CN105736690B - The self-learning method of dual-clutch transmission shifting-fork gear-shifting power - Google Patents
The self-learning method of dual-clutch transmission shifting-fork gear-shifting power Download PDFInfo
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- CN105736690B CN105736690B CN201610220710.4A CN201610220710A CN105736690B CN 105736690 B CN105736690 B CN 105736690B CN 201610220710 A CN201610220710 A CN 201610220710A CN 105736690 B CN105736690 B CN 105736690B
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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
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
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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
- F16H2061/0075—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by a particular control method
- F16H2061/0087—Adaptive control, e.g. the control parameters adapted by learning
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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
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H2061/2823—Controlling actuator force way characteristic, i.e. controlling force or movement depending on the actuator position, e.g. for adapting force to synchronisation and engagement of gear clutch
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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
- F16H2342/00—Calibrating
- F16H2342/02—Calibrating shift or range movements
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention provides a kind of self-learning method of dual-clutch transmission shifting-fork gear-shifting power, including：When self study condition is met, gearshift is performed according to default gear shifting force, judges whether that gear pre-hung can be completed；If the default gear shifting force can complete the gear pre-hung, the default gear shifting force is then reduced into a first predetermined value and performs gearshift again, if still being able to complete the gear pre-hung, then repeat and gear shifting force is reduced into the operation that the first predetermined value performs gearshift again, until gear pre-hung failure；The upper gear shifting force that gear pre-hung is failed is multiplied by the safety coefficient of setting, as new default gear shifting force, self study is completed.The present invention can reduce because selector fork wear and tear and caused by noise, improve service life.
Description
Technical field
The present invention relates to gearbox control field, and in particular to a kind of dual-clutch transmission shifting-fork gear-shifting power is learnt by oneself
Learning method.
Background technology
Typical wet-type dual-clutch transmission transmission device is by two coaxial nested or parallel arrangement clutches, together
Two input shafts of axle, inside and outside nested arrangement, the output shaft of two parallel arrangements is arranged in multiple synchronizers dress on output shaft
Put, multiple selector forks and 1 differential mechanism are constituted.The odd, even number gear input gear of speed changer is arranged in two input shafts
On, by the switching and different synchronizer actions of two clutches, torque conversion and output are realized via different output shafts.
With specific reference to Fig. 1, typical dual-clutch transmission has first clutch C1 and second clutch C2 two
Individual clutch, interior input shaft 11 is nested with inside and outside outer input shaft 12 and is connected respectively with first clutch C1, second clutch C2.
Each gear driving gear is arranged on interior input shaft 11 and outer input shaft 12, and each gear driven gear is arranged in the first output shaft 13
On the second output shaft 14.Oil pump is that clutch is oil-filled, first clutch C1, second clutch C2 is engaged or is divided respectively
From so that the moment of torsion for coming from engine passes to the devices such as interior input shaft 11 or outer input shaft 12, and utilization synchronizer
The different gear trains of selection are mediated, and realize that parking, a gear to six such as keep off, reversed gear at the function.Clutch rotational speed sensor 1 is used to gather
Clutch rotational speed signal, OSS 2 is used to gather the first output shaft 13, the tach signal of the second output shaft 14,
Interior input shaft rotating speed sensor 3 is used to gather interior input shaft rotating speed signal, and outer input shaft rotating speed sensor 4 is used to gather outer input
Rotating speed signal, 2/6 gear shift fork position sensor 5 is used to detect that 2/6 keeps off shift fork position, and 5/N gear shift forks position sensor 6 is used for
5/N gear shift forks position is detected, 3/1 gear shift fork position sensor 7 is used to detect that 3/1 keeps off shift fork position, R/4 gear shift fork position sensings
Device 8 is used to detect R/4 gear shift forks position, and first clutch pressure sensor 9 is used for the pressure signal for gathering first clutch C1,
Second clutch pressure sensor 10 is used for the pressure signal for gathering second clutch C2.
Selector fork is the mechanical device for promoting synchronizer to engage, and selector fork (can certainly be electricity by hydraulic pressure
Machine) promote, so as to realize gear shifting action.During the use of selector fork, it can grind with the tooth set before synchronizer
Wipe and produce abrasion, whole gearshift stroke can be made to change and (become big), so shift fork can be directed in general control software
Position carry out self study, but promote the shifting-fork gear-shifting power of selector fork action still can not become using corresponding with temperature
The default value of change, the default value is general to be obtained by demarcating, therefore upon wear, default value is constant to cause carrying for gearshift noise
Height, and influence the service life of selector fork, synchronizer.
The content of the invention
The purpose of the present invention is that shifting-fork gear-shifting power is adjusted according to the abrasion condition of selector fork, so as to reduce gearshift
Noise, improves the service life of selector fork and synchronizer.
To achieve the above object, The embodiment provides following technical scheme：
A kind of self-learning method of dual-clutch transmission shifting-fork gear-shifting power, including：When self study condition is met,
Gearshift is performed according to default gear shifting force, judges whether that gear pre-hung can be completed；If the default gear shifting force can complete institute
Gear pre-hung is stated, then the default gear shifting force is reduced into a first predetermined value performs gearshift again, if still being able to complete described
Gear pre-hung, then repeat gear shifting force reducing the operation that the first predetermined value performs gearshift again, until gear pre-hung
Failure；The upper gear shifting force that gear pre-hung is failed is multiplied by the safety coefficient of setting, as new default gear shifting force, completed certainly
Study.
Preferably, if the default gear shifting force can not complete gear pre-hung, by the default gear shifting force
Improve a second predetermined value and perform gearshift again, if it is possible to complete the gear pre-hung, repeat execution and reduce gear shifting force
The first predetermined value performs the operation of gearshift again, until gear pre-hung failure；The upper gearshift that gear pre-hung is failed
Power is multiplied by the safety coefficient of setting, as new default gear shifting force, completes self study.
Preferably, carried out again after gear shift operation if the default gear shifting force is improved into a second predetermined value,
The gear pre-hung can not be still completed, then into limp-home mode.
Preferably, the self study is corresponding with current TOT Transmission Oil Temperature.
Preferably, the self study condition is：Current shift does not change, vehicle speed variation rate is in preset range
And continue scheduled duration, TOT Transmission Oil Temperature rate of change in preset range.
Preferably, in each predetermined stroke section, check whether current stroke section has completed certainly
Study, if not completing self study, allows access into self study, if having completed self study, current stroke section is no longer entered
Row self study.
Preferably, when new stroke section starts, check whether lastrow journey interval has completed self study,
As unfinished, then self study flag bit is all set to 0.
Self-learning method in the present embodiment, has fully taken into account the abrasion of selector fork, in each self study cycle,
Can be by the way that the default gear shifting force in a upper cycle be reduced, and verify that default gear shifting force can subtract by gear pre-hung
It is small which kind of degree arrived,, can be complete after the new default gear shifting force is selector fork abrasion so as to obtain new default gear shifting force
Into the minimum force of gear shift operation, in other words, according to the abrasion condition of selector fork, pass through self study process, default gear shifting force quilt
Constantly update to a smaller value, push dynamic selector fork with larger so as to avoid and cause noise, extend selector fork and
The service life of synchronizer.
Further, the present embodiment taken into full account be likely to occur during self study vehicle running state change or
It can be taken during Gearbox Fault, therefore self study and default gear shifting force is carried out first to increase the measure subtracted afterwards, to ensure to learn by oneself
The realization of habit, and Gearbox Fault can be investigated out in time, selection enters limping pattern.
Further, before self study starts, first judge whether self study condition meets, enable to self study process not
Current driving can be interfered.
Further, distance travelled is divided into predetermined stroke section, self study is carried out in each stroke section,
I.e. using interim self study, both make it that the process of self study will not be excessively complicated with frequently, reduce power consumption, can fit again
The actual wear process of selector fork adjusts default gear shifting force.
Further, will be certainly in the case that the interval self study of lastrow journey does not complete and just enters new stroke section
Study flag bit is all set to 0, and waits for an opportunity to enter the new self study cycle, can avoid the self study in a cycle to this cycle oneself
Study produces the hysteresis quality disturbed and avoid self study.
Brief description of the drawings
Next embodiments of the invention will be described in further details with reference to accompanying drawing, wherein：
Fig. 1 is a kind of structural representation of typical dual-clutch transmission；
Fig. 2 is the stroke section overhaul flow chart of embodiments of the invention；
Fig. 3 is the self study condition overhaul flow chart of embodiments of the invention；
Fig. 4 is the self study flow chart of embodiments of the invention.
Reference：1st, clutch rotational speed sensor, 2, OSS, 3, interior input shaft rotating speed sensor,
4th, outer input shaft rotating speed sensor, 5,2/6 gear shift fork position sensor, 6,5/N gear shift fork position sensor, 7,3/1 gear shift fork
Position sensor, 8, R/4 gear shift fork position sensors, 9, first clutch pressure sensor, 10, second clutch pressure sensing
Device, 11, interior input shaft, 12, outer input shaft, the 13, first output shaft, the 14, second output shaft, C1, first clutch, C2, second
Clutch.
Embodiment
Next described embodiment is that the dual-clutch transmission for combining Fig. 1 is illustrated, but this area
Technical staff should be noted that embodiments of the invention are not limited to the specific double-clutch automatic speed-change of said structure
Case, the number and arrangement of the device such as above-mentioned gear, synchronizer, output shaft can be increased and decreased, changed and without departing from the reality of the present invention
Matter concept.
With reference to Fig. 2, when electric on TCU (gear box control unit), the initialization of software can be carried out, current traveling is detected
Mileage.In the present embodiment, distance travelled is divided into different stroke sections, stroke section refers to the design of a demarcation
Value, such as 500Km, or 1000Km, according to different hardware systems, can set different values, such as using 500Km as a row
If journey is interval, then when detecting current distance travelled for 1300Km, it has been the 3rd stroke area to illustrate current stroke section
Between.Therefore according to the current distance travelled detected, it is capable of deciding whether to reach new stroke section.It is predetermined at each
In stroke section, check whether current stroke section has completed self study, if having completed study, just without certainly
Study；If not completing self study in current stroke section, self study is allowed access into.According to the inspection to self study result
Look into, the performance of self study can be recorded inside NVRAM (nonvolatile random access memory), such as 1 is to complete to learn by oneself
Practise, 0 be do not complete self study, be then directed to current stroke section whether complete self study equally have flag bit go confirmation, 1 is
Complete, 0 is unfinished.Distance travelled is divided into predetermined stroke section means that gearbox is used based on distance travelled
Interim self study, both make it that the process of self study will not be excessively complicated and frequently, reduce power consumption, can fit gearshift again
The actual wear process of shift fork adjusts default gear shifting force.
There is such a case：When new stroke section starts, lastrow journey interval may be because of self study condition not
Meet and do not carried out self study, or self study condition is just met in the lastrow journey interval later stage, but end lastrow
The end self study of journey interval is in progress, is only completed a part.Therefore, on when reaching new stroke section, it is necessary to check
Whether one stroke interval has completed self study, as unfinished, then all sets to 0 self study flag bit, i.e., by above-mentioned self-study
The mark position 0 of the performance of habit, and whether current stroke section complete self study and equally have flag bit also to set to 0.So,
In the case that the interval self study of lastrow journey does not complete and just enters new stroke section, self study flag bit is all set to 0,
Wait for an opportunity to enter the new self study cycle, self study of the self study in a cycle to this cycle can be avoided to produce and disturb and avoid
The hysteresis quality of self study.
Flag bit is 0, it is meant that allows access into follow-up gear shifting force self study process, has performed after self study, self study
Performance mark position be 1, confirm under the operating mode, the self study of the gear has been completed, and self study terminates.
It is right first in the self-learning method of the dual-clutch transmission shifting-fork gear-shifting power of the present embodiment with reference to Fig. 3
Self study condition is detected that it is in the range of specific TOT Transmission Oil Temperature, in specific gear, current vehicle speed stabilization that it, which is acted on,
In the case of, it can be seen that driver does not change the situation of driving intention, now think with output shaft where current shift not
Gear on another same output shaft can complete self study.Detailed process is：
First detect current TOT Transmission Oil Temperature and gear.In gear shifting force form set in advance, temperature and gear are one
Matrix, that is to say, that the gear shifting force under different temperatures is different, so also to be shifted gears for different TOT Transmission Oil Temperatures
Power self study, therefore to judge to be currently at which TOT Transmission Oil Temperature, by under individual gear, so that the current TOT Transmission Oil Temperature of correspondence enters
Row gear shifting force self study.It is, of course, not possible to be recorded for each TOT Transmission Oil Temperature, as long as therefore TOT Transmission Oil Temperature change
Rate is in preset range, you can is thought that current oil temperature is stable, and is checked in the relevant position in form.
Then current vehicle speed and vehicle speed variation rate are detected.If current shift does not change, vehicle speed variation rate is in predetermined model
Enclose interior and continue a scheduled duration (scheduled duration is 10s in the present embodiment), that is, mean that the driving intention of driver is not sent out
It is raw to change.
When the self study condition of above-mentioned gear, TOT Transmission Oil Temperature, vehicle speed variation rate is satisfied by, into as shown in Figure 4
Gear shifting force self study process.Before self study starts, first judge that the effect whether self study condition meets is, so enable to
Self study process will not be interfered to current driving.
With reference to Fig. 4, after foregoing self study condition is satisfied by, it is first according to default gear shifting force and performs gearshift, i.e. according to guarantor
There is the gear shifting force size (normally behaving as current electromagnetic valve size of current) in gear shifting force form to perform gearshift.Such as vehicle
Traveling is kept off five, now the output torque of the first output shaft 13, and speed is stable in 60Km/h, and TOT Transmission Oil Temperature is stable at 60 degree, this
When the self studies of gear shifting forces can be carried out for four gears and six gears on the second output shaft 14, self study result is recorded in gearbox
In the gear shifting force form of 60 degree of oil temperature.
Then by each shift fork position sensor judge whether that gear pre-hung can be completed.
If default gear shifting force can complete gear pre-hung, held again after default gear shifting force is reduced into a first predetermined value
Row gearshift, if still being able to complete gear pre-hung, repeats gear shifting force reduction first predetermined value performing gearshift again
Operation, until gear pre-hung failure, it is impossible to complete gear pre-hung.Now, gear is returned into centre position, gear is reported the loss in advance
A upper gear shifting force for effect is multiplied by the safety coefficient of setting, and original in gear shifting force form lack is covered as new default gear shifting force
Gear shifting force is saved, self study is completed.The meaning of this process is, under current working, can find the gear shifting force of minimum, reduces
Gearshift noise, saves oil consumption, improves the service life of each parts.
If gear pre-hung can not be completed according to original default gear shifting force in gear shifting force form, by the default gearshift
Power improves a second predetermined value and performs gearshift again, if it is possible to complete gear pre-hung, repeats execution by gear shifting force reduction the
One predetermined value performs the operation of gearshift again, until gear pre-hung failure.Then upper gear shifting force gear pre-hung failed
The safety coefficient of setting is multiplied by, as new default gear shifting force, self study is completed.If it is pre- that default gear shifting force is improved into one second
Definite value is carried out after gear shift operation again, can not still complete gear pre-hung, then into limp-home mode.So, just take into full account
The vehicle running state change being likely to occur during self study can be adopted during Gearbox Fault, therefore self study
Take and default gear shifting force is carried out first to increase the measure subtracted afterwards, to ensure the realization of self study, and gearbox event can be investigated out in time
Barrier, selection enters limping pattern.
Above-mentioned each predetermined value, preset range can be set according to gearbox performance.
Embodiments of the invention are realized for the gear shifting force self study under different oil temperatures and gear, realize different oil temperatures
The minimum of lower gear shifting force, reduces the noise produced by abrasion in shift process, makes the abrasion of selector fork, synchronizer
Speed is reduced, and gearshift oil liquid pressure accordingly reduces, and improves parts service life.The reduction of gear shifting force, it is meant that shifted gears
Electric current of being shifted gears in journey reduces, and in Life cycle, saves oil consumption.It is default by the self study in vehicle driving procedure
Gear shifting force is thus continually updated, and is reduced industrial manufacture difficulty, is improved software adaptability.
Although the present invention is described with reference to above example, the present invention is not limited to above-described embodiment,
And only limited by claim, those of ordinary skill in the art easily can modify and change to it, but not from
The essential idea and scope of format invention.
Claims (6)
1. a kind of self-learning method of dual-clutch transmission shifting-fork gear-shifting power, it is characterised in that including：
When self study condition is met, gearshift is performed according to default gear shifting force, judges whether that gear pre-hung can be completed；
If the default gear shifting force can complete the gear pre-hung, the default gear shifting force is reduced into a first predetermined value
Gearshift is performed again, if still being able to complete the gear pre-hung, repeats and gear shifting force is reduced into the first predetermined value
The operation of gearshift is performed again, until gear pre-hung failure；
The upper gear shifting force that gear pre-hung is failed is multiplied by the safety coefficient of setting, as new default gear shifting force, completed certainly
Study；
In each predetermined stroke section, check whether current stroke section has completed self study, if do not completed certainly
Study, then allow access into self study, if having completed self study, current stroke section no longer carries out self study.
2. the self-learning method of dual-clutch transmission shifting-fork gear-shifting power according to claim 1, it is characterised in that
If the default gear shifting force can not complete gear pre-hung, the default gear shifting force is improved into a second predetermined value and held again
Row gearshift, if it is possible to complete the gear pre-hung, repeats execution and gear shifting force is reduced into the first predetermined value performed again
The operation of gearshift, until gear pre-hung failure；
The upper gear shifting force that gear pre-hung is failed is multiplied by the safety coefficient of setting, as new default gear shifting force, completed certainly
Study.
3. the self-learning method of dual-clutch transmission shifting-fork gear-shifting power according to claim 2, it is characterised in that
If the default gear shifting force is improved into a second predetermined value to carry out after gear shift operation again, the gear can not be still completed pre-
Hang, then into limp-home mode.
4. the self-learning method of dual-clutch transmission shifting-fork gear-shifting power according to claim 1, it is characterised in that
The self study is corresponding with current TOT Transmission Oil Temperature.
5. the self study side of the dual-clutch transmission shifting-fork gear-shifting power according to any one of Claims 1-4
Method, it is characterised in that the self study condition is：Current shift does not change, vehicle speed variation rate is in preset range and continued
Scheduled duration, TOT Transmission Oil Temperature rate of change are in preset range.
6. the self-learning method of dual-clutch transmission shifting-fork gear-shifting power according to claim 1, it is characterised in that
When new stroke section starts, check whether lastrow journey interval has completed self study, as unfinished, then by self study mark
Will position is all set to 0.
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| CN201610220710.4A CN105736690B (en) | 2016-04-07 | 2016-04-07 | The self-learning method of dual-clutch transmission shifting-fork gear-shifting power |
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| CN106286813B (en) * | 2016-08-18 | 2018-02-13 | 安徽江淮汽车集团股份有限公司 | Double-clutch automatic gearbox shift fork is put into gear force control method |
| CN107035857B (en) * | 2016-11-28 | 2018-12-14 | 安徽江淮汽车集团股份有限公司 | A kind of selector fork position self-learning method and system |
| CN106678354B (en) * | 2017-01-25 | 2018-09-11 | 安徽江淮汽车集团股份有限公司 | A kind of automatic gear-box shift fork position self-adaptation control method and system |
| CN110132405B (en) * | 2019-05-29 | 2021-12-21 | 中国第一汽车股份有限公司 | Gear off and on noise identification system and method |
| CN113685539B (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 synchronizer of double-clutch transmission |
| CN111982376A (en) * | 2020-08-31 | 2020-11-24 | 重庆青山工业有限责任公司 | Method for testing shifting force of automatic transmission |
| CN112228548B (en) * | 2020-10-09 | 2021-10-22 | 中国第一汽车股份有限公司 | Method, device and equipment for controlling gear shifting force of dual-clutch transmission and storage medium |
| CN113007341B (en) * | 2021-04-28 | 2022-07-19 | 一汽解放汽车有限公司 | Sliding gear sleeve gear shifting control method based on electric gear shifting actuator and vehicle |
| CN114962632B (en) * | 2022-05-27 | 2024-05-03 | 中国第一汽车股份有限公司 | Method and device for determining gear shifting force, electronic equipment and storage medium |
| CN115217961B (en) * | 2022-07-07 | 2023-06-27 | 东风汽车集团股份有限公司 | Gear shifting system control method and related equipment |
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