CN104049650B - Wet type DCT clutch temp control system based on fuzzy control and control method thereof - Google Patents
Wet type DCT clutch temp control system based on fuzzy control and control method thereof Download PDFInfo
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Abstract
The invention discloses a kind of wet type DCT clutch temp control system based on fuzzy control and control method thereof.System is made up of sensor detection module, signal processing module and main control module；Method is after the clutch oil-out of Real-time Collection wet type DCT throws away oil temperature, transmission input shaft rotating speed, clutch 1 clutch plate rotating speed, clutch 2 clutch plate rotating speed, clutch 1 pressure and clutch 2 pressure, it is judged that whether clutch oil-out throws away oil temperature >=threshold value？If clutch oil-out throws away oil temperature,<threshold value then turns cooling electromagnetic valve current constant control mode, if clutch oil-out throws away oil temperature>=threshold value, then clutch temp deviation delta T that will calculatec, clutch temp deviation variation rate d Δ Tc/ dt and unit friction power P, as the input variable of fuzzy control, turns triple input single output fuzzy control method, obtains cooling down the electric current of magnetic valve.It is simple and convenient, it is achieved that control clutch temp fast and accurately.
Description
Technical field
The present invention relates to a kind of wet type DCT clutch temp control system and control method, especially a kind of based on fuzzy
The wet type DCT clutch temp control system controlled and control method thereof.
Background technology
At present, two kinds of speed change gear is had to be widely used in traditional motor vehicles.One is manually to become
Speed device, changes gearratio by stirring the gear engagement position in gear lever switching speed changer, thus reaches the purpose of speed change；
For this manual transmission, in driving procedure, driver needs controlled clutch pedal and gear lever frequently, easily makes to drive
The person of sailing produces sense of fatigue, thus affects the security of driving.Another kind is automatic transmission, can according to vehicle-state automatically
Changing gear ratio, alleviate the burden of driver, improve the security of driving, automatic transmission is adapted to respectively simultaneously
Plant and travel road conditions and driving style.Therefore, one of vehicle trend being increasingly becoming China Automobile Industry of equipment automatic transmission.
Common automatic gearbox can be divided into four kinds: hydraulic automatic speed variator (AT), electrical control automatic manual transmission
Device (AMT), buncher (CVT) and double-clutch automatic gearbox (DCT).Wherein, DCT is recent domestic automobile enterprise
A kind of newer automated transmissions that industry and researcher pay close attention to, it controls the knot of odd number shelves and even gear respectively by double clutch
Structure achieves power shift.Compared with other several automatic transmission, DCT had both inherited the advantage that AMT fuel efficiency is high, protected again
Stay the advantage that AT, CVT gear shift smoothes out, simultaneously because the shortest shift time so that it is there is preferable dynamic property, therefore have
The scope that is widely used and preferable market prospects.
According to the type difference of the clutch that double clutch part in DCT is used, dry type DCT and wet type DCT can be divided into
Two big classes.Though dry type DCT has compact conformation, transmission efficiency high, but owing to thermal capacity own is little, do not force cooling
Device, heat dispersion are poor, easily produce localized hyperthermia, cause shorten service life.Compare, though wet type DCT clutch
Pressure distribution is uniform, can accurately control the transmission moment of torsion of clutch, it is allowed to the starting cunning of long period is rubbed and high tap position rises
Step, Technical comparing is ripe, be widely used, and but needs to be equipped with cooling oil forced heat radiation system, and thermal capacity own is bigger.
Owing to the friction pair number of wet type DCT is more, combining frequently, separation process can produce substantial amounts of heat energy.Separately
Big due to thermal capacity own outward, the speed of thermal change is slow, combine disengaging time shorter in the case of, because of clutch friction
Pair can not get sufficiently cooling down and causing accumulation of heat.Too high temperature can affect the control accuracy of clutch, accelerates clutch
The abrasion of device and thermal failure, affect the life-span of clutch.Meanwhile, clutch temp is too high also can make cooling oil beyond temperature range
And go bad.Accordingly, it is capable to no, wet type DCT clutch temp is effectively controlled most important.
At present, the vehicle of equipment wet type DCT really controls clutch temp according to look-up table, i.e. according to clutch temperature
The clutch oil-out that degree sensor records throws away oil temperature, obtains institute by the artificial temperature-cooling flow table set of inquiry
The uninterrupted of the cooling magnetic valve needed, further according to the electric current-rating curve of cooling magnetic valve itself, it is thus achieved that the coldest
But electromagnetic valve current value, thus control clutch temp.Cooling magnetic valve is electro-hydraulic proportional valve, electromagnetic valve current size and cooling
Uninterrupted is inversely.But, owing to the clutch temp sensor used is thermistor (temperature) sensor, it approximates transmission
Function is first order inertial loop, and having relatively large time delay, i.e. Current Temperatures need to could be the most anti-by sensor after a period of time
Reflect, common lag time be more than 0.5s, easily cause clutch cool down not in time, insufficient, damage friction plate.Additionally, due to from
Clutch temperature control system has the features such as non-linear, complexity, dynamic, and the control mode of above-mentioned look-up table causes control essence
Spend low, clutch temp rate of change is not had inhibitory action, temperature fluctuation can be caused relatively big, affect the normal work of clutch.
Therefore, this area needs are a kind of is capable of the wet type DCT clutch temp that clutch temp quickly, accurately controls
Control method, to control clutch temperature rise, extends its life-span and promotes the service behaviour of DCT vehicle.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the reaction that in prior art, clutch oil temperature sensor also exists to prolong
Slow and that clutch temp control accuracy is low deficiency, it is provided that a kind of wet type DCT clutch temp based on fuzzy control controls system
System.
Another technical problem that the invention solves the problems that is for providing a kind of above-mentioned wet type DCT clutch based on fuzzy control
The control method of temperature control system.
For solving the technical problem of the present invention, the technical scheme used is: wet type DCT clutch based on fuzzy control
Temperature control system includes that clutch oil-out throws away the collection of oil temperature and the output control of cooling electromagnetic valve current, especially
It is,
Consisting of of described control system,
Sensor detection module, for obtaining, the clutch oil-out of wet type DCT throws away oil temperature, transmission input shaft turns
Speed, clutch 1 clutch plate rotating speed, clutch 2 clutch plate rotating speed, clutch 1 pressure and clutch 2 pressure；
Signal processing module, the signal for collecting sensor detection module is filtered Shape correction and makes an uproar with suppression
Acoustic jamming, raising signal quality, and export to main control module；
Main control module, it is made up of computing module and control module, wherein,
Computing module, the clutch oil-out after processing according to described signal processing module throws away oil temperature, speed change
Device power shaft rotating speed, clutch 1 clutch plate rotating speed, clutch 2 clutch plate rotating speed, clutch 1 pressure and clutch 2 calculation of pressure
Clutch temp deviation, clutch temp deviation variation rate and unit friction power,
Control module, the signal after processing according to described signal processing module and the calculating knot of described computing module
Really, it is judged that be suitable for control mode, and calculate and send corresponding current signal give cooling magnetic valve.
Further improvement as wet type DCT clutch temp control system based on fuzzy control:
Described sensor detection module preferably by clutch oil temperature sensor, transmission input shaft speed probe, from
Clutch 1 clutch plate speed probe, clutch 2 clutch plate speed probe, clutch 1 pressure sensor and clutch 2 pressure
Sensor forms.
For solving another technical problem of the present invention, another technical scheme used is: above-mentioned based on Fuzzy Control
The control method of wet type DCT clutch temp control system of system include clutch oil-out throw away oil temperature Real-time Collection and
The output of cooling electromagnetic valve current controls, and particularly key step is as follows:
Step 1, the threshold value of setpoint clutch temperature is >=70 DEG C；
Step 2, the clutch oil-out of Real-time Collection wet type DCT throws away oil temperature, transmission input shaft rotating speed, clutch
1 clutch plate rotating speed, clutch 2 clutch plate rotating speed, clutch 1 pressure and clutch 2 pressure, and judge that clutch oil-out throws away
Oil temperature whether >=threshold value？If clutch oil-out throws away oil temperature, < threshold value then turns cooling electromagnetic valve current constant control side
Formula, if clutch oil-out throws away oil temperature >=threshold value, then turns triple input single output fuzzy control method；
Step 3, the process of triple input single output fuzzy control method is,
Step 3.1, by the clutch oil-out of Real-time Collection in step 2 throw away oil temperature, transmission input shaft rotating speed, from
Clutch 1 clutch plate rotating speed, clutch 2 clutch plate rotating speed, clutch 1 pressure and clutch 2 pressure are computed drawing clutch temperature
Degree deviation delta Tc, clutch temp deviation variation rate d Δ Tc/ dt and unit friction power P, and by clutch temp deviation delta Tc, clutch
Device temperature deviation rate of change d Δ Tc/ dt and unit friction power P is as input variable, and electromagnetic valve current I is as output variable in cooling,
Concurrently set fuzzy set and the domain scope thereof of each input/output variable,
Step 3.2, first by clutch temp deviation delta Tc, clutch temp deviation variation rate d Δ Tc/ dt and unit friction power P
As the input variable of fuzzy control, through change of scale to respective domain scope, then by the membership function of normal distribution
Obtain respective fuzzy value,
Step 3.3, first by fuzzy value and the fuzzy control rule of setting of input variable, is carried out by Mamdani rationalistic method
Fuzzy reasoning, and carry out fuzzy composition computing by MIN-MAX method and draw output variable, then output variable is changed by gravity model appoach
After becoming precise volume, transformed to actual output area through change of scale, obtain cooling down electromagnetic valve current.
Further improvement as the control method of wet type DCT clutch temp control system based on fuzzy control:
Preferably, the electric current of the cooling magnetic valve of cooling electromagnetic valve current constant control mode is 1100mA.
Preferably, clutch temp deviation delta T is calculatedcFormula be Δ Tc=Tc-To, T in formulacFor clutch oil-out
Throw away oil temperature, ToFor temperature threshold.
Preferably, clutch temp deviation variation rate d Δ T is calculatedcThe formula of/dt is
Δ T in formulac(k-1) it is that the clutch temp that kth gathers for-1 time is inclined
Difference, Δ Tc(k) be the clutch temp deviation that gathers of kth time, Δ t be the sampling period of clutch temp deviation.
Preferably, the formula calculating unit friction power P is
Δ ω in formulacrFor transmission input shaft and clutch from
The speed discrepancy of Moving plate, sign (Δ ωcr) it is sign function, μdRub for wet clutch
The coefficient of kinetic friction of pad, S are clutch plunger active area, PnFor the actuating pressure in the piston unit are of clutch, Z
For clutch friction pair number, R0、R1It is respectively the friction plate external diameter of clutch, internal diameter.
Preferably, clutch temp deviation delta TcFuzzy set be { VST, ST, RST, MT, RBT, BT, VBT}, clutch
Device temperature deviation rate of change d Δ TcThe fuzzy set of/dt is { NB, NM, NS, O, PS, PM, PB}, the fuzzy set of unit friction power P
For VSP, SP, MP, RBP, BP, VBP}, cooling electromagnetic valve current I fuzzy set be VSI, SI, MI, RBI, BI, VBI},
Clutch temp deviation delta TcBasic domain be [0,70], domain be [0,1,2,3,4,5,6,7,8,9,10,
11,12,13,14], then quantizing factor k1=14/70=0.2, clutch temp deviation variation rate d Δ TcThe basic domain of/dt is
[-20,20], domain is [-6 ,-5 ,-4 ,-3 ,-2 ,-1,0,1,2,3,4,5,6], then quantizing factor k2=6/20=0.3, slides and rubs
The basic domain of power P is [0,20], and domain is [0,1,2,3,4,5,6,7,8,9,10], then quantizing factor k3=10/20=
0.5, the basic domain of cooling electromagnetic valve current I is [0,1200], and domain is [0,1,2,3,4,5,6,7,8,9,10,11,12],
Then scale factor k4=1200/12=100.
Preferably, the membership function of normal distribution is
Preferably, fuzzy control rule is as shown in the table,
, the sentence connectives and of rule therein uses cap, sentence connectives also to use cup.
Provide the benefit that relative to prior art:
Through using present invention control that the temperature of wet type DCT clutch is carried out under stand environment it was confirmed the present invention
Overcome response delay that in prior art, clutch oil temperature sensor also exists and the low deficiency of clutch temp control accuracy,
Achieve the control fast and accurately to wet type DCT clutch temp.
Accompanying drawing explanation
Fig. 1 is a kind of basic structure schematic diagram of control system in the present invention.
Fig. 2 is a kind of basic step procedure chart of control method in the present invention.
Fig. 3 is the procedure chart of fuzzy control in control method in the present invention.
Fig. 4 is that the clutch to wet type DCT uses the present invention to carry out one of design sketch after management and control.Wherein, Fig. 4 a be from
Clutch temperature deviation curve；Fig. 4 b is clutch slipping power curve；Fig. 4 c is clutch temp deviation variation rate curve；Fig. 4 d
For cooling electromagnetic valve current curve.
Detailed description of the invention
Describe the detailed description of the invention of the present invention below in conjunction with the accompanying drawings in detail, be to show by the embodiment being described with reference to the drawings
Example, it is only used for explaining the present invention, and is not construed as limiting the claims.
Seeing Fig. 1, wet type DCT clutch temp control system based on fuzzy control is placed in automatic transmission Electronic Control
The outside of unit (TCU), it includes that sensor detection module, signal processing module, main control module, main control module therein contain
Computing module and control module.Wherein,
Sensor detection module, for obtaining, the clutch oil-out of wet type DCT throws away oil temperature, transmission input shaft turns
Speed, clutch 1 clutch plate rotating speed, clutch 2 clutch plate rotating speed, clutch 1 pressure and clutch 2 pressure；Under normal circumstances, should
Sensor detection module uses clutch oil temperature sensor, transmission input shaft speed probe, clutch 1 clutch plate rotating speed to pass
Sensor, clutch 2 clutch plate speed probe, clutch 1 pressure sensor and clutch 2 pressure sensor obtain information.Or
Person, clutch oil-out throws away oil temperature, transmission input shaft rotating speed, clutch 1 clutch plate rotating speed, clutch 2 clutch plate turn
Speed, clutch 1 pressure and clutch 2 pressure also can be obtained by other module of vehicle by communication bus (such as CAN)
Take, in this case, it is adaptable to the communication module of this bus can be embedded in inside TCU.
Signal processing module, the signal for collecting sensor detection module is filtered Shape correction and makes an uproar with suppression
Acoustic jamming, raising signal quality, and export to main control module.
Computing module in main control module, the clutch oil-out after processing according to signal processing module throws away oil temperature
Degree, transmission input shaft rotating speed, clutch 1 clutch plate rotating speed, clutch 2 clutch plate rotating speed, clutch 1 pressure and clutch 2
Calculation of pressure clutch temp deviation, clutch temp deviation variation rate and unit friction power.In the present embodiment, clutch temp is inclined
The sampling period of difference is 10ms.
Control module in main control module, relates generally to two kinds of control modes, is respectively the cooling constant control of electromagnetic valve current
Mode processed and triple input single output fuzzy control method.Three inputs refer to clutch temp deviation, clutch temp change of error
Rate and unit friction power, single output refers to cool down electromagnetic valve current.Above two control mode can phase under meeting certain condition
Conversion mutually.
Seeing Fig. 2 and Fig. 3, the control method of the present invention includes that clutch oil-out throws away the Real-time Collection of oil temperature and cold
But the output of electromagnetic valve current controls, and its key step is as follows:
Step 1, the threshold value of setpoint clutch temperature is >=70 DEG C.
Step 2, the clutch oil-out of Real-time Collection wet type DCT throws away oil temperature, transmission input shaft rotating speed, clutch
1 clutch plate rotating speed, clutch 2 clutch plate rotating speed, clutch 1 pressure and clutch 2 pressure, and judge that clutch oil-out throws away
Oil temperature whether >=threshold value？If clutch oil-out throws away oil temperature, < threshold value then turns cooling electromagnetic valve current constant control side
Formula, i.e. sets the electric current cooling down magnetic valve as 1100mA.If clutch oil-out throws away oil temperature >=threshold value, then turn three input lists
Output fuzzy control method.
Step 3, the process of triple input single output fuzzy control method is,
Step 3.1, is thrown away oil temperature, transmission input shaft rotating speed, clutch by the clutch oil-out of step 2 Real-time Collection
Device 1 clutch plate rotating speed, clutch 2 clutch plate rotating speed, clutch 1 pressure and clutch 2 pressure are computed drawing clutch temp
Deviation delta Tc, clutch temp deviation variation rate d Δ Tc/ dt and unit friction power P；Wherein,
Calculate clutch temp deviation delta TcFormula be Δ Tc=Tc-To, T in formulacOil is thrown away for clutch oil-out
Temperature, ToFor temperature threshold.
Calculate clutch temp deviation variation rate d Δ TcThe formula of/dt is
Δ T in formulac(k-1) it is that the clutch temp that kth gathers for-1 time is inclined
Difference, Δ Tc(k) be the clutch temp deviation that gathers of kth time, Δ t be the sampling period of clutch temp deviation.
The formula calculating unit friction power P is
Δ ω in formulacrFor transmission input shaft and clutch from
The speed discrepancy of Moving plate, sign (Δ ωcr) it is sign function, μdRub for wet clutch
The coefficient of kinetic friction of pad, S are clutch plunger active area, PnFor the actuating pressure in the piston unit are of clutch, Z
For clutch friction pair number, R0、R1It is respectively the friction plate external diameter of clutch, internal diameter.
And by clutch temp deviation delta Tc, clutch temp deviation variation rate d Δ Tc/ dt and unit friction power P is as input
Variable, electromagnetic valve current I is as output variable in cooling, concurrently sets fuzzy set and the domain model thereof of each input/output variable
Enclose.Wherein,
Clutch temp deviation delta TcFuzzy set be that { VST, ST, RST, MT, RBT, BT, VBT}, clutch temp is inclined
Difference rate of change d Δ TcThe fuzzy set of/dt be NB, NM, NS, O, PS, PM, PB}, and the fuzzy set of unit friction power P be VSP,
SP, MP, RBP, BP, VBP}, cooling electromagnetic valve current I fuzzy set be VSI, SI, MI, RBI, BI, VBI},
Clutch temp deviation delta TcBasic domain be [0,70], domain be [0,1,2,3,4,5,6,7,8,9,10,
11,12,13,14], then quantizing factor k1=14/70=0.2, clutch temp deviation variation rate d Δ TcThe basic domain of/dt is
[-20,20], domain is [-6 ,-5 ,-4 ,-3 ,-2 ,-1,0,1,2,3,4,5,6], then quantizing factor k2=6/20=0.3, slides and rubs
The basic domain of power P is [0,20], and domain is [0,1,2,3,4,5,6,7,8,9,10], then quantizing factor k3=10/20=
0.5, the basic domain of cooling electromagnetic valve current I is [0,1200], and domain is [0,1,2,3,4,5,6,7,8,9,10,11,12],
Then scale factor k4=1200/12=100.
Step 3.2, first by clutch temp deviation delta Tc, clutch temp deviation variation rate d Δ Tc/ dt and unit friction power P
As the input variable of fuzzy control, through change of scale to respective domain scope；Again by the membership function of normal distribution
Obtain respective fuzzy value；Wherein, the membership function of normal distribution is
Step 3.3, first by fuzzy value and the fuzzy control rule of setting of input variable, is carried out by Mamdani rationalistic method
Fuzzy reasoning, and carry out fuzzy composition computing by MIN-MAX method and draw output variable；Wherein, fuzzy control rule such as following table institute
Show,
, the sentence connectives and of rule therein uses cap, sentence connectives also to use cup,
The fuzzy implicative relationship of Mamdani rationalistic method is represented by cartesian product.
After again output variable being converted into precise volume by gravity model appoach, through change of scale to actual output area, obtain cold
But electromagnetic valve current, i.e. non-Defuzzication use gravity model appoach, finally try to achieve the exact value of output quantity, then are multiplied by described in step 3.1
Scale factor k4, obtain cooling down the current value of magnetic valve.
For verifying the implementation result of the present invention, under stand environment, the control system by being embedded in TCU has carried out wet
The checking that formula DCT clutch temp controls.Obtain control design sketch as shown in Figure 4, from this figure, can be seen that the present invention's
Control method had both had good inhibiting effect to the change of clutch temp rate of change and unit friction power, and robustness is relatively strong, with
Time can realize again clutch temp and control fast and accurately.
The structure of the present invention, feature and action effect are described in detail above, described in it according to the embodiment shown in graphic
It is only presently preferred embodiments of the present invention, but the present invention is not to limit practical range, every conception according to the present invention shown in drawing
The change made, or be revised as the Equivalent embodiments of equivalent variations, still without departing from specification and diagram contained spiritual time, all
Should be within the scope of the present invention.
Claims (7)
1. a wet type DCT clutch temp control system based on fuzzy control, throws away oil temperature including clutch oil-out
Collection and cooling electromagnetic valve current output control, it is characterised in that:
Consisting of of described control system,
Sensor detection module, the clutch oil-out for obtaining wet type DCT throw away oil temperature, transmission input shaft rotating speed,
Clutch 1 clutch plate rotating speed, clutch 2 clutch plate rotating speed, clutch 1 pressure and clutch 2 pressure；
Signal processing module, the signal for collecting sensor detection module is filtered Shape correction and does with suppression noise
Disturb, improve signal quality, and export to main control module；
Main control module, it is made up of computing module and control module, wherein,
Computing module, it is defeated that the clutch oil-out after processing according to described signal processing module throws away oil temperature, speed changer
Enter axle rotating speed, clutch 1 clutch plate rotating speed, clutch 2 clutch plate rotating speed, clutch 1 pressure and clutch 2 calculation of pressure clutch
Device temperature deviation, clutch temp deviation variation rate and unit friction power,
Control module, throws away the comparative result of oil temperature and the setpoint clutch temperature threshold of setting according to clutch oil-out,
Judge the control mode being suitable for, and calculate and send corresponding current signal to cooling magnetic valve.
Wet type DCT clutch temp control system based on fuzzy control the most according to claim 1, is characterized in that sensing
Device detection module by clutch oil temperature sensor, transmission input shaft speed probe, clutch 1 clutch plate speed probe,
Clutch 2 clutch plate speed probe, clutch 1 pressure sensor and clutch 2 pressure sensor composition.
3. a control method for wet type DCT clutch temp control system based on fuzzy control described in claim 1, including
Clutch oil-out throws away Real-time Collection and the control of cooling electromagnetic valve current of oil temperature, it is characterised in that key step is such as
Under:
Step 1, the threshold value of setpoint clutch temperature is >=70 DEG C；
Step 2, the clutch oil-out of Real-time Collection wet type DCT throw away oil temperature, transmission input shaft rotating speed, clutch 1 from
Moving plate rotating speed, clutch 2 clutch plate rotating speed, clutch 1 pressure and clutch 2 pressure, and judge that clutch oil-out throws away oil
Temperature whether >=threshold value；If clutch oil-out throws away oil temperature, < threshold value is then converted to cool down electromagnetic valve current constant control side
Formula, if clutch oil-out throws away oil temperature >=threshold value, is then converted to triple input single output fuzzy control method；
Step 3, the process of triple input single output fuzzy control method is,
Step 3.1, is thrown away oil temperature, transmission input shaft rotating speed, clutch by the clutch oil-out of Real-time Collection in step 2
1 clutch plate rotating speed, clutch 2 clutch plate rotating speed, clutch 1 pressure and clutch 2 pressure are computed showing that clutch temp is inclined
Difference Δ Tc, clutch temp deviation variation rate d Δ Tc/ dt and unit friction power P, and by clutch temp deviation delta Tc, clutch temperature
Degree deviation variation rate d Δ Tc/ dt and unit friction power P is as input variable, and electromagnetic valve current I is as output variable, simultaneously in cooling
Set fuzzy set and the domain scope thereof of each input/output variable,
Step 3.2, first by clutch temp deviation delta Tc, clutch temp deviation variation rate d Δ Tc/ dt and unit friction power P conduct
The input variable of fuzzy control, through change of scale to respective domain scope, then is obtained by the membership function of normal distribution
Respective fuzzy value,
Step 3.3, first by fuzzy value and the fuzzy control rule of setting of input variable, is obscured by Mamdani rationalistic method
Reasoning, and carry out fuzzy composition computing by MIN-MAX method and draw output variable, then output variable is converted into essence by gravity model appoach
Really after amount, through change of scale to actual output area, obtain cooling down electromagnetic valve current.
The control method of wet type DCT clutch temp control system based on fuzzy control the most according to claim 3, its
Feature be cooling electromagnetic valve current constant control mode cooling magnetic valve electric current be 1100mA.
The control method of wet type DCT clutch temp control system based on fuzzy control the most according to claim 3, its
Feature is to calculate clutch temp deviation delta TcFormula be Δ Tc=Tc-To, T in formulacOil temperature is thrown away for clutch oil-out
Degree, ToFor temperature threshold.
The control method of wet type DCT clutch temp control system based on fuzzy control the most according to claim 3, its
Feature is to calculate clutch temp deviation variation rate d Δ TcThe formula of/dt is
Δ T in formulac(k-1) it is the clutch temp deviation of-1 collection of kth, Δ Tc
(k) be the clutch temp deviation that gathers of kth time, Δ t be the sampling period of clutch temp deviation.
The control method of wet type DCT clutch temp control system based on fuzzy control the most according to claim 3, its
Feature is that the formula calculating unit friction power P is
T in formulaq1、Tq2For clutch 1,2 transmission under sliding state of rubbing
Moment of torsion, niFor transmission input shaft rotating speed, nc1、nc2For clutch 1,2 clutch plate rotating speed；Wherein, calculate under sliding state of rubbing from
The formula of clutch transmission moment of torsion is
Δ ω in formulacrFor transmission input shaft and clutch driven plate
Speed discrepancy, sign (Δ ωcr) it is sign function,μdFor friction of wet clutch
The coefficient of kinetic friction, S are clutch plunger active area, PnIt is clutch for the actuating pressure in the piston unit are of clutch, Z
Device number of friction pairs, R0、R1It is respectively the friction plate external diameter of clutch, internal diameter.
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| CN105822761A (en) * | 2016-04-26 | 2016-08-03 | 中国第汽车股份有限公司 | Dual-clutch friction coefficient self-learning method of wet-type dual-clutch automatic transmission |
| CN106527542B (en) * | 2016-10-24 | 2018-08-21 | 陕西科技大学 | A kind of temprature control method of constant speed formula frictional testing machine |
| CN106438763B (en) * | 2016-12-14 | 2019-02-19 | 安徽江淮汽车集团股份有限公司 | A kind of self-learning method and system of wet clutch pressure-current characteristics |
| CN106931157B (en) * | 2017-03-13 | 2018-07-03 | 合肥工业大学 | A kind of double-clutch speed changer shift control method for avoiding dual-clutch gear-shifting power cycle |
| CN109973538A (en) * | 2017-12-27 | 2019-07-05 | 长城汽车股份有限公司 | Wet clutch cooling control system, method and vehicle |
| CN108343733A (en) * | 2018-02-13 | 2018-07-31 | 重庆长安汽车股份有限公司 | A kind of the clutch temp control method and system of wet type DCT |
| CN110110377B (en) * | 2019-04-09 | 2020-05-08 | 东风商用车有限公司 | Temperature estimation method for friction plate of clutch |
| CN110134999A (en) * | 2019-04-12 | 2019-08-16 | 上海交通大学 | A kind of slip clutch transient temperature calculation method based on environment temperature coefficient |
| CN111638414B (en) * | 2020-06-01 | 2021-04-27 | 安徽江淮汽车集团股份有限公司 | Test method, test terminal and storage medium for cooling flow electromagnetic valve |
| CN113864361A (en) * | 2021-10-18 | 2021-12-31 | 中国第一汽车股份有限公司 | Clutch low-temperature starting control method and device and vehicle |
| CN114060500A (en) * | 2021-12-03 | 2022-02-18 | 安徽江淮汽车集团股份有限公司 | Automatic lubricating oil regulation and control system and method for DCT (dual clutch transmission) |
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| KR100570325B1 (en) * | 2004-01-07 | 2006-04-11 | 주식회사 케피코 | rationality check method of oil temperature sensor |
| JP4945139B2 (en) * | 2006-01-27 | 2012-06-06 | 日立オートモティブシステムズ株式会社 | Automotive control device |
| JP4593606B2 (en) * | 2007-09-26 | 2010-12-08 | ジヤトコ株式会社 | Shift control device for automatic transmission |
| CN101532565B (en) * | 2009-04-13 | 2013-07-17 | 同济大学 | Electronic control unit for wet double clutch type automatic gearbox |
| CN201982639U (en) * | 2011-04-08 | 2011-09-21 | 浙江万里扬变速器股份有限公司 | Electric control system of automatic dual clutch transmission |
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2014
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