CN103410960B - Wet-type double-clutch hydraulic control system and control method - Google Patents
Wet-type double-clutch hydraulic control system and control method Download PDFInfo
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- CN103410960B CN103410960B CN201310331840.1A CN201310331840A CN103410960B CN 103410960 B CN103410960 B CN 103410960B CN 201310331840 A CN201310331840 A CN 201310331840A CN 103410960 B CN103410960 B CN 103410960B
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- clutch
- solenoid valve
- duty cycle
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- 230000005540 biological transmission Effects 0.000 abstract description 16
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a wet-type double-clutch hydraulic control system, which comprises a transmission control unit TCU, a drive circuit, electromagnetic valves arranged in parallel on a hydraulic module and two clutches, wherein the transmission control unit TCU, the drive circuit, the electromagnetic valves and the two clutches are sequentially connected to form a closed loop; the duty ratio signal drives the driving circuit to realize the control of the electromagnetic valve, and the electromagnetic valve controls the pressure of the hydraulic module on the clutch, so that the gear shifting action of the clutch is realized. The invention also provides a control method of the wet double-clutch hydraulic control system, and the double-clutch control system can accurately control the DCT pressure and realize good gear shifting pressure control.
Description
Technical field
Automobile clutch technical field of the present invention, specifically, the present invention relates to a kind of wet-type dual-clutch hydraulic control system and hydraulic control method.
Background technique
Because DCT develops based on parallel-axis type manual transmission, therefore it is while inheriting the advantages such as manual transmission transmission efficiency is high, installing space is compact, quality is light, price is low, there is again Starting of Automatic Transmission and the excellent characteristic of property of automatic shft, the significant advantage having vast potential for future development and apply, is mainly manifested in following several aspect:
DCT by the restriction of transmitted power, can be widely used in various vehicle hardly.
The cost of production of DCT is low.
Because DCT develops based on manual transmission, transmission of power remains and relies on clutch and gear, and at the bottom of complexity, domestic gear transmission component manufacturing technology comparative maturity, there is certain technical foundation in most of speed changer manufacturer.For development DCT technology provides condition.
The process units of DCT just can use by transforming a little existing manual speed changer production line, and therefore less for the short newly-increased investment of product up-gradation Period Process of manual transmission factory, production inheritance is good.
Because the range of needs of speed changer is very wide, the application of DCT technology will be not limited only to automotive transmission, in other Transport Machinery industries, also can produce the effect of same application.
Domestic Automotive Industry is started late, the production line of present stage is also main mainly with the manual speed changer of production, today of high growth phase is in automatic transmission, the automatic transmission of domestic automobile is main or in dependence import, therefore development DCT product will produce positive impetus to the ability to develop independently improving China's automatic transmission.Also adapt with China industrial foundation simultaneously
How accurately for dual-clutch transmission (DCT), the hydraulic control of shift process is its difficult point, hydraulic control system pressure, and reaching desirable gearshift effect, is the emphasis of DCT control system's development.
For the deficiency that prior art exists, the present invention is proposed.
Summary of the invention
In order to solve above-mentioned the deficiencies in the prior art, the object of this invention is to provide a kind of Closed-loop pressure control method of wet-type dual-clutch hydraulic control system and many feedbacks, can control DCT pressure accurately, realize good gearshift Stress control.
In order to reach above-mentioned goal of the invention, technological scheme of the present invention realizes as follows:
A kind of wet-type dual-clutch hydraulic control system, comprising is linked in sequence successively forms the gear box control unit TCU1 of closed loop, drive circuit 2, the solenoid valve 6 be set up in parallel on hydraulic module 5, solenoid valve 7 and two clutches 3, clutch 4, wherein, TCU is as whole control system maincenter, will from clutch 3, the pressure P 1 that clutch 4 feeds back, P2 and from solenoid valve 6, the current signal I1 of solenoid valve 7, I2 through with the current goal pressure signal that itself calculates in control system through computing, duty cycle signals is sent to drive circuit 2: solenoid valve 6 dutycycle D1, solenoid valve 7 dutycycle D2, duty cycle signals drives drive circuit 2, thus realizes the control to solenoid valve 6 and solenoid valve 7, the pressure of solenoid valve 6 and solenoid valve 7 hydraulic control module 5 pairs of clutches 3 and clutch 4, thus realizes clutch 3 and clutch 4 gear shifting action.
Present invention also offers the controlling method of above-mentioned wet-type dual-clutch hydraulic control system, comprise the following steps:
A) TCU receives from the feedback pressure value P of clutch and the current feedback values I of solenoid valve;
B) the poor Δ p of target pressure value (P ') and feedback pressure value P is calculated;
C) using Δ p as PID
1input value, output value is electromagnetic valve electric current adjusted value Δ I;
D) calculate Δ I and feedback current I's and I ';
E) using the table look-up input of I ' as desired duty cycle, export and be solenoid valve desired duty cycle D
0;
F) using Δ I as PID
2input, output value is solenoid valve dutycycle correction value D ';
G) desired duty cycle D is calculated
0with dutycycle correction value D ' and, be the control dutycycle of solenoid valve;
H) repeat above-mentioned steps a)-step g), can be calculated the duty cycle control signal of another clutch equally;
I) export the duty cycle control signal of above-mentioned two solenoid valves, realize the accurate control to clutch.
Wherein, TCU-TransimissionControlUnit, gear box control unit;
DCT technology, gear transmission technology+automatic control technology
Advantage of the present invention and good effect are:
Double clutch control system of the present invention can control DCT pressure accurately, realizes good gearshift Stress control; The double clutch pressure feedback controlling method that the present invention proposes can better control double clutch system and meet the desired force value, thus realizes good gearshift control effects.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the present invention better and easily learn wherein many adjoint advantages, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention, wherein:
Fig. 1 is wet-type dual-clutch gear box hydraulic Control system architecture figure of the present invention;
Fig. 2 is hydraulic feedback control block diagram of the present invention;
Fig. 3 is hydraulic feedback control flow chart of the present invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
With reference to accompanying drawing 1, a kind of wet-type dual-clutch hydraulic control system of the present invention, comprising is linked in sequence successively forms the gear box control unit TCU1 of closed loop, drive circuit 2, the solenoid valve 6 be set up in parallel on hydraulic module 5, solenoid valve 7 and two clutches 3, clutch 4, wherein, TCU is as whole control system maincenter, will from clutch 3, the pressure P 1 that clutch 4 feeds back, P2 and from solenoid valve 6, the current signal I1 of solenoid valve 7, I2 through with the current goal pressure signal that itself calculates in control system through computing, duty cycle signals is sent to drive circuit 2: solenoid valve 6 dutycycle D1, solenoid valve 7 dutycycle D2, duty cycle signals drives drive circuit 2, thus realizes the control to solenoid valve 6 and solenoid valve 7, the pressure of solenoid valve 6 and solenoid valve 7 hydraulic control module 5 pairs of clutches 3 and clutch 4, thus realizes clutch 3 and clutch 4 gear shifting action.
With reference to accompanying drawing 2, the controlling method of above-mentioned wet-type dual-clutch hydraulic control system provided by the invention, comprises the following steps:
A) TCU receives from the feedback pressure value P of clutch and the current feedback values I of solenoid valve;
B) the poor Δ p of target pressure value (P ') and feedback pressure value P is calculated;
C) using Δ p as PID
1input value, output value is electromagnetic valve electric current adjusted value Δ I;
D) calculate Δ I and feedback current I's and I ';
E) using the table look-up input of I ' as desired duty cycle, export and be solenoid valve desired duty cycle D
0;
F) using Δ I as PID
2input, output value is solenoid valve dutycycle correction value D ';
G) desired duty cycle D is calculated
0with dutycycle correction value D ' and, be the control dutycycle of solenoid valve;
H) repeat above-mentioned steps a)-step g), can be calculated the duty cycle control signal of another clutch equally;
I) export the duty cycle control signal of above-mentioned two solenoid valves, realize the accurate control to clutch.
With reference to accompanying drawing 3, this gives the controlling method flow process of the control system to accompanying drawing 1, by reference to the accompanying drawings 1 and accompanying drawing 3, specifically detailed being further described below carried out to controlling method of the present invention:
A) TCU1 receives current feedback values I1, the I2 from feedback pressure value P1, the P2 of clutch 3, clutch 4 and solenoid valve 6, solenoid valve 7;
B) target pressure value P1 ', P2 ' and feedback pressure value P1, the poor Δ P1 of P2, Δ P2 is calculated;
Δ P1=target pressure value (P1 ')-feedback pressure value (P1);
Δ P2=target pressure value (P2 ')-feedback pressure value (P2);
C) using Δ P1, Δ P2 as PID
1input value, output value is electromagnetic valve electric current adjusted value Δ I1, Δ I2;
ΔI1=PID
11（ΔP1）；
ΔI2=PID
12（ΔP2）；
D) calculate Δ I and feedback current and I ';
I1 '=Δ I1+ current feedback values (I1);
I2 '=Δ I2+ current feedback values (I2);
E) using I1 ', the I2 ' input of tabling look-up as desired duty cycle, export and be solenoid valve desired duty cycle D
01, D
02;
D
01=table look-up (I1 ');
D
02=table look-up (I2 ');
F) using Δ I1, Δ I2 as PID
2input, output value is solenoid valve dutycycle correction value D1 ', D2 ';
D1’=PID
21（ΔI1）；
D2’=PID
22（ΔI2）
G) desired duty cycle D is calculated
01, D
02with dutycycle correction value D1 ', D2 ' and, be the control dutycycle of solenoid valve 6, solenoid valve 7;
Dutycycle (D1)=D
01+ D1 ';
Dutycycle (D2)=D
02+ D2 ';
I) export duty cycle control signal D1, D2 of above-mentioned two solenoid valves 6,7, realize the accurate control to clutch 3,4.
As mentioned above, embodiments of the invention are explained, but as long as do not depart from inventive point of the present invention in fact and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation is also all included within protection scope of the present invention.
Claims (1)
1. a wet-type dual-clutch hydraulic control method, is characterized in that, comprises the following steps:
A) TCU receives from the feedback pressure value P of clutch and the current feedback values I of solenoid valve;
B) the poor Δ p of target pressure value P ' and feedback pressure value P is calculated;
C) using Δ p as PID
1input value, output value is electromagnetic valve electric current adjusted value Δ I;
D) calculate Δ I and current feedback values I's and I ';
E) using the table look-up input of I ' as desired duty cycle, export and be solenoid valve desired duty cycle D
0;
F) using Δ I as PID
2input, output value is solenoid valve dutycycle correction value D ';
G) desired duty cycle D is calculated
0with dutycycle correction value D ' and, be the control dutycycle of solenoid valve;
H) repeat above-mentioned steps a)-step g), can be calculated the duty cycle control signal of another clutch equally;
I) export the duty cycle control signal of two solenoid valves, realize the accurate control to clutch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310331840.1A CN103410960B (en) | 2013-08-01 | 2013-08-01 | Wet-type double-clutch hydraulic control system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310331840.1A CN103410960B (en) | 2013-08-01 | 2013-08-01 | Wet-type double-clutch hydraulic control system and control method |
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| Publication Number | Publication Date |
|---|---|
| CN103410960A CN103410960A (en) | 2013-11-27 |
| CN103410960B true CN103410960B (en) | 2016-03-30 |
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|---|---|---|---|
| CN201310331840.1A Expired - Fee Related CN103410960B (en) | 2013-08-01 | 2013-08-01 | Wet-type double-clutch hydraulic control system and control method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389998B (en) * | 2014-09-15 | 2017-02-15 | 山东理工大学 | Variable-current reverse gear starting control method of multi-gear wire control automatic transmission |
| CN104389997B (en) * | 2014-09-15 | 2016-10-26 | 山东理工大学 | Electric automobile three keeps off the upshift course control method for use of line traffic control automatic transmission |
| CN104295732B (en) * | 2014-09-15 | 2017-01-18 | 山东理工大学 | Pulse-width-modulation start control method for multiple-gear drive-by-wire automatic gearbox |
| CN105673833B (en) * | 2016-01-11 | 2017-12-05 | 清华大学 | Hydraulic gear-shifting hydraulic control method based on proportion magnetic valve |
| CN106438762B (en) * | 2016-11-30 | 2018-09-25 | 广西玉柴机器股份有限公司 | A kind of hybrid power clutch control structure and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08326887A (en) * | 1995-06-05 | 1996-12-10 | Nissan Motor Co Ltd | Speed change control device of continuously variable transmission |
| JPH11202952A (en) * | 1998-01-16 | 1999-07-30 | Unisia Jecs Corp | Solenoid driving device |
| JP2009014118A (en) * | 2007-07-05 | 2009-01-22 | Mitsubishi Electric Corp | Control device for transmission |
| CN101553673A (en) * | 2006-11-24 | 2009-10-07 | 五十铃自动车株式会社 | Speed change clutch control apparatus |
| JP2011052737A (en) * | 2009-09-01 | 2011-03-17 | Hitachi Automotive Systems Ltd | Control method for transmission, and control method for solenoid valve |
| CN102563054A (en) * | 2010-12-17 | 2012-07-11 | 通用汽车环球科技运作有限责任公司 | Automatic transmission shift quality improved via selective use of closed-loop pressure feedback control |
-
2013
- 2013-08-01 CN CN201310331840.1A patent/CN103410960B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08326887A (en) * | 1995-06-05 | 1996-12-10 | Nissan Motor Co Ltd | Speed change control device of continuously variable transmission |
| JPH11202952A (en) * | 1998-01-16 | 1999-07-30 | Unisia Jecs Corp | Solenoid driving device |
| CN101553673A (en) * | 2006-11-24 | 2009-10-07 | 五十铃自动车株式会社 | Speed change clutch control apparatus |
| JP2009014118A (en) * | 2007-07-05 | 2009-01-22 | Mitsubishi Electric Corp | Control device for transmission |
| JP2011052737A (en) * | 2009-09-01 | 2011-03-17 | Hitachi Automotive Systems Ltd | Control method for transmission, and control method for solenoid valve |
| CN102563054A (en) * | 2010-12-17 | 2012-07-11 | 通用汽车环球科技运作有限责任公司 | Automatic transmission shift quality improved via selective use of closed-loop pressure feedback control |
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| CN103410960A (en) | 2013-11-27 |
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Address after: 102606 Beijing City Economic Development Zone, Daxing District Caiyu mining and Road No. 1 Applicant after: BAIC BJEV Address before: 102606 Beijing City Economic Development Zone, Daxing District Caiyu mining and Road No. 1 Applicant before: Beijing Automobile New Energy Automobile Co.,Ltd. |
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Granted publication date: 20160330 |