CN105782286A - Oil charging self-adaptive control method and system for wet clutch - Google Patents
Oil charging self-adaptive control method and system for wet clutch Download PDFInfo
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- CN105782286A CN105782286A CN201610225666.6A CN201610225666A CN105782286A CN 105782286 A CN105782286 A CN 105782286A CN 201610225666 A CN201610225666 A CN 201610225666A CN 105782286 A CN105782286 A CN 105782286A
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- oil
- clutch
- filled
- corrected parameter
- offset
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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
- F16D48/02—Control by fluid pressure
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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
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/70—Details about the implementation of the control system
- F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
- F16D2500/70402—Actuator parameters
- F16D2500/70406—Pressure
Abstract
The invention discloses an oil charging self-adaptive control method and a system for a wet clutch. The method comprises the following steps: a present clutch oil charging state is obtained under a peristalsis working condition; when the present clutch oil charging state is an oil charging control state, a present clutch target pressure is obtained; in a preset adjusting time length, the present clutch target pressure is adjusted to a semi-joint point of the clutch; after the adjustment is finished, in a preset integral control time length, a correction parameter of an oil charging compensation value is obtained according to the relation between a difference value of the semi-joint point and actual pressure of the clutch and the correction parameter of the oil charging compensation value; the oil charging compensation value is corrected according to the correction parameter of the oil charging compensation value to obtain a corrected oil charging compensation value; and target pressure of the clutch is adjusted according to the corrected oil charging compensation value. The method can adjust the target pressure value of the clutch to the semi-joint point in the stated time, and can prevent such problems as vehicle impact or even suppressed flameout of an engine.
Description
Technical field
The present invention relates to Clutch Control field, particularly to a kind of oil-filled self-adaptation control method for wet clutch and system.
Background technology
Wet clutch is widely used in automatic gear-box, its operation principle is as described below: in clutch cohesive process, pressure oil enters clutch oil cylinder side through oil duct, promotes piston to move pressing friction sheet to opposite side, makes clutch active/driven limit realize being synchronized with the movement.In clutch Oil feeding process, pressure relief vent is blocked thing and seals, and therefore no pressure oil is revealed；And in the stage of draining the oil, obstacle no longer blocks pressure relief vent under centrifugal action, open pressure relief vent so that clutch active/driven limit realizes separating.
Wriggling operating mode refer to driver's releasing of brake pedal and not accelerator pedal when, vehicle can under electromotor be in idle state, the operating mode being advanced slowly or retreating, as shown in Figure 1.Half hitch chalaza (kisspoint point) refers to that clutch just can transmit the pressure of moment of torsion.In actual applications, it is necessary to the pressure controlling clutch is rapidly achieved the kisspoint point pressure of clutch from 0kpa, and car load otherwise can be caused to be short of power；In addition, kisspoint point can change along with the change of gear box oil gentleness clutch state, if not can select that suitable kisspoint point, can cause when car load travels under wriggling operating mode, vehicle has the phenomenon that impact is felt and/or slipping of clutch is serious to occur, and electromotor even can be occurred to be suppressed flame-out phenomenon.
Summary of the invention
The invention provides a kind of oil-filled self-adaptation control method for wet clutch and system, solve prior art cannot guarantee that the pressure of clutch is rapidly achieved half hitch chalaza, and half hitch chalaza can change the problem that the pressure control accuracy causing clutch is inadequate.
The invention provides a kind of oil-filled self-adaptation control method for wet clutch, including:
Obtain when the oil-filled state of front clutch in wriggling operating mode；
When the oil-filled state of front clutch is oil-filled controlled state, obtain when front clutch goal pressure；
In default adjustment duration, front clutch goal pressure will be worked as and adjust clutch half hitch chalaza；
After adjustment terminates, in default integration control duration, according to the relation between the corrected parameter of the difference of half hitch chalaza and clutch actual pressure and oil-filled offset, obtain the corrected parameter of oil-filled offset；
Oil-filled offset is modified by the corrected parameter according to oil-filled offset, obtains revised oil-filled offset；
Clutch goal pressure is adjusted according to revised oil-filled offset.
Preferably, described in default adjustment duration, front clutch goal pressure will be worked as and adjust clutch half hitch chalaza and include:
Obtain when the difference of front clutch goal pressure with clutch half hitch chalaza；
Adjust duration and when the difference of front clutch goal pressure with clutch half hitch chalaza according to default, obtain clutch and adjust speed at the pressure adjusted in duration；
Front clutch goal pressure will be worked as according to described pressure adjustment speed and adjust clutch half hitch chalaza.
Preferably, described in default integration control duration, according to the relation between the corrected parameter of the difference of half hitch chalaza and clutch actual pressure and oil-filled offset, the corrected parameter obtaining oil-filled offset includes:
Calculate in described adjustment duration and described integration control duration, the integrated value of the difference of half hitch chalaza and clutch actual pressure；
Determining higher limit and the lower limit of the difference of half hitch chalaza and described integrated value, described higher limit is the product of higher limit coefficient and half hitch chalaza；Described lower limit is the product of lower limit coefficient and half hitch chalaza；
If the difference of half hitch chalaza and described integrated value is more than higher limit or less than lower limit, then according to the relation between the corrected parameter of described integrated value and oil-filled offset, obtain the corrected parameter of the oil-filled offset of the upper limit or the corrected parameter of the oil-filled offset of lower limit.
Preferably, described according to the relation between the corrected parameter of described integrated value and oil-filled offset, the corrected parameter of the corrected parameter or the oil-filled offset of lower limit that obtain the oil-filled offset of the upper limit includes:
By looking into the corrected parameter synopsis of the integrated value corrected parameter synopsis with the oil-filled offset of the upper limit or integrated value and the oil-filled offset of lower limit, obtain the corrected parameter of the described integrated value oil-filled offset of the corresponding upper limit or the corrected parameter of the oil-filled offset of lower limit.
Preferably, when lower limit≤half hitch chalaza and the difference≤higher limit of described integrated value, the corrected parameter of the oil-filled offset of the described upper limit and the corrected parameter of the oil-filled offset of described lower limit are 0.
Preferably, oil-filled offset is modified by the described corrected parameter according to oil-filled offset, obtains revised oil-filled offset and includes:
Oil-filled offset is deducted the corrected parameter of the oil-filled offset of the upper limit, and adds the corrected parameter of the oil-filled offset of bound, as revised oil-filled offset.
Correspondingly, present invention also offers a kind of oil-filled adaptive control system for wet clutch, including:
Clutch state acquisition module, for obtaining when the oil-filled state of front clutch in wriggling operating mode；
Goal pressure acquisition module, for when the oil-filled state of front clutch is oil-filled controlled state, obtaining when front clutch goal pressure；
Pressure adjusting module, for, in default adjustment duration, working as front clutch goal pressure and adjust clutch half hitch chalaza；
Corrected parameter acquisition module, after terminating for adjustment, in default integration control duration, according to the relation between the corrected parameter of the difference of half hitch chalaza and clutch actual pressure and oil-filled offset, obtains the corrected parameter of oil-filled offset；
Offset correcting module, is modified oil-filled offset for the corrected parameter according to oil-filled offset, obtains revised oil-filled offset；
Goal pressure adjusting module, for adjusting clutch goal pressure according to revised oil-filled offset.
Preferably, described pressure adjusting module includes:
Difference acquiring unit, for obtaining when the difference of front clutch goal pressure Yu clutch half hitch chalaza；
Adjust speed acquiring unit, for adjusting duration and when the difference of front clutch goal pressure with clutch half hitch chalaza according to what preset, obtain clutch and adjust speed at the pressure adjusted in duration；
Pressure adjustment unit, adjusts clutch half hitch chalaza for working as front clutch goal pressure according to described pressure adjustment speed.
Preferably, described corrected parameter acquisition module includes:
Integral unit, is used for calculating in described adjustment duration and described integration control duration, the integrated value of the difference of half hitch chalaza and clutch actual pressure；And
Bound determines unit, and for determining higher limit and the lower limit of the difference of half hitch chalaza and described integrated value, described higher limit is the product of higher limit coefficient and half hitch chalaza；Described lower limit is the product of lower limit coefficient and half hitch chalaza；
Corrected parameter acquiring unit, if for the difference of half hitch chalaza and described integrated value more than higher limit or less than lower limit, then according to the relation between the corrected parameter of described integrated value and oil-filled offset, obtain the corrected parameter of the oil-filled offset of the upper limit or the corrected parameter of the oil-filled offset of lower limit.
Preferably, described corrected parameter acquiring unit, specifically for passing through to look into the corrected parameter synopsis of the integrated value corrected parameter synopsis with the oil-filled offset of the upper limit or integrated value and the oil-filled offset of lower limit, obtains the corrected parameter of the described integrated value oil-filled offset of the corresponding upper limit or the corrected parameter of the oil-filled offset of lower limit.
The present invention provides a kind of oil-filled self-adaptation control method for wet clutch and system, by whether wet clutch is wriggling operating mode, and whether clutch is in oil-filled controlled state, judge whether to oil-filled Self Adaptive Control, if, then obtain when front clutch goal pressure, and according to default adjustment duration, front clutch goal pressure will be worked as and adjust clutch half hitch chalaza, so can pass through to set the length legislations adjusting duration and complete above-mentioned adjustment process in how long, prevent owing to clutch goal pressure does not reach kisspoint point at the appointed time, cause the phenomenon that car load is short of power；Then, in default integration control duration, the relation between difference and the corrected parameter of oil-filled offset according to kisspoint point and clutch actual pressure, obtain the corrected parameter of oil-filled offset, this process can compensate owing to oil temperature changes, the reasons such as clutch state change cause the corrected parameter changing corresponding oil-filled offset that kisspoint point occurs, then according to the corrected parameter of oil-filled offset, oil-filled offset is modified, obtain revised oil-filled offset, final according to revised oil-filled offset adjustment clutch goal pressure, can effectively solve to cause that the pressure of actual clutch is improper owing to kisspoint point changes, vehicular impact even electromotor is caused to be suppressed flame-out problem.
Further, the present invention is in default integration control duration, result according to integration control obtains the corrected parameter of oil-filled offset, so, within the time set, the corrected parameter of oil-filled offset is obtained, in follow-up Oil feeding process, can directly adopt corrected parameter that oil-filled offset is adjusted, so neither affect this oil-filled, have adjusted next oil-filled oil-filled offset simultaneously, it is ensured that control the system dynamic adjustment to precharge pressure.
Further, the present invention obtains the integrated value of kisspoint point and the difference of clutch goal pressure by integration control, and set higher limit and the lower limit of the difference of kisspoint point and described integrated value, when the difference of kisspoint point Yu described integrated value exceedes upper lower limit value, then obtain the corrected parameter of oil-filled offset, so it is easily achieved the corrected parameter obtaining oil-filled offset, and by setting the upper lower limit value of difference, giving certain redundancy window under the premise ensureing Adjusting accuracy, algorithm is practical.
Further, the present invention can pass through to look into the corrected parameter synopsis of the integrated value corrected parameter synopsis with the oil-filled offset of the upper limit or integrated value and the oil-filled offset of lower limit, obtain the corrected parameter of the described integrated value oil-filled offset of the corresponding upper limit or the corrected parameter of the oil-filled offset of lower limit, the corrected parameter synopsis of integrated value and the oil-filled offset of the upper limit, the corrected parameter synopsis of integrated value and the oil-filled offset of lower limit can wait means to obtain in advance by experiment, in actual applications, can pass through tables look-up quickly obtains the corrected parameter of oil-filled offset corresponding to integrated value, the corrected parameter of the oil-filled offset of acquisition that can be simple and quick, practical.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, the accompanying drawing used required in embodiment will be briefly described below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the present invention, for those of ordinary skill in the art, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is Automotives Equipped Automatic Transmissions wriggling driving cycle schematic diagram in prior art；
Fig. 2 is a kind of flow chart of oil-filled self-adaptation control method for wet clutch according to embodiments of the present invention；
Fig. 3 is a kind of flow chart of the corrected parameter obtaining oil-filled offset according to embodiments of the present invention；
Fig. 4 is the schematic diagram of various pressure in oil-filled adaptive control process according to embodiments of the present invention；
Fig. 5 is a kind of structural representation of oil-filled adaptive control system for wet clutch according to embodiments of the present invention.
Detailed description of the invention
Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar parameter or has the element of same or like function from start to finish.The embodiment described below with reference to accompanying drawing is illustrative of, and is only used for explaining the present invention, and is not construed as limiting the claims.
A kind of oil-filled self-adaptation control method for wet clutch provided by the invention and system, clutch actual pressure can be allowed from 0kpa to reach the kisspoint point pressure of clutch at the appointed time, in addition, add oil-filled adaptive control system, can solve owing to the change of clutch state or oil temperature causes that kisspoint point changes, make clutch actual pressure improper, cause car load to be short of power or vehicular impact even electromotor is suppressed flame-out problem.
In order to be better understood from technical scheme and technique effect, below with reference to schematic flow sheet, specific embodiment is described in detail.
As in figure 2 it is shown, the inventive method comprises the following steps:
Step S01, obtains when the oil-filled state of front clutch in wriggling operating mode.
In the present embodiment, it is possible to confirm whether current car load driving cycle is wriggling operating mode according to parameters such as current car load speed, brake pressure, accelerator open degree, current shift.In a specific embodiment, if when front gear box gear be positioned at D gear or R gear, current vehicle speed≤5km/h, current throttle aperture be 0 and current brake pressure value more than 5bar, then currently car load driving cycle is wriggling operating mode.Other technology can certainly be adopted to judge whether current car load driving cycle is wriggling operating mode, do not limit at this.Then, obtain when the oil-filled state of front clutch, for instance, the signal etc. obtained by sensor or system confirm when front clutch whether carry out oil-filled.
Step S02, when the oil-filled state of front clutch is oil-filled controlled state, obtains when front clutch goal pressure.
Step S03, in default adjustment duration, will work as front clutch goal pressure and adjust clutch kisspoint point.
In the present embodiment, set according to the actual requirements and adjust duration, such as this adjustment duration may range from 250-450ms, preferably, this adjustment duration is 300ms, front clutch goal pressure will be worked as in adjustment duration and adjust clutch kisspoint point, specifically, it is possible to determine adjustment speed according to difference and the adjustment duration when front clutch goal pressure and clutch kisspoint point.Adjusting speed can be at the uniform velocity, it is also possible to be speed change, for instance sets one and at the uniform velocity adjusts speed, within a specified time reaches to adjust purpose；Certainly, for some specific demands, it is also possible to be multiplied with cosine function, piecewise function etc. by this rate value, the adjustment speed of speed change is obtained.
Step S04, adjusts after terminating, in default integration control duration, according to the relation between the difference of kisspoint point and clutch actual pressure and the corrected parameter of oil-filled offset, obtains the corrected parameter of oil-filled offset.
In the present embodiment, consider that kisspoint point is likely to be due in clutch use procedure and produces the reasons such as abrasion or oil temperature change, cause that kisspoint point changes, so can affect the accuracy of oil-filled control, the present embodiment is according to the relation between difference and the corrected parameter of oil-filled offset of kisspoint point and clutch actual pressure, the corrected parameter of oil-filled offset is obtained in default integration control duration, so that oil-filled offset is adjusted, improve the accuracy of oil-filled control, promote driving comfort and extend clutch service life.
Step S05, is modified oil-filled offset according to the corrected parameter of oil-filled offset, obtains revised oil-filled offset.
Step S06, adjusts clutch goal pressure according to revised oil-filled offset.
In embodiments of the present invention, duration is adjusted by setting so that clutch goal pressure reaches the kisspoint point pressure of clutch at the appointed time, it is to avoid adjustment speed is too low causes that car load is short of power；In addition, add oil-filled adaptive control system, can solve owing to the change of clutch state or oil temperature causes that kisspoint point changes, make clutch actual pressure improper, cause car load to be short of power or vehicular impact even electromotor is suppressed flame-out problem, can effectively promote driving comfort.
In another embodiment, described in default adjustment duration, front clutch goal pressure will be worked as and adjust clutch kisspoint point and can specifically include following steps:
Step S21, obtains when the difference of front clutch goal pressure with clutch half hitch chalaza.
Step S22, adjusts duration and when the difference of front clutch goal pressure with clutch half hitch chalaza according to default, obtains clutch and adjust speed at the pressure adjusted in duration.
In the present embodiment, the expression formula of this pressure adjustment speed can as shown in formula (1):
Wherein, v is that pressure adjusts speed, and p1 is that t2t1 is for adjusting duration, and kisspoint is that quasi integration presses force value when front clutch target pressure value.
Step S23, will work as front clutch goal pressure according to described pressure adjustment speed and adjust clutch half hitch chalaza.
As such, it is possible in desired duration, front clutch goal pressure will be worked as and will adjust clutch kisspoint point according to given pace.
In another embodiment, a kind of flow chart of corrected parameter of oil-filled offset is obtained as shown in Figure 3.Specifically may comprise steps of:
Step S31, calculates in described adjustment duration and described integration control duration, the integrated value of the difference of half hitch chalaza and clutch actual pressure.
In the present embodiment, described adjustment duration is similarly the duration preset according to the actual requirements, and described integrated value can be obtained by integration control, and wherein, the input value of integration control is:Output valve isWherein, t3t1 is described adjustment duration and described integration control duration sum, and as shown in Figure 4, for the schematic diagram of pressure various in oil-filled adaptive control process, wherein, integrated value size is equal to the size of shadow region area value.
Step S32, it is determined that the higher limit of the difference of half hitch chalaza and described integrated value and lower limit, described higher limit is the product of higher limit coefficient and half hitch chalaza；Described lower limit is the product of lower limit coefficient and half hitch chalaza.
In the present embodiment, described higher limit=higher limit coefficient × kisspoint point, described lower limit=lower limit coefficient × kisspoint point.Wherein, higher limit coefficient and lower limit coefficient can empirically or experimentally be determined, in the present embodiment, and may range from of upper limit coefficient: 0.96-1.01；May range from of lower limit coefficient: 0.8-0.97.
It should be noted that step S32 and step S31 is in actual applications regardless of tandem, it is also possible to carry out simultaneously.
Step S33, if the difference of half hitch chalaza and described integrated value is more than higher limit or less than lower limit, then according to the relation between the corrected parameter of described integrated value and oil-filled offset, obtain the corrected parameter of the oil-filled offset of the upper limit or the corrected parameter of the oil-filled offset of lower limit.
In the present embodiment, can pass through to look into the corrected parameter synopsis of the integrated value corrected parameter synopsis with the oil-filled offset of the upper limit or integrated value and the oil-filled offset of lower limit, or by analogue simulation etc., obtain the corrected parameter of the described integrated value oil-filled offset of the corresponding upper limit or the corrected parameter of the oil-filled offset of lower limit.Wherein, above-mentioned synopsis is the corrected parameter that the integrated value that obtained by great many of experiments and up/down limit oil-filled offset, then carrying out what tabulation obtained；The means such as analogue simulation can also be passed through and obtain above-mentioned synopsis.Additionally, in actual applications, it is also possible to limit the corrected parameter of oil-filled offset to be fitted integrated value and up/down, obtain homologous thread, do not limit at this.
In a specific embodiment, this integrated value can be as shown in table 1 with the corrected parameter synopsis of the oil-filled offset of the upper limit:
The corrected parameter synopsis of table 1 integrated value and the oil-filled offset of the upper limit
The corrected parameter synopsis of described integrated value and the oil-filled offset of the upper limit can be as shown in table 2:
The corrected parameter synopsis of table 2 integrated value and the oil-filled offset of lower limit
Such as, when the difference of kisspoint point and described integrated value is more than higher limit, and when integrated value is-5, corrected parameter then should be 3.
Further, when lower limit≤kisspoint point and the difference≤higher limit of described integrated value, the corrected parameter of the oil-filled offset of the described upper limit and the corrected parameter of the oil-filled offset of described lower limit are 0.So, when lower limit≤kisspoint point and the difference≤higher limit of described integrated value, offset can not be adjusted, it is to avoid adjust offset excessively frequently.Specifically, if kisspoint point and integrated value difference are more than higher limit, then corrected parameter is searched from the corrected parameter synopsis of integrated value and the oil-filled offset of the upper limit, otherwise corrected parameter is equal to 0；If kisspoint point and integrated value difference are less than lower limit, then corrected parameter is searched from the corrected parameter synopsis of integrated value and the oil-filled offset of lower limit, otherwise corrected parameter is equal to 0.In the present embodiment, oil-filled offset is modified by the described corrected parameter according to oil-filled offset, obtain revised oil-filled offset and may include that the corrected parameter that oil-filled offset is deducted the oil-filled offset of the upper limit, and add the corrected parameter of the oil-filled offset of bound, as revised oil-filled offset.
In embodiments of the present invention, the integrated value of kisspoint point and the difference of clutch goal pressure is obtained by integration control, and set higher limit and the lower limit of the difference of kisspoint point and described integrated value, when the difference of kisspoint point Yu described integrated value exceedes upper lower limit value, then obtain the corrected parameter of oil-filled offset, so it is easily achieved the corrected parameter obtaining oil-filled offset, and by setting the upper lower limit value of difference, avoiding frequently adjusting oil-filled offset in the premise ensureing Adjusting accuracy, algorithm is practical.
Correspondingly, present invention also offers a kind of oil-filled adaptive control system for wet clutch, as it is shown in figure 5, include:
Clutch state acquisition module 501, for obtaining when the oil-filled state of front clutch in wriggling operating mode；
Goal pressure acquisition module 502, for when the oil-filled state of front clutch is oil-filled controlled state, obtaining when front clutch goal pressure；
Pressure adjusting module 503, for, in default adjustment duration, working as front clutch goal pressure and adjust clutch half hitch chalaza；
Corrected parameter acquisition module 504, after terminating for adjustment, in default integration control duration, according to the relation between the corrected parameter of the difference of half hitch chalaza and clutch actual pressure and oil-filled offset, obtains the corrected parameter of oil-filled offset；
Offset correcting module 505, is modified oil-filled offset for the corrected parameter according to oil-filled offset, obtains revised oil-filled offset；
Goal pressure adjusting module 506, for adjusting clutch goal pressure according to revised oil-filled offset.
In order to ensure that clutch goal pressure reaches kisspoint point at the appointed time, described pressure adjusting module 503 includes:
Difference acquiring unit, for obtaining when the difference of front clutch goal pressure Yu clutch half hitch chalaza；
Adjust speed acquiring unit, for adjusting duration and when the difference of front clutch goal pressure with clutch half hitch chalaza according to what preset, obtain clutch and adjust speed at the pressure adjusted in duration；
Pressure adjustment unit, adjusts clutch half hitch chalaza for working as front clutch goal pressure according to described pressure adjustment speed.
In the present embodiment, described corrected parameter acquisition module 504 includes:
Integral unit, is used for calculating in described adjustment duration and described integration control duration, the integrated value of the difference of half hitch chalaza and clutch actual pressure；
Bound determines unit, and for determining higher limit and the lower limit of the difference of half hitch chalaza and described integrated value, described higher limit is the product of higher limit coefficient and half hitch chalaza；Described lower limit is the product of lower limit coefficient and half hitch chalaza；
Corrected parameter acquiring unit, if for the difference of half hitch chalaza and described integrated value more than higher limit or less than lower limit, then according to the relation between the corrected parameter of described integrated value and oil-filled offset, obtain the corrected parameter of the oil-filled offset of the upper limit or the corrected parameter of the oil-filled offset of lower limit.
As such, it is possible to oil-filled control process later directly adopts corrected parameter oil-filled offset is adjusted, neither affect that this is oil-filled, have adjusted oil-filled oil-filled offset next time, it is ensured that control system dynamically adjusting precharge pressure simultaneously.
Further, described corrected parameter acquiring unit, specifically for passing through to look into the corrected parameter synopsis of the integrated value corrected parameter synopsis with the oil-filled offset of the upper limit or integrated value and the oil-filled offset of lower limit, obtains the corrected parameter of the described integrated value oil-filled offset of the corresponding upper limit or the corrected parameter of the oil-filled offset of lower limit.
Certainly, in actual applications, this system also can farther include: memory module (not shown), for preserving operational blocks which partition system and/or the parameter of arbitrarily unit acquisition, such as: oil-filled offset corrected parameter, clutch goal pressure etc..As such, it is possible to according to existing information, wet clutch is carried out oil-filled Self Adaptive Control.
The oil-filled adaptive control system for wet clutch that the embodiment of the present invention provides, when car load driving cycle is wriggling operating mode, and when clutch is in oil-filled controlled state, obtained when front clutch goal pressure by goal pressure acquisition module 502, and by pressure adjusting module 503, clutch goal pressure is adjusted to kisspoint point, by the relation between the corrected parameter acquisition module 504 difference and the corrected parameter of oil-filled offset according to kisspoint point and clutch actual pressure, obtain the corrected parameter of oil-filled offset, then compensate for value correcting module 505 according to the corrected parameter of oil-filled offset, oil-filled offset to be modified, obtain revised oil-filled offset, goal pressure adjusting module 506 adjusts clutch goal pressure according to revised oil-filled offset.Owing to the corrected parameter of oil-filled offset can reflect the deviation value of current kisspoint point, goal pressure adjusting module utilizes it that clutch goal pressure is adjusted, make clutch pressure control more accurate, driving comfort can be promoted and extend life of clutch.
Each embodiment in this specification all adopts the mode gone forward one by one to describe, between each embodiment identical similar part mutually referring to.Especially for system embodiment, owing to it is substantially similar to embodiment of the method, so describing fairly simple, relevant part illustrates referring to the part of embodiment of the method.System embodiment described above is merely schematic, the wherein said unit illustrated as separating component can be or may not be physically separate, the parts shown as unit can be or may not be physical location, namely may be located at a place, or can also be distributed on multiple artificial window.Some or all of module therein can be selected according to the actual needs to realize the purpose of the present embodiment scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
Above the embodiment of the present invention being described in detail, the present invention is set forth by detailed description of the invention used herein, and the explanation of above example is only intended to help to understand the method and system of the present invention；Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, all will change in specific embodiments and applications, in sum, this specification content should not be construed as limitation of the present invention.
Claims (10)
1. the oil-filled self-adaptation control method for wet clutch, it is characterised in that including:
Obtain when the oil-filled state of front clutch in wriggling operating mode；
When the oil-filled state of front clutch is oil-filled controlled state, obtain when front clutch goal pressure；
In default adjustment duration, front clutch goal pressure will be worked as and adjust clutch half hitch chalaza；
After adjustment terminates, in default integration control duration, according to the relation between the corrected parameter of the difference of half hitch chalaza and clutch actual pressure and oil-filled offset, obtain the corrected parameter of oil-filled offset；
Oil-filled offset is modified by the corrected parameter according to oil-filled offset, obtains revised oil-filled offset；
Clutch goal pressure is adjusted according to revised oil-filled offset.
2. method according to claim 1, it is characterised in that described in default adjustment duration, will work as front clutch goal pressure and adjust clutch half hitch chalaza and include:
Obtain when the difference of front clutch goal pressure with clutch half hitch chalaza；
Adjust duration and when the difference of front clutch goal pressure with clutch half hitch chalaza according to default, obtain clutch and adjust speed at the pressure adjusted in duration；
Front clutch goal pressure will be worked as according to described pressure adjustment speed and adjust clutch half hitch chalaza.
3. method according to claim 1, it is characterized in that, described in default integration control duration, according to the relation between the corrected parameter of the difference of half hitch chalaza and clutch actual pressure and oil-filled offset, the corrected parameter obtaining oil-filled offset includes:
Calculate in described adjustment duration and described integration control duration, the integrated value of the difference of half hitch chalaza and clutch actual pressure；
Determining higher limit and the lower limit of the difference of half hitch chalaza and described integrated value, described higher limit is the product of higher limit coefficient and half hitch chalaza；Described lower limit is the product of lower limit coefficient and half hitch chalaza；
If the difference of half hitch chalaza and described integrated value is more than higher limit or less than lower limit, then according to the relation between the corrected parameter of described integrated value and oil-filled offset, obtain the corrected parameter of the oil-filled offset of the upper limit or the corrected parameter of the oil-filled offset of lower limit.
4. method according to claim 3, it is characterised in that described according to the relation between the corrected parameter of described integrated value and oil-filled offset, the corrected parameter of the corrected parameter or the oil-filled offset of lower limit that obtain the oil-filled offset of the upper limit includes:
By looking into the corrected parameter synopsis of the integrated value corrected parameter synopsis with the oil-filled offset of the upper limit or integrated value and the oil-filled offset of lower limit, obtain the corrected parameter of the described integrated value oil-filled offset of the corresponding upper limit or the corrected parameter of the oil-filled offset of lower limit.
5. method according to claim 3, it is characterised in that if the difference≤higher limit of lower limit≤half hitch chalaza and described integrated value, then the corrected parameter of the oil-filled offset of the upper limit and the corrected parameter of the oil-filled offset of described lower limit are 0.
6. method according to claim 5, it is characterised in that oil-filled offset is modified by the described corrected parameter according to oil-filled offset, obtains revised oil-filled offset and includes:
Oil-filled offset is deducted the corrected parameter of the oil-filled offset of the upper limit, and adds the corrected parameter of the oil-filled offset of bound, as revised oil-filled offset.
7. the oil-filled adaptive control system for wet clutch, it is characterised in that including:
Clutch state acquisition module, for obtaining when the oil-filled state of front clutch in wriggling operating mode；
Goal pressure acquisition module, for when the oil-filled state of front clutch is oil-filled controlled state, obtaining when front clutch goal pressure；
Pressure adjusting module, for, in default adjustment duration, working as front clutch goal pressure and adjust clutch half hitch chalaza；
Corrected parameter acquisition module, after terminating for adjustment, in default integration control duration, according to the relation between the corrected parameter of the difference of half hitch chalaza and clutch actual pressure and oil-filled offset, obtains the corrected parameter of oil-filled offset；
Offset correcting module, is modified oil-filled offset for the corrected parameter according to oil-filled offset, obtains revised oil-filled offset；
Goal pressure adjusting module, for adjusting clutch goal pressure according to revised oil-filled offset.
8. system according to claim 7, it is characterised in that described pressure adjusting module includes:
Difference acquiring unit, for obtaining when the difference of front clutch goal pressure Yu clutch half hitch chalaza；
Adjust speed acquiring unit, for adjusting duration and when the difference of front clutch goal pressure with clutch half hitch chalaza according to what preset, obtain clutch and adjust speed at the pressure adjusted in duration；
Pressure adjustment unit, adjusts clutch half hitch chalaza for working as front clutch goal pressure according to described pressure adjustment speed.
9. system according to claim 7, it is characterised in that described corrected parameter acquisition module includes:
Integral unit, is used for calculating in described adjustment duration and described integration control duration, the integrated value of the difference of half hitch chalaza and clutch actual pressure；And
Bound determines unit, and for determining higher limit and the lower limit of the difference of half hitch chalaza and described integrated value, described higher limit is the product of higher limit coefficient and half hitch chalaza；Described lower limit is the product of lower limit coefficient and half hitch chalaza；
Corrected parameter acquiring unit, if for the difference of half hitch chalaza and described integrated value more than higher limit or less than lower limit, then according to the relation between the corrected parameter of described integrated value and oil-filled offset, obtain the corrected parameter of the oil-filled offset of the upper limit or the corrected parameter of the oil-filled offset of lower limit.
10. system according to claim 9, it is characterized in that, described corrected parameter acquiring unit, specifically for passing through to look into the corrected parameter synopsis of the integrated value corrected parameter synopsis with the oil-filled offset of the upper limit or integrated value and the oil-filled offset of lower limit, obtains the corrected parameter of the described integrated value oil-filled offset of the corresponding upper limit or the corrected parameter of the oil-filled offset of lower limit.
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| CN106286814A (en) * | 2016-10-28 | 2017-01-04 | 安徽江淮汽车股份有限公司 | A kind of oil-filled control method of wet-type dual-clutch and system |
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| CN111365452A (en) * | 2020-03-26 | 2020-07-03 | 泸州容大智能变速器有限公司 | Self-adaptive learning control method in clutch combination process |
| CN111365452B (en) * | 2020-03-26 | 2021-04-23 | 泸州容大智能变速器有限公司 | Self-adaptive learning control method in clutch combination process |
| CN113565895A (en) * | 2020-04-29 | 2021-10-29 | 蜂巢传动科技河北有限公司 | Oil filling method for clutch and vehicle |
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| CN111677855A (en) * | 2020-08-04 | 2020-09-18 | 盛瑞传动股份有限公司 | Control method for oil filling height of automatic transmission in quick oil filling stage |
| CN112112908A (en) * | 2020-10-28 | 2020-12-22 | 北京航空航天大学 | Method for preventing automatic transmission clutch from being overcharged |
| CN112112908B (en) * | 2020-10-28 | 2021-09-07 | 北京航空航天大学 | Method for preventing automatic transmission clutch from being overcharged |
| CN114427580A (en) * | 2020-10-29 | 2022-05-03 | 广州汽车集团股份有限公司 | Self-adaptive control method and device for oil filling of synchronizer |
| CN114427580B (en) * | 2020-10-29 | 2024-02-23 | 广州汽车集团股份有限公司 | Self-adaptive control method and device for oil filling of synchronizer |
| CN112594379A (en) * | 2020-12-23 | 2021-04-02 | 潍柴动力股份有限公司 | Oil charge pressure compensation method and system, continuously variable transmission and vehicle |
| CN113339423A (en) * | 2021-05-31 | 2021-09-03 | 重庆青山工业有限责任公司 | Method for preventing output pressure of wet DCT clutch from being overlarge |
| CN113819159A (en) * | 2021-08-18 | 2021-12-21 | 东风汽车集团股份有限公司 | Pressure control method and system of clutch |
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| CN114110043A (en) * | 2021-11-01 | 2022-03-01 | 中国第一汽车股份有限公司 | Main oil pressure self-adaptive control method, device, equipment and storage medium |
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