CN104653758A - Control method for electromagnetic valve of hydraulic system for vehicle - Google Patents
Control method for electromagnetic valve of hydraulic system for vehicle Download PDFInfo
- Publication number
- CN104653758A CN104653758A CN201310592807.4A CN201310592807A CN104653758A CN 104653758 A CN104653758 A CN 104653758A CN 201310592807 A CN201310592807 A CN 201310592807A CN 104653758 A CN104653758 A CN 104653758A
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- Prior art keywords
- dither
- amplitude
- solenoid valve
- frequency
- hydraulic system
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
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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
- F16H61/0003—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 invention relates to a control method for an electromagnetic valve of a hydraulic system for a vehicle. The hydraulic system is an executing mechanism of an automatic speed changing system of the vehicle, and the electromagnetic valve is used for controlling the oil passage pressure and flow rate of the hydraulic system. The control method includes that receiving a command related to a gear shifting action from the automatic speed changing system; judging whether the gear shifting is needed according to the command; adding flutter current to the main current of the electromagnetic valve when the gear shifting is needed.
Description
Technical field
The present invention relates to automotive transmission technical field, and more specifically, relate to a kind of controlling method of vehicle hydraulic pressure system solenoid valve.
Background technique
Automatic mechanical transmission (AMT:Automatic Manual Transmission) is as a rule a kind of automotive transmission that automatically can change gear ratio in vehicle travel process, thus makes driver need not hand shift.Structure, automatic mechanical transmission (AMT) adds a set of synchronizer and clutch actuating mechanism on traditional speed-changing gear box, realizes the automation of conventional gearbox gearshift clutch thus.Because automatic transmission brings driving comfort, reduces tired advantage, therefore become the developing direction of Modern Car configuration.And AMT is as the one of automatic transmission, due to advantages such as its structure are simple, product inheritance is good, cost is low, transmission efficiency is high, there is wide development space.
AMT can be divided into hydraulic pressure execution AMT according to the difference of actuator, air pressure performs AMT, motor performs AMT, performs AMT at present in the majority with hydraulic pressure, and namely AMT gearshift control has mainly come by hydraulic system.Reduce its cost to improve hydraulic system as the reliability of AMT actuator, prior art is mostly by disposing different types of control valve, controlling valve body, optimizing approach such as performing cylinder structure.On the other hand, working connection system Stress control for automatic speed variator hydraulic system reliability, energy conservation characteristic etc. often also there is conclusive impact.
Summary of the invention
In view of this, the invention provides from working connection control angle to optimize the scheme of mechanical type automatic speed variator hydraulic system.
Particularly, a kind of controlling method of vehicle hydraulic pressure system solenoid valve is provided, described hydraulic system is the actuator of automobile automatic gear system and the solenoid valve comprised for controlling working connection pressure and flow, and described method comprises: receive the instruction relevant with gear shifting action from described automatic speed-changing system; Judge currently whether have gearshift demand according to described instruction; And in the principal current of described solenoid valve, add Dither when having gearshift demand.
According to some embodiments of the present invention, the amplitude of described Dither and frequency are set to make valve core of the electromagnetic valve remain micro-state of quivering.
According to some embodiments of the present invention, described Dither is the fluctuating current with particular amplitude and frequency, wherein arranges amplitude and the frequency of described Dither according to described principal current and oil temperature.
According to some embodiments of the present invention, the amplitude of described Dither comprises main amplitude and pulse amplitude two parts, wherein said main amplitude is determined according to the amplitude of described principal current and oil temperature, and described pulse amplitude is set to get maximum value when Dither starts to act on and be decreased to 0 gradually with the accumulation of flutter time.
According to some embodiments of the present invention, the frequency of described Dither is set, the Dither frequency that wherein lower oil temperature is corresponding higher according to oil temperature.
According to some embodiments of the present invention, when the synchronizer of described automatic speed-changing system or the stability requirement of clutch to described solenoid valve delivery pressure exceed predeterminated level, in described principal current, add described Dither all the time.
According to some embodiments of the present invention, described method removes described Dither at the end of being also included in described gearshift demand from described principal current.
According to some embodiments of the present invention, the described instruction relevant with gear shifting action comprises synchronizer gearshift control command and clutch folding control command.
According to some embodiments of the present invention, described solenoid valve is proportional electromagnetic valve.
The orientation optimization that controlling method provided by the present invention controls from the working connection reliability and stability of hydraulic system as automatic mechanical transmission actuator.By introducing solenoid valve Flutter Control in the control electric current of main oil way of hydraulic system solenoid valve, improve the capability of fast response of hydraulic system for vehicle shift demand, close Flutter Control when nothing gearshift demand simultaneously, decrease the problem of the oil circuit pressurize ability brought because of flutter, make whole hydraulic system more energy-conservation.
Accompanying drawing explanation
Below with reference to drawings and Examples, technological scheme of the present invention is described in further detail.
Fig. 1 shows the hydraulic system example that can realize controlling method provided by the present invention according to embodiments of the invention wherein.
Fig. 2 shows the schematic flow sheet of controlling method according to an embodiment of the invention.
Fig. 3 shows the curve of electromagnetic valve electric current according to an embodiment of the invention.
Embodiment
For making above-mentioned purpose of the present invention, feature and advantage become apparent more, below in conjunction with the drawings and specific embodiments, the present invention are described in further detail.It should be noted that, each structure in accompanying drawing is schematic instead of determinate, and to make those of ordinary skill in the art understand principle of the present invention best, it is not necessarily drawn in proportion.
Fig. 1 shows the hydraulic system example that can realize controlling method provided by the present invention according to embodiments of the invention wherein.As shown in Figure 1, this hydraulic system mainly comprises oil pump 1, accumulator 2, proportional pressure valve 3.1-3.3, proportional flow control valve 4, clutch performs oil cylinder 5, synchronizer performs oil cylinder 6, filter 7, one-way valve 8, temperature transducer 9, pressure transducer 10 and position transducer 11.Generally speaking, the method that enforcement according to the present invention provides is applicable to be provided with solenoid valve with the vehicle hydraulic pressure system of the flow and pressure that control its oil circuit.Typically, solenoid valve can have airtight chamber, through hole is had at diverse location, each hole connects different oil pipes, generally piston mechanism is provided with in the middle of chamber, two sides is respectively arranged with electromagnet, by the coil current changed on electromagnet, valve body is moved, thus opens or close different oil drainage holes.In the actuator as automobile automatic gear system, the hydraulic oil that hydraulic system provides can enter different oil exit pipes, and promoted the piston of oil cylinder by the pressure of oil, piston drives piston rod again, and then drives the various mechanical devices relevant to shift speed change.
Those skilled in the art is it is understood that the hydraulic system shown in Fig. 1 is only schematic, and arranging of Controlling solenoid valve can adopt any known or leaved for development configuration as required.
Fig. 2 shows the schematic flow sheet of controlling method according to an embodiment of the invention.As shown in Figure 1, in order to effectively control main oil way of hydraulic system, first receive the instruction relevant with gear shifting action from automatic mechanical transmission AMT, such as, from synchronizer gearshift control command and the clutch folding control command of AMT.Then, judge currently whether have gearshift demand according to this instruction.And then add Dither when there being gearshift demand in the principal current of the solenoid valve of hydraulic system, described Dither can be the fluctuating current with particular amplitude and frequency.The method can realize in the control unit of AMT (TCU) or in the ECU (Electrical Control Unit) (ECU) of car load.
In one embodiment of the invention, transmission control unit TCU can receive the pressure signal of working connection by rigid line, such as, by pressure transducer 10 and by CAN reception synchronizer gearshift control command and clutch folding control command.TCU can also be configured to come control oil pump and each Controlling solenoid valve respectively by switching signal and current signal.
According to embodiments of the invention, when there being gearshift demand at the control electric current of solenoid valve, namely introducing Dither in principal current, the ability that system responds fast can be improved thus.On the basis of the principal current demand of solenoid valve, add that the Dither of certain frequency and amplitude can eliminate that the static dead band of solenoid valve brings delayed, thus improve the following feature of electric current and pressure or flow, make the response of automatic speed-changing system sensitiveer.
According to embodiments of the invention, at the end of the method can also be included in gearshift demand, from solenoid valve principal current, remove added Dither, wherein can judge whether gearshift demand terminates equally according to the instruction relevant with gear shifting action.The hydraulic shock brought due to Dither likely can aggravate the normal leakage of hydraulic system, therefore cancels the pressurize ability that Dither effect can improve system, thus makes whole system more energy-conservation.
According to another embodiment of the invention, can also when at the synchronizer of automatic speed-changing system or clutch, the stability requirement to solenoid valve delivery pressure exceedes predeterminated level, all the time in principal current, described Dither is added, avoid solenoid valve delivery pressure to decay, meet basic control function demand.Synchronizer is relevant with its mechanical structure to the demand of pressure stability with clutch, such as, when lazy-tongs are provided with pawl to ensure that synchronizer is not thrown off, not high to pressure stability requirements.On the other hand, clutch can be divided into open type and normal close type, then needs depended on pressure to compress for normally disengaged clutch, therefore requires that pressure can not be decayed, otherwise clutch can surprisingly be thrown off.
Fig. 3 shows the curve of electromagnetic valve electric current according to an embodiment of the invention.As shown in Figure 3, I
1represent Dither, I
2represent the principal current of solenoid valve, principal current is the control electric current always existed in solenoid valve.Dither I
1by I
1amplitude and I
1frequency two aspect determines.According to embodiments of the invention, the amplitude of Dither and frequency can be set to make valve core of the electromagnetic valve remain micro-state of quivering.In practice, can carry out testing according to the characteristic of different solenoid valve and determine to make its Dither amplitude keeping micro-state of quivering and frequency.
In the embodiment shown in fig. 3, the amplitude of Dither and frequency can be arranged according to principal current and oil temperature.The frequency of Dither can be set according to oil temperature, the Dither frequency that wherein lower oil temperature is corresponding higher, namely lower frequency be set when high oil temperature, and higher frequency is set when lower oil temperature.In addition, when setting the frequency of each solenoid valve, also should prevent oil circuit from occurring pressure resonates phenomenon.
In the embodiment shown in fig. 3, the amplitude of Dither comprises main amplitude and pulse amplitude two parts.On the one hand, main amplitude can according to principal current I
2amplitude and oil temperature both determine.In practice, can by repeatedly realizing the corresponding relation obtaining principal current amplitude and oil temperature and the main amplitude of Dither in advance, and make form and be stored in advance in the storing mechanism of control unit.When needs add Dither, the main amplitude of the Dither added needed for being determined according to both the current amplitude of principal current I2 and current oil temperature by the mode of tabling look-up.Usually, the main amplitude of Dither that lower oil temperature is usually corresponding higher.
The amplitude setting of Dither is mainly functionally considered with the relation of principal current, may need in some principal current, cancel micro-effect of quivering, namely Dither amplitude is set as 0.For example, for normal-close clutch device, it is in normally off when control electric current is 0, Dither amplitude can be set as 0 in this case.In fact, principal current is set to 0 in this case, and near 0, does not provide Dither.
On the other hand, can also add at Dither and fashionablely arrange pulse amplitude, this pulse amplitude is set to get maximum value when Dither starts to act on and be decreased to 0 gradually with the accumulation of flutter time.That is, this pulse amplitude only just works to access Dither I1 from without Dither I1 at solenoid valve.As shown in Figure 3.Beginning timing from Dither starts effect, this time is flutter time t; The size of pulse amplitude will reduce gradually along with the accumulation of flutter time t, work as t>t
maxtime pulse amplitude will be 0, solenoid valve speed of response can be improved like this, reduce lag time in dead band.Subsequently, the amplitude of Dither and frequency can keep stable the demand of gearshift duration.In addition, when gearshift required time can be determined in advance according to the instruction relevant with gear shifting action, Dither can be added in a period of time before gearshift demand starts.In this case, then impulsive current effect can be cancelled.
In practice, described solenoid valve can be proportional electromagnetic valve, such as, proportional pressure valve 3.1-3.3 shown in Fig. 1 and proportional flow control valve 4.
Be enumerated above some specific embodiments and illustrate the present invention in detail, this a few example is only for principle of the present invention and mode of execution thereof are described, but not limitation of the present invention, without departing from the spirit and scope of the present invention, those of ordinary skill in the art can also make various distortion and improvement.Therefore all equivalent technological schemes all should belong to category of the present invention also by every claim of the present invention is limited.
Claims (9)
1. a controlling method for vehicle hydraulic pressure system solenoid valve, described hydraulic system is the actuator of automobile automatic gear system and described solenoid valve is used to control oil circuit pressure and the flow of described hydraulic system, and it is characterized in that, described method comprises:
Receive the instruction relevant with gear shifting action from described automatic speed-changing system;
Judge currently whether have gearshift demand according to described instruction; And
In the principal current of described solenoid valve, Dither is added when there being gearshift demand.
2. the method for claim 1, is characterized in that, the amplitude of described Dither and frequency are set to make valve core of the electromagnetic valve remain micro-state of quivering.
3. the method for claim 1, is characterized in that, described Dither is the fluctuating current with particular amplitude and frequency, wherein arranges amplitude and the frequency of described Dither according to described principal current and oil temperature.
4. method as claimed in claim 3, it is characterized in that, the amplitude of described Dither comprises main amplitude and pulse amplitude two parts, wherein said main amplitude is determined according to the amplitude of described principal current and oil temperature, and described pulse amplitude is set to get maximum value when Dither starts to act on and be decreased to 0 gradually with the accumulation of flutter time.
5. method as claimed in claim 3, is characterized in that, arrange the frequency of described Dither according to oil temperature, the Dither frequency that wherein lower oil temperature is corresponding higher.
6. method as claimed in claim 1, is characterized in that, when the synchronizer of described automatic speed-changing system or the stability requirement of clutch to described solenoid valve delivery pressure exceed predeterminated level, adds described Dither all the time in described principal current.
7. the method for claim 1, is characterized in that, described method removes described Dither at the end of being also included in described gearshift demand from described principal current.
8. the method for claim 1, is characterized in that, the described instruction relevant with gear shifting action comprises synchronizer gearshift control command and clutch folding control command.
9. the method for claim 1, is characterized in that, described solenoid valve is proportional electromagnetic valve.
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 |
Publications (2)
| Publication Number | Publication Date |
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| CN104653758A true CN104653758A (en) | 2015-05-27 |
| CN104653758B CN104653758B (en) | 2017-03-15 |
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| CN201310592807.4A Active CN104653758B (en) | 2013-11-22 | 2013-11-22 | A kind of control method of vehicle hydraulic pressure system electromagnetic valve |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487245A (en) * | 2015-09-02 | 2017-03-08 | 三菱电机株式会社 | Dither method for controlling power supply and Dither power supply control apparatus |
| CN107664212A (en) * | 2016-07-29 | 2018-02-06 | 丰田自动车株式会社 | The control device of vehicle |
| CN108412912A (en) * | 2017-02-10 | 2018-08-17 | 上海汽车集团股份有限公司 | The Q-I curves method of adjustment and device of flow variable force solenoid valve |
| CN110259939A (en) * | 2019-06-11 | 2019-09-20 | 中国第一汽车股份有限公司 | Adjustment method, apparatus, equipment and the storage medium of automatic transmission |
| CN114294413A (en) * | 2022-01-11 | 2022-04-08 | 中国第一汽车股份有限公司 | Method, device, equipment and medium for correcting boundary current of dead zone of shift flow valve |
| CN114620121A (en) * | 2020-12-11 | 2022-06-14 | 日本电产株式会社 | Control device, control method, motor module, and electric power steering device |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100206553B1 (en) * | 1995-09-14 | 1999-07-01 | 윤종용 | Proportional solenoid valve |
| CN101290073B (en) * | 2008-04-02 | 2010-07-07 | 江苏悦达专用车有限公司 | Electromagnetic switch hydraulic multitandem valve control device |
| CN201779249U (en) * | 2010-08-20 | 2011-03-30 | 江苏大学 | Air-liquid gear-selecting and gear-shifting mechanism for electrically controlled mechanical automatic transmissions |
| CN102359644B (en) * | 2011-10-18 | 2013-02-27 | 中联重科股份有限公司 | System and method for controlling electromagnetic valve |
| CN202914850U (en) * | 2012-10-31 | 2013-05-01 | 佛山市顺德区瑞德电子实业有限公司 | Modified proportional valve drive return circuit |
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2013
- 2013-11-22 CN CN201310592807.4A patent/CN104653758B/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487245A (en) * | 2015-09-02 | 2017-03-08 | 三菱电机株式会社 | Dither method for controlling power supply and Dither power supply control apparatus |
| CN106487245B (en) * | 2015-09-02 | 2019-04-26 | 三菱电机株式会社 | Dither method for controlling power supply and Dither power supply control apparatus |
| CN107664212A (en) * | 2016-07-29 | 2018-02-06 | 丰田自动车株式会社 | The control device of vehicle |
| CN107664212B (en) * | 2016-07-29 | 2019-08-06 | 丰田自动车株式会社 | The control device of vehicle |
| CN108412912A (en) * | 2017-02-10 | 2018-08-17 | 上海汽车集团股份有限公司 | The Q-I curves method of adjustment and device of flow variable force solenoid valve |
| 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 |
| CN110259939A (en) * | 2019-06-11 | 2019-09-20 | 中国第一汽车股份有限公司 | Adjustment method, apparatus, equipment and the storage medium of automatic transmission |
| 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 |
| CN114620121A (en) * | 2020-12-11 | 2022-06-14 | 日本电产株式会社 | Control device, control method, motor module, and electric power steering device |
| CN114294413A (en) * | 2022-01-11 | 2022-04-08 | 中国第一汽车股份有限公司 | Method, device, equipment and medium for correcting boundary current of dead zone of shift 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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| Publication number | Publication date |
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| CN104653758B (en) | 2017-03-15 |
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