CN106763726B - A kind of automatic transmission establishes the adaptive approach of clutch binding site oil pressure - Google Patents
A kind of automatic transmission establishes the adaptive approach of clutch binding site oil pressure Download PDFInfo
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- CN106763726B CN106763726B CN201611061523.2A CN201611061523A CN106763726B CN 106763726 B CN106763726 B CN 106763726B CN 201611061523 A CN201611061523 A CN 201611061523A CN 106763726 B CN106763726 B CN 106763726B
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- clutches
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- oil pressure
- clutch
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Classifications
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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
Abstract
The present invention relates to the adaptive approach that a kind of automatic transmission establishes clutch binding site oil pressure, when meeting that speed is constant, throttle is constant and gear remains unchanged simultaneously in vehicle travel process, following control operation is carried out：Operation a is carried out successively and operates b, a:The slippage for controlling OG clutches, the slip controls 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；Control operation is repeated up to | nact‑ntar|≤nthr, wherein nactFor practical slippage, and to meet | nact‑ntar|≤nthrWhen PkpOC clutch controls when value is shifted gears；When adaptive action occurs, OG clutch pressures drop to oil pressure Ppi, clutch slip is controlled in desired value n using PI controlstar.Work as PkpWhen excessively high；Suitably P is reduced thus according to the relationship of practical slippage and target slippagekp.To realize the adaptive adjustment of clutch binding site oil pressure.
Description
Technical field
The present invention relates to automatic transmission fields more particularly to a kind of clutch of automatic transmission to establish clutch combination
The adaptive approach of point oil pressure.
Background technology
Primary shift is divided into several stages in control, and the control in each stage has particular requirement, and combines clutch
Device and separation clutch, which need to coordinate, suitably just can guarantee shift quality.
The current country of AT automatic transmission control softwares is substantially at space state, and external is even more to be led in automatic transmission
Domain carries out technology blockage to adaptive technique.
The complete shift process of AT automatic transmission one can be divided into 3 stages, be to establish oil pressure, moment of torsion and speed respectively
Phase is spent, 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
Torque 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, shift of transmission need open clutch in the process；Oncoming clutches
Device, and abbreviation OC clutches, shift of transmission need the clutch combined in the process.
As shown in figure 3, when shift, OG clutch pressures go straight down to 0, and OC clutch pressures from 0 begin setting up by
It is gradually promoted, after moment of torsion and speed phase, shift is completed.Secondary speed can also change in this process, in speed phase
Transition occurs for the stage.Oil pressure establishment stage, order oil pressure is herein in such a way that triangular wave is oil-filled, P in figurekpFor the knot of clutch
Chalaza order oil pressure, dotted line show practical oil pressure, and under normal circumstances, practical oil pressure can follow order oil pressure to rise, smoothly complete
At moment of torsion and speed phase, but if PkpIt is excessively high, it will to cause very big excessively oil-filled shift shock, it is flat to seriously affect shift
It is pliable, it is illustrated in fig. 4 shown below.
When impact occurs, by the practical oil shock of protrusion saltus step, therefore P can occur for secondary speedkpValue properly whether
It is particularly important, it can not be excessively high.And in practical volume production project, the P of every gearboxkpDemand is different, and same gearbox exists
P in life cyclekpAlso it can gradually change, it can be because of PkpIt is improper and cause shift shock.
Invention content
Technical problem to be solved by the invention is to provide a kind of adaptive adjustment that can realize clutch binding site oil pressure,
To effectively avoid oil-filled shift shock, to ensure that the automatic transmission for keeping off ride comfort establishes 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 establishes clutch binding site
The adaptive approach of oil pressure, when meeting that speed is constant, throttle is constant and gear remains unchanged in vehicle travel process simultaneously, into
The following control operation of row：Operation a is carried out successively and operates b, a:The slippage for controlling OG clutches, 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；Control operation is repeated up to | nact-ntar|≤nthr, wherein nactFor the practical slippage of OG clutches, and to meet |
nact-ntar|≤nthrWhen PkpOC clutch controls when value is shifted gears.
As a preferred technical solution, when the slippage of control OG clutches by the way of PI controls.
Obtaining satisfaction as a preferred technical solution, | nact-ntar|≤nthrWhen PkpAfter value, in vehicle travel process
When meeting that speed is constant, throttle is constant and gear remains unchanged simultaneously, continues the control and operate.
By adopting the above-described technical solution, a kind of automatic transmission establishes the adaptive side of clutch binding site oil pressure
Method carries out following control behaviour when meeting that speed is constant, throttle is constant and gear remains unchanged in vehicle travel process simultaneously
Make：Operation a is carried out successively and operates b, a:The slippage for controlling OG clutches, the slip controls 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 nactFor the practical slippage of OG clutches, and to meet | nact-ntar|
≤nthrWhen PkpOC clutch controls when value is shifted gears；When adaptive action occurs, OG clutch pressures drop to oil pressure
Ppi, clutch slip is controlled in desired value n using PI controlstar.Work as PkpWhen just suitable, OC clutches just connect
It touches, it will not be to practical slippage nactIt impacts, exactly equal to target slippage ntar, secondary speed being capable of held stationary；Work as PkpIt crosses
Gao Shi, under the influence of OC clutches, practical slippage nactIt will change, target slippage n certainly will be more thantar；It is possible thereby to
Suitably P is reduced according to the relationship of practical slippage and target slippagekp.To realize the adaptive tune of clutch binding site oil pressure
It is whole, to effectively avoid oil-filled shift shock, to ensure to keep off ride comfort.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is the adaptive principle schematic diagram of the embodiment of the present invention；
Fig. 2 is the control process schematic 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 excessively high schematic diagram for influencing smooth gear shifting.
Specific implementation mode
As shown in Fig. 2, a kind of automatic transmission establishes the adaptive approach of clutch binding site oil pressure, vehicle travel process
In when meeting that speed is constant, throttle is constant and gear remains unchanged simultaneously, carry out following control operation：Operation a is carried out successively
With operation b, a:The slippage for controlling OG clutches, the slip controls of OG clutches in target slippage ntar, b:It is rushed to OC clutches
Oil；When | nact-ntar|>nthrWhen, reduce the combination dot command oil pressure P of OC clutcheskp；Control operation is repeated up to | nact-
ntar|≤nthr, wherein nactFor the practical slippage of OG clutches, nthrObtained by calibration, and to meet | nact-ntar|≤nthr
When PkpOC clutch controls when value is shifted gears.P in figurestepTo reduce step-length, calibration gained.When corresponding to clutch
When shift, to meet | nact-ntar|≤nthrWhen PkpValue Pkp(n+1) as new PkpCarry out shift control.
When controlling the slippage of OG clutches by the way of PI controls, PI controls are constituted according to given value and real output value
The ratio (P) of deviation and integral (I) are constituted controlled quentity controlled variable by linear combination, controlled control target by control deviation.
Obtaining satisfaction | nact-ntar|≤nthrWhen PkpIt is constant, oily to meet speed simultaneously after value, in vehicle travel process
When the constant and gear of door remains unchanged, continue the control operation.
As shown in Figure 1, when adaptive action occurs, OG clutch pressures drop to oil pressure Ppi, controlled clutch using PI
Device slip control is in desired value ntar.Work as PkpWhen just suitable, OC clutches just contact, will not be to practical slippage nactIt makes
At influence, exactly equal to target slippage ntar, secondary speed being capable of held stationary；Work as PkpWhen excessively high, in the influence of OC clutches
Under, practical slippage nactIt will change, target slippage n certainly will be more thantar；It is possible thereby to according to practical slippage and target slippage
Relationship come suitably reduce Pkp.To realize the adaptive adjustment of clutch binding site oil pressure, to effectively avoid oil-filled change
Gear impact ensures gear ride comfort.
It is controlled by the PI of OG clutch slips, OC clutches establish oil pressure, the two action cooperation later；Pass through OC clutches
The mode that device oil pressure establishes influence of the process to OG clutch slips judges that establishing the whether suitable method of oil pressure parameter carries out certainly
It adapts to.The adaptive adjustment for realizing clutch binding site oil pressure, to effectively avoid oil-filled shift shock, to ensure that gear is flat
It is pliable, ensure shift quality.
The basic principles and main features and advantages of the present invention of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (3)
1. a kind of automatic transmission establishes the adaptive approach of clutch binding site oil pressure, which is characterized in that vehicle travel process
In when meeting that speed is constant, throttle is constant and gear remains unchanged simultaneously, carry out following control operation：Operation a is carried out successively
With operation b, a:The slippage for controlling OG clutches, the slip controls of OG clutches in target slippage ntar, b:It is rushed to OC clutches
Oil；When | nact-ntar|>nthrWhen, reduce the combination dot command oil pressure P of OC clutcheskp, wherein nactFor the practical cunning of OG clutches
Difference；Control operation is repeated up to | nact-ntar|≤nthr, and to meet | nact-ntar|≤nthrWhen PkpValue is changed
OC clutch controls when gear.
2. automatic transmission as described in claim 1 establishes 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 controls.
3. automatic transmission as claimed in claim 1 or 2 establishes the adaptive approach of clutch binding site oil pressure, feature exists
In：Obtaining satisfaction | nact-ntar|≤nthrWhen PkpAfter value, meet that speed is constant, throttle is constant simultaneously in vehicle travel process
And gear continues the control operation when remaining unchanged.
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 |
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| Publication Number | Publication Date |
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| CN106763726A CN106763726A (en) | 2017-05-31 |
| CN106763726B true 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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Families Citing this family (8)
| 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 |
| CN109681628B (en) * | 2018-12-28 | 2020-08-04 | 盛瑞传动股份有限公司 | Clutch self-adaption method and device in oil pressure building stage of automatic transmission |
| CN109441975B (en) * | 2018-12-29 | 2020-07-31 | 盛瑞传动股份有限公司 | Oil pressure self-adaptive method 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 |
| CN111022635A (en) * | 2019-12-30 | 2020-04-17 | 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 |
| 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 |
| 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 |
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| JP2002130461A (en) * | 2000-10-19 | 2002-05-09 | Unisia Jecs Corp | Slip lockup control device for automatic transmission |
| US6832978B2 (en) * | 2003-02-21 | 2004-12-21 | Borgwarner, Inc. | Method of controlling a dual clutch transmission |
| CN104089001A (en) * | 2014-07-01 | 2014-10-08 | 盛瑞传动股份有限公司 | Automobile, and slip frequency control method and system of automatic transmission of automobile |
| US9031752B2 (en) * | 2011-11-18 | 2015-05-12 | Jatco Ltd | Device for controlling automatic transmission |
| CN104976243A (en) * | 2015-07-17 | 2015-10-14 | 上海汽车变速器有限公司 | Precharge oil pressure self-adaption method and system for wet type double clutch automatic gearbox |
| CN105422841A (en) * | 2015-11-30 | 2016-03-23 | 盛瑞传动股份有限公司 | Self-adaptation control method and system for gear shifting of automatic transmission |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002130461A (en) * | 2000-10-19 | 2002-05-09 | Unisia Jecs Corp | Slip lockup control device for automatic transmission |
| US6832978B2 (en) * | 2003-02-21 | 2004-12-21 | Borgwarner, Inc. | Method of controlling a dual clutch transmission |
| US9031752B2 (en) * | 2011-11-18 | 2015-05-12 | Jatco Ltd | Device for controlling automatic transmission |
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| CN106763726A (en) | 2017-05-31 |
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