CN116816920A - Flow dead zone interval verification method and device, vehicle and storage medium - Google Patents
Flow dead zone interval verification method and device, vehicle and storage medium Download PDFInfo
- Publication number
- CN116816920A CN116816920A CN202310795293.6A CN202310795293A CN116816920A CN 116816920 A CN116816920 A CN 116816920A CN 202310795293 A CN202310795293 A CN 202310795293A CN 116816920 A CN116816920 A CN 116816920A
- Authority
- CN
- China
- Prior art keywords
- flow
- dead zone
- current value
- value
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000012795 verification Methods 0.000 title claims abstract description 31
- 238000006073 displacement reaction Methods 0.000 claims abstract description 59
- 238000004590 computer program Methods 0.000 claims description 16
- 230000002159 abnormal effect Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a flow dead zone interval verification method, a device, a vehicle and a storage medium. The method comprises the following steps: acquiring a flow dead zone interval of a gear-shifting flow electromagnetic valve in a double-clutch gearbox; the flow dead zone section is a current section corresponding to the gear shifting flow electromagnetic valve when the oil flow is 0; determining a target current value according to the flow dead zone section and a preset current deviation value; after controlling the vehicle to be in a target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the target current value, and detecting the displacement variation of a shifting fork device; and verifying the flow dead zone interval according to the displacement variation. By the technical scheme provided by the embodiment of the invention, the correctness of the dead zone characteristic data of the gear shifting flow electromagnetic valve can be effectively verified, and the outflow of the fault gear shifting flow electromagnetic valve is prevented.
Description
Technical Field
The present invention relates to the field of data processing technologies, and in particular, to a method and apparatus for verifying a traffic dead zone interval, a vehicle, and a storage medium.
Background
The double-clutch gearbox applies controllable gear shifting force to the gear shifting fork through pressure and flow generated by a gear shifting pressure electromagnetic valve and a gear shifting flow electromagnetic valve in the hydraulic valve body, so that gear shifting operation of a vehicle is realized. The gear shifting flow electromagnetic valve needs to be subjected to bench test after the gearbox assembly is offline, and whether the characteristic data written by the valve body and the valve body function meet the offline standard is verified.
In a current-flow characteristic curve of the gear-shifting flow electromagnetic valve, current for controlling a valve body corresponds to oil flow passing through the valve body one by one, wherein the current-flow characteristic curve is a nonlinear U-shaped curve, a flow dead zone interval exists when the control flow is reversed, and the flow dead zone interval is a current interval in which the valve body flow is always zero, namely the valve body flow is always zero in the current interval. The two sides of the flow dead zone interval correspond to two gear shifting directions, the control of the flow dead zone interval determines the basic gear shifting function, so that the dead zone characteristic of the gear shifting flow electromagnetic valve in the valve body is an important detection item, whether the dead zone characteristic of the gear shifting flow electromagnetic valve meets the requirement or not needs to be verified through specific gear shifting action, and the usability of the valve body is judged.
Disclosure of Invention
The invention provides a flow dead zone interval verification method, a device, a vehicle and a storage medium, which can effectively verify the correctness of dead zone characteristic data of a gear shifting flow electromagnetic valve and prevent the flow of the fault gear shifting flow electromagnetic valve.
According to an aspect of the present invention, there is provided a flow dead zone interval verification method, including:
acquiring a flow dead zone interval of a gear-shifting flow electromagnetic valve in a double-clutch gearbox; the flow dead zone section is a current section corresponding to the gear shifting flow electromagnetic valve when the oil flow is 0;
determining a target current value according to the flow dead zone section and a preset current deviation value;
after controlling the vehicle to be in a target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the target current value, and detecting the displacement variation of a shifting fork device;
and verifying the flow dead zone interval according to the displacement variation.
According to another aspect of the present invention, there is provided a flow dead zone interval verification apparatus including:
the flow dead zone interval acquisition module is used for acquiring a flow dead zone interval of a gear-shifting flow electromagnetic valve in the double-clutch gearbox; the flow dead zone section is a current section corresponding to the gear shifting flow electromagnetic valve when the oil flow is 0;
the target current value determining module is used for determining a target current value according to the flow dead zone interval and a preset current deviation value;
the displacement variation detection module is used for controlling the current value of the gear shifting flow electromagnetic valve to be the target current value after controlling the vehicle to be in gear and detecting the displacement variation of the shifting fork device;
and the flow dead zone interval verification module is used for verifying the flow dead zone interval according to the displacement variation.
According to another aspect of the present invention, there is provided a vehicle including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the traffic dead zone interval verification method according to any one of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to implement the flow dead zone interval verification method according to any one of the embodiments of the present invention when executed.
According to the flow dead zone interval verification scheme, a flow dead zone interval of a gear-shifting flow electromagnetic valve in a double-clutch gearbox is obtained; the flow dead zone section is a current section corresponding to the gear shifting flow electromagnetic valve when the oil flow is 0; determining a target current value according to the flow dead zone section and a preset current deviation value; after controlling the vehicle to be in a target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the target current value, and detecting the displacement variation of a shifting fork device; and verifying the flow dead zone interval according to the displacement variation. By the technical scheme provided by the embodiment of the invention, the correctness of the dead zone characteristic data of the gear shifting flow electromagnetic valve can be effectively verified, and the outflow of the fault gear shifting flow electromagnetic valve is prevented.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a flow dead zone interval verification method according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a current-flow characteristic provided by an embodiment of the present invention;
FIG. 3 is a schematic flow dead zone interval verification diagram of a shift flow solenoid valve provided by an embodiment of the invention;
fig. 4 is a schematic structural diagram of a flow dead zone interval verification device according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a vehicle implementing a flow dead zone interval verification method according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a flowchart of a flow dead zone interval verification method according to an embodiment of the present invention, where the method may be implemented by a flow dead zone interval verification device, which may be implemented in hardware and/or software, and the flow dead zone interval verification device may be configured in a vehicle. As shown in fig. 1, the method includes:
s110, acquiring a flow dead zone section of a gear-shifting flow electromagnetic valve in a double-clutch gearbox; the flow dead zone section is a current section corresponding to the gear shifting flow electromagnetic valve when the oil flow is 0.
The hydraulic valve body in the double-clutch gearbox comprises a gear shifting pressure electromagnetic valve and a gear shifting flow electromagnetic valve, a bench test is required to be carried out after the gearbox assembly is taken off line before the gear shifting flow electromagnetic valve is put into formal use, and whether characteristic data of the gear shifting flow electromagnetic valve meet the standard of taking off line is verified.
In the embodiment of the invention, a flow dead zone interval of a gear-shifting flow electromagnetic valve in a double-clutch gearbox is obtained, wherein the flow dead zone interval is a current interval corresponding to the time when the oil flow of the gear-shifting flow electromagnetic valve is 0, and it is understood that no matter how much current value is in the flow dead zone interval, the oil flow of the corresponding gear-shifting flow electromagnetic valve is always 0. For example, the flow dead zone of the shift flow solenoid valve input by the user may be directly obtained, and the flow dead zone may be read from the current-flow characteristic curve of the shift flow solenoid valve.
Optionally, obtaining a flow dead zone interval of the shift flow solenoid valve includes: acquiring a current-flow characteristic curve of the gear-shifting flow electromagnetic valve; and determining a flow dead zone section of the shifted flow solenoid valve based on the current-flow characteristic curve. Illustratively, the entire valve body system is powered up and the TCU software and current-flow characteristic data of the shift flow solenoid valve in the valve body system are written by the diagnostic host computer. Fig. 2 is a schematic diagram of a current-flow characteristic curve according to an embodiment of the present invention. And analyzing the current-flow characteristic curve, and when the oil flow is determined to be 0 from the current-flow characteristic curve, taking a section formed by the lower current-limiting value CurrentLow and the upper current-limiting value Currenthigh as a flow dead zone section, wherein the lower current-limiting value CurrentLow and the upper current-limiting value Currenthigh correspond to the lower current-limiting value CurrentLow and the upper current-limiting value Currenthigh. It can be understood that the lower current limit value CurrentLow is the left boundary value of the flow dead zone section, and the upper current limit value CurrentHigh is the right boundary value of the flow dead zone section.
S120, determining a target current value according to the flow dead zone section and a preset current deviation value.
For example, the left end point of the flow dead zone may be determined, the current value corresponding to the left end point may be used as the lower limit current value, the sum of the lower limit current value and the preset current deviation value may be calculated, and the sum of the lower limit current value and the preset current deviation value may be used as the target current value. Further, for example, a right end point of the flow dead zone may be determined, a current value corresponding to the right end point may be used as the upper limit current value, a difference between the upper limit current value and a preset current deviation value may be calculated, and the difference between the upper limit current value and the preset current deviation value may be used as the target current value.
And S130, after controlling the vehicle to be in a target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the target current value, and detecting the displacement variation of the shifting fork device.
The target gear is the gear with the maximum gear shifting pressure of the liquid flow electromagnetic valve. After the vehicle is controlled to be in a target gear, the input current of the gear shifting flow electromagnetic valve is controlled to be a target current value, and after a preset time period (such as 10 s), the displacement variation of the shifting fork device is detected through the displacement sensor. The displacement variation can be understood as the movement displacement of the shifting fork device after the input current of the shifting flow electromagnetic valve is changed from 0 to the target current value.
Optionally, determining the target current value according to the flow dead zone interval and a preset current deviation value includes: determining a lower limit current value of the flow dead zone section; determining a first target current value according to the lower limit current value and a preset current deviation value; wherein the first target current value is a sum of the lower limit current value and the current deviation value; after controlling the vehicle to be in a target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the target current value, and detecting the displacement variation of a shifting fork device, wherein the method comprises the following steps of: when the vehicle is controlled to be in a first target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the first target current value, and detecting the displacement variation of the shifting fork device.
For example, the control vehicle is engaged in 5 gear open loop, at which time the shift pressure of the shift flow solenoid valve is 15Bar, which is the maximum shift pressure. Waiting for 5s, and controlling the current value of the gear-shifting flow electromagnetic valve to be a first target current value after the actual gear of the vehicle is changed to 5 gears, wherein the first target current value is the sum of a lower limit current value CurrentLow and a current deviation value delta of a flow dead zone section, namely, the first target current value=CurrentLow+ [ delta ]. It is understood that by controlling the current value of the shift flow solenoid valve to be the first target current value, the shift pressure of the shift pressure solenoid valve corresponding to the first target current value may be given, so that the shift flow solenoid valve is controlled to perform the shift off operation based on the shift pressure, even if the shift fork device is relatively displaced to achieve the shift off. Therefore, the displacement variation of the fork device can be detected within the time t0 when the current value of the shift flow solenoid valve is controlled to be the target current value.
Optionally, determining the target current value according to the flow dead zone interval and a preset current deviation value includes: determining an upper limit current value of the flow dead zone section; determining a second target current value according to the upper limit current value and a preset current deviation value; wherein the second target current value is a difference between the upper limit current value and the current deviation value; after controlling the vehicle to be in a target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the target current value, and detecting the displacement variation of a shifting fork device, wherein the method comprises the following steps of: when the vehicle is controlled to be in a second target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the second target current value, and detecting the displacement variation of a shifting fork device; the shifting fork device corresponding to the first target gear is shifted in the opposite direction.
For example, the vehicle is controlled to shift into 1 gear with open loop, and at this time, the shift pressure of the shift flow solenoid valve is 15Bar, which is the maximum shift pressure. Waiting for 5s, and controlling the current value of the gear-shifting flow electromagnetic valve to be a second target current value after the actual gear of the vehicle is changed to 1 gear, wherein the second target current value is the difference between the upper limit current value Currenthigh and the current deviation value delta of the flow dead zone section, namely the second target current value=Currenthigh-delta. It is understood that by controlling the current value of the shift flow solenoid valve to be the second target current value, the shift pressure of the shift pressure solenoid valve corresponding to the second target current value can be given, so that the shift flow solenoid valve is controlled to perform the shift off operation based on the shift pressure, even if the shift fork device is relatively displaced to achieve the shift off. Therefore, the displacement variation of the fork device can be detected within the time t0 when the current value of the shift flow solenoid valve is controlled to be the target current value. It should be noted that, the shifting direction of the shifting fork device corresponding to the second target gear is opposite to that of the shifting fork device corresponding to the first target gear. Therefore, when the current value of the control shift flow solenoid valve is the first target current value, the detected moving direction of the fork device is also opposite to the detected moving direction of the fork device when the current value of the control shift flow solenoid valve is the second target current value.
And S140, verifying the flow dead zone interval according to the displacement variation.
In the embodiment of the present invention, verifying the flow dead zone section according to the displacement variation includes: when the displacement variation is larger than a preset displacement threshold, determining that the flow dead zone interval is abnormal; and when the displacement variation is smaller than or equal to the displacement threshold, determining that the flow dead zone section is normal. After controlling the vehicle to be in a first target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the sum of a lower limit current value and the current deviation value, and determining that the flow dead zone section of the gear shifting flow electromagnetic valve is normal if the detected displacement variation of the shifting fork device is smaller than or equal to a preset displacement threshold delta; if the detected displacement variation of the shifting fork device is larger than delta, determining that the flow dead zone section of the shifting flow electromagnetic valve is abnormal, and stopping checking. Also exemplary, after controlling the vehicle to be shifted to the second target gear, controlling the current value of the shift flow solenoid valve to be the difference between the upper limit current value and the current deviation value, and if the detected displacement variation of the shift fork device is less than or equal to a preset displacement threshold delta, determining that the flow dead zone section of the shift flow solenoid valve is normal; if the detected displacement variation of the shifting fork device is larger than delta, determining that the flow dead zone section of the shifting flow electromagnetic valve is abnormal, and stopping checking.
Fig. 3 is a schematic flow dead zone interval verification diagram of a gear shifting flow solenoid valve according to an embodiment of the present invention, and the foregoing flow dead zone interval verification process may be understood with reference to fig. 3, which is not repeated in the embodiment of the present invention.
According to the flow dead zone interval verification method, the flow dead zone interval of the gear-shifting flow electromagnetic valve in the double-clutch gearbox is obtained; the flow dead zone section is a current section corresponding to the gear shifting flow electromagnetic valve when the oil flow is 0; determining a target current value according to the flow dead zone section and a preset current deviation value; after controlling the vehicle to be in a target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the target current value, and detecting the displacement variation of a shifting fork device; and verifying the flow dead zone interval according to the displacement variation. By the technical scheme provided by the embodiment of the invention, the correctness of the dead zone characteristic data of the gear shifting flow electromagnetic valve can be effectively verified, and the outflow of the fault gear shifting flow electromagnetic valve is prevented.
In some embodiments, before determining the target current value according to the flow dead zone interval and the preset current deviation value, the method further includes: determining a lower limit current value and an upper limit current value of the flow dead zone section; judging whether the difference value between the upper limit current value and the lower limit current value is larger than a preset current threshold value or not; determining a target current value according to the flow dead zone interval and a preset current deviation value, wherein the method comprises the following steps: and when the difference value between the upper limit current value and the lower limit current value is larger than the preset current threshold value, determining a target current value according to the flow dead zone section and a preset current deviation value. Optionally, the method further comprises: and when the difference value between the upper limit current value and the lower limit current value is smaller than or equal to the preset current threshold value, determining that the flow dead zone interval is abnormal. Specifically, the interval length of the flow dead zone interval is calculated according to the lower limit current value and the upper limit current value of the flow dead zone interval, wherein the difference between the upper limit current value and the lower limit current value is taken as the interval length of the flow dead zone interval, and when the interval length is smaller than or equal to a preset current threshold value (such as 50 mA), the abnormality of the flow dead zone interval can be directly determined. When the interval length is greater than the preset current threshold (e.g., 50 mA), determining a target current value according to the flow dead zone interval and the preset current deviation value, that is, executing S120-140 to further verify whether the flow dead zone interval is abnormal.
Optionally, when the flow dead zone interval of the gear-shifting flow electromagnetic valve in the dual-clutch gearbox is determined to be normal, the gear-shifting flow electromagnetic valve is indicated to meet the off-line standard, and off-line loading can be achieved. When the flow dead zone interval of the gear shifting flow electromagnetic valve is abnormal, the gear shifting flow electromagnetic valve is not verified and does not meet the offline standard, the current-flow characteristic curve of the gear shifting flow electromagnetic valve can be further learned, if the current learned characteristic curve and the actual characteristic curve of the gear shifting flow electromagnetic valve are integrally offset and the offset error is within a set threshold range, the learned characteristic curve can be used for replacing the original characteristic curve, and if the specific point offset or the integral offset of the characteristic curve exceeds the threshold range, the gear shifting flow electromagnetic valve is judged to not meet the offline condition of the assembly, and a fault part is required to return to a factory.
Example two
Fig. 4 is a schematic structural diagram of a flow dead zone interval verification device according to a second embodiment of the present invention. As shown in fig. 4, the apparatus includes:
the flow dead zone interval acquisition module 410 is used for acquiring a flow dead zone interval of a gear-shifting flow electromagnetic valve in the dual-clutch gearbox; the flow dead zone section is a current section corresponding to the gear shifting flow electromagnetic valve when the oil flow is 0;
the target current value determining module 420 is configured to determine a target current value according to the flow dead zone interval and a preset current deviation value;
the displacement variation detecting module 430 is configured to control a current value of the shift flow solenoid valve to be the target current value after controlling the vehicle to be in a target gear, and detect a displacement variation of a shift fork device;
and the flow dead zone interval verification module 440 is configured to verify the flow dead zone interval according to the displacement variation.
Optionally, the target current value determining module is configured to:
determining a lower limit current value of the flow dead zone section;
determining a first target current value according to the lower limit current value and a preset current deviation value; wherein the first target current value is a sum of the lower limit current value and the current deviation value;
the displacement variation detection module is used for:
when the vehicle is controlled to be in a first target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the first target current value, and detecting the displacement variation of the shifting fork device.
Optionally, the target current value determining module is configured to:
determining an upper limit current value of the flow dead zone section;
determining a second target current value according to the upper limit current value and a preset current deviation value; wherein the second target current value is a difference between the upper limit current value and the current deviation value;
the displacement variation detection module is used for:
when the vehicle is controlled to be in a second target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the second target current value, and detecting the displacement variation of a shifting fork device; the shifting fork device corresponding to the first target gear is shifted in the opposite direction.
Optionally, the flow dead zone interval verification module is configured to:
when the displacement variation is larger than a preset displacement threshold, determining that the flow dead zone interval is abnormal;
and when the displacement variation is smaller than or equal to the displacement threshold, determining that the flow dead zone section is normal.
Optionally, the flow dead zone interval acquisition module is configured to:
acquiring a current-flow characteristic curve of the gear-shifting flow electromagnetic valve;
and determining a flow dead zone section of the shifted flow solenoid valve based on the current-flow characteristic curve.
Optionally, the apparatus further includes:
before a target current value is determined according to the flow dead zone section and a preset current deviation value, determining a lower limit current value and an upper limit current value of the flow dead zone section;
judging whether the difference value between the upper limit current value and the lower limit current value is larger than a preset current threshold value or not;
determining a target current value according to the flow dead zone interval and a preset current deviation value, wherein the method comprises the following steps:
and when the difference value between the upper limit current value and the lower limit current value is larger than the preset current threshold value, determining a target current value according to the flow dead zone section and a preset current deviation value.
Optionally, the apparatus further includes:
and the flow dead zone section abnormality determination module is used for determining that the flow dead zone section is abnormal when the difference value of the upper limit current value and the lower limit current value is smaller than or equal to the preset current threshold value.
The flow dead zone interval verification device provided by the embodiment of the invention can execute the flow dead zone interval verification method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example III
Fig. 5 shows a schematic structural diagram of a vehicle 10 that may be used to implement an embodiment of the present invention. Vehicles 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. Vehicles may also represent various forms of mobile devices, such as personal digital assistants, cellular telephones, smart phones, wearable devices (e.g., helmets, eyeglasses, 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. 5, the vehicle 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the vehicle 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the vehicle 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the vehicle 10 to exchange information/data with other devices via a computer network such as the internet and/or various telecommunications networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 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, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as the traffic dead zone interval verification method.
In some embodiments, the flow dead zone interval verification method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the vehicle 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the flow dead zone interval verification method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the traffic dead zone interval checking method in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On 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, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out 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 implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the 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. The 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 portable 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 a vehicle 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 pointing device (e.g., a mouse or a trackball) by which a user can provide input to the vehicle. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may 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 input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background 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 background, 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. The client and server are typically 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 hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. The flow dead zone interval verification method is characterized by comprising the following steps of:
acquiring a flow dead zone interval of a gear-shifting flow electromagnetic valve in a double-clutch gearbox; the flow dead zone section is a current section corresponding to the gear shifting flow electromagnetic valve when the oil flow is 0;
determining a target current value according to the flow dead zone section and a preset current deviation value;
after controlling the vehicle to be in a target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the target current value, and detecting the displacement variation of a shifting fork device;
and verifying the flow dead zone interval according to the displacement variation.
2. The method of claim 1, wherein determining a target current value based on the flow dead zone interval and a preset current bias value comprises:
determining a lower limit current value of the flow dead zone section;
determining a first target current value according to the lower limit current value and a preset current deviation value; wherein the first target current value is a sum of the lower limit current value and the current deviation value;
after controlling the vehicle to be in a target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the target current value, and detecting the displacement variation of a shifting fork device, wherein the method comprises the following steps of:
when the vehicle is controlled to be in a first target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the first target current value, and detecting the displacement variation of the shifting fork device.
3. The method of claim 2, wherein determining a target current value based on the flow dead zone interval and a preset current bias value comprises:
determining an upper limit current value of the flow dead zone section;
determining a second target current value according to the upper limit current value and a preset current deviation value; wherein the second target current value is a difference between the upper limit current value and the current deviation value;
after controlling the vehicle to be in a target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the target current value, and detecting the displacement variation of a shifting fork device, wherein the method comprises the following steps of:
when the vehicle is controlled to be in a second target gear, controlling the current value of the gear shifting flow electromagnetic valve to be the second target current value, and detecting the displacement variation of a shifting fork device; the shifting fork device corresponding to the first target gear is shifted in the opposite direction.
4. The method of claim 1, wherein verifying the flow dead zone interval based on the displacement variation comprises:
when the displacement variation is larger than a preset displacement threshold, determining that the flow dead zone interval is abnormal;
and when the displacement variation is smaller than or equal to the displacement threshold, determining that the flow dead zone section is normal.
5. The method of claim 1, wherein obtaining a flow dead zone interval for a shift flow solenoid valve comprises:
acquiring a current-flow characteristic curve of the gear-shifting flow electromagnetic valve;
and determining a flow dead zone section of the shifted flow solenoid valve based on the current-flow characteristic curve.
6. The method of claim 1, further comprising, prior to determining a target current value based on the flow dead zone interval and a predetermined current bias value:
determining a lower limit current value and an upper limit current value of the flow dead zone section;
judging whether the difference value between the upper limit current value and the lower limit current value is larger than a preset current threshold value or not;
determining a target current value according to the flow dead zone interval and a preset current deviation value, wherein the method comprises the following steps:
and when the difference value between the upper limit current value and the lower limit current value is larger than the preset current threshold value, determining a target current value according to the flow dead zone section and a preset current deviation value.
7. The method as recited in claim 6, further comprising:
and when the difference value between the upper limit current value and the lower limit current value is smaller than or equal to the preset current threshold value, determining that the flow dead zone interval is abnormal.
8. The utility model provides a flow dead zone interval verifying attachment which characterized in that includes:
the flow dead zone interval acquisition module is used for acquiring a flow dead zone interval of a gear-shifting flow electromagnetic valve in the double-clutch gearbox; the flow dead zone section is a current section corresponding to the gear shifting flow electromagnetic valve when the oil flow is 0;
the target current value determining module is used for determining a target current value according to the flow dead zone interval and a preset current deviation value;
the displacement variation detection module is used for controlling the current value of the gear shifting flow electromagnetic valve to be the target current value after controlling the vehicle to be in gear and detecting the displacement variation of the shifting fork device;
and the flow dead zone interval verification module is used for verifying the flow dead zone interval according to the displacement variation.
9. A vehicle, characterized in that the vehicle comprises:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the traffic dead zone interval checking method of any of claims 1-7.
10. A computer readable storage medium storing computer instructions for causing a processor to implement the flow dead zone interval verification method of any one of claims 1-7 when executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310795293.6A CN116816920A (en) | 2023-06-30 | 2023-06-30 | Flow dead zone interval verification method and device, vehicle and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310795293.6A CN116816920A (en) | 2023-06-30 | 2023-06-30 | Flow dead zone interval verification method and device, vehicle and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116816920A true CN116816920A (en) | 2023-09-29 |
Family
ID=88118162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310795293.6A Pending CN116816920A (en) | 2023-06-30 | 2023-06-30 | Flow dead zone interval verification method and device, vehicle and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116816920A (en) |
-
2023
- 2023-06-30 CN CN202310795293.6A patent/CN116816920A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116816920A (en) | Flow dead zone interval verification method and device, vehicle and storage medium | |
| CN115219086B (en) | Pressure sensor identification method, device, equipment and storage medium | |
| CN110207582B (en) | Shifting fork position testing method, system, equipment and storage medium | |
| CN116626473A (en) | Testing method, device, equipment and medium for vehicle-gauge master control chip | |
| CN104181914A (en) | Automobile fault detection method and system | |
| CN114837836B (en) | Engine torque control method, device, equipment and medium | |
| CN115855480A (en) | Fault diagnosis method, device, equipment and storage medium of electromagnetic valve | |
| CN117055533A (en) | Vehicle-mounted system fault processing method, device, equipment and medium | |
| CN115060512A (en) | Fault diagnosis method, fault diagnosis device, electronic equipment and storage medium | |
| CN116677775A (en) | Vehicle gear shifting method and device, electronic equipment and storage medium | |
| CN117033861A (en) | Wheel cylinder pressure estimation method and device for hydraulic braking system | |
| CN116663295A (en) | Automatic testing method and device for clutch, upper computer, medium and system | |
| CN117681882A (en) | Gradient sensor detection method and device, vehicle and storage medium | |
| CN115144113A (en) | Clutch pressure fluctuation detection method and device and electronic equipment | |
| CN117168843A (en) | Unmanned vehicle chassis line control performance testing system, method and medium | |
| CN118046903A (en) | Method and device for processing abnormal engine rotation speed, automatic gearbox control unit and medium | |
| CN117212442A (en) | Control method and control device | |
| CN116625705A (en) | Automatic transmission off-line detection method and device, electronic equipment and storage medium | |
| CN116292011A (en) | Engine starting control method and device, electronic equipment and storage medium thereof | |
| CN117345863A (en) | AMT gear position control method and device, electronic equipment and storage medium | |
| CN116464771A (en) | Control method, device, equipment and storage medium | |
| CN117540240A (en) | Water use abnormality detection method and device, electronic equipment and storage medium | |
| CN116557517A (en) | Gear control method, device, equipment and medium | |
| CN116968759A (en) | Sensor signal processing method and device, electronic equipment and medium | |
| CN116735184A (en) | Deformation detection method and device for engine throttle valve, electronic equipment and medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |