CN104879491B - Synchronized synchronous point discrimination method and system - Google Patents

Synchronized synchronous point discrimination method and system Download PDF

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Publication number
CN104879491B
CN104879491B CN201510209744.9A CN201510209744A CN104879491B CN 104879491 B CN104879491 B CN 104879491B CN 201510209744 A CN201510209744 A CN 201510209744A CN 104879491 B CN104879491 B CN 104879491B
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China
Prior art keywords
shift fork
synchronized
displacement
axial velocity
input shaft
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CN104879491A (en
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鲁统利
张建武
李鸿魁
李育
黄明礼
丁健
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Shanghai Jiaotong University
Shanghai Automobile Gear Works
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Shanghai Jiaotong University
Shanghai Automobile Gear Works
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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
    • F16H61/04—Smoothing ratio shift
    • F16H61/0403—Synchronisation before shifting
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • 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
    • F16H2710/00—Control devices for speed-change mechanisms, the speed change control is dependent on function parameters of the gearing

Abstract

A kind of double-clutch automatic gearbox synchronized synchronous point discrimination method, by gearshift is synchronous start when from real-time tracking input shaft rotating speed and synchronized shift fork axial velocity, and input shaft rotating speed changing value exceed threshold value when track synchronized shift fork axial velocity, less than axial velocity threshold value when the displacement of synchronized shift fork as the synchronous point after renewal.The present invention is with synchronized shift fork speed as main Rule of judgment, with input shaft rotating speed as aiding in Rule of judgment, synchronized clutch collar impact and collision with synchronous ring when enter lock position are avoided well can, reduce noise and abrasion, extend the life-span of synchronized parts, and the information for the accurate synchronous point of synchronized control offer, improve control accuracy and performance.

Description

Synchronized synchronous point discrimination method and system
Technical field
The present invention relates to a kind of technology in automotive transmission field, specifically a kind of for double-clutch automatic gearbox Or synchronized synchronous point discrimination method and the system of the automatic speed changer for machine being similar to therewith.
Background technology
Double-clutch automatic gearbox realizes the action of synchronized by transmission control unit and executing agency, instead of Original gearshift simultaneously operating that is realized by driver.Synchronized part is being grown due to tolerance and part present in part processing Phase produces inevitably abrasion after working, and causes the change of synchronized synchronous point so that controller cannot obtain accurately same Beans-and bullets shooter and transmission control core cannot provide accurate control command so that gearshift simultaneous force can be loaded in advance, this mistake Journey can cause clutch collar increment, with synchronous ring increment, sharp impacts occur, and produce noise, cause increment to be further worn out, and then lead Cause control performance to decline, affect comfortableness and the ride comfort of whole gearshift synchronizing process.
Synchronous point corresponding moment of conventional synchronization point discrimination method identification is often early than synchronized clutch collar and synchronous ring The moment of lock position is entered, and is loaded after this synchronous point and synchronized can be caused to the larger synchronous force of synchronized shift fork There are sharp impacts with the increment of synchronous ring in clutch collar, cause the generation of noise, and exacerbate the abrasion of increment.
Find through the retrieval to prior art, Chinese patent literature CN103867708A discloses (bulletin) day 2014.06.18, the automatic positioning method that a kind of electricity drives the synchronized shift fork of gearbox is disclosed, including：Bag is determined when offline Include positive and negative endpoint location, positive synchronous point position, negative sense synchronous point position and mesh that dead-center position is the synchronized shift fork Cursor position；According to the target location, the position of the synchronized shift fork is corrected when offline；Store the synchronized shift fork The target location；And according to synchronized shift fork be automatically positioned the position for obtaining carried out with the target location for storing right Than synchronizing the deviation compensation of the position of device shift fork online.Said method can solve vehicle due to mill in long run The electricity that the reasons such as damage are caused drives the position disparity of Synchromous device of gearbox.But the technology needs to detect all multi information when offline, and Need to store mass data, and automatic positioning method cannot accurately to detect synchronized when synchronized shift fork deforms true Real position.
Chinese patent literature CN103089987A discloses (bulletin) day 2013.05.08, discloses a kind of automatic transmission The control method of synchronized prediction synchronous point, belongs to automatic transmission technical field.After the completion of gear selecting, detection is input into the method Rotating speed；When input shaft rotating speed changes, the initial time that the moment is prediction synchronous point is defined；From the initial time The moment of prediction duration is begun to pass through, the displacement of the synchronous ring of detection is used as the second synchronous ring displacement；Judge the second synchronous ring displacement Whether standard value is equal to the absolute value of the difference of initial synchronisation point；If unequal, adjust on the basis of initial synchronisation point same The displacement of beans-and bullets shooter；If equal, using initial synchronisation point as synchronous point.The method efficiently avoid the abrasion due to synchronized And the synchronized for causing can not be synchronous problem, be effectively improved shift of transmission quality and its service life.But the technology When synchronized shift fork deforms, it is impossible to accurately obtain the real position of synchronized.
Content of the invention
The synchronous point that the present invention causes because of long term wear for double-clutch automatic gearbox synchronized in prior art is inclined Shifting problem, proposes a kind of synchronized synchronous point discrimination method and system, is that the precise control of synchronized provides reliable synchronous point Position.
The present invention is achieved by the following technical solutions：
The present invention pass through gearshift is synchronous start when from real-time tracking input shaft rotating speed and synchronized shift fork axial velocity, And exceed threshold value 50rad/s in input shaft rotating speed changing value2When track synchronized shift fork axial velocity, first time be less than axle To corresponding synchronized shift fork displacement during threshold speed as the synchronous point after renewal.
The present invention specifically includes following steps：
1), after transmission control unit sends gearshift synch command, start to detect that the displacement of synchronized shift fork and input shaft turn Speed；
2) the synchronized shift fork displacement by detecting, calculates the axially speed for obtaining synchronized shift fork using difference method Degree；
3) when detected input shaft rotating speed changes more than 50rad/s2When, record the moment t of this rotation speed changev；
4) from tvIn the moment, whether synchronized shift fork axial velocity is judged less than threshold speed, when shift fork axial velocity vs Axial velocity threshold value v is less than for the first timebWhen the corresponding moment be designated as synchronous start time ts, the tsSynchronized corresponding to moment Shift fork displacement ssAs the synchronous point after renewal.
The synchronized shift fork displacement is referred to：Synchronized shift fork current location is with respect to shift fork in neutral gear centre position Displacement.
Described difference method is specifically referred to：The displacement of synchronized shift fork and previous sampling time with the present sample time is same The difference of step device shift fork displacement is divided by the sampling interval.
The present invention relates to a kind of system for realizing said method, including：Detection module connected with transmission control unit And central processing module, wherein：Detection module starts after receiving the gearshift synch command that transmission control unit sends, collection The displacement of synchronized shift fork and input shaft rotating speed are simultaneously exported to central processing module, and central processing module carries out axial velocity threshold value and sentences Break and calculate current sync device shift fork displacement, export to transmission control unit after the synchronous point after updating is determined.
Described detection module is specifically included：Synchronizer displacement sensor, input shaft rotating speed sensor, wherein：Synchronized Displacement transducer is arranged at one end of synchronized shift fork and transmits synchronizer displacement information with transmission control unit, and input shaft turns Fast sensor is arranged at input shaft and transmits input shaft rotating speed information with transmission control unit.
Described central processing module is specifically included：Synchronized axial velocity is calculated, and calculates synchronized by difference method Axial velocity, input shaft rotating speed change judge that axial velocity judges.
Technique effect
Compared with prior art, the technique effect of the present invention includes：
In terms of energy consumption：Reduce off-line test link.
Reduce impact in synchronizing process, noise and abrasion.
Description of the drawings
Fig. 1 is schematic diagram of the present invention；
In figure：A is synchronized shift fork axial direction displacement diagram, and b is synchronized shift fork axial velocity schematic diagram, and c is input Rotating speed schematic diagram；ssFor recognizing the synchronous point for obtaining；vbFor threshold speed；tvStart, for rotating speed, the moment for changing；vsFor tvIt First is less than threshold speed v afterwardsbShift fork axial velocity；tsFor synchronous initial time.
Fig. 2 be for detecting the sensor scheme of installation of synchronized shift fork displacement；
In figure is irised out part and is sensor.
Specific embodiment
Below embodiments of the invention are elaborated, the present embodiment is carried out under premised on technical solution of the present invention Implement, detailed embodiment and specific operating process is given, but protection scope of the present invention is not limited to following enforcements Example.
Embodiment 1
The present embodiment proposes a kind of discrimination method of synchronized synchronous point, and the method is according to synchronized shift fork speed and defeated Enter rotating speed to recognize synchronized synchronous point position.
, by taking double-clutch speed changer as an example, specific implementation step is as follows for the present embodiment：
1) after transmission control core sends gearshift synch command, start to detect synchronized shift fork displacement；
2) after transmission control core sends gearshift synch command, start to detect input shaft rotating speed；
3) synchronized shift fork axial velocity is calculated according to the displacement of synchronized shift fork, computational methods are difference method；
4) when the input shaft rotating speed for detecting changes, is recorded for t this momentv；
5) from tvStart, by step 3) in calculated synchronized shift fork axial velocity and threshold speed vbCompare, such as Fruit synchronized shift fork speed is more than threshold speed vb, then shift fork speed and the threshold speed of more next sampled point are continued；If Synchronized shift fork speed is less than threshold speed vb, then this shift fork speed is recorded for vs；
6) definition step 5) in shift fork speed v that obtainssThe corresponding moment is synchronization initial time ts；
7) synchronization initial time tsCorresponding synchronized shift fork displacement is synchronous point ss.
The incipient stage of the synchronized course of work, clutch collar drive alignment pin and synchronous ring to move axially together, Zhi Daotong Step ring is entered with the rubbing surface of gear to be joined and is contacted, and now generates friction between synchronous ring and the rubbing surface of gear to be joined Torque, the moment of friction cause input shaft rotating speed that significant change occurs.Now synchronized clutch collar does not stop axial movement, Synchronized clutch collar also needs to overcome the resistance of alignment pin, until synchronous ring blocks the axial movement of synchronized clutch collar.
Traditional synchronized synchronous point determination methods many with input shaft rotating speed change when synchronizer displacement as synchronization Point, but in synchronized real work, the moment corresponding to synchronous point is often late than the moment that input shaft rotating speed changes, this After being because the rubbing surface engaging friction in synchronous ring with gear to be joined, synchronized clutch collar still needs to overcome the resistance of alignment pin Hinder effect continue axial movement, until being blocked by the increment of synchronous ring, and real synchronous point exactly synchronized clutch collar with Step ring enters lock position, and the now displacement of synchronous engagement of loops set no longer changes, and its axial velocity is also reduced to zero.
Used in the present embodiment, the displacement of synchronized shift fork and axial velocity be used as reference, and does not use synchronized clutch collar position Move and axial velocity is because that synchronizer displacement sensor is normally mounted on shift fork, the displacement that therefore sensor is measured is tight It is synchronized shift fork displacement in lattice meaning.In whole synchronizing process, synchronized shift fork drives synchronized clutch collar axial direction Movement, both displacements and speed are the same, and the axial displacement of synchronized clutch collar can be equal to the axle of synchronized shift fork To displacement.
The schematic diagram for synchronous point discrimination method in embodiment shown in Fig. 1, the axial displacement including synchronized shift fork are bent Line, the axial velocity curve of synchronized shift fork and input shaft rotating speed curve.As shown in figure 1, initially becoming on input shaft rotating speed curve Moment corresponding to the rotating speed of change is tv, be now engraved in synchronized shift fork axial direction rate curve on corresponding shift fork axial velocity simultaneously Threshold speed v is not less thanb, and in tvA certain moment afterwards, synchronized shift fork axial velocity start less than threshold speed vb, this When synchronized shift fork speed be vs, its corresponding moment is synchronous start time, and the displacement of corresponding synchronized shift fork is synchronous Point.
Described threshold speed vb1mm/s is taken in the present embodiment, the numerical value is demarcated according to many experiments, because sensing There is certain error in device, therefore threshold speed v hereinbZero velocity in theory analysis is not conformed exactly to.
Synchronous point discrimination method in the present embodiment can avoid the shock problem that conventional synchronization point discrimination method causes, energy Position that synchronized clutch collar and synchronous ring enter locking is accurately found, and as synchronous point, it is to avoid synchronized clutch collar Impact with synchronous ring increment.

Claims (7)

1. a kind of double-clutch automatic gearbox synchronized synchronous point discrimination method, it is characterised in that by starting gearshift is synchronous When from real-time tracking input shaft rotating speed and synchronized shift fork axial velocity, and input shaft rotating speed changing value exceed threshold value when with The axial velocity of track synchronized shift fork, when first time is less than axial velocity threshold value, corresponding synchronized shift fork displacement is used as more Synchronous point after new.
2. synchronous point discrimination method according to claim 1, is characterized in that, the synchronized shift fork displacement is referred to：Synchronous Displacement of the device shift fork current location with respect to shift fork in neutral gear centre position.
3. synchronous point discrimination method according to claim 1, is characterized in that, described discrimination method specifically includes following step Suddenly：
1), after transmission control unit sends gearshift synch command, start to detect the displacement of synchronized shift fork and input shaft rotating speed；
2) the synchronized shift fork displacement by detecting, calculates the axial velocity for obtaining synchronized shift fork using difference method；
3) when detected input shaft rotating speed changes more than 50rad/s2When, record the moment t of this rotation speed changev；
4) from tvIn the moment, whether synchronized shift fork axial velocity is judged less than axial velocity threshold value, when shift fork axial velocity vs Axial velocity threshold value v is less than for the first timebWhen the corresponding moment be designated as synchronous start time ts, the tsSynchronized corresponding to moment Shift fork displacement ssAs the synchronous point after renewal.
4. synchronous point discrimination method according to claim 3, is characterized in that, described difference method is specifically referred to：With work as The difference of the synchronized shift fork displacement in front sampling time and previous sampling time synchronized shift fork displacement is divided by the sampling interval.
5. synchronous point discrimination method according to claim 1, is characterized in that, described axial velocity threshold value vbTake 1mm/s.
6. a kind of system for realizing any of the above-described claim methods described, it is characterised in that include：With transmission control unit Connected detection module and central processing module, wherein：Detection module receives the gearshift synchronization that transmission control unit sends Start after order, gather the displacement of synchronized shift fork and input shaft rotating speed and export to central processing module, central processing module enters Row axial velocity threshold decision simultaneously calculates current sync device shift fork displacement, exports to speed changer after the synchronous point after updating is determined Control unit.
7. system according to claim 6, is characterized in that, described detection module is specifically included：Synchronizer displacement is sensed Device, input shaft rotating speed sensor, wherein：Synchronizer displacement sensor is arranged at one end of synchronized shift fork and to transmission control Unit transmits synchronizer displacement information, and input shaft rotating speed sensor is arranged at input shaft and to transmission control unit transmission input Rotating speed information.
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CN107304842B (en) * 2016-04-25 2018-11-02 上海汽车集团股份有限公司 The method and device of fork controls
CN105840816B (en) * 2016-05-05 2018-05-22 中国第一汽车股份有限公司 A kind of double-clutch automatic gearbox of tape synchronizer is put into gear control method
CN108506477B (en) * 2018-04-08 2019-10-25 吉泰车辆技术（苏州）有限公司 Speed-changer synchronizer synchronous self-adapting control method and system
CN111102351B (en) * 2018-10-26 2021-04-16 上海汽车集团股份有限公司 Method and device for correcting thrust of synchronizer
CN110132405B (en) * 2019-05-29 2021-12-21 中国第一汽车股份有限公司 Gear off and on noise identification system and method
CN113915330A (en) * 2021-09-28 2022-01-11 常州华创航空科技有限公司 Gear shifting device and transmission case

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1082998A (en) * 1992-01-02 1994-03-02 易通公司 The contact point determinant and the decision method that are used for automatic clutch controller
US5337868A (en) * 1992-01-02 1994-08-16 Eaton Corporation Touch point identification for automatic clutch controller
US5993355A (en) * 1994-09-23 1999-11-30 Kongsberg Techmatic Uk Limited Control system for an automatically actuated clutch
CN1256216A (en) * 1998-11-12 2000-06-14 易通公司 Contact point identification of vehicle main clutch
CN1751189A (en) * 2003-02-19 2006-03-22 Zf腓德烈斯哈芬股份公司 Method for determining a point of application of the clutch for an automatic gearbox
CN103089987A (en) * 2013-01-18 2013-05-08 浙江吉利汽车研究院有限公司杭州分公司 Method for controlling predicted synchronization point of automatic transmission synchronizer
FR2979405B1 (en) * 2011-08-31 2013-08-30 Peugeot Citroen Automobiles Sa DETERMINING THE SYNCHRONIZATION POINTS OF A DOUBLE CLUTCH GEARBOX
CN103867708A (en) * 2012-12-11 2014-06-18 上海汽车集团股份有限公司 Automatic positioning method for shifting fork of synchronizer of electric drive speed changing box
CN104279309A (en) * 2013-07-01 2015-01-14 上海汽车集团股份有限公司 Method and device for controlling synchronizer in automatic mechanical gearbox

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502007006382D1 (en) * 2007-10-23 2011-03-10 Getrag Ford Transmissions Gmbh Method for achieving a neutral position of a shift fork in a manual transmission

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1082998A (en) * 1992-01-02 1994-03-02 易通公司 The contact point determinant and the decision method that are used for automatic clutch controller
US5337868A (en) * 1992-01-02 1994-08-16 Eaton Corporation Touch point identification for automatic clutch controller
US5993355A (en) * 1994-09-23 1999-11-30 Kongsberg Techmatic Uk Limited Control system for an automatically actuated clutch
CN1256216A (en) * 1998-11-12 2000-06-14 易通公司 Contact point identification of vehicle main clutch
CN1751189A (en) * 2003-02-19 2006-03-22 Zf腓德烈斯哈芬股份公司 Method for determining a point of application of the clutch for an automatic gearbox
FR2979405B1 (en) * 2011-08-31 2013-08-30 Peugeot Citroen Automobiles Sa DETERMINING THE SYNCHRONIZATION POINTS OF A DOUBLE CLUTCH GEARBOX
CN103867708A (en) * 2012-12-11 2014-06-18 上海汽车集团股份有限公司 Automatic positioning method for shifting fork of synchronizer of electric drive speed changing box
CN103089987A (en) * 2013-01-18 2013-05-08 浙江吉利汽车研究院有限公司杭州分公司 Method for controlling predicted synchronization point of automatic transmission synchronizer
CN104279309A (en) * 2013-07-01 2015-01-14 上海汽车集团股份有限公司 Method and device for controlling synchronizer in automatic mechanical gearbox

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