CN115451120A - Method, device and equipment for correcting characteristic curve of clutch and storage medium - Google Patents
Method, device and equipment for correcting characteristic curve of clutch and storage medium Download PDFInfo
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
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- 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
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- 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
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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 high-torque section curve in the clutch characteristic curve is obtained, then the torque deviation percentage corresponding to the high-torque section curve is obtained, and when the torque deviation percentage is larger than the preset threshold value, the high-torque section curve is corrected according to the deviation torque point in the high-torque section curve. According to the method, the torque deviation percentage corresponding to the high-torque section curve is obtained, when the torque deviation percentage is larger than the preset threshold value, the characteristic curve of the clutch of the high-torque section needs to be corrected, at the moment, the characteristic curve of the clutch of the high-torque section is corrected according to the deviation torque point in the high-torque section curve, so that the characteristic curve of the clutch of the high-torque section can be accurately corrected, the characteristic curve of the clutch of the high-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 invention relates to the technical field of clutches, in particular to a method, a device, equipment and a storage medium for correcting a characteristic curve of a clutch.
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 high torque section becomes an urgent problem to be solved.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is 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 high-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 high-torque section curve in a clutch characteristic curve;
acquiring the torque deviation percentage corresponding to the high-torque section curve;
and when the torque deviation percentage is larger than a preset threshold value, correcting the high-torque section curve according to the deviation torque point in the high-torque section curve.
Optionally, the step of obtaining the percentage of the torque deviation corresponding to the high-torque section curve specifically includes:
obtaining engine torque corresponding to a vehicle to be processed;
determining a nominal clutch torque according to the high torque segment curve;
determining a torque bias based on the engine torque and the nominal clutch torque;
and determining the percentage of the torque deviation corresponding to the high torque section curve according to the torque deviation and the nominal clutch torque.
Optionally, when the torque deviation percentage is greater than a preset threshold, the step of correcting the high-torque section curve according to the deviation torque point in the high-torque section curve specifically includes:
when the torque deviation percentage is larger than a preset threshold value, determining a deviation torque point in the high-torque section curve according to the torque deviation;
acquiring a deviation torque point index value of the torque deviation point in the high-torque section curve;
and correcting the high-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 high-torque section curve specifically includes:
acquiring a target torque of the torque deviation point in the curve of the high torque section;
acquiring a reference torque set corresponding to each reference point in the high-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 high-torque section curve according to the comparison result.
Optionally, the step of correcting the high-torque section curve according to the deviation torque point index value specifically includes:
determining a correction point index value of the high-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 high-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 high-torque section curve;
determining a torque compensation value according to the torque deviation;
and determining a correction value corresponding to the correction point index value according to the torque deviation and the deviation torque point index value of the original value and the torque compensation value.
Optionally, 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 torque compensation value specifically includes:
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 torque compensation value by using a preset formula, wherein the preset formula is as follows:
T NewPoint(N+K) ＝T OldPoint(N+K) +T Error *Fator+K*T offset
in the formula, T NewPoint(N+K) Indicating a 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 torque deviation, fator denotes correction factor, T offset Indicating a torque compensation 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 high-torque section curve in a clutch characteristic curve;
the deviation obtaining module is used for obtaining the torque deviation percentage corresponding to the high-torque section curve;
and the curve correction module is used for correcting the high-torque section curve according to the deviation torque point in the high-torque section curve when the torque deviation percentage is greater 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 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 the clutch characteristic 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 high-torque section curve in the clutch characteristic curve is obtained, then the torque deviation percentage corresponding to the high-torque section curve is obtained, and when the torque deviation percentage is larger than the preset threshold value, the high-torque section curve is corrected according to the deviation torque point in the high-torque section curve. According to the method, the torque deviation percentage corresponding to the high-torque section curve is obtained, when the torque deviation percentage is larger than the preset threshold value, the characteristic curve of the clutch of the high-torque section needs to be corrected, at the moment, the characteristic curve of the clutch of the high-torque section is corrected according to the deviation torque point in the high-torque section curve, so that the characteristic curve of the clutch of the high-torque section can be accurately corrected, the characteristic curve of the clutch of the high-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 structural diagram of a device for correcting a clutch characteristic curve of 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 high 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 are not intended to 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 apparatus for correcting 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 (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.
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 high-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 high torque segment curve refers to a curve corresponding to a high torque segment in the clutch characteristic curve, and the specific torque value corresponding to the high torque segment is not particularly limited in this embodiment.
In a specific implementation, after obtaining a high-torque section curve in a clutch characteristic curve, it is further necessary to identify a high-torque section clutch characteristic curve adaptive operating condition, which may include: 1. the non-gear-shifting working condition is activated, and the clutch is in a friction control state; 2. the rotating speed of the engine is greater than a certain value and can be set to 1000rpm; 3. the change rate of the engine speed is stable; 4. the engine torque is larger than a certain value and can be set to be 60Nm; 5. the engine torque change rate is stable; 6. clutch position or rate of pressure change is stable; 7. the vehicle speed is greater than a certain value and can be set to be 20Km/h; 8. the actual gear is greater than 1 gear; 9. the gearbox and the engine have no fault; 10. the water temperature of the engine is normal; 11. the target gear is in place; 12. the clutch is not in an over-temperature state; 13. the self-adaptive time is longer 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 percentage corresponding to the high-torque section curve.
Step S20: acquiring the torque deviation percentage corresponding to the high-torque section curve;
further, in order to accurately determine the torque deviation percentage, in this embodiment, the step S20 includes: obtaining engine torque corresponding to a vehicle to be processed; determining a nominal clutch torque according to the high torque segment curve; determining a torque bias as a function of the engine torque and the nominal clutch torque; and determining the percentage of the torque deviation corresponding to the high torque section curve according to the torque deviation 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 rotational inertia of the engine;
is the rate of change of engine speed; k Eng Is the engine compartment air damping coefficient; n is Eng Is the engine speed.
It should be understood that the nominal clutch torque is not the torque actually transmitted by the clutch, but the torque calculated from the clutch characteristic curve of the high torque section, and the specific formula is:
T Cluth ＝f(p)+T TempOffset
wherein, T Clut□ Nominal clutch torque; f (p) is the torque obtained by reversely checking the clutch characteristic curve of the high torque section according to the clutch pressure or position, namely the torque can be obtained by checking the clutch characteristic curve of the high torque section according to the known clutch pressure or position; TT empOffset 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 reversely searched high-torque section, namely knowing the current clutch temperature and the temperature corresponding to the clutch characteristic curve of the high-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 high torque segment can be determined according to an engine torque and the nominal clutch torque, and a specific calculation formula is as follows:
T Error ＝T EngTrans -T Cluth
wherein, T Error For torque deviation, T EngTrans As engine torque, T Cluth Is the nominal clutch torque. In addition, the percentage of torque deviation may be calculated according to the following formula:
ErrorPercent＝T Error /T Cluth
where ErrorPercent is the percent torque bias, T Error For torque deviation, T Cluth Is the nominal clutch torque.
Step S30: and when the torque deviation percentage is larger than a preset threshold value, correcting the high-torque section curve according to the deviation torque point in the high-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 high torque segment curve refers to the point in the high torque segment curve where there is a torque deviation, i.e., the point where correction is needed.
In a specific implementation, when the percentage of the torque deviation is greater than a preset threshold, it is considered that the clutch characteristic curve has a deviation in a high torque section, and self-adaptation is required, that is, the curve in the high torque section needs to be corrected.
In the embodiment, the high-torque section curve in the clutch characteristic curve is obtained, then the torque deviation percentage corresponding to the high-torque section curve is obtained, and when the torque deviation percentage is greater than the preset threshold value, the high-torque section curve is corrected according to the deviation torque point in the high-torque section curve. In the embodiment, the torque deviation percentage corresponding to the high-torque section curve is obtained, when the torque deviation percentage is greater than the preset threshold value, it is described that the clutch characteristic curve of the high-torque section needs to be corrected, at the moment, the high-torque section curve is corrected according to the deviation torque point in the high-torque section curve, so that the clutch characteristic curve of the high-torque section can be accurately corrected, the high-torque section clutch characteristic curve is more attached to an engine-transmission power system, and the driving performance 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 percentage is larger than a preset threshold value, determining a deviation torque point in the high-torque section curve according to the torque deviation;
it should be understood that the embodiment can calculate the deviation torque point in the curve of the high torque segment by the following formula:
T ErrorPoint ＝∫ 0 T Cluth *dt/t
wherein, T ErrorPoint Is a biased torque point, T, in the curve of the high torque section Error The torque deviation corresponding to the curve of the high torque section.
Step S302: acquiring a deviation torque point index value of the torque deviation point in the high-torque section curve;
it should be noted that the deviation torque point index value refers to an index value of the deviation torque point in the high torque segment curve, and since the high 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 fifth reference point, which is equivalent to the deviation torque point index value.
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 curve of the high torque section; acquiring a reference torque set corresponding to each reference point in the high-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 high-torque section curve according to the comparison result.
The target torque is a torque at the torque deviation point on the high-torque-level curve, and the reference torque set is a set of torques corresponding to the respective reference points on the high-torque-level curve.
It can be understood that, since the curve of the high 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 high-torque section curve according to the deviation torque point index value.
In a specific implementation, points needing to be corrected on the high-torque section curve can be found according to the deviation torque point index value, and then the high-torque section curve is corrected.
In the embodiment, when the torque deviation percentage is larger than a preset threshold value, a deviation torque point in the high-torque section curve is determined according to the torque deviation, then a deviation torque point index value of the torque deviation point in the high-torque section curve is obtained, and then the high-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 high-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 high-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 high-torque section curve according to the deviation torque point index value;
it can be understood that, in order to correct the clutch characteristic curve of the high torque section more accurately, in addition to the point corresponding to the deviation torque point index value, a plurality of points before and after the point may be corrected simultaneously, and when the deviation torque point index value is N, the corrected point index values may be N + K and N-K, where K is any natural number, such as 0,1, 2 … …
Step S3032: acquiring a correction value corresponding to the correction point index value;
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: acquiring an original value corresponding to the correction point index value from the high-torque section curve; determining a torque compensation value according to the torque deviation; and determining a correction value corresponding to the correction point index value according to the torque deviation, the deviation torque point index value of the original value and the torque compensation value.
It should be understood that the raw value refers to the torque value of the reference point in the high torque segment curve corresponding to the corrected point index value. This embodiment may have the TP point as the 0 th torque reference point, the TP point being the clutch half-engagement point.
Further, in order to accurately determine a correction value, in this embodiment, 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 torque compensation value specifically includes: 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 torque compensation value by using a preset formula, wherein the preset formula is as follows:
T NewPoint(N+K) ＝T OldPoint(N+K) +T Error *Fator+K*T offset
in the formula, T NewPoint(N+K) Indicating a 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 the torque deviation, fator the correction factor, T offset Indicating a torque compensation value.
It will be appreciated that the (N + K) maximum value is IDXMAX, which is the index value corresponding to the maximum torque value in the curve for the high torque segment.
Step S3033: and correcting the high-torque section curve according to the correction value.
It is understood that after the correction values are obtained, new reference points (0, TP), (1,T) may be obtained OldPoint(1) )……、(N-1，T OldPoint(N-1) )、(N，T NewPoint(N) )、(N+1，T NewPoint(N+1) )……(IDXMAX，T NewPoint(IDXMAX) ) And fitting to obtain a new clutch characteristic curve of the high-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 gao torque segment curve after correction according to an embodiment of a method for correcting a clutch characteristic curve of the present invention. As shown in fig. 6, the solid line represents the high torque segment curve before the correction, and the broken line represents the high torque segment curve after the correction.
In this embodiment, a correction point index value of the high-torque section curve is determined according to the deviation torque point index value, then a correction value corresponding to the correction point index value is obtained, and then the high-torque section curve is corrected according to the correction value. According to the embodiment, the index value of the correction point of the high-torque section curve is determined according to the index value of the deviation torque point, so that more correction points on the high-torque section curve can be obtained, and the high-torque section curve is corrected according to the correction value, so that the clutch characteristic curve of the high-torque section can be accurately corrected, the clutch characteristic curve of the high-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 high-torque section curve in a clutch characteristic curve;
a deviation obtaining module 20, configured to obtain a torque deviation percentage corresponding to the high-torque section curve;
and a curve correcting module 30, configured to correct the high-torque section curve according to the deviation torque point in the high-torque section curve when the torque deviation percentage is greater than a preset threshold.
In the embodiment, a high-torque section curve in a clutch characteristic curve is obtained, then a torque deviation percentage corresponding to the high-torque section curve is obtained, and when the torque deviation percentage is greater than a preset threshold value, the high-torque section curve is corrected according to a deviation torque point in the high-torque section curve. In the embodiment, the torque deviation percentage corresponding to the high-torque section curve is obtained, when the torque deviation percentage is greater than the preset threshold value, it is described that the clutch characteristic curve of the high-torque section needs to be corrected, at the moment, the high-torque section curve is corrected according to the deviation torque point in the high-torque section curve, so that the clutch characteristic curve of the high-torque section can be accurately corrected, the high-torque section clutch characteristic curve is more attached to an engine-transmission power system, and the driving performance and the fuel economy of a vehicle are improved.
It should be noted that the above-mentioned work flows are only illustrative and do not limit the scope of the present invention, and in practical applications, those skilled in the art may select some or all of them according to actual needs to implement the purpose of the solution of the present embodiment, and the present invention is not limited herein.
In addition, the technical details that are not elaborated in this embodiment may refer to the method for correcting the clutch characteristic curve provided by 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 high torque segment curve; determining a torque bias as a function of the engine torque and the nominal clutch torque; and determining the percentage of the torque deviation corresponding to the high torque section curve according to the torque deviation and the nominal clutch torque.
Further, the curve modification module 30 is further configured to determine a deviation torque point in the curve of the high torque segment according to the torque deviation when the percentage of the torque deviation is greater than a preset threshold; acquiring a deviation torque point index value of the torque deviation point in the high-torque section curve; and correcting the high-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 high-torque segment; acquiring a reference torque set corresponding to each reference point in the high-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 high-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 high-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 high-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 high-torque curve; determining a torque compensation value according to the torque deviation; and determining a correction value corresponding to the correction point index value according to the torque deviation, the deviation torque point index value of the original value and the torque compensation value.
Further, the curve modification module 30 is further configured to determine a 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 torque compensation value by using a preset formula, where the preset formula is:
T NewPoint(N+K) ＝T OldPoint(N+K) +T Error *Fator+K*T offset
in the formula, T NewPoint(N+K) Indicating a 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 torque deviation, fator denotes correction factor, T offset Indicating a torque compensation 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 described by the phrase "comprising" does not exclude the presence of other identical elements in a process, method, article, or system that comprises 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 description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. 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 high-torque section curve in a clutch characteristic curve;
acquiring the torque deviation percentage corresponding to the high-torque section curve;
and when the torque deviation percentage is larger than a preset threshold value, correcting the high-torque section curve according to the deviation torque point in the high-torque section curve.
2. The method for correcting a clutch characteristic curve according to claim 1, wherein the step of obtaining the percentage of the torque deviation corresponding to the curve of the high torque segment specifically includes:
obtaining engine torque corresponding to a vehicle to be processed;
determining a nominal clutch torque according to the high torque segment curve;
determining a torque bias as a function of the engine torque and the nominal clutch torque;
and determining the percentage of the torque deviation corresponding to the high torque section curve according to the torque deviation and the nominal clutch torque.
3. The method for correcting a clutch characteristic according to claim 2, wherein the step of correcting the high torque segment curve according to the deviated torque point in the high torque segment curve when the torque deviation percentage is greater than a preset threshold value includes:
when the torque deviation percentage is larger than a preset threshold value, determining a deviation torque point in the high-torque section curve according to the torque deviation;
acquiring a deviation torque point index value of the torque deviation point in the high-torque section curve;
and correcting the high-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 high torque section curve specifically includes:
acquiring a target torque of the torque deviation point in the curve of the high torque section;
acquiring a reference torque set corresponding to each reference point in the high-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 high-torque section curve according to the comparison result.
5. The method for correcting a clutch characteristic curve according to claim 3, wherein the step of correcting the high torque segment curve according to the deviation torque point index value specifically includes:
determining a correction point index value of the high-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 high-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 high-torque section curve;
determining a torque compensation value according to the torque deviation;
and determining a correction value corresponding to the correction point index value according to the torque deviation and the deviation torque point index value of the original value and the torque compensation value.
7. The method for correcting a clutch characteristic according to claim 6, wherein the step of determining a correction value corresponding to the correction point index value based on the torque deviation, the original value, the deviation torque point index value and the torque compensation value includes:
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 torque compensation value by using a preset formula, wherein the preset formula is as follows:
T NewPoint(N+K) ＝T oldPoint(N+K) +T Error *Fator+K*T offset
in the formula, T NewPoint(N+K) Indicating a 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 the torque deviation, fator the correction factor, T offset Indicating a torque compensation value.
8. A clutch characteristic correction apparatus, characterized by comprising:
the curve acquisition module is used for acquiring a high-torque section curve in a clutch characteristic curve;
the deviation obtaining module is used for obtaining the torque deviation percentage corresponding to the high-torque section curve;
and the curve correction module is used for correcting the high-torque section curve according to the deviation torque point in the high-torque section curve when the torque deviation percentage is greater than a preset threshold value.
9. An apparatus for modifying a clutch characteristic, the apparatus 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 according to 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.
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