CN115451119A - Method, device, equipment and storage medium for correcting characteristic curve of clutch - Google Patents
Method, device, equipment and storage medium for correcting characteristic curve of clutch Download PDFInfo
- Publication number
- CN115451119A CN115451119A CN202211257397.3A CN202211257397A CN115451119A CN 115451119 A CN115451119 A CN 115451119A CN 202211257397 A CN202211257397 A CN 202211257397A CN 115451119 A CN115451119 A CN 115451119A
- Authority
- CN
- China
- Prior art keywords
- torque
- deviation
- low
- correction
- index value
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000012937 correction Methods 0.000 claims description 153
- 239000000446 fuel Substances 0.000 abstract description 6
- 230000004048 modification Effects 0.000 description 12
- 238000012986 modification Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000002715 modification method Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
- F16H59/56—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the main clutch
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H2059/147—Transmission input torque, e.g. measured or estimated engine torque
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H2061/0075—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by a particular control method
- F16H2061/0087—Adaptive control, e.g. the control parameters adapted by learning
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention belongs to the technical field of clutches, and discloses a method, a device, equipment and a storage medium for correcting a characteristic curve of a clutch. According to the method, the low-torque section curve in the clutch characteristic curve is obtained, then the torque deviation corresponding to the low-torque section curve is obtained, and when the torque deviation is larger than a preset threshold value, the low-torque section curve is corrected according to the deviation torque point in the low-torque section curve. According to the method, the torque deviation corresponding to the low-torque section curve is obtained, when the torque deviation is larger than the preset threshold value, the characteristic curve of the clutch in the low-torque section needs to be corrected, at the moment, the characteristic curve of the clutch in the low-torque section is corrected according to the deviation torque point in the low-torque section curve, so that the characteristic curve of the clutch in the low-torque section can be accurately corrected, the characteristic curve of the clutch in the low-torque section is more attached to an engine-gearbox power system, and the driving performance and the fuel economy of a vehicle are improved.
Description
Technical Field
The present invention relates to the field of clutch technologies, and in particular, to a method, an apparatus, a device, and a storage medium for correcting a clutch characteristic curve.
Background
For a vehicle with a transmission system of a clutch, after the vehicle is delivered to a customer from a production line, the characteristic of the clutch system changes along with the continuous increase of driving mileage, and generally, the characteristic curve of the clutch changes greatly within the first twenty thousand kilometers; then, the characteristic curve of the clutch is stable to about eighty thousand kilometers; after that, the clutch characteristic curve is changed greatly. If the change of the clutch characteristic curve cannot be identified in time and corrected adaptively, the drivability and fuel economy of the vehicle are affected. Therefore, how to accurately correct the clutch characteristic curve of the low torque section becomes an urgent problem to be solved.
The above is only for the purpose of assisting understanding of the technical solution of the present invention, and does not represent an admission that the above is the prior art.
Disclosure of Invention
The invention mainly aims to provide a method, a device, equipment and a storage medium for correcting a clutch characteristic curve, and aims to solve the technical problem of accurately correcting the clutch characteristic curve of a low-torque section.
In order to achieve the above object, the present invention provides a method for correcting a clutch characteristic curve, including the steps of:
acquiring a low-torque section curve in a clutch characteristic curve;
acquiring torque deviation corresponding to the low-torque section curve;
and when the torque deviation is larger than a preset threshold value, correcting the low-torque section curve according to the deviation torque point in the low-torque section curve.
Optionally, the step of obtaining the torque deviation corresponding to the low torque section curve specifically includes:
obtaining engine torque corresponding to a vehicle to be processed;
determining a nominal clutch torque according to the low torque segment curve;
and determining the torque deviation corresponding to the low torque section curve according to the engine torque and the nominal clutch torque.
Optionally, when the torque deviation is greater than a preset threshold, the step of correcting the low-torque section curve according to the deviation torque point in the low-torque section curve specifically includes:
when the torque deviation is larger than a preset threshold value, determining a deviation torque point in the low-torque section curve according to the torque deviation;
acquiring a deviation torque point index value of the torque deviation point in the low torque section curve;
and correcting the low-torque section curve according to the deviation torque point index value.
Optionally, the step of obtaining a deviation torque point index value of the torque deviation point in the low torque segment curve specifically includes:
acquiring a target torque of the torque deviation point in the low torque section curve;
acquiring a reference torque set corresponding to each reference point in the low-torque section curve;
and comparing the target torque with each reference torque in the reference torque set, and determining a deviation torque point index value of the torque deviation point in the low-torque section curve according to the comparison result.
Optionally, the step of correcting the low torque section curve according to the deviation torque point index value specifically includes:
determining a correction point index value of the low-torque section curve according to the deviation torque point index value;
acquiring a correction value corresponding to the index value of the correction point;
and correcting the low-torque section curve according to the correction value.
Optionally, the step of obtaining a correction value corresponding to the correction point index value specifically includes:
acquiring an original value corresponding to the correction point index value from the low-torque section curve;
acquiring a maximum index value corresponding to a maximum torque value in the low-torque section curve;
and determining a correction value corresponding to the correction point index value according to the torque deviation, the original value, the deviation torque point index value and the maximum index value.
Optionally, the correction value corresponding to the correction point index value includes a first correction value and a second correction value;
the step of determining a correction value corresponding to the correction point index value according to the torque deviation, the original value, the deviation torque point index value, and the maximum index value specifically includes:
determining a first correction value corresponding to the correction point index value according to the torque deviation, the original value, the deviation torque point index value and the maximum index value through a first preset formula, wherein the first preset formula is as follows:
T NewPoint(N+K) ＝T OldPoint(N+K) +T Error *Fator*(IDXMAX-N-K)/(IDXMAX-N)
in the formula, T NewPoint(N+K) Indicating a first correction value corresponding to the correction point index value, N + K indicating the correction point index value, T OldPoint(N+K) Representing the original value, T, corresponding to the index value of the correction point Error Representing a torque deviation, rotor representing a correction coefficient, N representing a deviation torque point index value, and IDXMAX representing a maximum index value;
determining a second correction value corresponding to the correction point index value according to the torque deviation, the original value and the deviation torque point index value through a second preset formula, wherein the second preset formula is as follows:
T NewPoint(N-K) ＝T OldPoint(N-K) +T Error *Fator*K/N
in the formula, T NewPoint(N-K) Indicating a second correction value corresponding to the correction point index value, N-K indicating the correction point index value, T OldPoint(N-K) Representing the original value, T, corresponding to the index value of the correction point Error Denotes a torque deviation, actor denotes a correction coefficient, and N denotes a deviation torque point index value。
In order to achieve the above object, the present invention provides a clutch characteristic curve correction device including:
the curve acquisition module is used for acquiring a low-torque section curve in a clutch characteristic curve;
the deviation obtaining module is used for obtaining torque deviation corresponding to the low-torque section curve;
and the curve correction module is used for correcting the low-torque section curve according to the deviation torque point in the low-torque section curve when the torque deviation is larger than a preset threshold value.
Further, to achieve the above object, the present invention also proposes a correction device of a clutch characteristic curve, comprising: a memory, a processor and a clutch characteristic curve modification program stored on the memory and executable on the processor, the clutch characteristic curve modification program being configured to implement the steps of the clutch characteristic curve modification method as described above.
In order to achieve the above object, the present invention further provides a storage medium having a clutch characteristic curve correction program stored thereon, wherein the clutch characteristic curve correction program is executed by a processor to realize the steps of the clutch characteristic curve correction method as described above.
According to the method, the low-torque section curve in the clutch characteristic curve is obtained, then the torque deviation corresponding to the low-torque section curve is obtained, and when the torque deviation is larger than a preset threshold value, the low-torque section curve is corrected according to the deviation torque point in the low-torque section curve. According to the method, the torque deviation corresponding to the low-torque section curve is obtained, when the torque deviation is larger than the preset threshold value, the characteristic curve of the clutch in the low-torque section needs to be corrected, at the moment, the characteristic curve of the clutch in the low-torque section is corrected according to the deviation torque point in the low-torque section curve, so that the characteristic curve of the clutch in the low-torque section can be accurately corrected, the characteristic curve of the clutch in the low-torque section is more attached to an engine-gearbox power system, and the driving performance and the fuel economy of a vehicle are improved.
Drawings
Fig. 1 is a schematic configuration diagram of a device for correcting a clutch characteristic curve in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a first embodiment of a method for modifying a clutch characteristic according to the present invention;
FIG. 3 is a schematic diagram of a clutch characteristic curve according to an embodiment of the method for modifying a clutch characteristic curve of the present invention;
FIG. 4 is a schematic flow chart illustrating a method for modifying a clutch characteristic according to a second embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating a method for modifying a clutch characteristic according to a third embodiment of the present invention;
FIG. 6 is a graphical representation of a modified low torque segment curve according to an embodiment of the method for modifying a clutch characteristic of the present invention;
fig. 7 is a block diagram showing a first embodiment of a clutch characteristic curve correction apparatus according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a device for correcting a clutch characteristic curve of a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the correction device of the clutch characteristic curve may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (Wi-Fi) interface). The Memory 1005 may be a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001 described previously.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the modification device of the clutch characteristic, and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a storage medium, may include an operating system, a network communication module, a user interface module, and a correction program of a clutch characteristic curve.
In the correction device of the clutch characteristic curve shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 of the clutch characteristic curve correction device according to the present invention may be provided in a clutch characteristic curve correction device that calls a clutch characteristic curve correction program stored in the memory 1005 via the processor 1001 and executes a clutch characteristic curve correction method according to an embodiment of the present invention.
Based on the above correction device for the clutch characteristic curve, an embodiment of the present invention provides a correction method for the clutch characteristic curve, referring to fig. 2, and fig. 2 is a flowchart illustrating a first embodiment of the correction method for the clutch characteristic curve of the present invention.
In this embodiment, the method for correcting the clutch characteristic curve includes the steps of:
step S10: acquiring a low-torque section curve in a clutch characteristic curve;
it should be noted that the executing body of the present embodiment may be a computing service device with data processing and network communication, such as a microprocessor, a central processing unit, etc., or an electronic device or a clutch characteristic curve correcting device capable of implementing the above functions. The present embodiment and the following embodiments will be described below by taking the above-described clutch characteristic curve correction device as an example.
It can be understood that the clutch characteristic curve can be fit by a plurality of reference points, and specifically, referring to fig. 3, fig. 3 is a schematic diagram of the clutch characteristic curve according to an embodiment of the method for modifying the clutch characteristic curve of the present invention. As shown in fig. 3, the clutch characteristic curve in fig. 3 is fitted from several Reference points (Reference points), the abscissa u may be pressure or position, the ordinate T is torque, and the torque unit is NM.
It should be understood that the low torque segment curve refers to a curve corresponding to a low torque segment in a clutch characteristic curve, and a specific torque value corresponding to the low torque segment is not specifically limited in this embodiment.
In a specific implementation, after acquiring a low-torque section curve in a clutch characteristic curve, identifying a low-torque section clutch characteristic curve adaptive operating condition may include: 1. activation of a Creep working condition; 2. the engine speed is above the idle speed; 3. the change rate of the engine speed is stable; 4. the clutch torque is greater than the TP torque; 5. the clutch position or pressure rate of change is stable; 6. the vehicle speed is greater than a certain value and can be set to be 1Km/h; 7. the difference between the rotating speeds of the clutch and the engine is larger than a certain value and can be set to be 30rpm; 8. the gearbox and the engine have no fault; 9. the water temperature of the engine is normal; 10. the target gear is in place; 11. the clutch is not in an over-temperature state; 12. the adaptive time is greater than a certain value from the last trigger. And when the whole vehicle state at the current moment is identified to meet the self-adaptive condition, entering the next stage, namely acquiring the torque deviation corresponding to the low-torque section curve.
Step S20: acquiring torque deviation corresponding to the low-torque section curve;
further, in order to accurately determine the torque deviation, in the present embodiment, the step S20 includes: obtaining engine torque corresponding to a vehicle to be processed; determining a nominal clutch torque according to the low torque segment curve; and determining the torque deviation corresponding to the low torque section curve according to the engine torque and the nominal clutch torque.
It can be understood that the engine torque corresponding to the vehicle to be treated can be calculated by the following formula:
wherein T is EngTrans Torque actually applied to the clutch end for the engine; t is ActualEng To receive actual torque from the engine; j. the design is a square Eng Is the engine moment of inertia;
is the rate of change of engine speed; k is Eng Is the engine compartment air damping coefficient; n is a radical of an alkyl radical Eng Is the engine speed.
It should be understood that the nominal clutch torque is not the actual torque transmitted by the clutch, but the torque calculated from the clutch characteristic curve of the low torque section, and the specific formula is:
T Cluth ＝f(p)+T TempOffset
wherein, T Cluth Nominal clutch torque; f (p) is torque obtained by reversely checking a clutch characteristic curve of the low-torque section according to the clutch pressure or position, namely the torque can be obtained by checking the clutch characteristic curve of the low-torque section according to the known clutch pressure or position; t is a unit of TempOffset And searching two clutch characteristic curves for the torque deviation between the current clutch temperature and the temperature corresponding to the clutch characteristic curve of the low-torque section which is back-checked, namely knowing the current clutch temperature and the temperature corresponding to the clutch characteristic curve of the low-torque section, and obtaining the torque deviation between the two clutch characteristic curves.
In a specific implementation, a torque deviation corresponding to a curve of a low torque segment can be determined according to an engine torque and the nominal clutch torque, and a specific calculation formula is as follows:
wherein, T Error For torque deviation, T EngTrans As engine torque, T Cluth Is the nominal clutch torque.
Step S30: and when the torque deviation is larger than a preset threshold value, correcting the low-torque section curve according to the deviation torque point in the low-torque section curve.
It can be understood that the preset threshold is a preset threshold, and the specific value can be set according to the actual situation, which is not limited in this embodiment.
It should be understood that the deviation torque point in the low torque segment curve refers to the point in the low torque segment curve where there is a torque deviation, i.e., the point where correction is needed.
In a specific implementation, when the torque deviation is greater than a preset threshold, it is considered that the clutch characteristic curve has a deviation in a low-torque section, and self-adaptation is required, that is, the curve in the low-torque section needs to be corrected.
In the embodiment, the low torque section curve in the clutch characteristic curve is obtained, then the torque deviation corresponding to the low torque section curve is obtained, and when the torque deviation is greater than the preset threshold value, the low torque section curve is corrected according to the deviation torque point in the low torque section curve. In this embodiment, the torque deviation corresponding to the low-torque section curve is obtained, and when the torque deviation is greater than the preset threshold, it is described that the clutch characteristic curve of the low-torque section needs to be corrected, and at this time, the low-torque section curve is corrected according to the deviation torque point in the low-torque section curve, so that the clutch characteristic curve of the low-torque section can be accurately corrected, the low-torque section clutch characteristic curve is more attached to an engine-transmission power system, and the drivability and the fuel economy of a vehicle are improved.
Referring to fig. 4, fig. 4 is a flowchart illustrating a clutch characteristic curve modification method according to a second embodiment of the present invention.
Based on the first embodiment described above, in the present embodiment, the step S30 includes:
step S301: when the torque deviation is larger than a preset threshold value, determining a deviation torque point in the low-torque section curve according to the torque deviation;
it should be understood that the present embodiment can calculate the deviation torque point in the curve of the low torque segment by the following formula:
wherein, T ErrorPoint As a deviating torque point, T, in the curve of the low torque segment Error The torque deviation corresponding to the curve of the low torque section.
Step S302: acquiring a deviation torque point index value of the torque deviation point in the low torque section curve;
it should be noted that the index value of the deviation torque point refers to an index value of the deviation torque point in a low torque segment curve, and since the low torque segment curve can be formed by fitting a plurality of reference points, the torque deviation point can be found to be located at the several reference points, which is equivalent to the index value of the deviation torque point.
Further, in order to accurately determine the deviation torque point index value, in the present embodiment, the step S302 includes: acquiring a target torque of the torque deviation point in the low torque section curve; acquiring a reference torque set corresponding to each reference point in the low-torque section curve; and comparing the target torque with each reference torque in the reference torque set, and determining a deviation torque point index value of the torque deviation point in the low torque section curve according to the comparison result.
The target torque is a torque at the torque deviation point on the low torque segment curve, and the reference torque set is a set of torques corresponding to the respective reference points on the low torque segment curve.
It can be understood that, since the curve of the low torque segment generally increases monotonically, that is, the torque increases monotonically, after comparing the target torque with each reference torque in the reference torque set, the comparison result may be obtained as to which reference torque in the reference torque set the target torque is the same as or has a smaller difference from the reference torque set, and then obtaining the index value corresponding to the reference torque, that is, the offset torque point index value. For example: the target torque is 10, the reference torque set is [2,3,4,5,6,7,8,9,10,11], and the offset torque point index value is "10" at the position in the reference torque set, i.e., 9.
Step S303: and correcting the low-torque section curve according to the deviation torque point index value.
In a specific implementation, the point needing to be corrected on the low-torque section curve can be found according to the deviation torque point index value, and then the low-torque section curve is corrected.
In the embodiment, when the torque deviation is greater than the preset threshold value, a deviation torque point in the low-torque section curve is determined according to the torque deviation, then a deviation torque point index value of the torque deviation point in the low-torque section curve is obtained, and then the low-torque section curve is corrected according to the deviation torque point index value. In the embodiment, the deviation torque point index value of the torque deviation point in the low-torque section curve is obtained, and the point corresponding to the deviation torque point index value is corrected, so that the point needing to be corrected can be accurately positioned, the curve correction time is reduced, and the clutch characteristic curve of the low-torque section can be accurately corrected.
Referring to fig. 5, fig. 5 is a flowchart illustrating a method for modifying a clutch characteristic curve according to a third embodiment of the present invention.
Based on the foregoing embodiments, in this embodiment, the step S303 includes:
step S3031: determining a correction point index value of the low-torque section curve according to the deviation torque point index value;
it can be understood that, in order to more accurately correct the clutch characteristic curve of the low torque section, in addition to correcting the point corresponding to the deviation torque point index value, a plurality of points before and after the point can be simultaneously corrected, when the deviation torque point index value is N, the corrected point index values can be N + K and N-K, and K is any natural number, such as 0,1, 2 \8230, 8230
Step S3032: acquiring a correction value corresponding to the index value of the correction point;
the correction value is a value to which the torque of the reference point corresponding to the correction point index value needs to be corrected, that is, the original value corresponding to the correction point index value needs to be changed to the correction value.
Further, in order to accurately determine the correction value, in this embodiment, the step S3032 includes: obtaining an original value corresponding to the correction point index value from the low-torque section curve; acquiring a maximum index value corresponding to a maximum torque value in the low-torque section curve; and determining a correction value corresponding to the correction point index value according to the torque deviation, the original value, the deviation torque point index value and the maximum index value.
It should be understood that the raw value refers to the torque value of the reference point in the low torque segment curve corresponding to the corrected point index value. The maximum index value is an index value corresponding to the maximum torque value in the curve of the low torque section, and can be marked as IDXMAX, and for a common passenger car, the maximum torque value is not suitable to exceed 60Nm. This embodiment may use the TP point as the 0 th torque reference point, and the TP point is the clutch half-engagement point.
Further, in order to accurately determine the correction value, in this embodiment, the step of determining the correction value corresponding to the correction point index value according to the torque deviation, the original value, the deviation torque point index value, and the maximum index value specifically includes: determining a first correction value corresponding to the correction point index value according to the torque deviation, the original value, the deviation torque point index value and the maximum index value through a first preset formula, wherein the first preset formula is as follows:
T NewPoint(N+K) ＝T OldPoint(N+K) +T Error *Fator*(IDXMAX-N-K)/(IDXMAX-N)
in the formula, T NewPoint(N+K) Indicating a first correction value corresponding to the correction point index value, N + K indicating the correction point index value, T OldPoint(N+K) Representing the original value, T, corresponding to the index value of the correction point Error Denotes a torque deviation, fator denotes a correction coefficient, N denotes a deviation torque point index value, and IDXMAX denotes a maximumA large index value;
determining a second correction value corresponding to the correction point index value according to the torque deviation, the original value and the deviation torque point index value through a second preset formula, wherein the second preset formula is as follows:
T NewPoint(N-K) ＝T OldPoint(N-K) +T Error *Fator*K/N
in the formula, T NewPoint(N-K) Indicating a second correction value corresponding to the correction point index value, N-K indicating the correction point index value, T OldPoint(N-K) Representing the original value, T, corresponding to the index value of the correction point Error Denotes a torque deviation, rotor denotes a correction coefficient, and N denotes a deviation torque point index value.
It will be understood that the first correction value refers to a correction value at a point to the right of the reference point to which the offset torque point index value corresponds, and the second correction value refers to a correction value at a point to the left of the reference point to which the offset torque point index value corresponds.
Step S3033: and correcting the low-torque section curve according to the correction value.
It should be understood that after the correction values are obtained, new reference points (0, TP), (1, T) may be obtained NewPoint(1) )……(IDXMAX，T NewPoint(IDXMAX) )、(IDXMAX+1，T OldPoint(IDXMAX+1) )……(N，T OldPoint(N) ) And fitting to obtain a new clutch characteristic curve of the low-torque section.
In a specific implementation, the reference point corresponding to the correction point index value may be corrected according to the correction value, specifically, referring to fig. 6, where fig. 6 is a schematic diagram of a curve of a low torque section after correction according to an embodiment of the method for correcting a clutch characteristic curve of the present invention. As shown in fig. 6, the solid line represents a low torque section curve before correction, the dotted line represents a low torque section curve after correction, that is, a curve corrected according to the first correction value, and the dotted line represents a low torque section curve after correction, that is, a curve corrected according to the second correction value.
In this embodiment, a correction point index value of the low-torque curve is determined according to the deviation torque point index value, a correction value corresponding to the correction point index value is then obtained, and the low-torque curve is corrected according to the correction value. According to the embodiment, the index value of the correction point of the low-torque section curve is determined according to the index value of the deviation torque point, so that more correction points on the low-torque section curve can be obtained, and the low-torque section curve is corrected according to the correction value, so that the characteristic curve of the clutch of the low-torque section can be accurately corrected, the characteristic curve of the clutch of the low-torque section can be more attached to an engine-gearbox power system, and the driving performance and the fuel economy of a vehicle are improved.
Referring to fig. 7, fig. 7 is a block diagram showing a first embodiment of a clutch characteristic curve correction apparatus according to the present invention.
As shown in fig. 7, a clutch characteristic curve correction device according to an embodiment of the present invention includes:
the curve acquisition module 10 is used for acquiring a low-torque section curve in a clutch characteristic curve;
a deviation obtaining module 20, configured to obtain a torque deviation corresponding to the low-torque section curve;
and a curve correcting module 30, configured to correct the low-torque segment curve according to a deviation torque point in the low-torque segment curve when the torque deviation is greater than a preset threshold.
In the embodiment, the low torque section curve in the clutch characteristic curve is obtained, then the torque deviation corresponding to the low torque section curve is obtained, and when the torque deviation is greater than the preset threshold value, the low torque section curve is corrected according to the deviation torque point in the low torque section curve. In this embodiment, the torque deviation corresponding to the low-torque section curve is obtained, and when the torque deviation is greater than the preset threshold, it is described that the clutch characteristic curve of the low-torque section needs to be corrected, and at this time, the low-torque section curve is corrected according to the deviation torque point in the low-torque section curve, so that the clutch characteristic curve of the low-torque section can be accurately corrected, the low-torque section clutch characteristic curve is made to be more suitable for an engine-transmission power system, and the drivability and the fuel economy of a vehicle are improved.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not elaborated in this embodiment can be referred to a method for correcting a clutch characteristic curve provided in any embodiment of the present invention, and are not described herein again.
A second embodiment of the clutch characteristic curve correction device according to the present invention is proposed based on the first embodiment of the clutch characteristic curve correction device according to the present invention.
In the embodiment, the deviation obtaining module 20 is further configured to obtain an engine torque corresponding to the vehicle to be processed; determining a nominal clutch torque according to the low torque segment curve; and determining the torque deviation corresponding to the low torque section curve according to the engine torque and the nominal clutch torque.
Further, the curve modification module 30 is further configured to determine a deviation torque point in the low-torque section curve according to the torque deviation when the torque deviation is greater than a preset threshold; acquiring a deviation torque point index value of the torque deviation point in the low torque section curve; and correcting the low-torque section curve according to the deviation torque point index value.
Further, the curve modification module 30 is further configured to obtain a target torque of the torque deviation point in the curve of the low torque segment; acquiring a reference torque set corresponding to each reference point in the low-torque section curve; and comparing the target torque with each reference torque in the reference torque set, and determining a deviation torque point index value of the torque deviation point in the low torque section curve according to the comparison result.
Further, the curve modification module 30 is further configured to determine a modification point index value of the low-torque segment curve according to the deviation torque point index value; acquiring a correction value corresponding to the index value of the correction point; and correcting the low-torque section curve according to the correction value.
Further, the curve modification module 30 is further configured to obtain an original value corresponding to the modified point index value from the low-torque curve; acquiring a maximum index value corresponding to a maximum torque value in the low-torque section curve; and determining a correction value corresponding to the correction point index value according to the torque deviation, the original value, the deviation torque point index value and the maximum index value.
Further, the correction value corresponding to the correction point index value comprises a first correction value and a second correction value; the curve modification module 30 is further configured to determine a first modification value corresponding to the modification point index value according to the torque deviation, the original value, the deviation torque point index value, and the maximum index value through a first preset formula, where the first preset formula is:
T NewPoint(N+K) ＝T OldPoint(N+K) +T Error *Fator*(IDXMAX-N-K)/(IDXMAX-N)
in the formula, T NewPoint(N+K) Indicating a first correction value corresponding to the correction point index value, N + K indicating the correction point index value, T OldPoint(N+K) Representing the original value, T, corresponding to the index value of the correction point Error Representing a torque deviation, rotor representing a correction coefficient, N representing a deviation torque point index value, and IDXMAX representing a maximum index value;
determining a second correction value corresponding to the correction point index value according to the torque deviation, the original value and the deviation torque point index value through a second preset formula, wherein the second preset formula is as follows:
T NewPoint(N-K) ＝T OldPoint(N-K) +T Error *Fator*K/N
in the formula, T NewPoint(N-K) Indicating a second correction value corresponding to the correction point index value, N-K indicating the correction point index value, T OldPoint(N-K) Representing the original value, T, corresponding to the index value of the correction point Error Denotes a torque deviation, rotor denotes a correction coefficient, and N denotes a deviation torque point index value.
Other embodiments or specific implementation manners of the correction device for a clutch characteristic curve of the present invention may refer to the above method embodiments, and are not described herein again.
Furthermore, an embodiment of the present invention further provides a storage medium, in which a correction program of a clutch characteristic curve is stored, and the steps of the method for correcting a clutch characteristic curve as described above are implemented when the correction program of a clutch characteristic curve is executed by a processor.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or system comprising the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A method of correcting a clutch characteristic, characterized by comprising:
acquiring a low-torque section curve in a clutch characteristic curve;
acquiring torque deviation corresponding to the low-torque section curve;
and when the torque deviation is larger than a preset threshold value, correcting the low-torque section curve according to the deviation torque point in the low-torque section curve.
2. The method for correcting a clutch characteristic curve according to claim 1, wherein the step of obtaining the torque deviation corresponding to the curve of the low torque section includes:
obtaining engine torque corresponding to a vehicle to be processed;
determining a nominal clutch torque according to the low torque segment curve;
and determining the torque deviation corresponding to the low torque section curve according to the engine torque and the nominal clutch torque.
3. The method for correcting a clutch characteristic according to claim 1, wherein the step of correcting the low torque segment curve according to the deviated torque point in the low torque segment curve when the torque deviation is greater than a preset threshold value specifically comprises:
when the torque deviation is larger than a preset threshold value, determining a deviation torque point in the low torque section curve according to the torque deviation:
acquiring a deviation torque point index value of the torque deviation point in the low torque section curve;
and correcting the low-torque section curve according to the deviation torque point index value.
4. The method for correcting a clutch characteristic curve according to claim 3, wherein the step of obtaining a deviation torque point index value of the torque deviation point in the low torque section curve includes:
acquiring a target torque of the torque deviation point in the low torque section curve;
acquiring a reference torque set corresponding to each reference point in the low-torque section curve;
and comparing the target torque with each reference torque in the reference torque set, and determining a deviation torque point index value of the torque deviation point in the low torque section curve according to the comparison result.
5. The method for correcting a clutch characteristic according to claim 3, wherein the step of correcting the low torque segment curve according to the deviation torque point index value specifically includes:
determining a correction point index value of the low-torque section curve according to the deviation torque point index value;
acquiring a correction value corresponding to the correction point index value;
and correcting the low-torque section curve according to the correction value.
6. The method for correcting a clutch characteristic according to claim 5, wherein the step of obtaining a correction value corresponding to the correction point index value includes:
acquiring an original value corresponding to the correction point index value from the low-torque section curve;
acquiring a maximum index value corresponding to a maximum torque value in the low-torque section curve;
and determining a correction value corresponding to the correction point index value according to the torque deviation, the original value, the deviation torque point index value and the maximum index value.
7. The method of correcting a clutch characteristic according to claim 6, wherein the correction value corresponding to the correction point index value includes a first correction value and a second correction value;
the step of determining a correction value corresponding to the correction point index value according to the torque deviation, the original value, the deviation torque point index value, and the maximum index value specifically includes:
determining a first correction value corresponding to the correction point index value according to the torque deviation, the original value, the deviation torque point index value and the maximum index value through a first preset formula, wherein the first preset formula is as follows:
T NewPoint(N+K) ＝T OldPoint(N+K) +T Error *Fator*(IDXMAX-N-K)/(IDXMAX-N)
in the formula, T NewPoint(N+K) Indicating a first correction value corresponding to the correction point index value, N + K indicating the correction point index value, T OldPoint(N+K) Representing the original value, T, corresponding to the index value of the correction point Error Representing a torque deviation, rotor representing a correction coefficient, N representing a deviation torque point index value, and IDXMAX representing a maximum index value;
determining a second correction value corresponding to the correction point index value according to the torque deviation, the original value and the deviation torque point index value through a second preset formula, wherein the second preset formula is as follows:
T NewPoint(N-K) ＝T olaPoint(N-K) +T Error *Fator*K/N
in the formula, T NewPoint(N-K) Indicating a second correction value corresponding to the correction point index value, N-K indicating the correction point index value, T olaPoint(N-K) Representing the original value, T, corresponding to the index value of the correction point Error Denotes a torque deviation, rotor denotes a correction coefficient, and N denotes a deviation torque point index value.
8. A clutch characteristic correction apparatus, characterized by comprising:
the curve acquisition module is used for acquiring a low-torque section curve in the clutch characteristic curve;
the deviation obtaining module is used for obtaining torque deviation corresponding to the low-torque section curve;
and the curve correction module is used for correcting the low-torque section curve according to the deviation torque point in the low-torque section curve when the torque deviation is larger than a preset threshold value.
9. An apparatus for modifying a clutch characteristic, the apparatus comprising: a memory, a processor and a correction program of a clutch characteristic stored on the memory and executable on the processor, the correction program of the clutch characteristic being configured to implement the steps of the correction method of a clutch characteristic as claimed in any one of claims 1 to 7.
10. A storage medium having stored thereon a correction program of a clutch characteristic curve, which when executed by a processor, implements the steps of the correction method of a clutch characteristic curve according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211257397.3A CN115451119B (en) | 2022-10-14 | 2022-10-14 | Method, device, equipment and storage medium for correcting clutch characteristic curve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211257397.3A CN115451119B (en) | 2022-10-14 | 2022-10-14 | Method, device, equipment and storage medium for correcting clutch characteristic curve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115451119A true CN115451119A (en) | 2022-12-09 |
| CN115451119B CN115451119B (en) | 2024-02-13 |
Family
ID=84311730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211257397.3A Active CN115451119B (en) | 2022-10-14 | 2022-10-14 | Method, device, equipment and storage medium for correcting clutch characteristic curve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115451119B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040064232A1 (en) * | 2001-01-24 | 2004-04-01 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg. | Method of controlling an automated clutch of a vehicle |
| US20090000901A1 (en) * | 2007-06-25 | 2009-01-01 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Method for adapting a clutch characteristic curve when clutch hysteresis is present |
| US20120322618A1 (en) * | 2010-03-04 | 2012-12-20 | Schaeffler Technologies AG & Co. KG | Method for controlling a friction clutch and device therefor |
| CN106151311A (en) * | 2014-11-05 | 2016-11-23 | 现代自动车株式会社 | The method of the clutch characteristics of regulation dual-clutch transmission vehicle |
| CN109099149A (en) * | 2017-06-20 | 2018-12-28 | 上海汽车集团股份有限公司 | A kind of double-clutch speed changer torque transfer characteristics adaptive approach and device |
| CN110513407A (en) * | 2019-08-15 | 2019-11-29 | 安徽江淮汽车集团股份有限公司 | Clutch temp control method, device, electronic equipment and storage medium |
| CN110612402A (en) * | 2017-05-11 | 2019-12-24 | 纬湃技术有限公司 | Method for adjusting characteristic curve of clutch |
| CN112303226A (en) * | 2020-11-27 | 2021-02-02 | 重庆青山工业有限责任公司 | Pressure and torque curve correction method for wet-type double clutches |
| CN113586686A (en) * | 2021-08-31 | 2021-11-02 | 重庆长安汽车股份有限公司 | Self-adaptive adjustment method and device for characteristic curve of clutch |
-
2022
- 2022-10-14 CN CN202211257397.3A patent/CN115451119B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040064232A1 (en) * | 2001-01-24 | 2004-04-01 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg. | Method of controlling an automated clutch of a vehicle |
| US20090000901A1 (en) * | 2007-06-25 | 2009-01-01 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Method for adapting a clutch characteristic curve when clutch hysteresis is present |
| US20120322618A1 (en) * | 2010-03-04 | 2012-12-20 | Schaeffler Technologies AG & Co. KG | Method for controlling a friction clutch and device therefor |
| CN106151311A (en) * | 2014-11-05 | 2016-11-23 | 现代自动车株式会社 | The method of the clutch characteristics of regulation dual-clutch transmission vehicle |
| CN110612402A (en) * | 2017-05-11 | 2019-12-24 | 纬湃技术有限公司 | Method for adjusting characteristic curve of clutch |
| CN109099149A (en) * | 2017-06-20 | 2018-12-28 | 上海汽车集团股份有限公司 | A kind of double-clutch speed changer torque transfer characteristics adaptive approach and device |
| CN110513407A (en) * | 2019-08-15 | 2019-11-29 | 安徽江淮汽车集团股份有限公司 | Clutch temp control method, device, electronic equipment and storage medium |
| CN112303226A (en) * | 2020-11-27 | 2021-02-02 | 重庆青山工业有限责任公司 | Pressure and torque curve correction method for wet-type double clutches |
| CN113586686A (en) * | 2021-08-31 | 2021-11-02 | 重庆长安汽车股份有限公司 | Self-adaptive adjustment method and device for characteristic curve of clutch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115451119B (en) | 2024-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112503115B (en) | Double-clutch starting control method, device, equipment and storage medium | |
| US9863334B2 (en) | Drive control apparatus for prime mover | |
| CN110285902B (en) | Rear axle efficiency testing method, user equipment, storage medium and device | |
| CN110513407B (en) | Clutch temperature control method and device, electronic equipment and storage medium | |
| CN112392945B (en) | Gear shifting control method, gear shifting control device, gear shifting control equipment and storage medium | |
| CN110745010A (en) | Creep torque control method for electric vehicle | |
| CN112696489B (en) | Starting control method and system for dual-clutch automatic transmission | |
| CN114174138A (en) | Hybrid vehicle parallel starting control method and system and hybrid vehicle | |
| US11132852B2 (en) | Diagnosis apparatus, diagnosis system, and diagnosis method | |
| US10167952B2 (en) | Clutch torque control method for DCT vehicle | |
| CN113586622A (en) | Self-learning method, device and equipment for clutch transmission torque and readable storage medium | |
| CN115451119A (en) | Method, device, equipment and storage medium for correcting characteristic curve of clutch | |
| CN115451120A (en) | Method, device and equipment for correcting characteristic curve of clutch and storage medium | |
| CN116146342A (en) | Engine active suspension hybrid control method, device, equipment and storage medium | |
| CN113619585B (en) | Vehicle creep control method, device, storage medium and apparatus | |
| CN112793418B (en) | Method and device for limiting vehicle speed based on acceleration principle | |
| CN114919567A (en) | Hybrid vehicle driving mode control method, device, equipment and medium | |
| CN114954003A (en) | Data adjusting method, device, equipment and storage medium for vehicle instrument | |
| JP7310699B2 (en) | Oil state estimation device, vehicle control device, vehicle control system, and data analysis device | |
| CN114670624A (en) | Control method for speed-limited driving, vehicle control unit, system and vehicle | |
| CN112009477B (en) | Automobile control method, device, equipment and storage medium | |
| CN113565952A (en) | Gear shifting force correction control method and system for AMT (automated mechanical transmission) gearbox of new energy automobile | |
| CN114352719A (en) | Creeping vehicle speed control method and device, storage medium, electronic equipment and vehicle | |
| CN113357359B (en) | Automatic gearbox gear shifting control method and device, electronic equipment and medium | |
| US8825284B2 (en) | Automatic fan curve selection |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |