CN115789239A - Position adjusting method and device for hard stop point of vehicle gear, and vehicle-mounted controller - Google Patents
Position adjusting method and device for hard stop point of vehicle gear, and vehicle-mounted controller Download PDFInfo
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Abstract
The application is suitable for the technical field of automobiles, and provides a method and a device for adjusting the position of a hard stop point of a vehicle gear and a vehicle-mounted controller, wherein the method comprises the following steps: when the fact that the vehicle is shifted to a set gear and a shifting fork of the vehicle reaches the current gear engaging position of the set gear is detected, the shifting fork is controlled to move towards the set direction; the set direction refers to a direction from the current gear engaging position of the set gear to a hard stop of the set gear; and if the shifting fork reaches the hard stop point within the first set time, adjusting the stored reference position of the hard stop point according to the position information of the hard stop point. The position adjusting method provided by the application can adjust the stored reference position of the hard stop, and can adjust the stored reference position of the hard stop according to the position information of the hard stop when the shifting fork is detected to reach the hard stop within the first set time and the shifting fork is effectively moved, so that the accuracy of adjusting the stored reference position of the hard stop is improved.
Description
Technical Field
The application belongs to the technical field of automobiles, and particularly relates to a position adjusting method and device for a vehicle gear hard stop point, a vehicle-mounted controller and a computer readable storage medium.
Background
At present, with the rapid development of new energy automobiles, in order to obtain higher vehicle speed and higher electric drive system efficiency, a two-gear reduction gearbox is used in a large amount. The gear shifting of the two-gear reduction box is a process that after the rotating speed of the driving Motor is synchronized, a Brushless Direct Current Motor (BLDC/BLDCM) shifts a fork to push a synchronizing ring to reach a gear shifting point position (namely a hard stop position of the 1 gear or the 2 gear).
The prior art generally obtains the hard dead center positions of the gears through self-learning. However, when the shifting fork or the gear shifting controller is worn, the shifting fork is prone to not reaching the hard dead center position which is accurate in self-learning, that is, the hard dead center position obtained through self-learning has a large error, and therefore the practicability of the hard dead center position is reduced.
Disclosure of Invention
The embodiment of the application provides a method and a device for adjusting the position of a hard stop of a vehicle gear, a vehicle-mounted controller and a computer readable storage medium, which can improve the accuracy of adjusting the reference position of the stored hard stop so as to improve the practicability of the reference position of the hard stop.
In a first aspect, an embodiment of the present application provides a method for adjusting a position of a hard dead center of a gear of a vehicle, including:
when the fact that the vehicle is shifted to a set gear and a shifting fork of the vehicle reaches the current gear engaging position of the set gear is detected, the shifting fork is controlled to move towards a set direction; the setting direction refers to a direction from a current gear engaging position of the setting gear to a hard stop point of the setting gear;
and if the shifting fork reaches the hard stop point within the first set time, adjusting the stored reference position of the hard stop point according to the position information of the hard stop point.
Optionally, control the shift fork removes to setting for the direction, include:
acquiring torque and torque gradient of a driving motor of the vehicle;
and if the torque is smaller than a first threshold value and the torque gradient is smaller than a second threshold value, controlling the shifting fork to move towards the set direction.
Optionally, after obtaining the torque and the torque gradient of the driving motor of the vehicle, the method further includes:
and if the torque is greater than or equal to the first threshold value or the torque gradient is greater than or equal to the second threshold value, delaying for a second set time, and then returning to the step of acquiring the torque and the torque gradient of the driving motor of the vehicle.
Optionally, after the shift fork is controlled to move in the set direction, the method further includes:
if the shifting fork does not reach the hard stop point within the first set time, accumulating the times of the shifting fork moving towards the set direction;
if the frequency is less than a third threshold value, controlling the shifting fork to return to the current gear engaging position, and after detecting that the shifting fork reaches the current gear engaging position, controlling the shifting fork to continue to move towards the set direction;
and if the shifting fork reaches the hard stop point within the first set time, adjusting the stored reference position according to the position information of the hard stop point.
Optionally, the adjusting the stored reference position of the hard dead point according to the position information of the hard dead point includes:
detecting whether the position information of the hard stop point meets a set condition;
and if the position information of the hard dead point meets the set condition, adjusting the stored reference position of the hard dead point.
Optionally, the position information includes a position coordinate of the hard stop point and a distance that the shifting fork moves to the hard stop point, and detecting whether the position information of the hard stop point meets a set condition includes:
and if the position coordinate is in a first set range or the distance is in a second set range, determining that the position information of the hard stop point meets the set condition.
Optionally, after the adjusting the stored reference position of the hard dead point according to the position information of the hard dead point, the method further includes:
and controlling the shifting fork to return to the current gear engaging position of the set gear.
In a second aspect, an embodiment of the present application provides a position adjustment device for a vehicle gear hard dead center, including:
the first control unit is used for controlling a shifting fork of a vehicle to move towards a set direction when the fact that the vehicle is shifted to a set gear and the shifting fork of the vehicle reaches the current gear engaging position of the set gear is detected; the setting direction refers to a direction from a current gear engaging position of the setting gear to a hard stop point of the setting gear;
and the first adjusting unit is used for adjusting the stored reference position of the hard stop point according to the position information of the hard stop point if the shifting fork reaches the hard stop point within a first set time.
In a third aspect, an embodiment of the present application provides an on-vehicle controller, including: a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the method for adjusting the position of the vehicle gear hard stop point according to any one of the first aspect.
In a fourth aspect, the present application provides a computer-readable storage medium, which stores a computer program, and the computer program, when executed by a processor, implements the method for adjusting the position of the vehicle gear hard stop point according to any one of the above first aspects.
In a fifth aspect, the present application provides a computer program product, when the computer program product runs on an onboard controller, the onboard controller may execute the method for adjusting the position of the vehicle gear hard stop according to any one of the first aspect.
Compared with the prior art, the embodiment of the application has the advantages that:
according to the position adjusting method for the hard stop point of the vehicle gear, when the condition that the vehicle is shifted to the set gear and the shifting fork of the vehicle reaches the current gear engaging position of the set gear is detected, the shifting fork is controlled to move towards the set direction; the setting direction refers to a direction from a current gear engaging position of a set gear to a hard stop of the set gear; and if the shifting fork reaches the hard stop point within the first set time, adjusting the stored reference position of the hard stop point according to the position information of the hard stop point. The application provides a position adjustment method not only can adjust the reference position of the hard stop that has stored, and detect the shift fork and arrive the hard stop in first settlement time, when explaining the removal of shift fork is effective removal, just can adjust the reference position of the hard stop that has stored according to the positional information of this hard stop, improved the adjustment accuracy to the reference position of the hard stop that has stored, improved the degree of accuracy of the hard stop that has stored promptly, and then improved the practicality of the reference position of the hard stop that has stored. Meanwhile, when the vehicle controller detects that the vehicle is shifted to a set gear, the reference position of the hard stop point of the set gear can be corrected in real time; based on accurate hard stop position information, the accurate shift fork position can be confirmed when the vehicle shifts gears, so that accurate gear shifting is facilitated, and driving safety is improved.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flowchart illustrating an implementation of a method for adjusting a position of a gear hard stop of a vehicle according to an embodiment of the present disclosure;
FIG. 2 is a flowchart illustrating an implementation of a method for adjusting a position of a hard dead center in a vehicle gear according to another embodiment of the present application;
FIG. 3 is a flowchart illustrating an implementation of a method for adjusting a position of a gear hard stop of a vehicle according to still another embodiment of the present disclosure;
FIG. 4 is a flowchart illustrating an implementation of a method for adjusting a position of a gear hard stop of a vehicle according to another embodiment of the present application;
FIG. 5 is a schematic structural diagram of a position adjusting device for a gear hard dead center of a vehicle according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an on-board controller according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically stated.
In all embodiments of the present application, the vehicle may be a new energy automobile.
In practical application, the new energy automobile is an automobile which adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel vehicle-mounted power device), integrates advanced technologies in the aspects of power control and driving of the automobile, and has advanced technical principle, new technology and new structure. The new energy automobile comprises a pure electric automobile, an extended range electric automobile, a hybrid electric automobile, a fuel cell electric automobile, a hydrogen engine automobile and the like.
In all embodiments of the present application, the transmission configured for the vehicle is a two-speed reduction box.
The two-gear reduction box comprises a neutral gear (N gear), a 1 gear and a 2 gear, has two transmission ratios, can realize gear shifting in a full vehicle speed range and high torque output of starting, and enables a vehicle to run at a high-efficiency interval rotating speed of a driving motor, so that the dynamic property of the vehicle is optimized.
The following embodiment will describe in detail the method for adjusting the position of the hard dead center of the vehicle gear by taking the two-gear reduction gearbox as an example.
It should be noted that the two-gear reduction box includes 1 gear and 2 gears, and both the 1 gear and the 2 gear have their respective hard stop points. The hard stop point refers to a point which corresponds to the maximum limit and can be moved by a shifting fork of the vehicle in a gear range corresponding to each gear, namely the shifting fork cannot move any more after moving to the hard stop point of each gear.
The hard dead center position corresponding to each gear is obtained through self-learning in the prior art. However, when the shifting fork or the gear shifting controller is worn, the shifting fork is prone to not reach the self-learning hard dead center position, that is, the self-learning hard dead center position has a large error, and therefore the practicability of the hard dead center position is reduced.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for adjusting a position of a hard dead center of a vehicle gear according to an embodiment of the present disclosure. In the embodiment of the application, the main executing body of the method for adjusting the position of the gear position hard stop of the vehicle is a vehicle-mounted controller. The vehicle controller may be a shift controller (ACU).
As shown in fig. 1, a method for adjusting a position of a vehicle gear position hard dead center according to an embodiment of the present application may include steps S101 to S102, which are detailed as follows:
in S101, when a vehicle is detected to be shifted to a set gear and a shifting fork of the vehicle reaches a current gear engaging position of the set gear, controlling the shifting fork to move towards a set direction; the setting direction refers to a direction from a current gear engaging position of the set gear to a hard stop of the set gear.
The set gear may be the first gear or the second gear. Wherein, the first gear refers to gear 1, and the second gear refers to gear 2.
In this application embodiment, after detecting that the vehicle shifts to a set gear, in order to determine the position information of the hard stop of the set gear, the vehicle-mounted controller may control a shift fork of the vehicle to move in a set direction. Wherein the setting direction refers to a direction from a current gear position of the set gear to a hard stop of the set gear. The current gear engaging position of the set gear refers to the gear engaging position of the shifting fork at the moment when the vehicle shifts to the set gear.
It should be noted that the setting direction includes a first direction and a second direction. The first direction refers to a direction from a current gear position of the first gear to a hard stop of the first gear, and the second direction refers to a direction from a current gear position of the second gear to a hard stop of the second gear.
In one embodiment of the present application, the in-vehicle controller may specifically execute step S101 through S201 to S202 shown in fig. 2, which are detailed as follows:
in S201, torque and a torque gradient of a drive motor of the vehicle are acquired.
Note that the drive motor of the vehicle may be a P4 motor.
In practical applications, since the torque of the driving motor can be calculated according to the power and the rotation speed of the driving motor, in an implementation manner of this embodiment, the on-board controller can acquire the power and the rotation speed of the driving motor in real time from a server connected to the on-board controller in a wireless communication manner, and calculate the torque of the driving motor according to the power and the rotation speed. The server may be a computer, a desktop computer, or the like.
It should be noted that the torque gradient is a slope of a torque curve, and therefore, in another implementation manner of this embodiment, the onboard controller may obtain a torque curve of the driving motor in a historical time period, and calculate the torque gradient of the driving motor according to the torque curve. The historical time period may be determined according to actual needs, and is not limited herein.
In this embodiment, after acquiring the torque and the torque gradient of the driving motor, the onboard controller may compare the torque with a first threshold value, and compare the torque gradient with a second threshold value. The first threshold and the second threshold may be set according to actual needs, and are not limited herein.
In one embodiment of the present application, the on-board controller may execute step S202 when it is detected that the torque of the driving motor is less than the first threshold and the torque gradient of the driving motor is less than the second threshold.
In another embodiment of the present application, when the vehicle-mounted controller detects that the torque of the driving motor is greater than or equal to the first threshold, or the torque gradient of the driving motor is greater than or equal to the second threshold, it indicates that the torque or the torque gradient of the driving motor does not meet the preset condition at this time, so that the vehicle-mounted controller cannot control the shifting fork to move towards the set direction, and therefore, the vehicle-mounted controller needs to delay for a second set time, and then (i.e., after the second set time) return to perform step 201 until the torque of the driving motor is less than the first threshold, and the torque gradient of the driving motor is less than the second threshold. The second setting time may be set according to actual needs, and is not limited herein.
In S202, if the torque is smaller than a first threshold and the torque gradient is smaller than a second threshold, the shift fork is controlled to move in the set direction.
In this embodiment, when detecting that the torque of the driving motor is smaller than the first threshold and the torque gradient of the driving motor is smaller than the second threshold, the vehicle-mounted controller indicates that the torque and the torque gradient of the driving motor satisfy the preset condition, and therefore, the vehicle-mounted controller can control the shifting fork to move in the set direction.
In this application embodiment, on-vehicle controller need real-time detection the shift fork whether reach to hard stop within the first settlement time when control shift fork removes to the settlement direction. The first setting time may be determined according to actual needs, and is not limited herein.
In an embodiment of the present application, the vehicle-mounted controller may perform step S102 when detecting that the shift fork reaches a hard dead point of the set gear within a first set time.
In another embodiment of the present application, the on-board controller may perform steps S301 to S303 shown in fig. 3 when detecting that the shift fork does not reach the hard dead center of the set gear within the first set time.
In S102, if the fork reaches the hard dead point within a first set time, the stored reference position of the hard dead point is adjusted based on the position information of the hard dead point.
In the embodiment of the application, when the vehicle-mounted controller detects that the shifting fork reaches the hard stop point of the set gear within the first set time, the vehicle-mounted controller explains that the shifting fork is effective to move, so that the vehicle-mounted controller can adjust the stored reference position of the hard stop point according to the position information of the hard stop point.
The vehicle-mounted controller may adjust the stored reference position of the hard dead point based on the position information of the hard dead point, and may directly replace the reference position of the hard dead point with the position information of the hard dead point.
In an embodiment of the present application, the in-vehicle controller may specifically adjust the reference position of the stored hard dead center of the set gear by using S401 to S402 shown in fig. 4, which are detailed as follows:
in S401, it is detected whether or not the position information of the hard dead point satisfies a setting condition.
In this embodiment, when the vehicle-mounted controller detects that the shift fork reaches the hard stop of the set gear within the first set time, it indicates that the shift fork is moving effectively, so that the vehicle-mounted controller can acquire the position information of the hard stop and detect whether the position information of the hard stop meets the set condition, that is, whether the position information of the hard stop is effective.
In one implementation manner of this embodiment, the position information of the hard stop may be a position coordinate of the hard stop, and therefore, the setting condition may be: the position coordinates of the hard stop point are within a first set range. The first setting range may be set according to actual needs, and is not limited herein.
In another implementation manner of this embodiment, the position information of the hard stop may be a distance that a shift fork of the vehicle moves to the hard stop, and therefore, the setting condition may be: the distance is within a second set range. The second setting range may be set according to actual needs, and is not limited herein.
Based on this, in one embodiment of the present application, the vehicle-mounted controller may execute step S402 when detecting that the position information of the hard dead point of the set gear satisfies the set condition.
In another embodiment of the present application, when the vehicle-mounted controller detects that the position information of the hard dead point of the set gear does not satisfy the setting condition, the vehicle-mounted controller may indicate that the position information of the hard dead point is invalid, and in this case, in order to improve the working efficiency of the vehicle-mounted controller, the vehicle-mounted controller may accumulate the number of times that the shift fork moves in the setting direction of the set gear, and compare the number of times with the third threshold. The third threshold may be set according to actual needs, and is not limited herein.
In an embodiment of the application, the on-board controller may control the shift fork to return to the current gear-engaging position of the set gear when detecting that the number of times is less than a third threshold, control the shift fork to continue moving in the set direction of the set gear after detecting that the shift fork reaches the current gear-engaging position of the set gear, and continue detecting whether the position information of the hard stop meets the set condition when detecting that the shift fork reaches the hard stop of the set gear within a first set time.
In another embodiment of the present application, when the vehicle-mounted controller detects that the number of times is greater than or equal to the third threshold, it indicates that the number of times of movement of the shift fork is sufficient, but the position information of the hard stop still does not satisfy the setting condition at this time, which indicates that the position information of the hard stop is invalid, that is, the vehicle-mounted controller fails to adjust the reference position of the hard stop of the set gear, and therefore, the vehicle-mounted controller may output a prompt message for prompting that the reference position of the hard stop of the set gear has been stored fails to adjust.
In S402, if the position information of the hard dead center satisfies the setting condition, the stored reference position of the hard dead center is adjusted.
In this embodiment, when detecting that the position information of the hard dead point of the set gear satisfies the set condition, the vehicle-mounted controller indicates that the position information of the hard dead point is valid, and therefore, the vehicle-mounted controller can adjust the stored reference position of the hard dead point according to the position information of the hard dead point.
In one implementation manner of this embodiment, the detection that the position information of the hard stop point satisfies the setting condition by the vehicle-mounted controller may be: the position coordinates of the detected hard stop point are within a first set range.
In another implementation manner of this embodiment, the detection by the vehicle-mounted controller that the position information of the hard stop point satisfies the setting condition may further be: and detecting that the distance from the shifting fork to the hard stop point is in a second set range.
In the method for adjusting the position of the hard stop point of the vehicle gear, when it is detected that the vehicle is shifted to the set gear and the shifting fork of the vehicle reaches the current gear engaging position of the set gear, the shifting fork is controlled to move towards the set direction; the setting direction refers to a direction from a current gear engaging position of a set gear to a hard stop of the set gear; and if the shifting fork reaches the hard stop point within the first set time, adjusting the stored reference position of the hard stop point according to the position information of the hard stop point. The application provides a position adjustment method not only can adjust the reference position of the hard stop that has stored, and detect the shift fork and arrive the hard stop in first settlement time, when explaining the removal of shift fork is effective removal, just can adjust the reference position of the hard stop that has stored according to the positional information of this hard stop, improved the adjustment accuracy to the reference position of the hard stop that has stored, improved the degree of accuracy of the hard stop that has stored promptly, and then improved the practicality of the reference position of the hard stop that has stored. Meanwhile, when the vehicle is detected to be shifted to a set gear, the vehicle-mounted controller can correct the reference position of the hard stop of the set gear in real time, and the accurate shifting fork position can be determined when the vehicle is shifted based on accurate hard stop position information, so that accurate shifting is facilitated, and driving safety is improved.
In practical application, the reference position of the hard dead point is usually obtained through self-learning, so that the vehicle-mounted controller can correct the reference position of the hard dead point when the shifting fork is worn and the like on the premise of not executing the self-learning by the vehicle-mounted controller.
Referring to fig. 3, fig. 3 is a method for adjusting a position of a hard dead center of a vehicle gear according to another embodiment of the present disclosure. With respect to the embodiment corresponding to fig. 1, this embodiment may further include S301 to S303 after S101, which are detailed as follows:
in S301, if the fork does not reach the hard dead point within a first set time, the number of times the fork moves in the set direction is accumulated.
In this embodiment, when the vehicle-mounted controller detects that the shift fork does not reach the hard stop of the set gear within the first set time, it needs to accumulate the number of times that the shift fork moves to the set direction, and compare the number of times with the third threshold. The third threshold may be determined according to actual needs, and is not limited here, and for example, the third threshold may be 3 times.
In an embodiment of the application, the vehicle-mounted controller may execute steps S302 to S303 when detecting that the number of times is smaller than the third threshold.
In another embodiment of the present application, when the onboard controller detects that the number of times is greater than or equal to the third threshold, it indicates that the movement number of the shift fork is sufficient, but the shift fork still does not reach the hard stop of the set gear within the first set time, and the position information of the hard stop is invalid, that is, the onboard controller fails to adjust the reference position of the hard stop of the set gear, and therefore, the onboard controller may output a prompt message for prompting that the adjustment of the reference position of the hard stop stored in the set gear has failed.
In S302, if the number of times is less than a third threshold, the shift fork is controlled to return to the current shift position, and after the shift fork is detected to reach the current shift position, the shift fork is controlled to continue to move in the set direction.
In this embodiment, when the number of times detected by the onboard controller is smaller than the third threshold, it indicates that the number of times of movement of the shift fork is insufficient, that is, the onboard controller may continue to adjust the reference position of the hard stop of the set gear.
In S303, if the fork reaches the hard dead point within the first set time, the stored reference position is adjusted based on the position information of the hard dead point.
In this embodiment, the on-board controller may adjust the stored reference position of the hard dead point based on the position information of the hard dead point, because it indicates that the shift fork is effectively moved when it is detected that the shift fork reaches the hard dead point of the set gear within the first set time.
The vehicle-mounted controller may adjust the stored reference position of the hard dead center based on the position information of the hard dead center, and may directly replace the reference position of the hard dead center with the position information of the hard dead center.
As can be seen from the above, in the method for adjusting the position of the hard dead point of the gear position of the vehicle according to the embodiment, when it is detected that the shifting fork does not reach the hard dead point within the first set time, the number of times that the shifting fork moves towards the set direction is accumulated; if the frequency is less than a third threshold value, controlling the shifting fork to return to the current gear engaging position, and controlling the shifting fork to continue to move towards the set direction after detecting that the shifting fork reaches the current gear engaging position; and if the shifting fork reaches a hard stop point within the first set time, adjusting the stored reference position according to the position information of the hard stop point. By adopting the method, the success rate of adjusting the reference position of the set gear hard stop point is improved.
In another embodiment of this application, because the shift fork causes the shift fork to damage when being in the hard dead point of setting for the gear always, consequently, vehicle-mounted controller according to setting for the positional information of the hard dead point of gear, after adjusting the basic position of this hard dead point that has saved, can control the shift fork and return to the current position of putting into gear of setting for the gear, avoid the shift fork to damage, improve the life of shift fork.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by functions and internal logic of the process, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Fig. 5 shows a structural block diagram of a position adjustment device for a vehicle gear position hard dead center provided in an embodiment of the present application, corresponding to the position adjustment method for a vehicle gear position hard dead center described in the foregoing embodiment, and for convenience of description, only the parts related to the embodiment of the present application are shown. Referring to fig. 5, the vehicle gear hard dead center position adjusting apparatus 500 includes: a first control unit 51 and a first adjustment unit 52. Wherein:
the first control unit 51 is used for controlling a shifting fork of a vehicle to move towards a set direction when the vehicle is detected to be shifted to a set gear and the shifting fork of the vehicle reaches the current gear engaging position of the set gear; the set direction refers to a direction from a current gear engaging position of the set gear to a hard stop of the set gear.
The first adjusting unit 52 is configured to adjust the stored reference position of the hard stop according to the position information of the hard stop if the fork reaches the hard stop within a first set time.
In an embodiment of the present application, the first control unit 51 specifically includes: the device comprises an acquisition unit and a second control unit. Wherein:
the acquisition unit is used for acquiring the torque and the torque gradient of a driving motor of the vehicle.
The second control unit is used for controlling the shifting fork to move towards the set direction if the torque is smaller than a first threshold value and the torque gradient is smaller than a second threshold value.
In an embodiment of the present application, the position adjusting device 500 for vehicle gear hard dead center further comprises: and a delay unit.
The delay unit is used for delaying a second set time if the torque is greater than or equal to the first threshold or the torque gradient is greater than or equal to the second threshold, and then returning to the step of acquiring the torque and the torque gradient of the driving motor of the vehicle.
In an embodiment of the present application, the position adjustment device 500 for vehicle gear hard stop further comprises: the device comprises a first detection unit, a third control unit and a second adjusting unit. Wherein:
the first detection unit is used for accumulating the moving times of the shifting fork towards the set direction if the shifting fork does not reach the hard stop point within the first set time.
And the third control unit is used for controlling the shifting fork to return to the current gear engaging position if the frequency is smaller than a third threshold value, and controlling the shifting fork to continue to move towards the set direction after detecting that the shifting fork reaches the current gear engaging position.
And the second adjusting unit is used for adjusting the stored reference position according to the position information of the hard stop point if the shifting fork reaches the hard stop point within the first set time.
In an embodiment of the present application, the first adjusting unit 52 specifically includes: a second detection unit and a third adjustment unit. Wherein:
the second detection unit is used for detecting whether the position information of the hard stop point meets a set condition.
And the third adjusting unit is used for adjusting the stored reference position of the hard stop point if the position information of the hard stop point meets the set condition.
In one embodiment of the application, the position information comprises position coordinates of the hard stop point and a distance for the shifting fork to move to the hard stop point; the second detection unit specifically includes: a determination unit.
The determining unit is used for determining that the position information of the hard stop point meets the setting condition if the position coordinate is in a first setting range or the distance is in a second setting range.
In an embodiment of the present application, the position adjustment device 500 for vehicle gear hard stop further comprises: and a fourth control unit. Wherein:
and the fourth control unit is used for controlling the shifting fork to return to the current gear engaging position of the set gear.
It should be noted that, for the information interaction, execution process, and other contents between the above-mentioned devices/units, the specific functions and technical effects thereof are based on the same concept as those of the embodiment of the method of the present application, and specific reference may be made to the part of the embodiment of the method, which is not described herein again.
It should be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional units and modules is only used for illustration, and in practical applications, the above function distribution may be performed by different functional units and modules as needed, that is, the internal structure of the apparatus may be divided into different functional units or modules to perform all or part of the above described functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Fig. 6 is a schematic structural diagram of an on-board controller according to an embodiment of the present application. As shown in fig. 6, the on-vehicle controller 6 of this embodiment includes: at least one processor 60 (only one shown in fig. 6), a memory 61, and a computer program 62 stored in the memory 61 and operable on the at least one processor 60, wherein the processor 60 executes the computer program 62 to implement the steps in any of the above-mentioned embodiments of the method for adjusting the position of the vehicle gear hard dead center.
The onboard controller may include, but is not limited to, a processor 60, a memory 61. Those skilled in the art will appreciate that fig. 6 is merely an example of the onboard controller 6, and does not constitute a limitation of the onboard controller 6, and may include more or less components than those shown, or combine certain components, or different components, such as input output devices, network access devices, etc.
The Processor 60 may be a Central Processing Unit (CPU), and the Processor 60 may be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 61 may in some embodiments be an internal storage unit of the onboard controller 6, such as an internal memory of the onboard controller 6. The memory 61 may also be an external storage device of the vehicle-mounted controller 6 in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the vehicle-mounted controller 1. Further, the memory 61 may also include both an internal storage unit and an external storage device of the onboard controller 6. The memory 61 is used for storing an operating system, an application program, a BootLoader (BootLoader), data, and other programs, such as program codes of the computer programs. The memory 61 may also be used to temporarily store data that has been output or is to be output.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps in the foregoing method embodiments.
The embodiments of the present application provide a computer program product, which when running on an onboard controller, enables the onboard controller to implement the steps in the above method embodiments when executed.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be implemented by a computer program, which can be stored in a computer readable storage medium and can implement the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include at least: any entity or device capable of carrying computer program code to an in-vehicle controller, recording medium, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, and software distribution medium. Such as a usb-disk, a removable hard disk, a magnetic or optical disk, etc. In certain jurisdictions, computer-readable media may not be an electrical carrier signal or a telecommunications signal in accordance with legislative and patent practice.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A position adjusting method for a vehicle gear hard dead center is characterized by comprising the following steps:
when the fact that the vehicle is shifted to a set gear and a shifting fork of the vehicle reaches the current gear engaging position of the set gear is detected, the shifting fork is controlled to move towards a set direction; the setting direction refers to a direction from a current gear engaging position of the setting gear to a hard stop point of the setting gear;
and if the shifting fork reaches the hard stop point within the first set time, adjusting the stored reference position of the hard stop point according to the position information of the hard stop point.
2. The position adjusting method according to claim 1, wherein the controlling the shift fork to move in a set direction includes:
acquiring torque and torque gradient of a driving motor of the vehicle;
and if the torque is smaller than a first threshold value and the torque gradient is smaller than a second threshold value, controlling the shifting fork to move towards the set direction.
3. The position adjustment method according to claim 2, characterized by, after the acquiring the torque and the torque gradient of the drive motor of the vehicle, further comprising:
and if the torque is greater than or equal to the first threshold value or the torque gradient is greater than or equal to the second threshold value, delaying for a second set time, and then returning to the step of acquiring the torque and the torque gradient of the driving motor of the vehicle.
4. The position adjusting method according to claim 1, further comprising, after the controlling the shift fork to move in the set direction:
if the shifting fork does not reach the hard stop point within the first set time, accumulating the times of the shifting fork moving to the set direction;
if the frequency is smaller than a third threshold value, controlling the shifting fork to return to the current gear engaging position, and controlling the shifting fork to continue to move towards the set direction after detecting that the shifting fork reaches the current gear engaging position;
and if the shifting fork reaches the hard stop point within the first set time, adjusting the stored reference position according to the position information of the hard stop point.
5. The position adjustment method according to claim 1, wherein the adjusting the stored reference position of the hard dead center based on the position information of the hard dead center comprises:
detecting whether the position information of the hard stop point meets a set condition;
and if the position information of the hard stop point meets the set condition, adjusting the stored reference position of the hard stop point.
6. The position adjusting method according to claim 5, wherein the position information includes position coordinates of the hard stop and a distance by which the shift fork moves to the hard stop, and the detecting whether the position information of the hard stop satisfies a set condition includes:
and if the position coordinate is in a first set range or the distance is in a second set range, determining that the position information of the hard stop point meets the set condition.
7. The position adjustment method according to any one of claims 1 to 6, further comprising, after the adjusting the stored reference position of the hard dead center based on the position information of the hard dead center:
and controlling the shifting fork to return to the current gear engaging position of the set gear.
8. A position adjustment device for a gear position hard dead center of a vehicle, comprising:
the first control unit is used for controlling a shifting fork of a vehicle to move towards a set direction when the fact that the vehicle is shifted to a set gear and the shifting fork of the vehicle reaches the current gear engaging position of the set gear is detected; the setting direction refers to a direction from a current gear engaging position of the setting gear to a hard stop point of the setting gear;
and a first adjusting unit for adjusting the stored reference position of the hard stop point according to the position information of the hard stop point if the shifting fork reaches the hard stop point within a first set time.
9. An on-board controller comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor when executing the computer program implements the method of vehicle range hard stop position adjustment according to any one of claims 1 to 7.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out a method of adjusting a position of a vehicle gear hard stop according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211363109.2A CN115789239A (en) | 2022-11-02 | 2022-11-02 | Position adjusting method and device for hard stop point of vehicle gear, and vehicle-mounted controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211363109.2A CN115789239A (en) | 2022-11-02 | 2022-11-02 | Position adjusting method and device for hard stop point of vehicle gear, and vehicle-mounted controller |
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| CN115789239A true CN115789239A (en) | 2023-03-14 |
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| CN202211363109.2A Pending CN115789239A (en) | 2022-11-02 | 2022-11-02 | Position adjusting method and device for hard stop point of vehicle gear, and vehicle-mounted controller |
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| WO2022062572A1 (en) * | 2020-09-23 | 2022-03-31 | 中国第一汽车股份有限公司 | Multidimensional-based gear shifting control method and device, vehicle and medium |
| CN114704628A (en) * | 2021-04-07 | 2022-07-05 | 长城汽车股份有限公司 | Gear shifting control method and device of two-gear reduction box and vehicle |
| CN114706297A (en) * | 2021-04-01 | 2022-07-05 | 长城汽车股份有限公司 | Control method for offline detection of reduction gearbox and terminal equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022062572A1 (en) * | 2020-09-23 | 2022-03-31 | 中国第一汽车股份有限公司 | Multidimensional-based gear shifting control method and device, vehicle and medium |
| CN114706297A (en) * | 2021-04-01 | 2022-07-05 | 长城汽车股份有限公司 | Control method for offline detection of reduction gearbox and terminal equipment |
| CN114704628A (en) * | 2021-04-07 | 2022-07-05 | 长城汽车股份有限公司 | Gear shifting control method and device of two-gear reduction box and vehicle |
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