CN106763726A - A kind of automatic transmission sets up the adaptive approach of clutch binding site oil pressure - Google Patents
A kind of automatic transmission sets up the adaptive approach of clutch binding site oil pressure Download PDFInfo
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- CN106763726A CN106763726A CN201611061523.2A CN201611061523A CN106763726A CN 106763726 A CN106763726 A CN 106763726A CN 201611061523 A CN201611061523 A CN 201611061523A CN 106763726 A CN106763726 A CN 106763726A
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- tar
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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
- F16H61/04—Smoothing ratio shift
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
When meeting constant speed, constant throttle and constant gear holding simultaneously the present invention relates to the adaptive approach that a kind of automatic transmission sets up clutch binding site oil pressure, in vehicle travel process, following control operation is carried out：Operation a and operation b, a are carried out successively:The slippage of OG clutches is controlled, the slip control of OG clutches in target slippage ntar, b:Oil is rushed to OC clutches；When | nact‑ntar|>nthrWhen, reduce the combination dot command oil pressure P of OC clutcheskp；Repeat the control operation until | nact‑ntar|≤nthr, wherein nactIt is actual slippage, and to meet | nact‑ntar|≤nthrWhen PkpOC clutch controls when value is shifted gears；When self adaptation action occurs, OG clutch pressures drop to oil pressure Ppi, using PI controls clutch slip control in desired value ntar.Work as PkpWhen too high；Relation thus according to actual slippage and target slippage suitably reduces Pkp.So as to realize the self-adaptative adjustment of clutch binding site oil pressure.
Description
Technical field
Clutch combination is set up the present invention relates to automatic transmission field, more particularly to a kind of clutch of automatic transmission
The adaptive approach of point oil pressure.
Background technology
Once shift gears and be divided into some stages in control, the control in each stage has particular requirement, and combines clutch
Device and separation clutch need to coordinate and suitably just can guarantee that shift quality.
The current country of AT automatic transmission control softwares is substantially at space state, and external being even more is led in automatic transmission
Domain carries out technology blockage to adaptive technique.
One complete shift process of AT automatic transmission can be divided into 3 stages, be respectively to set up oil pressure, moment of torsion and speed
Degree phase, its medium velocity refers to mutually rotating speed transition stage of the AT automatic transmission in shift process；Moment of torsion refers to that AT becomes automatically
Moment of torsion switching phase of the fast device in shift process；Oil-filled refers to oil pressure establishment stage of the automatic transmission in shift process；
Offgoing clutches, and abbreviation OG clutches, need the clutch opened during shift of transmission；Oncoming clutches
Device, and abbreviation OC clutches, need the clutch for combining during shift of transmission.
As shown in figure 3, during gearshift, OG clutch pressures go straight down to 0, and OC clutch pressures from 0 begin setting up by
Gradually lifted, after moment of torsion and speed phase, gearshift is completed.Secondary speed can also change in this process, in speed phase
There is transition in the stage.Oil pressure establishment stage, order oil pressure herein by the way of triangular wave is oil-filled, P in figurekpIt is the knot of clutch
Chalaza order oil pressure, dotted line show actual oil pressure, and under normal circumstances, actual oil pressure can follow order oil pressure to rise, smoothly complete
Into moment of torsion and speed phase, but if PkpIt is too high, it will to cause very big excessively oil-filled shift shock, have a strong impact on gearshift flat
It is pliable, it is illustrated in fig. 4 shown below.
When impact occurs, secondary speed can occur saltus step, therefore P by raised actual oil shockkpValue it is whether suitable
It is particularly important, can not be too high.And in actual volume production project, every P of gearboxkpDemand is different, and same gearbox exists
P in life cyclekpAlso can gradually change, can be because PkpIt is improper and cause shift shock.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of self-adaptative adjustment that can realize clutch binding site oil pressure,
So as to be prevented effectively from oil-filled shift shock, so as to ensure that the automatic transmission for keeping off ride comfort sets up clutch binding site oil pressure
Adaptive approach.
In order to solve the above technical problems, the technical scheme is that：A kind of automatic transmission sets up clutch binding site
The adaptive approach of oil pressure, when meeting constant speed, constant throttle and constant gear holding in vehicle travel process simultaneously, enters
The following control operation of row：Operation a and operation b, a are carried out successively:The slippage of OG clutches is controlled, the slip control of OG clutches
In target slippage ntar, b:Oil is rushed to OC clutches；When | nact-ntar|>nthrWhen, reduce the combination dot command oil pressure of OC clutches
Pkp；Repeat the control operation until | nact-ntar|≤nthr, wherein nactIt is actual slippage, and to meet | nact-ntar|≤
nthrWhen PkpOC clutch controls when value is shifted gears.
As preferred technical scheme, when controlling the slippage of OG clutches by the way of PI is controlled.
As preferred technical scheme, satisfaction is being obtained | nact-ntar|≤nthrWhen PkpAfter value, in vehicle travel process
When meeting constant speed, constant throttle and constant gear holding simultaneously, proceed the control operation.
By adopting the above-described technical solution, a kind of automatic transmission sets up the self adaptation side of clutch binding site oil pressure
Method, when meeting constant speed, constant throttle and constant gear holding in vehicle travel process simultaneously, carries out following control behaviour
Make：Operation a and operation b, a are carried out successively:The slippage of OG clutches is controlled, the slip control of OG clutches in target slippage
ntar, b:Oil is rushed to OC clutches；When |nact-ntar|>nthrWhen, reduce the combination dot command oil pressure P of OC clutcheskp；Repeat institute
State control operation until | nact-ntar|≤nthr, wherein nactIt is actual slippage, and to meet | nact-ntar|≤nthrWhen Pkp
OC clutch controls when value is shifted gears；When self adaptation action occurs, OG clutch pressures drop to oil pressure Ppi, controlled using PI
System is clutch slip control in desired value ntar.Work as PkpWhen just suitable, OC clutches are just contacted, will not be to reality
Slippage nactImpact, exactly equal to target slippage ntar, secondary speed being capable of held stationary；Work as PkpWhen too high, in OC clutches
Under the influence of device, actual slippage nactWill change, target slippage n certainly will be more thantar；It is possible thereby to according to actual slippage and
The relation of target slippage suitably reduces Pkp.So as to realize the self-adaptative adjustment of clutch binding site oil pressure, so as to be prevented effectively from
Oil-filled shift shock is crossed, so as to ensure to keep off ride comfort.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
Other accompanying drawings are obtained with according to these accompanying drawings.
Fig. 1 is the adaptive principle schematic diagram of the embodiment of the present invention；
Fig. 2 is the control process schematic diagram of the embodiment of the present invention；
Fig. 3 is secondary speed variation diagram during AT automatic transmission shifts；
Fig. 4 is AT automatic transmission PkpThe schematic diagram of too high influence smooth gear shifting.
Specific embodiment
As shown in Fig. 2 a kind of automatic transmission sets up the adaptive approach of clutch binding site oil pressure, vehicle travel process
In when meeting that speed is constant, throttle is constant and gear keeps constant simultaneously, carry out following control operation：Operation a is carried out successively
With operation b, a:The slippage of OG clutches is controlled, the slip control of OG clutches in target slippage ntar, b:Rushed to OC clutches
Oil；When | nact-ntar|>nthrWhen, reduce the combination dot command oil pressure P of OC clutcheskp；Repeat the control operation until | nact-
ntar|≤nthr, wherein nactIt is actual slippage, nthrTo demarcate gained, and to meet | nact-ntar|≤nthrWhen PkpBe worth into
OC clutch controls during row gearshift.P in figurestepTo reduce step-length, gained is demarcated.When correspondence clutch is shifted gears, with
Meet | nact-ntar|≤nthrWhen PkpValue Pkp(n+1) as new PkpCarry out gearshift control.
When controlling the slippage of OG clutches by the way of PI is controlled, PI controls are constituted according to set-point and real output value
Control deviation, controlled quentity controlled variable is constituted by the ratio (P) of deviation and integration (I) by linear combination, and control target is controlled.
Obtaining satisfaction | nact-ntar|≤nthrWhen PkpSpeed is met after value, in vehicle travel process simultaneously permanent
When fixed, throttle is constant and gear keeps constant, proceed the control operation.
As shown in figure 1, when self adaptation action occurs, OG clutch pressures drop to oil pressure Ppi, using PI controls clutch
Device slip control is in desired value ntar.Work as PkpWhen just suitable, OC clutches are just contacted, will not be to actual slippage nactMake
Into influence, exactly equal to target slippage ntar, secondary speed being capable of held stationary；Work as PkpWhen too high, in the influence of OC clutches
Under, actual slippage nactWill change, target slippage n certainly will be more thantar；It is possible thereby to according to actual slippage and target slippage
Relation come suitably reduce Pkp.So as to realize the self-adaptative adjustment of clutch binding site oil pressure, so as to be prevented effectively from oil-filled changing
Gear impact, it is ensured that gear ride comfort.
Controlled by the PI of OG clutch slips, OC clutches set up oil pressure afterwards, the two action coordinates；By OC clutches
The mode that device oil pressure sets up influence of the process to OG clutch slips judges that whether setting up the suitable method of oil pressure parameter is carried out certainly
Adapt to.The self-adaptative adjustment of clutch binding site oil pressure is realized, so as to be prevented effectively from oil-filled shift shock, so as to ensure that gear is flat
It is pliable, it is ensured that shift quality.
General principle of the invention, principal character and advantages of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not limited to the above embodiments, simply explanation described in above-described embodiment and specification this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (3)
1. a kind of automatic transmission sets up the adaptive approach of clutch binding site oil pressure, it is characterised in that vehicle travel process
In when meeting that speed is constant, throttle is constant and gear keeps constant simultaneously, carry out following control operation：Operation a is carried out successively
With operation b, a:The slippage of OG clutches is controlled, the slip control of OG clutches in target slippage ntar, b:Rushed to OC clutches
Oil；When | nact-ntar|>nthrWhen, reduce the combination dot command oil pressure P of OC clutcheskp, wherein nactIt is actual slippage；Repeat institute
State control operation until | nact-ntar|≤nthr, and to meet | nact-ntar|≤nthrWhen PkpOC when value is shifted gears from
Clutch is controlled.
2. automatic transmission as claimed in claim 1 sets up the adaptive approach of clutch binding site oil pressure, it is characterised in that：
When controlling the slippage of OG clutches by the way of PI is controlled.
3. automatic transmission as claimed in claim 1 or 2 sets up the adaptive approach of clutch binding site oil pressure, and its feature exists
In：Obtaining satisfaction | nact-ntar|≤nthrWhen PkpMeet that speed is constant, throttle after value, in vehicle travel process simultaneously
When constant and gear keeps constant, proceed the control operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611061523.2A CN106763726B (en) | 2016-11-28 | 2016-11-28 | A kind of automatic transmission establishes the adaptive approach of clutch binding site oil pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611061523.2A CN106763726B (en) | 2016-11-28 | 2016-11-28 | A kind of automatic transmission establishes the adaptive approach of clutch binding site oil pressure |
Publications (2)
| Publication Number | Publication Date |
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| CN106763726A true CN106763726A (en) | 2017-05-31 |
| CN106763726B CN106763726B (en) | 2018-08-24 |
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| CN201611061523.2A Active CN106763726B (en) | 2016-11-28 | 2016-11-28 | A kind of automatic transmission establishes the adaptive approach of clutch binding site oil pressure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163087A (en) * | 2018-09-07 | 2019-01-08 | 汽解放汽车有限公司 | Automatic transmission clutch torque self-adaptation control method |
| CN109441975A (en) * | 2018-12-29 | 2019-03-08 | 盛瑞传动股份有限公司 | Oil pressure adaptive approach and device based on PI control |
| CN109681628A (en) * | 2018-12-28 | 2019-04-26 | 盛瑞传动股份有限公司 | Automatic transmission oil pressure establishment stage clutch adaptive approach and device |
| CN110939730A (en) * | 2019-12-29 | 2020-03-31 | 盛瑞传动股份有限公司 | Control method of clutch in torque exchange stage of automatic gearbox |
| CN112413110A (en) * | 2019-12-30 | 2021-02-26 | 盛瑞传动股份有限公司 | Control method for oil filling time of automatic transmission in quick oil filling stage |
| CN113757357A (en) * | 2020-06-02 | 2021-12-07 | 广州汽车集团股份有限公司 | Oil filling and semi-joint point self-learning method for double-clutch automatic gearbox |
| CN114215861A (en) * | 2021-12-13 | 2022-03-22 | 义乌吉利自动变速器有限公司 | Intelligent clutch adjustment method, device, equipment and storage medium |
| CN114909465A (en) * | 2021-02-07 | 2022-08-16 | 广汽埃安新能源汽车有限公司 | Vehicle upshift control method and device and storage medium |
| CN118257858A (en) * | 2024-05-30 | 2024-06-28 | 盛瑞传动股份有限公司 | Gear switching processing method, device, equipment and medium for vehicle |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163087B (en) * | 2018-09-07 | 2020-08-14 | 一汽解放汽车有限公司 | Self-adaptive control method for torque of automatic transmission clutch |
| CN109163087A (en) * | 2018-09-07 | 2019-01-08 | 汽解放汽车有限公司 | Automatic transmission clutch torque self-adaptation control method |
| CN109681628A (en) * | 2018-12-28 | 2019-04-26 | 盛瑞传动股份有限公司 | Automatic transmission oil pressure establishment stage clutch adaptive approach and device |
| CN109441975A (en) * | 2018-12-29 | 2019-03-08 | 盛瑞传动股份有限公司 | Oil pressure adaptive approach and device based on PI control |
| CN110939730A (en) * | 2019-12-29 | 2020-03-31 | 盛瑞传动股份有限公司 | Control method of clutch in torque exchange stage of automatic gearbox |
| CN112460253B (en) * | 2019-12-30 | 2022-05-06 | 盛瑞传动股份有限公司 | Control method for time step length of quick oil filling stage of automatic transmission |
| CN112413110A (en) * | 2019-12-30 | 2021-02-26 | 盛瑞传动股份有限公司 | Control method for oil filling time of automatic transmission in quick oil filling stage |
| CN112460253A (en) * | 2019-12-30 | 2021-03-09 | 盛瑞传动股份有限公司 | Control method for time step length of quick oil filling stage of automatic transmission |
| CN112413110B (en) * | 2019-12-30 | 2022-05-06 | 盛瑞传动股份有限公司 | Control method for oil filling time of automatic transmission in quick oil filling stage |
| CN113757357B (en) * | 2020-06-02 | 2022-12-23 | 广州汽车集团股份有限公司 | Oil filling and semi-joint point self-learning method for double-clutch automatic gearbox |
| CN113757357A (en) * | 2020-06-02 | 2021-12-07 | 广州汽车集团股份有限公司 | Oil filling and semi-joint point self-learning method for double-clutch automatic gearbox |
| CN114909465A (en) * | 2021-02-07 | 2022-08-16 | 广汽埃安新能源汽车有限公司 | Vehicle upshift control method and device and storage medium |
| CN114909465B (en) * | 2021-02-07 | 2024-04-16 | 广汽埃安新能源汽车有限公司 | Vehicle upshift control method, device and storage medium |
| CN114215861A (en) * | 2021-12-13 | 2022-03-22 | 义乌吉利自动变速器有限公司 | Intelligent clutch adjustment method, device, equipment and storage medium |
| CN114215861B (en) * | 2021-12-13 | 2023-09-22 | 义乌吉利自动变速器有限公司 | Intelligent clutch adjusting method, device, equipment and storage medium |
| CN118257858A (en) * | 2024-05-30 | 2024-06-28 | 盛瑞传动股份有限公司 | Gear switching processing method, device, equipment and medium for vehicle |
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| CN106763726B (en) | 2018-08-24 |
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