CN104653758B - A kind of control method of vehicle hydraulic pressure system electromagnetic valve - Google Patents
A kind of control method of vehicle hydraulic pressure system electromagnetic valve Download PDFInfo
- Publication number
- CN104653758B CN104653758B CN201310592807.4A CN201310592807A CN104653758B CN 104653758 B CN104653758 B CN 104653758B CN 201310592807 A CN201310592807 A CN 201310592807A CN 104653758 B CN104653758 B CN 104653758B
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- Prior art keywords
- dither
- amplitude
- electromagnetic valve
- frequency
- instruction
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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
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
-
- 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
- F16H61/0003—Arrangement or mounting of elements of the control apparatus, e.g. valve assemblies or snapfittings of valves; Arrangements of the control unit on or in the transmission gearbox
- F16H61/0009—Hydraulic control units for transmission control, e.g. assembly of valve plates or valve units
Abstract
The present invention relates to a kind of control method of vehicle hydraulic pressure system electromagnetic valve, the hydraulic system is the actuator of automobile automatic gear system and the electromagnetic valve is used for the oil circuit pressure and flow that control the hydraulic system, and methods described includes：Receive the instruction relevant with gear shifting action from the automatic speed-changing system；Judge currently whether there is gearshift demand according to the instruction；And Dither is added in the case where there is gearshift demand in the principal current of the electromagnetic valve.
Description
Technical field
The present invention relates to automotive transmission technical field, and more particularly, to a kind of vehicle hydraulic pressure system electromagnetic valve
Control method.
Background technology
Automatic mechanical transmission (AMT:Automatic Manual Transmission), it is as a rule that one kind can
To change automatically the automotive transmission of gear ratio in vehicle travel process, so that driver need not hand shift.From
From the point of view of in structure, automatic mechanical transmission (AMT) increased a set of lock unit and clutch on traditional speed-changing gear box
Actuator, is achieved in the automatization of conventional gearbox gearshift clutch.As automatic transmission brings driving comfort, minimizing
The advantage of fatigue, has therefore become the developing direction of Modern Car configuration.And AMT is used as one kind of automatic transmission, due to which
The advantages such as simple structure, product inheritance are good, low cost, transmission efficiency height, have wide development space.
AMT according to the difference of actuator can be divided into hydraulic pressure execute AMT, air pressure execute AMT, motor execute AMT, at present with
Execution AMT is in the majority for hydraulic pressure, i.e. AMT gearshift controls are mainly completed by hydraulic system.In order to improve hydraulic system as AMT
The reliability of actuator and reduce its cost, prior art is mostly by disposing different types of control valve, valve body being entered
Row control, optimization execute the approach such as cylinder structure.On the other hand, the Stress control of working connection system is for automatic transmission hydraulic pressure
The reliability of system, energy conservation characteristic etc. often also have conclusive impact.
Content of the invention
In view of this, the invention provides from the angle of working connection control optimizing mechanical type automatic speed variator hydraulic system
Scheme.
Specifically, a kind of control method of vehicle hydraulic pressure system electromagnetic valve is provided, and the hydraulic system is that vehicle is automatic
The actuator of speed change system and including for controlling the electromagnetic valve of working connection pressure and flow, methods described includes：Receive
The instruction relevant with gear shifting action from the automatic speed-changing system；Judge currently whether there are gearshift need according to the instruction
Ask；And Dither is added in the case where there is gearshift demand in the principal current of the electromagnetic valve.
According to some embodiments of the present invention, the amplitude of the Dither and frequency are arranged to make valve core of the electromagnetic valve begin
Micro- quiver state is kept eventually.
According to some embodiments of the present invention, the Dither is the fluctuating current with particular amplitude and frequency, its
The middle amplitude that the Dither is set according to the principal current and oil temperature and frequency.
According to some embodiments of the present invention, the amplitude of the Dither includes two portions of main amplitude and pulse amplitude
Divide, amplitude and oil temperature determination of the wherein described main amplitude according to the principal current, and the pulse amplitude is arranged to
Dither takes maximum and is gradually decrease to 0 with the accumulation of tremor time when starting to act on.
According to some embodiments of the present invention, the frequency of the Dither, wherein relatively low oil are set according to oil temperature
The corresponding higher Dither frequency of temperature.
According to some embodiments of the present invention, the automatic speed-changing system lock unit or clutch to the electromagnetic valve
When the stability requirement of output pressure exceedes predeterminated level, the Dither is added all the time in the principal current.
According to some embodiments of the present invention, methods described is additionally included at the end of the gearshift demand from the principal current
Middle remove the Dither.
According to some embodiments of the present invention, the instruction relevant with gear shifting action includes lock unit gearshift control instruction
Instruct with clutch folding control.
According to some embodiments of the present invention, the electromagnetic valve is proportional solenoid.
Orientation optimization that control method provided by the present invention is controlled from working connection hydraulic system is automatic as mechanical type
The reliability and stability of speed change system actuator.By introducing electricity in the control electric current of main oil way of hydraulic system electromagnetic valve
Magnet valve Flutter Control, improves hydraulic system for the capability of fast response of vehicle shift demand, while when without gearshift demand
Flutter Control is closed, the problem of the oil circuit pressurize ability that brings because of tremor is reduced, is made whole hydraulic system more energy efficient.
Description of the drawings
Below with reference to drawings and Examples, technical scheme is described in further detail.
Fig. 1 shows that embodiments in accordance with the present invention can realize the hydraulic pressure of control method provided by the present invention wherein
Exemplary system.
Fig. 2 shows the schematic flow sheet of control method according to an embodiment of the invention.
Fig. 3 shows the curve of solenoid valve control electric current according to an embodiment of the invention.
Specific embodiment
Understandable for becoming apparent from the above objects, features and advantages of the present invention, below in conjunction with the drawings and specific embodiments
The present invention is described in further detail.It should be noted that each structure in accompanying drawing be only exemplary rather than determinate, with
Those of ordinary skill in the art are made to be best understood by the principle of the present invention, which is not drawn necessarily to scale.
Fig. 1 shows that embodiments in accordance with the present invention can realize the hydraulic pressure of control method provided by the present invention wherein
Exemplary system.As shown in figure 1, the hydraulic system mainly includes oil pump 1, accumulator 2, proportional pressure valve 3.1-3.3, proportional flow
Valve 4, clutch executes oil cylinder 5, lock unit and executes oil cylinder 6, filter 7, check valve 8, temperature sensor 9, pressure transducer 10
And position sensor 11.In general, be applied to according to the method provided by the enforcement of the present invention to be provided with electromagnetic valve to control
Make the vehicle hydraulic pressure system of the flow and pressure of its oil circuit.Typically, electromagnetic valve can have closed chamber, open in diverse location
There is through hole, each hole connects different oil pipes, and piston mechanism is typically provided with the middle of chamber, and two sides is respectively arranged with electric magnet, lead to
Cross change electric magnet on coil current and make valve body move, so as to be turned on and off different outages.As vehicle from
The actuator of dynamic speed change system, the hydraulic oil provided by hydraulic system can enter different oil exit pipes, by oil pressure come
The piston of oil cylinder is promoted, piston drives piston rod again, and then drives the various machinerys related to shift speed change.
Those skilled in the art controls electromagnetic valve it is understood that the hydraulic system shown in Fig. 1 is only illustrative
Setting can adopt any known or leaved for development configuration as needed.
Fig. 2 shows the schematic flow sheet of control method according to an embodiment of the invention.As shown in figure 1, in order to liquid
Pressure system working connection is effectively controlled, and is received from the relevant with gear shifting action of automatic mechanical transmission AMT first
Instruction, for example from AMT lock unit gearshift control instruction and clutch folding control instruction.Then, sentenced according to the instruction
Whether disconnected currently have gearshift demand.Further, add in the principal current of the electromagnetic valve of hydraulic system in the case where there is gearshift demand
Enter Dither, the Dither can be the fluctuating current with particular amplitude and frequency.The method can be in the control of AMT
Realize in unit (TCU) processed or in the ECU (ECU) of car load.
In one embodiment of the invention, transmission control unit TCU can receive the pressure of working connection by rigid line
Signal, such as receive lock unit gearshift control instruction by pressure transducer 10 and by CAN and clutch folding control refer to
Order.TCU is can be additionally configured to respectively by switching signal and current signal come control oil pump and each control electromagnetic valve.
Embodiments in accordance with the present invention, when there is gearshift demand electromagnetic valve control electric current, i.e., introduce in principal current
Dither, it is possible thereby to improve the ability of system quick response.On the basis of the principal current demand of electromagnetic valve, add certain
It is delayed that frequency and the Dither of amplitude can eliminate that electromagnetic valve static state dead band brings, so as to improve electric current with pressure or flow
Following feature, make the response of automatic speed-changing system sensitiveer.
Embodiments in accordance with the present invention, the method are additionally may included at the end of gearshift demand from electromagnetic valve principal current
Except added Dither, wherein equally can judge according to the instruction relevant with gear shifting action whether gearshift demand is tied
Beam.As the hydraulic shock that Dither brings is possible to the normal leakage that can aggravate hydraulic system, therefore cancel Dither
Effect can improve the pressurize ability of system, so that whole system is more energy efficient.
According to another embodiment of the invention, can be with the lock unit or clutch in automatic speed-changing system to electromagnetic valve
When the stability requirement of output pressure exceedes predeterminated level, the Dither is added all the time in principal current, it is to avoid electromagnetic valve
Output pressure is decayed, and meets basic control function demand.Lock unit and clutch demand and its machinery knot to pressure stability
Structure is relevant, such as in the case where lazy-tongs are provided with pawl to ensure that lock unit is not disengaged, to pressure stability requirements not
High.On the other hand, clutch can be divided into open type and closed type, for normally disengaged clutch then needs depended on pressure to compress, therefore
It is required that pressure can not be decayed, otherwise clutch unexpected can be disengaged.
Fig. 3 shows the curve of solenoid valve control electric current according to an embodiment of the invention.As shown in figure 3, I1Expression is quivered
Shake electric current, I2The principal current of electromagnetic valve is represented, principal current is the control electric current for existing in electromagnetic valve always.Dither I1By I1
Amplitude and I1Determine in terms of frequency two.Embodiments in accordance with the present invention, the amplitude of Dither and frequency can be configured so that and make
Valve core of the electromagnetic valve remains micro- state of quivering.In practice, can be tested to determination according to the characteristic of different electromagnetic valves makes
Which keeps the Dither amplitude of micro- state of quivering and frequency.
In the embodiment shown in fig. 3, the amplitude of Dither and frequency can be set according to principal current and oil temperature
Put.The frequency of Dither can be set according to oil temperature, and the correspondingly higher Dither frequency of wherein relatively low oil temperature exists
Relatively low frequency is set in the case of higher oil temperature, and higher frequency is set in the case of relatively low oil temperature.In addition, to each
When the frequency of individual electromagnetic valve is set, should also prevent oil circuit from pressure covibration occur.
In the embodiment shown in fig. 3, the amplitude of Dither includes two parts of main amplitude and pulse amplitude.One side
Face, main amplitude can be according to principal currents I2Amplitude and oil temperature both determining.In practice, can be by carrying out repeatedly in advance
Realize the corresponding relation for obtaining principal current amplitude and oil temperature and the main amplitude of Dither, and make form being stored in advance in control
In the storing mechanism of unit.When needing to add Dither, by way of tabling look-up according to the current amplitude of principal current I2 with
And the main amplitude of the Dither of addition needed for determining both current oil temperature.Usually, relatively low oil temperature is generally corresponding higher
The main amplitude of Dither.
The amplitude setting of Dither is mainly functionally accounted for the relation of principal current, it may be necessary in some masters
Cancel micro- effect of quivering on electric current, i.e., Dither amplitude is set as 0.For example, for normal-close clutch device, which is in control electricity
Flow for 0 when in normally off, Dither amplitude can be set as 0 in this case.In fact, in this case
Principal current is arranged to 0, and is not provided about Dither 0.
On the other hand, can be to arrange pulse amplitude when Dither is added, the pulse amplitude is arranged in tremor
Electric current takes maximum and is gradually decrease to 0 with the accumulation of tremor time when starting to act on.That is, the pulse amplitude is only
Have electromagnetic valve from without Dither I1 to access Dither I1 be just to work.As shown in Figure 3.Start to make from Dither
Start timing with rising, the time is tremor time t；The size of pulse amplitude will be gradually reduced with the accumulation of tremor time t, when
t>tmaxWhen pulse amplitude will be 0, can so improve electromagnetic valve response speed, reduce the lag time in dead band.Subsequently, tremor
The amplitude of electric current and frequency can keep stable in gearshift demand duration.Additionally, can be according to relevant with gear shifting action
Instruction determine in advance gearshift required time in the case of, tremor can be added in a period of time before gearshift demand starts
Electric current.In this case, then pulse current effect can be cancelled.
In practice, the electromagnetic valve can be proportional solenoid, such as the proportional pressure valve 3.1-3.3 shown in Fig. 1 and
Proportional flow control valve 4.
It is enumerated above some specific embodiments to elaborate the present invention, principle of this few example only for the explanation present invention
And embodiments thereof is used, rather than limitation of the present invention, without departing from the spirit and scope of the present invention, this area
Those of ordinary skill can also make various modifications and improvement.Therefore the technical scheme of all equivalents all should belong to the present invention's
Category is simultaneously limited by every claim of the present invention.
Claims (8)
1. a kind of control method of vehicle hydraulic pressure system electromagnetic valve, the hydraulic system is the execution machine of automobile automatic gear system
Structure and the electromagnetic valve are used for the oil circuit pressure and flow for controlling the hydraulic system, it is characterised in that methods described bag
Include：
Receive the instruction relevant with gear shifting action from the automatic speed-changing system；
Judge currently whether there is gearshift demand according to the instruction；And
Dither is added in the case where there is gearshift demand in the principal current of the electromagnetic valve,
The amplitude of the Dither includes two parts of main amplitude and pulse amplitude, and wherein described main amplitude is according to the main electricity
The amplitude of stream and oil temperature determine, and the pulse amplitude be arranged to take when Dither starts to act on maximum and
0 is gradually decrease to the accumulation of tremor time.
2. the method for claim 1, it is characterised in that the amplitude of the Dither and frequency are arranged to make electromagnetism
Valve core remains micro- state of quivering.
3. the method for claim 1, it is characterised in that the Dither is the fluctuation with particular amplitude and frequency
Electric current, wherein arranges amplitude and the frequency of the Dither according to the principal current and oil temperature.
4. method as claimed in claim 3, it is characterised in that the frequency of the Dither is set according to oil temperature, wherein
The correspondingly higher Dither frequency of relatively low oil temperature.
5. method as claimed in claim 1, it is characterised in that the automatic speed-changing system lock unit or clutch to described
When the stability requirement of electromagnetic valve output pressure exceedes predeterminated level, the tremor electricity is added all the time in the principal current
Stream.
6. the method for claim 1, it is characterised in that methods described is additionally included at the end of the gearshift demand from institute
State.
7. the method for claim 1, it is characterised in that the instruction relevant with gear shifting action includes that lock unit is shifted gears
Control instruction and the instruction of clutch folding control.
8. the method for claim 1, it is characterised in that the electromagnetic valve is proportional solenoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310592807.4A CN104653758B (en) | 2013-11-22 | 2013-11-22 | A kind of control method of vehicle hydraulic pressure system electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310592807.4A CN104653758B (en) | 2013-11-22 | 2013-11-22 | A kind of control method of vehicle hydraulic pressure system electromagnetic valve |
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| Publication Number | Publication Date |
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| CN104653758A CN104653758A (en) | 2015-05-27 |
| CN104653758B true CN104653758B (en) | 2017-03-15 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6129257B2 (en) * | 2015-09-02 | 2017-05-17 | 三菱電機株式会社 | Dither current supply control method and dither current supply control device |
| JP6449820B2 (en) * | 2016-07-29 | 2019-01-09 | トヨタ自動車株式会社 | Vehicle control device |
| CN108412912B (en) * | 2017-02-10 | 2019-12-03 | 上海汽车集团股份有限公司 | The Q-I curve method of adjustment and device of flow variable force solenoid valve |
| CN110259939B (en) * | 2019-06-11 | 2020-11-10 | 中国第一汽车股份有限公司 | Running-in method, device, equipment and storage medium of automatic transmission |
| JP2022093137A (en) * | 2020-12-11 | 2022-06-23 | 日本電産株式会社 | Motor control device, control method, motor module, and electric power steering device |
| CN114294413B (en) * | 2022-01-11 | 2023-05-12 | 中国第一汽车股份有限公司 | Method, device, equipment and medium for correcting dead zone boundary current of gear-shifting flow valve |
| CN115076360A (en) * | 2022-05-13 | 2022-09-20 | 哈尔滨东安汽车发动机制造有限公司 | Control method for preventing VBS valve from being clamped and blocked |
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| CN104653758A (en) | 2015-05-27 |
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