CN116049985A - Clutch torque characteristic curve generation method, medium, device and vehicle - Google Patents

Abstract

The invention discloses a clutch torque characteristic curve generation method, a medium, a device and a vehicle, wherein the generation method comprises the following steps: obtaining measured torque data, generating a required breakpoint torque characteristic curve according to the measured torque data, and correcting the required breakpoint torque characteristic curve to obtain a linear soft region torque characteristic curve; acquiring software bottom parameters, and calculating a corresponding characteristic curve of a quick change region according to the software bottom parameters and the torque characteristic curve of the linear soft region; generating a clutch torque characteristic curve according to the linear soft zone torque characteristic curve and the rapid change zone characteristic curve; the accuracy of the torque value of the clutch can be effectively improved; meanwhile, the torque of the clutch torque characteristic curve can meet the full torque phase of the clutch, and further the control stability of the clutch is improved.

Description

Clutch torque characteristic curve generation method, medium, device and vehicle

Technical Field

The present disclosure relates to the field of clutch control technologies, and in particular, to a method, medium, device, and vehicle for generating a torque characteristic curve of a clutch.

Background

The clutch is widely used in a hybrid transmission as a gear shift or release device by virtue of its characteristics of quick response, simple control, and the like. Torque transfer for a multiplate clutch is actually frictional torque transfer between clutch plates, and clutch torque characteristics are determining factors affecting clutch control stability.

In the related art, when the clutch torque curve is generated, mostly, only the measured data is subjected to linear interpolation to obtain the clutch torque curve; making clutch control unstable. Meanwhile, the mode cannot meet the requirement of the full torque stage of the clutch, and the high torque stage cannot be accurately valued.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present invention is to provide a method for generating a clutch torque characteristic curve, which can effectively improve the accuracy of the clutch torque value; meanwhile, the torque of the clutch torque characteristic curve can meet the full torque phase of the clutch, and further the control stability of the clutch is improved.

In a first aspect, an embodiment of the present invention provides a method for generating a torque characteristic curve of a clutch, including: obtaining measured torque data, generating a required breakpoint torque characteristic curve according to the measured torque data, and correcting the required breakpoint torque characteristic curve to obtain a linear soft region torque characteristic curve; acquiring software bottom parameters, and calculating a corresponding characteristic curve of a quick change region according to the software bottom parameters and the torque characteristic curve of the linear soft region; and generating a clutch torque characteristic curve according to the linear soft zone torque characteristic curve and the rapid change zone characteristic curve.

According to the clutch torque characteristic curve generation method, firstly, actually measured torque data are obtained, a required breakpoint torque characteristic curve is generated according to the actually measured torque data, and the required breakpoint torque characteristic curve is corrected to obtain a linear soft region torque characteristic curve so as to improve the accuracy of the linear soft region torque characteristic curve; then, acquiring software bottom parameters, and calculating a corresponding rapid change area characteristic curve according to the software bottom parameters and the linear soft area torque characteristic curve so that the clutch torque characteristic curve covers a full torque stage; then, generating a clutch torque characteristic curve according to the linear soft zone torque characteristic curve and the rapid change zone characteristic curve; thereby realizing the effective improvement of the accuracy of the torque value of the clutch; meanwhile, the torque of the clutch torque characteristic curve can meet the full torque phase of the clutch, and further the control stability of the clutch is improved.

In some embodiments, generating a demand breakpoint torque characteristic from the measured torque data includes: preprocessing the actually measured torque data to obtain actually measured rising data and actually measured falling data, wherein the actually measured rising data comprises rising torques corresponding to different pressure values, and the actually measured falling data comprises falling torques corresponding to different pressure values; performing linear interpolation based on the actually measured rising data to obtain torque breakpoint rising data, and performing linear interpolation based on the actually measured falling data to obtain torque breakpoint falling data; and generating a demand breakpoint torque characteristic curve according to the torque breakpoint rising data and the torque breakpoint falling data, wherein the demand breakpoint torque characteristic curve comprises a demand breakpoint torque rising curve and a demand breakpoint torque falling curve.

In some embodiments, modifying the demand breakpoint torque characteristic to obtain a linear soft zone torque characteristic includes: acquiring a first rising pressure and a first falling pressure corresponding to the same torque according to the required breakpoint torque rising curve and the required breakpoint torque falling curve; calculating a first difference value between the first rising pressure and the first falling pressure, and judging whether the first difference value is smaller than a preset hysteresis value or not; and if the first difference value is smaller than the preset hysteresis value, calculating a second difference value between the first rising pressure and the preset hysteresis value, and correcting the first falling pressure according to the second difference value.

In some embodiments, the software underlying parameters include a rising gradient and a falling gradient, wherein calculating a corresponding rapid change region characteristic from the software underlying parameters and the linear soft region torque characteristic comprises: calculating breakpoint difference values based on the rising gradient and the required breakpoint torque rising curve to obtain a characteristic rising curve of a rapid change region; and calculating breakpoint pressure based on the descent gradient and the corrected required breakpoint torque descent curve to generate a characteristic descent curve of the rapid change region.

In some embodiments, generating a clutch torque characteristic from the linear soft zone torque characteristic and the fast-varying zone characteristic comprises: generating a clutch torque characteristic rising curve according to the demand breakpoint torque rising curve and the rapid change region characteristic rising curve; and generating a clutch torque characteristic falling curve according to the corrected demand breakpoint torque falling curve and the rapid change region characteristic falling curve.

In some embodiments, the generating method further comprises: acquiring a second rising pressure and a second falling pressure corresponding to the same torque according to the clutch torque characteristic rising curve and the clutch torque characteristic falling curve; calculating a third difference value between the second rising pressure and the second falling pressure, and judging whether the third difference value is smaller than the preset hysteresis value or not; and if the third difference value is smaller than the preset hysteresis value, calculating a fourth difference value between the second rising pressure and the preset hysteresis value, and correcting the second falling pressure according to the fourth difference value.

In a second aspect, an embodiment of the present invention proposes a computer-readable storage medium having stored thereon a clutch torque characteristic curve generation program which, when executed by a processor, implements the clutch torque characteristic curve generation method as described above.

According to the computer readable storage medium, the clutch torque characteristic curve generation program is stored, so that the processor realizes the clutch torque characteristic curve generation method when executing the clutch torque characteristic curve generation program, and the accuracy of clutch torque value is effectively improved; meanwhile, the torque of the clutch torque characteristic curve can meet the full torque phase of the clutch, and further the control stability of the clutch is improved.

In a third aspect, an embodiment of the present invention provides a clutch torque characteristic curve generating device, including: the acquisition module is used for acquiring actual measurement torque data and generating a required breakpoint torque characteristic curve according to the actual measurement torque data; the correction module is used for correcting the required breakpoint torque characteristic curve to obtain a linear soft zone torque characteristic curve; the calculation module is used for acquiring software bottom parameters and calculating a corresponding characteristic curve of the rapid change area according to the software bottom parameters and the torque characteristic curve of the linear soft area; and the generating module is used for generating a clutch torque characteristic curve according to the linear soft region torque characteristic curve and the rapid change region characteristic curve.

According to the clutch torque characteristic curve generating device provided by the embodiment of the invention, the acquisition module is used for acquiring the actual measured torque data and generating a required breakpoint torque characteristic curve according to the actual measured torque data; the correction module is used for correcting the required breakpoint torque characteristic curve to obtain a linear soft zone torque characteristic curve; the calculation module is used for acquiring software bottom parameters and calculating a corresponding characteristic curve of the rapid change area according to the software bottom parameters and the torque characteristic curve of the linear soft area; the generating module is used for generating a clutch torque characteristic curve according to the linear soft region torque characteristic curve and the rapid change region characteristic curve; thereby realizing the effective improvement of the accuracy of the torque value of the clutch; meanwhile, the torque of the clutch torque characteristic curve can meet the full torque phase of the clutch, and further the control stability of the clutch is improved.

In some embodiments, the obtaining module is further configured to pre-process the measured torque data to obtain measured rising data and measured falling data, where the measured rising data includes rising torques corresponding to different pressure values, and the measured falling data includes falling torques corresponding to different pressure values; performing linear interpolation based on the actually measured rising data to obtain torque breakpoint rising data, and performing linear interpolation based on the actually measured falling data to obtain torque breakpoint falling data; and generating a demand breakpoint torque characteristic curve according to the torque breakpoint rising data and the torque breakpoint falling data, wherein the demand breakpoint torque characteristic curve comprises a demand breakpoint torque rising curve and a demand breakpoint torque falling curve.

In a fourth aspect, an embodiment of the present invention proposes a vehicle loaded with the clutch torque characteristic curve generating device as described above.

According to the vehicle of the embodiment of the invention, the clutch torque characteristic curve generating device is loaded to generate the clutch torque characteristic curve; thereby realizing the effective improvement of the accuracy of the torque value of the clutch; meanwhile, the torque of the clutch torque characteristic curve can meet the full torque phase of the clutch, and further the control stability of the clutch is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a flow chart diagram of a clutch torque profile generation method according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a clutch torque characteristic according to an embodiment of the present invention;

fig. 3 is a block schematic diagram of a clutch torque characteristic curve generating device according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

A clutch torque characteristic curve generation method according to an embodiment of the present invention is described below with reference to the drawings.

Referring to fig. 1, fig. 1 is a flowchart of a clutch torque characteristic curve generating method according to an embodiment of the invention, as shown in fig. 1, the clutch torque characteristic curve generating method includes the following steps:

s101, obtaining measured torque data, generating a required breakpoint torque characteristic curve according to the measured torque data, and correcting the required breakpoint torque characteristic curve to obtain a linear soft zone torque characteristic curve.

In some embodiments, generating the demand breakpoint torque characteristic from the measured torque data includes: preprocessing the measured torque data to obtain measured rising data and measured falling data, wherein the measured rising data comprises rising torques corresponding to different pressure values, and the measured falling data comprises falling torques corresponding to different pressure values; performing linear interpolation based on the actually measured rising data to obtain torque breakpoint rising data, and performing linear interpolation based on the actually measured falling data to obtain torque breakpoint falling data; and generating a demand breakpoint torque characteristic curve according to the torque breakpoint rising data and the torque breakpoint falling data, wherein the demand breakpoint torque characteristic curve comprises a demand breakpoint torque rising curve and a demand breakpoint torque falling curve.

As one example, first, measured torque characteristic data is analyzed to read measured rise data and measured fall data; the actually measured rising data comprise rising torques corresponding to different pressure values, and the actually measured falling data comprise falling torques corresponding to different pressure values; specifically, the drag torque at no pressure is subtracted from the rise torque and the fall torque, and specific measured rise data and measured fall data are shown in table 1:

rising pressure	2.4	2.6	2.8	3	5	7	9
									Rise torque	26.82	35.74	36.09	44.97	132.0	209.4	287.7
Pressure of lowering blood pressure	9	7	5	3	2.8	2.6	2.4	2.2
									Drop torque	288.1	207.6	127.7	52.28	39.94	33.80	31.18	24.66

TABLE 1

Then, linear interpolation is carried out based on the actually measured rising data and the actually measured falling data so as to obtain torque breakpoint rising data and torque breakpoint falling data; specifically, the torque breakpoint rise data and the torque breakpoint fall data are shown in table 2:

demand rise torque	30	50	75	100	125	150	200	550
									Demand rising pressure	2.471	3.116	3.69	4.265	4.839	5.464	6.755	/
Demand drop torque	30	50	75	100	125	150	200	550
									Pressure lowering of demand	2.364	2.963	3.602	4.264	4.926	5.556	6.809	/

TABLE 2

Further, a demand break point torque characteristic curve can be generated from the torque break point rise data and the torque break point fall data.

In some embodiments, modifying the demand breakpoint torque characteristic to obtain the linear soft zone torque characteristic includes: acquiring a first rising pressure and a first falling pressure corresponding to the same torque according to a required breakpoint torque rising curve and a required breakpoint torque falling curve; calculating a first difference value between the first rising pressure and the first falling pressure, and judging whether the first difference value is smaller than a preset hysteresis value or not; if the first difference is smaller than the preset hysteresis value, a second difference between the first rising pressure and the preset hysteresis value is calculated, and the first falling pressure is corrected according to the second difference.

As an example, assuming that the preset hysteresis value is X, the preset hysteresis value may be obtained according to the formula x= hys ×a; wherein hys is a hysteresis parameter, a is a hysteresis coefficient; then, assuming that the first rising pressure is PU [ i ], and the first falling pressure is PD [ i ]; then, it is judged whether PU [ i ] -PD [ i ] < X, and if so, PD [ i ] =pu [ i ] -X is made to complete the correction of the first falling pressure.

S102, acquiring software bottom parameters, and calculating a corresponding characteristic curve of the rapid change region according to the software bottom parameters and the torque characteristic curve of the linear soft region.

In some embodiments, the software underlying parameters include an ascending gradient and a descending gradient, wherein calculating a corresponding rapid change zone characteristic from the software underlying parameters and the linear soft zone torque characteristic comprises: calculating a breakpoint difference value based on the rising gradient and the required breakpoint torque rising curve to obtain a characteristic rising curve of the rapid change region; and calculating breakpoint pressure based on the falling gradient and the corrected required breakpoint torque falling curve to generate a characteristic falling curve of the rapid change region.

As one example, assume that the rising gradient is GU and the falling gradient is GD; furthermore, the characteristic rising curve of the rapid change region can be obtained by conducting breakpoint linear interpolation calculation according to the required breakpoint torque rising curve (the required breakpoint torque rising curve is a linear soft region torque characteristic rising curve to be described); specifically, the calculation of the rapid change region characteristic rise curve can be performed according to the following formula: PU [ j ] =gu x PU [ i-1]; wherein PU [ j ] represents the j-th ascending pressure value in the rapid change region characteristic ascending curve, and PU [ i-1] represents the i-1-th ascending pressure value in the linear soft region torque characteristic ascending curve; then, the characteristic falling curve of the rapid change area can be obtained by calculating breakpoint pressure according to the required breakpoint torque falling curve; specifically, the calculation of the rapid change region characteristic degradation curve can be performed according to the following formula: PD [ j ] =gd+bd [ j-1]; wherein PD [ j ] represents a j-th down-pressure value in the rapid change region characteristic falling curve, PD [ j-1] represents a j-1-th down-pressure value in the rapid change region characteristic falling curve, and BD represents a difference between a torque value corresponding to the j-th down-pressure value and a torque value corresponding to the j-1-th down-pressure value.

S103, generating a clutch torque characteristic curve according to the linear soft zone torque characteristic curve and the fast-changing zone characteristic curve.

In some embodiments, generating the clutch torque characteristic from the linear soft zone torque characteristic and the rapid change zone characteristic includes: generating a clutch torque characteristic rising curve according to the required breakpoint torque rising curve and the characteristic rising curve of the rapid change area; and generating a clutch torque characteristic drop curve according to the corrected demand breakpoint torque drop curve and the characteristic drop curve of the rapid change region.

As an example, as shown in fig. 2, fig. 2 is a schematic diagram of a clutch torque characteristic of an embodiment. Specifically, after the clutch torque characteristic curve is generated, the clutch torque characteristic curve is written to a software bottom layer in a brushing way, so that the accuracy of the clutch torque value can be effectively improved; meanwhile, the torque of the clutch torque characteristic curve can meet the full torque phase of the clutch, and further the control stability of the clutch is improved.

In some embodiments, to further improve accuracy of the final clutch torque characteristic, the clutch torque characteristic generation method further includes: acquiring a second rising pressure and a second falling pressure corresponding to the same torque according to the clutch torque characteristic rising curve and the clutch torque characteristic falling curve; calculating a third difference value between the second rising pressure and the second falling pressure, and judging whether the third difference value is smaller than a preset hysteresis value or not; if the third difference value is smaller than the preset hysteresis value, a fourth difference value between the second rising pressure and the preset hysteresis value is calculated, and the second falling pressure is corrected according to the fourth difference value.

As an example, assume the second rising pressure is PU [ k ] and the second falling pressure is PD [ k ]; then, judging whether PU [ k ] -PD [ k ] < X, if yes, making PD [ k ] =PU [ k ] -X; to complete the correction of the second drop pressure.

In summary, according to the clutch torque characteristic curve generation method of the embodiment of the invention, firstly, the actually measured torque data is obtained, the required breakpoint torque characteristic curve is generated according to the actually measured torque data, and the required breakpoint torque characteristic curve is corrected to obtain the linear soft zone torque characteristic curve, so that the accuracy of the linear soft zone torque characteristic curve is improved; then, acquiring software bottom parameters, and calculating a corresponding rapid change area characteristic curve according to the software bottom parameters and the linear soft area torque characteristic curve so that the clutch torque characteristic curve covers a full torque stage; then, generating a clutch torque characteristic curve according to the linear soft zone torque characteristic curve and the rapid change zone characteristic curve; thereby realizing the effective improvement of the accuracy of the torque value of the clutch; meanwhile, the torque of the clutch torque characteristic curve can meet the full torque phase of the clutch, and further the control stability of the clutch is improved.

In order to achieve the above-described embodiments, an embodiment of the present invention proposes a computer-readable storage medium having stored thereon a clutch torque characteristic curve generation program which, when executed by a processor, implements the clutch torque characteristic curve generation method as described above.

According to the computer readable storage medium, the clutch torque characteristic curve generation program is stored, so that the processor realizes the clutch torque characteristic curve generation method when executing the clutch torque characteristic curve generation program, and the accuracy of clutch torque value is effectively improved; meanwhile, the torque of the clutch torque characteristic curve can meet the full torque phase of the clutch, and further the control stability of the clutch is improved.

In order to achieve the above embodiments, an embodiment of the present invention proposes a clutch torque characteristic curve generating device, as shown in fig. 3, including: the system comprises an acquisition module 10, a correction module 20, a calculation module 30 and a generation module 40.

The acquisition module 10 is used for acquiring actual measurement torque data and generating a demand breakpoint torque characteristic curve according to the actual measurement torque data;

the correction module 20 is configured to correct the required breakpoint torque characteristic curve to obtain a linear soft zone torque characteristic curve;

the calculating module 30 is configured to obtain a software bottom parameter, and calculate a corresponding characteristic curve of the fast-changing region according to the software bottom parameter and the torque characteristic curve of the linear soft region;

the generation module 40 is configured to generate a clutch torque characteristic from the linear soft zone torque characteristic and the rapid change zone characteristic.

In some embodiments, the obtaining module 10 is further configured to pre-process the measured torque data to obtain measured rising data and measured falling data, where the measured rising data includes rising torques corresponding to different pressure values, and the measured falling data includes falling torques corresponding to different pressure values; performing linear interpolation based on the actually measured rising data to obtain torque breakpoint rising data, and performing linear interpolation based on the actually measured falling data to obtain torque breakpoint falling data; and generating a demand breakpoint torque characteristic curve according to the torque breakpoint rising data and the torque breakpoint falling data, wherein the demand breakpoint torque characteristic curve comprises a demand breakpoint torque rising curve and a demand breakpoint torque falling curve.

In some embodiments, the software underlying parameters include an ascending gradient and a descending gradient, wherein calculating a corresponding rapid change zone characteristic from the software underlying parameters and the linear soft zone torque characteristic comprises: calculating a breakpoint difference value based on the rising gradient and the required breakpoint torque rising curve to obtain a characteristic rising curve of the rapid change region; and calculating breakpoint pressure based on the falling gradient and the corrected required breakpoint torque falling curve to generate a characteristic falling curve of the rapid change region.

In some embodiments, generating the clutch torque characteristic from the linear soft zone torque characteristic and the rapid change zone characteristic includes: generating a clutch torque characteristic rising curve according to the required breakpoint torque rising curve and the characteristic rising curve of the rapid change area; and generating a clutch torque characteristic drop curve according to the corrected demand breakpoint torque drop curve and the characteristic drop curve of the rapid change region.

In some embodiments, further comprising: acquiring a second rising pressure and a second falling pressure corresponding to the same torque according to the clutch torque characteristic rising curve and the clutch torque characteristic falling curve; calculating a third difference value between the second rising pressure and the second falling pressure, and judging whether the third difference value is smaller than a preset hysteresis value or not; if the third difference value is smaller than the preset hysteresis value, a fourth difference value between the second rising pressure and the preset hysteresis value is calculated, and the second falling pressure is corrected according to the fourth difference value.

Note that the above description of the clutch torque characteristic curve generating method is equally applicable to the clutch torque characteristic curve generating device, and will not be described in detail here.

In summary, according to the clutch torque characteristic curve generating device provided by the embodiment of the invention, the acquiring module is configured to acquire the actually measured torque data, and generate the required breakpoint torque characteristic curve according to the actually measured torque data; the correction module is used for correcting the required breakpoint torque characteristic curve to obtain a linear soft zone torque characteristic curve; the calculation module is used for acquiring software bottom parameters and calculating a corresponding characteristic curve of the rapid change area according to the software bottom parameters and the torque characteristic curve of the linear soft area; the generating module is used for generating a clutch torque characteristic curve according to the linear soft region torque characteristic curve and the rapid change region characteristic curve; thereby realizing the effective improvement of the accuracy of the torque value of the clutch; meanwhile, the torque of the clutch torque characteristic curve can meet the full torque phase of the clutch, and further the control stability of the clutch is improved.

In order to achieve the above-described embodiments, an embodiment of the present invention proposes a vehicle equipped with the clutch torque characteristic curve generating device as described above.

According to the vehicle of the embodiment of the invention, the clutch torque characteristic curve generating device is loaded to generate the clutch torque characteristic curve; thereby realizing the effective improvement of the accuracy of the torque value of the clutch; meanwhile, the torque of the clutch torque characteristic curve can meet the full torque phase of the clutch, and further the control stability of the clutch is improved.

It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, for example, may be considered as a ordered listing of executable instructions for implementing logical functions, and may be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.

It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (10)

1. A clutch torque characteristic curve generation method, characterized by comprising:

obtaining measured torque data, generating a required breakpoint torque characteristic curve according to the measured torque data, and correcting the required breakpoint torque characteristic curve to obtain a linear soft region torque characteristic curve;

acquiring software bottom parameters, and calculating a corresponding characteristic curve of a quick change region according to the software bottom parameters and the torque characteristic curve of the linear soft region;

and generating a clutch torque characteristic curve according to the linear soft zone torque characteristic curve and the rapid change zone characteristic curve.

2. The clutch torque characteristic generating method according to claim 1, wherein generating a demand break point torque characteristic from the measured torque data includes:

preprocessing the actually measured torque data to obtain actually measured rising data and actually measured falling data, wherein the actually measured rising data comprises rising torques corresponding to different pressure values, and the actually measured falling data comprises falling torques corresponding to different pressure values;

performing linear interpolation based on the actually measured rising data to obtain torque breakpoint rising data, and performing linear interpolation based on the actually measured falling data to obtain torque breakpoint falling data;

and generating a demand breakpoint torque characteristic curve according to the torque breakpoint rising data and the torque breakpoint falling data, wherein the demand breakpoint torque characteristic curve comprises a demand breakpoint torque rising curve and a demand breakpoint torque falling curve.

3. The clutch torque characteristic generating method according to claim 2, wherein correcting the demand break point torque characteristic to obtain a linear soft zone torque characteristic includes:

acquiring a first rising pressure and a first falling pressure corresponding to the same torque according to the required breakpoint torque rising curve and the required breakpoint torque falling curve;

calculating a first difference value between the first rising pressure and the first falling pressure, and judging whether the first difference value is smaller than a preset hysteresis value or not;

and if the first difference value is smaller than the preset hysteresis value, calculating a second difference value between the first rising pressure and the preset hysteresis value, and correcting the first falling pressure according to the second difference value.

4. The clutch torque profile generation method of claim 3, wherein the software floor parameter comprises an ascending gradient and a descending gradient, and wherein calculating a corresponding rapid change zone characteristic from the software floor parameter and the linear soft zone torque characteristic comprises:

calculating breakpoint difference values based on the rising gradient and the required breakpoint torque rising curve to obtain a characteristic rising curve of a rapid change region;

and calculating breakpoint pressure based on the descent gradient and the corrected required breakpoint torque descent curve to generate a characteristic descent curve of the rapid change region.

5. The clutch torque characteristic generating method according to claim 4, wherein generating a clutch torque characteristic from the linear soft zone torque characteristic and the rapid change zone characteristic comprises:

generating a clutch torque characteristic rising curve according to the demand breakpoint torque rising curve and the rapid change region characteristic rising curve;

and generating a clutch torque characteristic falling curve according to the corrected demand breakpoint torque falling curve and the rapid change region characteristic falling curve.

6. The clutch torque characteristic generating method according to claim 5, further comprising:

acquiring a second rising pressure and a second falling pressure corresponding to the same torque according to the clutch torque characteristic rising curve and the clutch torque characteristic falling curve;

calculating a third difference value between the second rising pressure and the second falling pressure, and judging whether the third difference value is smaller than the preset hysteresis value or not;

and if the third difference value is smaller than the preset hysteresis value, calculating a fourth difference value between the second rising pressure and the preset hysteresis value, and correcting the second falling pressure according to the fourth difference value.

7. A computer-readable storage medium, characterized in that a clutch torque characteristic curve generation program is stored thereon, which when executed by a processor, implements the clutch torque characteristic curve generation method according to any one of claims 1 to 6.

8. A clutch torque characteristic curve generating device, characterized by comprising:

the acquisition module is used for acquiring actual measurement torque data and generating a required breakpoint torque characteristic curve according to the actual measurement torque data;

the correction module is used for correcting the required breakpoint torque characteristic curve to obtain a linear soft zone torque characteristic curve;

the calculation module is used for acquiring software bottom parameters and calculating a corresponding characteristic curve of the rapid change area according to the software bottom parameters and the torque characteristic curve of the linear soft area;

and the generating module is used for generating a clutch torque characteristic curve according to the linear soft region torque characteristic curve and the rapid change region characteristic curve.

9. The clutch torque characteristic curve generating device according to claim 8, wherein the obtaining module is further configured to pre-process the measured torque data to obtain measured rising data and measured falling data, wherein the measured rising data includes rising torques corresponding to different pressure values, and the measured falling data includes falling torques corresponding to different pressure values;

performing linear interpolation based on the actually measured rising data to obtain torque breakpoint rising data, and performing linear interpolation based on the actually measured falling data to obtain torque breakpoint falling data;

and generating a demand breakpoint torque characteristic curve according to the torque breakpoint rising data and the torque breakpoint falling data, wherein the demand breakpoint torque characteristic curve comprises a demand breakpoint torque rising curve and a demand breakpoint torque falling curve.

10. A vehicle, characterized in that the vehicle is equipped with the clutch torque characteristic curve generating device according to claim 8 or 9.

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