the coordinates of the historical second endpoint location is calculated as a second deviation value corresponding to the second endpoint location.

And if the first deviation value is smaller than or equal to the preset deviation threshold value and the second deviation value is larger than the preset deviation threshold value, updating the coordinate of the first endpoint position in the target gear position into the coordinate of the first endpoint position.

The preset deviation threshold may be a threshold of a difference between a first endpoint position coordinate and a historical first endpoint position coordinate, and a difference between a second endpoint position coordinate and a historical second endpoint position coordinate, which are preset by a user according to an actual situation. In the actual operation process, the threshold of the difference between the first endpoint position coordinate and the historical first endpoint position coordinate, and the threshold of the difference between the second endpoint position coordinate and the historical second endpoint position coordinate may be set to be the same, or may be set to be different, and in this embodiment, the two thresholds are set to be the same. The specific value of the preset deviation threshold is not limited in this embodiment, and preferably, the preset deviation threshold may be 0.5 mm.

In the actual operation process, 4 endpoints are independently determined, and whether each endpoint meets the updating condition does not affect other endpoints. When the number of continuous times of the deviation value of one end point is larger than the preset deviation threshold value and the times reach the preset times threshold value, optionally, the preset times threshold value can be 5 times, and then a fault is reported to prompt a user to check the gear actuator.

Specifically, if the first deviation value is less than or equal to a preset deviation threshold, updating the first endpoint position coordinate in the target gear position to the latest determined first endpoint position coordinate; and if the second deviation value is larger than the preset deviation threshold value, not updating the position coordinates of the second endpoint in the target gear position.

And if the second deviation value is smaller than or equal to the preset deviation threshold value and the first deviation value is larger than the preset deviation threshold value, updating the coordinate of the second endpoint position in the target gear position to be the coordinate of the second endpoint position.

Specifically, if the second deviation value is smaller than or equal to the preset deviation threshold, updating the second endpoint position coordinate in the target gear position to the newly determined second endpoint position coordinate; and if the first deviation value is larger than the preset deviation threshold value, not updating the position coordinates of the first end point in the target gear position.

And if the first deviation value is smaller than or equal to a preset deviation threshold value and the second deviation value is smaller than or equal to a preset deviation threshold value, determining the target gear position according to the first endpoint position coordinate and the second endpoint position coordinate.

Specifically, if the first deviation value is less than or equal to a preset deviation threshold, updating the first endpoint position coordinate in the target gear position to the latest determined first endpoint position coordinate; and if the second deviation value is smaller than or equal to the preset deviation threshold value, updating the second endpoint position coordinate in the target gear position to the newly determined second endpoint position coordinate.

Illustratively, the preset deviation threshold may be set to 0.5 mm. If the first endpoint position coordinate corresponding to the P-gear position is 8.55 millimeters and the acquired historical first endpoint position coordinate corresponding to the P-gear position is 8.6 millimeters, the first deviation value corresponding to the first endpoint position of the P-gear position may be 0.05 millimeters and is smaller than a preset deviation threshold value, and then 8.55 millimeters is determined as the first endpoint position coordinate corresponding to the P-gear position. If the coordinate of the second endpoint position corresponding to the P-gear position is 8.2 millimeters and the obtained historical coordinate of the second endpoint position corresponding to the P-gear is 8.8 millimeters, the second deviation value corresponding to the second endpoint position of the P-gear may be 0.6 millimeters and is greater than the preset deviation threshold, the coordinate of the second endpoint position corresponding to the P-gear is not updated to be 8.2 millimeters, that is, the coordinate of the second endpoint position corresponding to the P-gear stored in the database is still 8.8 millimeters.

Optionally, the target gear is a P gear.

Correspondingly, the target gear position determination method further comprises the following steps:

and when the condition that the state information of the target vehicle meets the preset interruption condition is detected, switching the state information of the target vehicle from the target gear position determination state to the driving state.

It should be noted that the preset interruption condition may be a condition for interrupting the target gear position determination process, which is preset by a user according to an actual situation.

For example, the preset interrupt condition may include: detecting that a user steps on an accelerator pedal, detecting that the user steps on a brake pedal, receiving an unlocking instruction by the EPB, detecting that the speed of the target vehicle exceeds a preset speed threshold range (wherein, the preset speed threshold range may be a speed range of the target vehicle preset by the user according to actual conditions, and the specific range value of the preset speed threshold range is not limited in the present embodiment)), detecting that the oil temperature of the target vehicle exceeds a preset oil temperature threshold range (wherein, the preset oil temperature threshold range may be an oil temperature range preset by the user according to actual conditions, and the specific range value of the preset oil temperature threshold range is not limited in the present embodiment; optionally, the preset oil temperature threshold range may be 20 ℃ to 100 ℃), detecting that the gradient of the target vehicle exceeds a set gradient threshold range (wherein, alternatively, the set gradient threshold range may be ± 1.5 °), detecting that the main oil pressure of the target vehicle is lower than a preset oil pressure threshold (where the preset oil pressure threshold may be a pressure value of the oil pressure preset by the user according to the actual condition, and the present embodiment does not limit a specific value of the preset oil pressure threshold).

The driving state may be a state in which the user normally drives the use target vehicle.

Specifically, the state information of the target vehicle is detected and acquired in real time, and when the state information of the target vehicle is detected to meet a preset interruption condition, the state information of the target vehicle is switched from the determined state of the target gear position to the driving state, so that normal and safe use of the target vehicle is guaranteed.

Optionally, the target gear is a gear D.

and when the condition information of the target vehicle is detected to meet the preset interruption condition, controlling the locking valve of the target vehicle to return to the P gear position of the gear shifting lever.

Specifically, the state information of the target vehicle is detected and obtained in real time, when the state information of the target vehicle is detected to meet a preset interruption condition, the target vehicle is controlled to immediately execute a P gear returning instruction, the S1 valve is opened to control the gear shifting lever to return to the P position, and the S2 valve is locked, so that normal and safe use of the target vehicle is guaranteed.

According to the technical scheme of the embodiment of the invention, the electromagnetic valve is used for controlling the gear actuator, so that a zipper mechanism adopted by a mechanical parking locking mechanism and a driving motor of an electric boosting locking mechanism are saved, the arrangement space of the whole vehicle is saved, and the cost is reduced. According to the technical scheme of the embodiment of the invention, the actual locking positions of the P gear and the D gear can be updated under the condition that the target vehicle meets the target preset condition, the problem that the actual positions of the gear actuator caused by manufacturing errors or abrasion errors are not consistent with the defined default positions is solved, the actual locking positions of the P gear and the D gear actuator are updated by determining the positions of the P gear and the D gear, the time for calibrating the positions of the P gear and the D gear is saved, the influence of deformation on the system is reduced, and the accuracy and the safety of the control system are improved.

Example two

Fig. 3 is a schematic structural diagram of a target gear position determining apparatus according to a second embodiment of the present invention. As shown in fig. 3, the apparatus includes: an acquisition module 301, a processing module 302 and a determination module 303.

The acquiring module 301 is configured to acquire state information of a target vehicle when it is detected that a latch valve of the target vehicle is located at a target gear position of a shift lever;

the processing module 302 is configured to generate a target control instruction if the state information of the target vehicle meets a target preset condition, and acquire a target endpoint position corresponding to the target control instruction;

and the determining module 303 is configured to determine a target gear position according to a target endpoint position corresponding to the target control instruction.

Optionally, the processing module 302 includes:

the first processing unit is used for controlling the locking valve to move to a first end point position corresponding to the target gear and recording a first end point position coordinate;

and the second processing unit is used for controlling the locking valve to move to a second end point position corresponding to the target gear and recording a second end point position coordinate.

Optionally, the determining module 303 includes:

the acquisition unit is used for acquiring historical first endpoint position coordinates and historical second endpoint position coordinates corresponding to the target gear;

and the determining unit is used for determining a target gear position according to the first end point position coordinate, the second end point position coordinate, the historical first end point position coordinate and the historical second end point position coordinate, and storing the target gear position in a database.

Optionally, the determining unit includes:

the first determining subunit is used for determining a first deviation value according to the first endpoint position coordinate and the historical first endpoint position coordinate;

the second determining subunit is used for determining a second deviation value according to the second endpoint position coordinate and the historical second endpoint position coordinate;

the third determining subunit is configured to update the coordinate of the first endpoint in the target gear position to the coordinate of the first endpoint if the first deviation value is smaller than or equal to a preset deviation threshold and the second deviation value is greater than the preset deviation threshold;

a fourth determining subunit, configured to update a coordinate of a second endpoint position in the target gear position to a coordinate of the second endpoint position if the second deviation value is smaller than or equal to the preset deviation threshold and the first deviation value is greater than the preset deviation threshold;

and the fifth determining subunit is configured to determine the target gear position according to the first endpoint position coordinate and the second endpoint position coordinate if the first deviation value is less than or equal to the preset deviation threshold and the second deviation value is less than or equal to the preset deviation threshold.

Optionally, the target gear is a gear P;

correspondingly, the target gear position determining device further comprises:

and the switching module is used for switching the state information of the target vehicle from the target gear position determination state to the driving state when the state information of the target vehicle is detected to meet the preset interruption condition.

Optionally, the target gear is a gear D;

correspondingly, the target gear position determining device further comprises:

and the control module is used for controlling a locking valve of the target vehicle to return to a P-gear position of the gear shifting lever when the condition information of the target vehicle is detected to meet a preset interruption condition.

The target gear position determining device provided by the embodiment of the invention can execute the target gear position determining method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the executing method.

EXAMPLE III

FIG. 4 shows a schematic block diagram of an electronic device 40 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smart phones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. 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. 4, the electronic device 40 includes at least one processor 41, and a memory communicatively connected to the at least one processor 41, such as a Read Only Memory (ROM) 42, a Random Access Memory (RAM) 43, and the like, wherein the memory stores a computer program executable by the at least one processor, and the processor 41 may perform various suitable actions and processes according to the computer program stored in the Read Only Memory (ROM) 42 or the computer program loaded from a storage unit 48 into the Random Access Memory (RAM) 43. In the RAM 43, various programs and data necessary for the operation of the electronic apparatus 40 can also be stored. The processor 41, the ROM 42, and the RAM 43 are connected to each other via a bus 44. An input/output (I/O) interface 45 is also connected to bus 44.

A number of components in the electronic device 40 are connected to the I/O interface 45, including: an input unit 46 such as a keyboard, a mouse, or the like; an output unit 47 such as various types of displays, speakers, and the like; a storage unit 48 such as a magnetic disk, an optical disk, or the like; and a communication unit 49 such as a network card, modem, wireless communication transceiver, etc. The communication unit 49 allows the electronic device 40 to exchange information/data with other devices via a computer network such as the internet and/or various telecommunication networks.

Processor 41 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 41 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, or the like. Processor 41 performs the various methods and processes described above, such as the target gear position determination method:

In some embodiments, the target gear position determination method may be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 48. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 40 via the ROM 42 and/or the communication unit 49. When the computer program is loaded into RAM 43 and executed by processor 41, one or more steps of the target gear position determination method described above may be performed. Alternatively, in other embodiments, processor 41 may be configured to perform the target gear position determination method by any other suitable means (e.g., by way of firmware).

Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), system on a chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.

A computer program for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be performed. A computer program can execute entirely on a machine, partly on a machine, as a stand-alone software package partly on a machine and partly on a remote machine or entirely on a remote machine or server.

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

To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic, speech, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the Internet.

The computing system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical host and VPS service are overcome.

It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solution of the present invention can be achieved.

The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method of determining a target gear position, comprising:

2. The method of claim 1, wherein obtaining the target endpoint location corresponding to the target control command comprises:

controlling the locking valve to move to a first end point position corresponding to the target gear, and recording a first end point position coordinate;

3. The method of claim 2, wherein determining a target gear position according to a target endpoint position corresponding to the target control command comprises:

acquiring a historical first endpoint position coordinate and a historical second endpoint position coordinate corresponding to the P gear;

and determining a target gear position according to the first end point position coordinate, the second end point position coordinate, the historical first end point position coordinate and the historical second end point position coordinate, and storing the target gear position in a database.

4. The method of claim 3, wherein determining a target gear position from the first endpoint location coordinates, the second endpoint location coordinates, the historical first endpoint location coordinates, and the historical second endpoint location coordinates comprises:

determining a first deviation value according to the first endpoint position coordinate and the historical first endpoint position coordinate;

determining a second deviation value according to the second endpoint position coordinate and the historical second endpoint position coordinate;

if the first deviation value is smaller than or equal to a preset deviation threshold value and the second deviation value is larger than the preset deviation threshold value, updating the coordinate of a first endpoint position in the target gear position to the coordinate of the first endpoint position;

if the second deviation value is smaller than or equal to the preset deviation threshold value and the first deviation value is larger than the preset deviation threshold value, updating the coordinate of a second endpoint position in the target gear position to be the coordinate of the second endpoint position;

and if the first deviation value is smaller than or equal to the preset deviation threshold value and the second deviation value is smaller than or equal to the preset deviation threshold value, determining a target P gear position according to the first endpoint position coordinate and the second endpoint position coordinate.

5. The method of claim 1, wherein the target gear is P gear;

correspondingly, the method also comprises the following steps:

6. The method according to claim 1, wherein the target gear is a D gear;

correspondingly, the method also comprises the following steps:

and when the condition information of the target vehicle is detected to meet the preset interruption condition, controlling a locking valve of the target vehicle to return to the P-gear position of the gear shifting lever.

7. A target gear position determination apparatus, comprising:

8. The apparatus of claim 7, wherein the processing module comprises:

and the second processing unit is used for controlling the locking valve to move to a second endpoint position corresponding to the target gear and recording a second endpoint position coordinate.

9. An electronic device, characterized in that the electronic device comprises:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the target gear position determination method of any one of claims 1-6.

10. A computer readable storage medium storing computer instructions for causing a processor to perform the method of determining a position of a target gear according to any one of claims 1 to 6 when executed.