CN115574020B - Method for matching clutch pressure and torque of automatic transmission - Google Patents
Method for matching clutch pressure and torque of automatic transmissionInfo
- Publication number
- CN115574020B CN115574020B CN202211201150.XA CN202211201150A CN115574020B CN 115574020 B CN115574020 B CN 115574020B CN 202211201150 A CN202211201150 A CN 202211201150A CN 115574020 B CN115574020 B CN 115574020B
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- torque
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- acquisition
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/064—Control of electrically or electromagnetically actuated clutches
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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
- F16H61/02—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 the signals used
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention relates to a matching method of clutch pressure and torque of an automatic transmission, which comprises the steps of 1) judging whether working performance data of a clutch and an engine meet matched acquisition conditions, 2) carrying out data acquisition processing if the working performance data of the clutch and the engine meet the acquisition conditions, wherein the data acquisition processing comprises data acquisition deviation calculation and acquisition sample number updating, 3) judging whether the working performance data of the clutch and processing data obtained by the data acquisition processing meet the matched updating conditions or not according to the working performance data of the clutch, and 4) carrying out matching updating processing if the working performance data of the clutch and the processing data obtained by the data acquisition processing meet the updating conditions, so that the corresponding relation between the pressure and the torque of the clutch is matched. The corresponding relation between the clutch pressure and the clutch torque after the updating processing is matched, so that the automatic, real-time and accurate matching of the corresponding relation between the clutch pressure and the torque is realized, the power transmission of the whole vehicle is accurate and stable, and the drivability and the comfortableness of the whole vehicle are improved as a whole.
Description
Technical Field
The invention relates to the technical field of automatic transmissions of automobiles, in particular to a method for matching clutch pressure and torque of an automatic transmission.
Background
In the power transmission process of an automobile, a clutch in an automatic transmission plays a role in supporting up-and-down transmission power. In operation, the clutch is given a certain engagement pressure to generate a certain torque on the clutch, so that the power transmission among the engine, the automatic transmission and wheels is connected, and the vehicle is driven to run. When the pressure of the clutch is too small, the torque transmitted from the engine to the clutch is insufficient, and the driving of the whole vehicle is affected, so that the corresponding relation between the pressure and the torque of the clutch is required to be met. Once the correspondence between the two is not matched, the power transmission of the whole vehicle is inaccurate, so that a series of problems, such as engine flying speed, engine flameout, driving chain impact and the like, are caused, and the driving performance and the comfort of the whole vehicle are generally deteriorated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a follow-up acceleration control method for opening and closing driving of an electric sliding door or a back door of an automobile, which can realize automatic, real-time and accurate matching of corresponding relations of clutch pressure and torque.
The technical scheme of the invention is that the method for matching the clutch pressure and the torque of the automatic transmission comprises the following steps:
1) Judging whether the working performance data of the clutch and the engine meet the matched acquisition conditions or not;
2) If the acquisition conditions are met, carrying out data acquisition processing, wherein the data acquisition processing comprises acquisition deviation calculation and acquisition sample number update of data;
3) Judging whether the matched updating condition is met or not according to the working performance data of the clutch and the processing data obtained by the data acquisition and processing;
4) And if the updating condition is met, carrying out matching updating processing to enable the corresponding relation between the pressure and the torque of the clutch to be matched.
The step 1) comprises the following steps:
And judging whether the request torque of the clutch is larger than or equal to a first torque threshold value, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition.
The step 1) further comprises the steps of,
If the requested torque of the clutch is greater than or equal to a first torque threshold, performing at least one of the following steps:
judging whether the lubrication flow of the clutch is smaller than a flow threshold value in a preset time period, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition;
Judging whether the oil temperature in the transmission is greater than or equal to a first temperature threshold and less than or equal to a second temperature threshold in the preset time period, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition;
judging whether the effective torque of the engine is larger than or equal to a second torque threshold value in the preset time period, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition;
judging whether the real-time rotating speed of the engine is larger than or equal to a first rotating speed threshold value and smaller than or equal to a second rotating speed threshold value in the preset time period, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition.
After the preset period of time, performing at least one of the following steps:
judging whether the change rate of the effective torque of the engine is larger than or equal to a third torque threshold value and smaller than or equal to a fourth torque threshold value, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition;
judging whether the change rate of the actual torque of the clutch is larger than or equal to a fifth torque threshold value and smaller than or equal to a sixth torque threshold value, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition;
When the change rate of the effective torque of the engine is larger than or equal to a third torque threshold value and smaller than or equal to a fourth torque threshold value, and the change rate of the actual torque of the clutch is larger than or equal to a fifth torque threshold value and smaller than or equal to a sixth torque threshold value, judging whether the clutch is in a gear microslip state, if not, executing the following steps:
and judging whether the change rate of the difference value between the real-time rotating speed of the engine and the rotating speed of the input shaft connected with the clutch is larger than or equal to a third rotating speed threshold value and smaller than or equal to a fourth rotating speed threshold value, and whether the difference value between the real-time rotating speed of the engine and the rotating speed of the input shaft connected with the clutch is larger than or equal to a fifth rotating speed threshold value and smaller than or equal to a sixth rotating speed threshold value, if yes, the acquisition condition is met, otherwise, the acquisition condition is not met.
The acquisition deviation calculation is to calculate an acquisition deviation value according to the effective torque of the engine and the request torque of the clutch;
the updating of the acquired sample number is to sequentially and incrementally calculate the acquired sample number.
The step 3) of said step (c) comprises,
Judging whether the request torque of the clutch is smaller than a first torque threshold value, if not, judging whether the number of the acquired samples is larger than or equal to a sample threshold value or not, if so, judging whether the number of the acquired samples is larger than or equal to a deviation threshold value, and if not, continuously adjacent two acquired deviation values are larger than or equal to the deviation threshold value, and if so, satisfying the matched updating condition, otherwise, not satisfying the matched updating condition.
The step 4) comprises the following steps:
and applying the acquired deviation value obtained through the acquired deviation calculation to clutch pressure to obtain applied clutch pressure, and performing smoothing treatment on each clutch pressure after application to obtain matched clutch pressure, wherein the corresponding relation between the matched clutch pressure and clutch torque is matched.
After the matched clutch pressure is obtained, the clutch pressure is checked and monitored.
The method also comprises the step of performing self-diagnosis on whether the application of the matching method is normal.
The beneficial effects that adopt above-mentioned technical scheme to obtain:
The method comprises the steps of judging whether working performance data of a clutch and engine meet matched acquisition conditions, if so, carrying out data acquisition processing, wherein the data acquisition processing comprises data acquisition deviation calculation and acquisition sample number updating, judging whether the matched update conditions are met according to the working performance data of the clutch and processing data obtained by the data acquisition processing, and if so, carrying out matching update processing to enable the corresponding relation between pressure and torque of the clutch to be matched. The corresponding relation between the clutch pressure and the clutch torque after the updating processing is matched, so that the corresponding relation between the clutch pressure and the torque in the double-clutch automatic transmission can be automatically, accurately matched in real time, the power transmission of the whole automobile is accurate and stable, the problems of engine flying speed, engine flameout, driving chain impact and the like caused by mismatching are solved, and the driving performance and the comfort of the whole automobile are improved as a whole.
The invention is further described below with reference to the drawings and specific examples.
Drawings
FIG. 1 is a schematic flow chart of the present invention;
FIG. 2 is a logic flow diagram of determining whether a matched acquisition condition is met;
Fig. 3 is a logic flow diagram of a match update process.
Detailed Description
Referring to fig. 1 to 3, a clutch pressure and torque matching method of an automatic transmission includes the steps of:
S1, judging whether the matched acquisition conditions are met.
Specifically, whether matched acquisition conditions are met is judged according to the working performance data of the clutch and the engine. The working performance data of the clutch and the engine comprise the requested torque, the actual torque, the lubrication flow request, the input shaft rotating speed, the oil temperature of the transmission, the effective torque of the engine, the real-time rotating speed and the like. The requested torque is a torque request which the clutch is required to meet theoretically, and the lubrication flow request is the lubrication flow request which the clutch is required to meet. The working performance data can be obtained according to the existing means, for example, can be obtained through a sensor test arranged in the transmission, or can be obtained through calculation according to known data, which is not described in detail in this embodiment.
S2, data acquisition processing is carried out.
Specifically, if the acquisition condition is satisfied, data acquisition processing is performed. The data acquisition processing comprises acquisition deviation calculation and acquisition sample number updating of data. The acquisition deviation calculation is to calculate an acquisition deviation value according to the effective torque of the engine and the request torque of the clutch. The update of the number of collected samples is to sequentially increment the number of collected samples, for example, the number of collected samples at the beginning of collection is 0, and each collected sample is incremented by one, for example, the second collected sample is counted as 1.
And S3, judging whether the matched updating condition is met.
Specifically, according to the working performance data of the clutch and the processing data obtained by the data acquisition processing, whether the matched updating condition is met is judged.
S4, matching and updating processing.
Specifically, if the update condition is satisfied, a matching update process is performed to match the correspondence between the pressure and torque of the clutch.
The step S1 specifically includes:
And judging whether the request torque of the clutch is larger than or equal to a first torque threshold value, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition.
If the requested torque of the clutch is greater than or equal to the first torque threshold, at least one of the following steps is performed:
Judging whether the lubrication flow of the clutch is smaller than a flow threshold value in a preset time period, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition.
Judging whether the oil temperature in the transmission is greater than or equal to a first temperature threshold and less than or equal to a second temperature threshold in the preset time period, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition.
Judging whether the effective torque of the engine is larger than or equal to a second torque threshold value in the preset time period, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition.
Judging whether the real-time rotating speed of the engine is larger than or equal to a first rotating speed threshold value and smaller than or equal to a second rotating speed threshold value in the preset time period, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition.
In the above step, in order to be able to accurately calculate the preset time period, a timer may be used to count time after determining that the requested torque of the clutch is greater than or equal to the first torque threshold value.
After the preset period of time, at least one of the following steps may also be performed:
and judging whether the change rate of the effective torque of the engine is larger than or equal to a third torque threshold value and smaller than or equal to a fourth torque threshold value, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition.
And judging whether the change rate of the actual torque of the clutch is larger than or equal to a fifth torque threshold and smaller than or equal to a sixth torque threshold, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition.
When the change rate of the effective torque of the engine is greater than or equal to a third torque threshold and less than or equal to a fourth torque threshold, and the change rate of the actual torque of the clutch is greater than or equal to a fifth torque threshold and less than or equal to a sixth torque threshold, whether the clutch is in a gear microslip state is further judged, if not, the acquisition condition is not met, the following steps are carried out:
and judging whether the change rate of the difference value between the real-time rotating speed of the engine and the rotating speed of the input shaft connected with the clutch is larger than or equal to a third rotating speed threshold value and smaller than or equal to a fourth rotating speed threshold value, and whether the difference value between the real-time rotating speed of the engine and the rotating speed of the input shaft connected with the clutch is larger than or equal to a fifth rotating speed threshold value and smaller than or equal to a sixth rotating speed threshold value, if yes, the acquisition condition is met, otherwise, the acquisition condition is not met.
The step S3 specifically includes:
judging whether the request torque of the clutch is smaller than a first torque threshold value, if not, judging whether the number of the collected samples is larger than or equal to a sample threshold value or not, if so, judging whether the number of the collected samples is larger than or equal to a deviation threshold value, and if not, continuously adjacent two collected deviation value values are larger than or equal to a deviation threshold value, and if so, satisfying the matched updating condition, otherwise, not satisfying the matched updating condition.
The step S4 specifically includes:
and applying the acquired deviation value obtained through the acquired deviation calculation to clutch pressure to obtain applied clutch pressure, and performing smoothing treatment on each clutch pressure after application to obtain matched clutch pressure, wherein the corresponding relation between the matched clutch pressure and clutch torque is matched.
In order to ensure the matching, after the matched clutch pressure is obtained, the clutch pressure can be checked and monitored, and the following steps can be adopted for checking and monitoring:
Judging whether the clutch pressure is in a required range or not, and checking whether the matched clutch pressure is in a reasonable upper limit and lower limit range or not;
Judging whether the clutch pressure meets monotonically-increasing requirements or not, namely checking whether the matched clutch pressure meets monotonically-increasing requirements or not.
After the matching is finished, the clutch pressure curve can be updated, namely the clutch pressure curve is updated by using the matched clutch pressure, the clutch matching acquisition deviation is updated, namely the clutch matching acquisition deviation is cleared, the clutch matching acquisition sample number is updated, and the clutch matching acquisition sample number is cleared. In addition, the successful times of clutch matching can be updated, namely, the successful times of clutch matching can be sequentially increased, the initial value of the sequential increasing operation can be 0, the travel distance of the clutch is updated, the travel distance is the distance of clutch movement in the process from disconnection to connection of power between an engine and a transmission, and the value of the travel distance is calculated and updated in real time by a transmission control unit.
In order to avoid the situation of abnormal matching caused by abnormality or error of the system in the matching process, the self-diagnosis is carried out in real time to judge whether the application of the matching method is normal or not, wherein the self-diagnosis comprises the steps of judging whether the difference value obtained by subtracting the theoretical travel distance after the matching of the clutch from the clutch travel distance calculated in real time is larger than or equal to a distance threshold value, if so, the situation is abnormal, otherwise, the situation is normal. When an abnormality occurs, an alarm can be sent out through a control system of the automobile so as to remind a user of timely finding the abnormality.
The corresponding relation between the pressure and the torque of the clutch can be matched through the matching acquisition condition judgment and the matching acquisition processing and the matching update condition judgment and the matching update processing. The problems of engine flying speed, engine flameout, driving chain impact and the like caused by mismatching are solved, the corresponding relation between clutch pressure and clutch torque is matched, the corresponding relation between clutch pressure and torque in the double-clutch automatic transmission can be automatically, real-time and accurately matched, the power transmission of the whole automobile is accurate and stable, and the drivability and comfortableness of the whole automobile are improved as a whole.
Embodiment two:
for better understanding, the present embodiment exemplarily describes a method for matching clutch pressure and torque of a dual clutch automatic transmission, as shown in fig. 1, which includes the steps of:
matching the first clutch:
S1, judging whether the matched acquisition conditions are met. Specifically, judging whether the matched acquisition conditions are met according to the working performance data of the clutch and the engine, if so, executing the step S2, otherwise, executing the step S9;
S2, data acquisition processing is carried out. Specifically, if the acquisition condition is satisfied, data acquisition processing is performed, the data acquisition processing including acquisition deviation calculation and acquisition sample number update of data. Then executing step S3;
And S3, judging whether the matched updating condition is met. Specifically, according to the working performance data of the clutch and the processing data obtained by the data acquisition processing, whether the matched updating condition is met is judged. If yes, executing step S4, otherwise executing step S9;
s4, matching and updating processing. Specifically, if the update condition is satisfied, a matching update process is performed to match the correspondence between the pressure and torque of the clutch.
S5, whether the application of the matching method is normal or not is subjected to self-diagnosis.
The second clutch is matched by adopting the same steps, and the matching of the first clutch and the matching of the second clutch can be performed simultaneously or sequentially.
As shown in fig. 2, specifically, step S1 includes the following steps:
S1001, judging whether the request torque of the clutch is larger than or equal to a first torque threshold value, if so, executing step S1002, otherwise, executing step S1014.
S1002 the timer starts counting, and then step S1003 is performed.
S1003, judging whether the lubrication flow request of the clutch is smaller than a flow threshold, if so, executing step S1004, otherwise executing step S1014.
S1004, judging whether the oil temperature in the transmission is greater than or equal to a first temperature threshold and less than or equal to a second temperature threshold, if so, executing step S1005, otherwise, executing step S1014.
S1005, judging whether the effective torque of the engine is greater than or equal to a second torque threshold value, if so, executing a step S1006, otherwise executing a step S1014.
S1006, judging whether the real-time rotating speed of the engine is larger than or equal to a first rotating speed threshold value and smaller than or equal to a second rotating speed threshold value, if so, executing a step S1007, otherwise, executing a step S1014.
S1007, judging whether the timer value is greater than or equal to the first time threshold, if yes, executing step S1008, otherwise executing step S1003;
S1008, judging whether the change rate of the effective torque of the engine is larger than or equal to a third torque threshold value and smaller than or equal to a fourth torque threshold value, judging whether the duration time meeting the condition exceeds a second time threshold value, if so, executing step S1009, otherwise, executing step S1014.
S1009, judging whether the change rate of the actual torque of the clutch is greater than or equal to the fifth torque threshold and less than or equal to the sixth torque threshold, and judging whether the duration of satisfying the condition exceeds the third time threshold, if yes, executing step S1010, otherwise executing step S1014.
S1010, judging whether the clutch is in a gear microslip state, if so, executing a step S1011, otherwise, executing a step S1014.
And S1011, judging whether the change rate of the difference value between the real-time rotating speed of the engine and the rotating speed of the input shaft connected with the clutch is larger than or equal to a third rotating speed threshold value and smaller than or equal to a fourth rotating speed threshold value, and simultaneously, judging whether the duration time meeting the condition exceeds a fourth time threshold value, if so, executing the step S1012, otherwise, executing the step S1014.
And S1012, judging whether the difference value between the real-time rotating speed of the engine and the rotating speed of the input shaft connected with the clutch is larger than or equal to a fifth rotating speed threshold value and smaller than or equal to a sixth rotating speed threshold value, and meanwhile, judging whether the duration time meeting the condition exceeds a fifth time threshold value, if so, executing step S1013, otherwise, executing step S1014.
S1013, whether the matched acquisition condition is satisfied is set to yes, and then ends.
S1014, whether the matched acquisition condition is met is set to be NO, and then the process is finished.
Specifically, the step S2 includes the following steps:
Calculating the acquisition deviation, namely calculating an acquisition deviation value through the effective torque of the engine and the request torque of the clutch;
and updating the acquired sample number, and performing sequential incremental calculation on the acquired sample number, wherein the initial value of the acquired sample number is 0.
Specifically, the step S3 includes the following steps:
And step 1, judging whether the request torque of the clutch is smaller than a first torque threshold value, if so, executing step2, otherwise, executing step 7.
And step2, judging whether the number of the acquired samples is larger than or equal to a first sample threshold value, if so, executing step 6, otherwise, executing step 3.
And step 3, judging whether the number of collected samples is larger than or equal to a second sample threshold value, if so, executing step 4, otherwise, executing step 7.
And step 4, judging whether the continuous adjacent two acquisition deviation values are larger than or equal to a deviation threshold value, if so, executing the step 6, otherwise, executing the step 5.
And 5, judging whether the successful times of clutch matching is smaller than or equal to a counting threshold value, if so, executing the step 6, otherwise, executing the step 7.
And 6, setting whether the matched updating condition is met to be yes, and ending.
And 7, setting whether the matched updating condition is met to be no, and ending.
As shown in fig. 3, specifically, step S4 includes the following steps:
And S4001, applying the acquired deviation value obtained through the acquired deviation calculation to clutch pressure to obtain applied clutch pressure, and then executing step S4002.
And S4002, performing smoothing treatment on the applied clutch pressures to obtain matched clutch pressures, wherein the matched clutch pressures have the characteristic of linearity, the corresponding relations between the matched clutch pressures and clutch torques are matched, and then executing step S4003 to start checking and monitoring on the clutch pressures.
S4003, judging whether the clutch pressure is in the range, checking whether the matched clutch pressure is in the range of reasonable upper limit and lower limit, if so, executing step S4004, otherwise, ending.
S4004, judging whether clutch pressure accords with monotonicity test, checking whether the matched clutch pressure meets monotonically increasing requirement, if so, executing step S4005, otherwise, ending.
S4005, updating a pressure curve of the clutch pressure, updating the pressure curve of the clutch using the matched clutch pressure, and then executing step S4006.
S4006, updating the acquisition deviation value matched with the clutch, carrying out zero clearing processing on the acquisition deviation value matched with the clutch, and then executing step S4007.
S4007, updating the number of the collected samples matched with the clutch, carrying out zero clearing processing on the number of the collected samples matched with the clutch, and then executing step S4008.
S4008, updating the successful times of clutch matching, performing sequential increasing operation on the successful times of clutch matching, wherein the initial value of the successful times of clutch matching is 0, and then executing step S4009;
And S4009, updating the travel distance of the clutch, wherein the travel distance is the distance of the clutch movement in the process from disconnection to connection of power between the engine and the transmission, and the travel distance value is calculated and updated in real time by the transmission control unit and then is ended.
In order to avoid the situation of abnormal matching caused by abnormality or error of the system in the matching process, the self-diagnosis is carried out in real time to judge whether the application of the matching method is normal or not, wherein the self-diagnosis comprises the steps of judging whether the difference value obtained by subtracting the theoretical travel distance after the matching of the clutch from the clutch travel distance calculated in real time is larger than or equal to a distance threshold value, if so, the situation is abnormal, otherwise, the situation is normal. When an abnormality occurs, an alarm can be sent out through a control system of the automobile so as to remind a user of timely finding the abnormality.
The corresponding relation between the pressure and the torque of the clutch can be matched through the matching step. The problems of engine flying speed, engine flameout, driving chain impact and the like caused by mismatching are solved, the corresponding relation between clutch pressure and clutch torque is matched, the corresponding relation between clutch pressure and torque in the double-clutch automatic transmission can be automatically, real-time and accurately matched, the power transmission of the whole automobile is accurate and stable, and the drivability and comfortableness of the whole automobile are improved as a whole.
Claims (8)
1. The method for matching clutch pressure and torque of an automatic transmission is characterized by comprising the following steps:
1) Judging whether the working performance data of the clutch and the engine meet the matched acquisition conditions or not;
2) If the acquisition conditions are met, carrying out data acquisition processing, wherein the data acquisition processing comprises acquisition deviation calculation and acquisition sample number update of data;
3) Judging whether the matched updating condition is met or not according to the working performance data of the clutch and the processing data obtained by the data acquisition and processing;
judging whether the request torque of the clutch is smaller than a first torque threshold value, if not, not meeting the matched updating condition, if so, judging whether the number of the acquired samples is larger than or equal to a sample threshold value; the acquisition deviation of two adjacent continuous acquisition deviations is larger than or equal to a deviation threshold value, if yes, the matched updating condition is met, otherwise, the matching updating condition is not met;
4) If the updating condition is met, carrying out matching updating processing to enable the corresponding relation between the pressure and the torque of the clutch to be matched;
and applying the acquired deviation value obtained through the acquired deviation calculation to clutch pressure to obtain applied clutch pressure, and performing smoothing treatment on each clutch pressure after application to obtain matched clutch pressure, wherein the corresponding relation between the matched clutch pressure and clutch torque is matched.
2. The method for matching clutch pressure and torque of an automatic transmission according to claim 1, wherein said step 1) comprises:
And judging whether the request torque of the clutch is larger than or equal to a first torque threshold value, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition.
3. The method for matching clutch pressure and torque of an automatic transmission according to claim 2, wherein said step 1) further comprises,
If the requested torque of the clutch is greater than or equal to a first torque threshold, performing at least one of the following steps:
judging whether the lubrication flow of the clutch is smaller than a flow threshold value in a preset time period, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition;
Judging whether the oil temperature in the transmission is greater than or equal to a first temperature threshold and less than or equal to a second temperature threshold in the preset time period, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition;
judging whether the effective torque of the engine is larger than or equal to a second torque threshold value in the preset time period, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition;
judging whether the real-time rotating speed of the engine is larger than or equal to a first rotating speed threshold value and smaller than or equal to a second rotating speed threshold value in the preset time period, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition.
4. The method for matching clutch pressure and torque of an automatic transmission according to claim 3, wherein after said preset period of time, at least one of the steps of:
judging whether the change rate of the effective torque of the engine is larger than or equal to a third torque threshold value and smaller than or equal to a fourth torque threshold value, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition;
and judging whether the change rate of the actual torque of the clutch is larger than or equal to a fifth torque threshold and smaller than or equal to a sixth torque threshold, if so, meeting the acquisition condition, otherwise, not meeting the acquisition condition.
5. The method for matching clutch pressure and torque of an automatic transmission according to claim 4, wherein when a rate of change of an effective torque of the engine is greater than or equal to a third torque threshold value and less than or equal to a fourth torque threshold value, and a rate of change of an actual torque of the clutch is greater than or equal to a fifth torque threshold value and less than or equal to a sixth torque threshold value, determining whether the clutch is in a gear microslip state, and if not, performing the following steps if the acquisition condition is not satisfied:
and judging whether the change rate of the difference value between the real-time rotating speed of the engine and the rotating speed of the input shaft connected with the clutch is larger than or equal to a third rotating speed threshold value and smaller than or equal to a fourth rotating speed threshold value, and whether the difference value between the real-time rotating speed of the engine and the rotating speed of the input shaft connected with the clutch is larger than or equal to a fifth rotating speed threshold value and smaller than or equal to a sixth rotating speed threshold value, if yes, the acquisition condition is met, otherwise, the acquisition condition is not met.
6. The method for matching clutch pressure and torque of an automatic transmission according to claim 1, wherein said acquisition deviation calculation calculates an acquisition deviation value based on an effective torque of said engine and a requested torque of said clutch;
the updating of the acquired sample number is to sequentially and incrementally calculate the acquired sample number.
7. The method for matching clutch pressure and torque of an automatic transmission according to claim 1, wherein said clutch pressure is checked and monitored after said matched clutch pressure is obtained.
8. The method for matching clutch pressure and torque of an automatic transmission according to claim 1, further comprising the step of performing self-diagnosis as to whether or not application of said matching method is normal.
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| CN106641024A (en) * | 2017-01-25 | 2017-05-10 | 安徽江淮汽车集团股份有限公司 | Clutch torque and pressure self-adaptive method and system |
| CN109595336A (en) * | 2018-12-19 | 2019-04-09 | 安徽江淮汽车集团股份有限公司 | A kind of wet-type double-clutch automatic speed-change device clutch moment of torque pressure method of adjustment |
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| US8216111B2 (en) * | 2010-01-15 | 2012-07-10 | GM Global Technology Operations LLC | Clutch control for a transmission |
| US10107390B2 (en) * | 2016-09-07 | 2018-10-23 | Ford Global Technologies, Llc | Torque converter clutch engagement pressure |
| CN111350773B (en) * | 2018-12-24 | 2021-09-21 | 长城汽车股份有限公司 | Pressure compensation control method and system of clutch and vehicle |
| CN111692238B (en) * | 2019-03-11 | 2021-09-07 | 上海汽车变速器有限公司 | Self-adaptive optimization control method for torque transmission characteristics of clutch |
| CN113685457B (en) * | 2020-05-19 | 2022-09-16 | 广州汽车集团股份有限公司 | Self-adaptive method and system for semi-joint pressure of double-clutch transmission clutch |
| CN112161050B (en) * | 2020-10-31 | 2021-12-31 | 重庆青山工业有限责任公司 | Clutch pressure compensation control method of wet DCT |
| CN117489721A (en) * | 2021-10-29 | 2024-02-02 | 江苏大学 | Wet clutch information collection method based on fuzzy neural network |
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| CN106641024A (en) * | 2017-01-25 | 2017-05-10 | 安徽江淮汽车集团股份有限公司 | Clutch torque and pressure self-adaptive method and system |
| CN109595336A (en) * | 2018-12-19 | 2019-04-09 | 安徽江淮汽车集团股份有限公司 | A kind of wet-type double-clutch automatic speed-change device clutch moment of torque pressure method of adjustment |
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