CN105626847A - Synchronizer control method and device - Google Patents
Synchronizer control method and device Download PDFInfo
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- CN105626847A CN105626847A CN201410712928.2A CN201410712928A CN105626847A CN 105626847 A CN105626847 A CN 105626847A CN 201410712928 A CN201410712928 A CN 201410712928A CN 105626847 A CN105626847 A CN 105626847A
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Abstract
The invention discloses a synchronizer control method and device. The synchronizer control method comprises the steps that a vehicle control signal is detected, and the control stage of a synchronizer is judged; the corresponding shifter adjustment amount is calculated according to the control stage of the synchronizer; the movement speed and amplitude of a shifter bar are adjusted according to the shifter adjustment amount; and the synchronizer is controlled by the shifter bar to move according to the adjusted movement speed and amplitude. By the adoption of the method and device, the movement smoothness of the synchronizer in the gear shifting process can be improved.
Description
Technical field
The present invention relates to field of automobile, particularly relate to a kind of lock unit control method and device.
Background technology
Lock unit control is controlling unit important in the gearshift control of automobile gearbox, is directed to shift process power interruption time, smooth gear shifting, the gearshift problem such as noise and lock unit abrasion. Automatically controlling of conventional synchronizer adopts open loop type Stress control or flow-control more. Although such control is simple, but cannot guarantee the ride comfort that lock unit is shifted gears. Especially under some operating mode, during such as acceleration change, or when ambient temperature is inconsistent etc., it may appear that lock unit excessive velocities produces to impact, or the problem that speed causes shift time length more slowly.
Summary of the invention
The problem that the embodiment of the present invention solves is how to improve the ride comfort that lock unit moves in shift process.
For solving the problems referred to above, the embodiment of the present invention provides a kind of lock unit control method, including: detection whole vehicle control signal, it is judged that the control stage residing for lock unit; In the control stage residing for described lock unit, calculate corresponding shift fork adjustment amount; Translational speed and the dynamics of shifting fork bar is adjusted according to described shift fork adjustment amount; According to the translational speed after adjusting and dynamics, adopt described shifting fork bar to control described lock unit and move.
Optionally, described whole vehicle control signal includes: lock unit position signalling, car load demand gear signal and car load actual-gear signal.
Optionally, described whole vehicle control signal also includes: change speed gear box fuel injection pressure signal.
Optionally, in the described control stage residing for described lock unit, calculate corresponding shift fork adjustment amount, including: detection accelerator pedal signal and TOT Transmission Oil Temperature signal; According to described accelerator pedal signal and described TOT Transmission Oil Temperature signal, and the control stage residing for described lock unit, calculate corresponding described shift fork adjustment amount.
Optionally, described shift fork adjustment amount includes demand speed and the demand pressure of shift fork actuator in corresponding gear box hydraulic control system.
Optionally, the described translational speed according to described demand speed and described demand pressure control shifting fork bar includes with dynamics: according to described demand pressure, adjust the pressure valve of shift fork actuator in gear box hydraulic system; According to described demand speed, adjust the flow valve of shift fork actuator in described gear box hydraulic system.
In order to solve above-mentioned technical problem, the embodiment of the invention also discloses a kind of lock unit and control device, including: detection unit, it is used for detecting whole vehicle control signal; Judging unit, for judging the control stage residing for lock unit; Computing unit, for the control stage residing for described lock unit, calculates corresponding shift fork adjustment amount; First adjustment unit, adjusts translational speed and the dynamics of shifting fork bar according to described shift fork adjustment amount; Second adjustment unit, according to the translational speed after adjusting and dynamics, adopts described shifting fork bar to control described lock unit and moves.
Optionally, described whole vehicle control signal includes: lock unit position signalling, car load demand gear signal and car load actual-gear signal.
Optionally, described whole vehicle control signal also includes: change speed gear box fuel injection pressure signal.
Optionally, described computing unit includes: detection sub-unit, is used for detecting accelerator pedal signal and TOT Transmission Oil Temperature signal; Computation subunit, is used for according to described accelerator pedal signal and described TOT Transmission Oil Temperature signal, and the control stage residing for described lock unit, calculates corresponding described shift fork adjustment amount.
Optionally, described shift fork adjustment amount includes demand speed and the demand pressure of shift fork actuator in corresponding gear box hydraulic control system.
Optionally, described first adjustment unit includes: first adjusts subelement, according to described demand pressure, adjusts the pressure valve of shift fork actuator in gear box hydraulic system; Second adjusts subelement, for according to described demand speed, adjusting the flow valve of shift fork actuator in described gear box hydraulic system.
Compared with prior art, the technical scheme of the embodiment of the present invention has the advantage that
The embodiment of the present invention adds feedback control mechanism in the process that lock unit controls, by monitoring whole vehicle control signal, judge current sync device location, thus can pass through to adjust in real time the movement of shifting fork bar in the difference control stage of lock unit, control lock unit and steadily quickly move, under the power demand premise meeting driver, optimize shift process power interruption time, reduce lock unit noise, reduce the abrasion of lock unit hardware, improve shift quality.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of lock unit control method in the embodiment of the present invention;
When Fig. 2 is that in the embodiment of the present invention, lock unit is switched to 1 grade by 2 grades, control the relation schematic diagram in stage and lock unit position;
Fig. 3 is the structural representation of the hydraulic control system of shift fork actuator in the embodiment of the present invention;
Fig. 4 is the structural representation that in the embodiment of the present invention, a kind of lock unit controls device.
Detailed description of the invention
Lock unit control is controlling unit important in the gearshift control of automobile gearbox, is directed to shift process power interruption time, smooth gear shifting, the gearshift problem such as noise and lock unit abrasion. Automatically controlling of conventional synchronizer adopts open loop type Stress control or flow-control more. Although such control is simple, but cannot guarantee the ride comfort that lock unit is shifted gears. Especially under some operating mode, during such as acceleration change, or when ambient temperature is inconsistent etc., it may appear that lock unit excessive velocities produces to impact, or the problem that speed causes shift time length more slowly.
The embodiment of the present invention adds feedback control mechanism in the process that lock unit controls, by monitoring whole vehicle control signal, judge current sync device location, thus can pass through to adjust in real time the movement of shifting fork bar in the difference control stage of lock unit, control lock unit and steadily quickly move, under the power demand premise meeting driver, optimize shift process power interruption time, reduce lock unit noise, reduce the abrasion of lock unit hardware, improve shift quality.
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with accompanying drawing, specific embodiments of the invention are described in detail.
Embodiments provide a kind of lock unit control method, with reference to Fig. 1, be described in detail below by way of concrete steps.
Step S101, detects whole vehicle control signal, it is judged that the control stage residing for lock unit.
The above-mentioned lock unit control stage refers to that lock unit is in the process performing conversion gear, by residing actual physical location, and the control stage that gear change direction determines. Specifically, the described control stage may include that lock unit pluck shelves, lock unit combine before idle stroke, lock unit sliding wear combine, lock unit combine after idle stroke, lock unit files and lock unit is in six control stages such as shelves.
In being embodied as, it is possible to gather described whole vehicle control signal by gear box control unit (TransmissionControlUnit, TCU), thus judging the control stage residing for lock unit.
In being embodied as, described whole vehicle control signal may include that lock unit position signalling, car load demand gear signal and car load actual-gear signal. The actual physical location residing for described lock unit can be obtained by described lock unit position signalling, and by relatively described car load demand gear signal and described car load actual-gear signal, it is possible to obtain the gear change direction of described lock unit. Therefore comprehensive described lock unit position signalling, car load demand gear signal and car load actual-gear signal, it can be determined that the control stage residing for lock unit.
In above-mentioned being embodied as, described whole vehicle control signal can also include: change speed gear box fuel injection pressure signal. By obtaining described change speed gear box fuel injection pressure signal, and in conjunction with the synchronous control phase residing for lock unit, it is possible to find whether the Synchronization Control of described lock unit exists fault.
Step S102, in the control stage residing for described lock unit, calculates corresponding shift fork adjustment amount.
In being embodied as, described shift fork adjustment amount includes demand speed and the demand pressure of shift fork actuator in corresponding gear box hydraulic control system. Described demand speed corresponds in gear box hydraulic control system, the controlled quentity controlled variable of the flow valve of shift fork actuator; Described demand pressure corresponds in gear box hydraulic control system, the controlled quentity controlled variable of the pressure valve of shift fork actuator.
As in figure 2 it is shown, the shift process to be switched to 1 grade by 2 grades illustrates the corresponding relation between described control stage and demand speed and demand pressure below.
(1) the t1-t2 period: when lock unit carries out gear switch, first can put 2 to neutral gear position from gear, namely enter lock unit and pluck the gear control stage. Owing to this stage is not related to collision and the moment of torsion transmission of hardware, therefore to reduce the gearshift break period, can be fast as far as possible be departed from by lock unit puts 2 at gear, all it is set to the maximum preset by the request speed of flow valve in shift fork actuator and the request pressure of pressure valve, carries out speed controlling;
(2) the t2-t3 period: after lock unit arrives neutral gear position, need to reduce lock unit translational speed, therefore now will implement to adjust to the request speed of flow valve in shift fork actuator and the request pressure of pressure valve according to lock unit physical location, it is set to the minima preset, passively controls;
(3) the t3-t4 period: lock unit process of 1 from neutral to sync bit is idle stroke before lock unit combines, need that lock unit is set to speed more slowly to synchronize to impact to avoid causing, therefore the request speed of flow valve in shift fork actuator and the request pressure of pressure valve are set to the smaller value big relative to described shift fork adjustment amount minima, carry out speed controlling;
(4) the t4-t5 period: lock unit is that lock unit sliding wear combines from sync bit 1 to the process of sync bit 2, in order to lock unit sliding wear in conjunction with time avoid causing synchronization to impact, it is necessary to less demand pressure is set in shift fork actuator. Specifically, it is possible to the request speed of flow valve is set to the normal operating value preset, and by functional relationship, the request pressure of pressure valve is set to the respective value relevant with lock unit position; When lock unit positional distance neutral gear position is less, before namely synchronization sliding wear combines and starts, demand pressure is set to the smaller value preset; And when lock unit positional distance neutral gear position is bigger, after namely synchronization sliding wear has combined, demand pressure is set to the higher value preset, and in process, pressure is stepped up, and carries out Stress control;
(5) the t5-t6 period: lock unit from sync bit 2 to the process putting 1 at gear be lock unit combine after idle stroke, now need faster speed to reduce shift time, but speed can not be caused lock unit too soon and put 1 rigid collision at gear. Specifically, can the demand pressure of pressure valve be set to less, and by functional relationship, the demand speed of flow valve is set to the respective value relevant to lock unit position, namely when lock unit positional distance neutral gear position is less, demand speed is set to comparatively fast, when lock unit distance neutral gear position is bigger, demand speed is set to relatively slow, carries out speed controlling;
(6) when lock unit arrives and puts 1 at gear, enter lock unit and file the control stage. In order to allow combined cover and can be at a fully engaged in conjunction with gear ring, realize compressing at gear by Stress control;
(7) when lock unit arrives after gear puts 1, and complete lock unit and file after the control stage, enter lock unit and control the stage at shelves. Now need stable lock unit position, according to lock unit real time position and the difference in shelves target location, implement to adjust with the request speed of flow valve to the request pressure of pressure valve, be set to the minima preset, passively control.
In being embodied as, described step S102 can also include: detection accelerator pedal signal and TOT Transmission Oil Temperature signal, and according to described accelerator pedal signal and described TOT Transmission Oil Temperature signal, and the control stage residing for described lock unit, calculate corresponding shift fork adjustment amount, namely calculate the described demand speed of correspondence and described demand pressure.
Detect described accelerator pedal signal and can obtain the acceleration change situation of vehicle, detect described TOT Transmission Oil Temperature signal and then can obtain the ambient temperature in transmission system. In the prior art, when acceleration change occurs, or when ambient temperature is inconsistent, all may affect the ride comfort of lock unit Synchronization Control. According to described accelerator pedal signal and described TOT Transmission Oil Temperature signal intensity situation, it is possible to arrange suitable adjusted value for described shift fork adjustment amount further, improve the ride comfort of gear shift operation. In a particular application, described adjusted value can by experiment, be configured according to experimental simulation result.
Step S103, adjusts translational speed and the dynamics of shifting fork bar according to described shift fork adjustment amount.
In being embodied as, described shift fork adjustment amount can include demand pressure and demand speed. Therefore, according to the described demand pressure calculated and demand speed, according to described demand pressure, correspondingly adjust the pressure valve of shift fork actuator in gear box hydraulic system; And according to described demand speed, adjust the flow valve of shift fork actuator in described gear box hydraulic system.
As shown in Figure 3, flow valve 31 is for regulating the translational speed of shifting fork bar 33 in hydraulic cylinder 32, and can feed back according to the position of shifting fork bar 33 and carry out closed loop adjustment, pressure valve 34 is for regulating and maintain the hydraulic pressure of whole oil circuit, can quickly ask by response pressure, according to described pressure request build-up pressure and remove pressure, oil pump 35 is used for providing working connection oil pressure.
In above-mentioned being embodied as, described demand volume and described demand pressure for the required output calculated, the characteristic of flow valve and pressure valve can be passed through, computing is carried out by calling default function or formula, described demand volume and described demand pressure are converted to the current signal of correspondence, control the flow valve in shift fork actuator and pressure valve respectively.
Step S104, according to the translational speed after adjusting and dynamics, adopts described shifting fork bar to control described lock unit and moves.
In the prior art, lock unit controls simply to be given synchronizer mechanisms control instruction by special controller, make lock unit perform corresponding gear shift operation, but be not arranged on the feedback control in lock unit control process, therefore have impact on the smooth shift of lock unit. And under specific operation, this impact can be even more serious. The embodiment of the present invention is by detecting the control stage residing for lock unit, calculate in current control stage, the suitable shift fork adjustment amount that shift fork executor needs, and make shifting fork bar move with dynamics control lock unit according to the translational speed after adjusting, it is ensured that the ride comfort that lock unit moves in shift process.
The embodiment of the invention also discloses a kind of lock unit and control device. As shown in Figure 4, described lock unit controls device 40 and may include that detection unit 41, is used for detecting whole vehicle control signal; Judging unit 42, for judging the control stage residing for lock unit; Computing unit 43, for the control stage residing for described lock unit, calculates corresponding shift fork adjustment amount; First adjustment unit 44, adjusts translational speed and the dynamics of shifting fork bar according to described shift fork adjustment amount; Second adjustment unit 45, according to the translational speed after adjusting and dynamics, adopts described shifting fork bar to control described lock unit and moves.
In being embodied as, described whole vehicle control signal may include that lock unit position signalling, car load demand gear signal and car load actual-gear signal.
In being embodied as, described whole vehicle control signal can also include: change speed gear box fuel injection pressure signal.
In being embodied as, described computing unit 43 may include that detection sub-unit, is used for detecting accelerator pedal signal and TOT Transmission Oil Temperature signal; Computation subunit, is used for according to described accelerator pedal signal and described TOT Transmission Oil Temperature signal, and the control stage residing for described lock unit, calculates corresponding described shift fork adjustment amount.
In being embodied as, described shift fork adjustment amount includes demand speed and the demand pressure of shift fork actuator in corresponding gear box hydraulic control system.
In being embodied as, described first adjustment unit 44 may include that the first adjustment subelement, according to described demand pressure, adjusts the pressure valve of shift fork actuator in gear box hydraulic system; Second adjusts subelement, for according to described demand speed, adjusting the flow valve of shift fork actuator in described gear box hydraulic system.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment can be by the hardware that program carrys out instruction relevant and completes, this program can be stored in computer-readable recording medium, and storage medium may include that ROM, RAM, disk or CD etc.
Although present disclosure is as above, but the present invention is not limited to this. Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (12)
1. a lock unit control method, it is characterised in that including:
Detection whole vehicle control signal, it is judged that the control stage residing for lock unit;
In the control stage residing for described lock unit, calculate corresponding shift fork adjustment amount;
Translational speed and the dynamics of shifting fork bar is adjusted according to described shift fork adjustment amount;
According to the translational speed after adjusting and dynamics, adopt described shifting fork bar to control described lock unit and move.
2. lock unit control method as claimed in claim 1, it is characterised in that described whole vehicle control signal includes: lock unit position signalling, car load demand gear signal and car load actual-gear signal.
3. lock unit control method as claimed in claim 2, it is characterised in that described whole vehicle control signal also includes: change speed gear box fuel injection pressure signal.
4. lock unit control method as claimed in claim 1, it is characterised in that in the described control stage residing for described lock unit, calculate corresponding shift fork adjustment amount, including:
Detection accelerator pedal signal and TOT Transmission Oil Temperature signal;
According to described accelerator pedal signal and described TOT Transmission Oil Temperature signal, and the control stage residing for described lock unit, calculate corresponding described shift fork adjustment amount.
5. the lock unit control method as described in claim 1 or 4, it is characterised in that described shift fork adjustment amount includes demand speed and the demand pressure of shift fork actuator in corresponding gear box hydraulic control system.
6. lock unit control method as claimed in claim 5, it is characterised in that the described translational speed according to described demand speed and described demand pressure control shifting fork bar includes with dynamics:
According to described demand pressure, adjust the pressure valve of shift fork actuator in gear box hydraulic system;
According to described demand speed, adjust the flow valve of shift fork actuator in described gear box hydraulic system.
7. a lock unit controls device, it is characterised in that including:
Detection unit, is used for detecting whole vehicle control signal;
Judging unit, for judging the control stage residing for lock unit;
Computing unit, for the control stage residing for described lock unit, calculates corresponding shift fork adjustment amount;
First adjustment unit, adjusts translational speed and the dynamics of shifting fork bar according to described shift fork adjustment amount;
Second adjustment unit, according to the translational speed after adjusting and dynamics, adopts described shifting fork bar to control described lock unit and moves.
8. lock unit as claimed in claim 7 controls device, it is characterised in that described whole vehicle control signal includes: lock unit position signalling, car load demand gear signal and car load actual-gear signal.
9. lock unit as claimed in claim 8 controls device, it is characterised in that described whole vehicle control signal also includes: change speed gear box fuel injection pressure signal.
10. lock unit as claimed in claim 7 controls device, it is characterised in that described computing unit includes:
Detection sub-unit, is used for detecting accelerator pedal signal and TOT Transmission Oil Temperature signal;
Computation subunit, is used for according to described accelerator pedal signal and described TOT Transmission Oil Temperature signal, and the control stage residing for described lock unit, calculates corresponding described shift fork adjustment amount.
11. the lock unit as described in claim 7 or 10 controls device, it is characterised in that described shift fork adjustment amount includes demand speed and the demand pressure of shift fork actuator in corresponding gear box hydraulic control system.
12. lock unit as claimed in claim 11 controls device, it is characterised in that described first adjustment unit includes:
First adjusts subelement, according to described demand pressure, adjusts the pressure valve of shift fork actuator in gear box hydraulic system;
Second adjusts subelement, for according to described demand speed, adjusting the flow valve of shift fork actuator in described gear box hydraulic system.
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| CN108278363A (en) * | 2018-01-19 | 2018-07-13 | 吉林大学 | A kind of pressure compensated synchronizer rotating speed synchronizing process control method of band |
| CN108506476A (en) * | 2018-04-03 | 2018-09-07 | 吉林大学 | A kind of synchronizer based on unilateral control pressurer system is into gear course control method for use |
| CN108506477A (en) * | 2018-04-08 | 2018-09-07 | 吉泰车辆技术（苏州）有限公司 | Speed-changer synchronizer synchronous self-adapting control method and system |
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| CN108730501A (en) * | 2017-04-25 | 2018-11-02 | 迪尔公司 | Speed changer reverser is opened with the double break for disconnecting synchronizer |
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| CN108506476A (en) * | 2018-04-03 | 2018-09-07 | 吉林大学 | A kind of synchronizer based on unilateral control pressurer system is into gear course control method for use |
| CN108506477A (en) * | 2018-04-08 | 2018-09-07 | 吉泰车辆技术（苏州）有限公司 | Speed-changer synchronizer synchronous self-adapting control method and system |
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| CN110906000A (en) * | 2018-09-17 | 2020-03-24 | 纬湃科技投资(中国)有限公司 | Method for adjusting the fork synchronization position of a transmission and vehicle |
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| CN113614418A (en) * | 2019-03-22 | 2021-11-05 | 株式会社爱信 | Vehicle drive device and control device |
| CN109882589A (en) * | 2019-03-28 | 2019-06-14 | 世倍特科技投资(中国)有限公司 | For adjusting the method and vehicle of the pressure of putting into gear of double-clutch speed changer |
| CN109882589B (en) * | 2019-03-28 | 2020-11-13 | 纬湃科技投资(中国)有限公司 | Method and vehicle for adjusting the engagement pressure of a dual clutch transmission |
| CN110925420A (en) * | 2019-12-10 | 2020-03-27 | 义乌吉利自动变速器有限公司 | Transmission gear selecting and shifting control method and system and vehicle |
| CN110925420B (en) * | 2019-12-10 | 2021-03-16 | 义乌吉利自动变速器有限公司 | Transmission gear selecting and shifting control method and system and vehicle |
| CN110939731A (en) * | 2019-12-30 | 2020-03-31 | 潍柴动力股份有限公司 | Method and device for adjusting gear engaging distance |
| CN111237445A (en) * | 2020-01-10 | 2020-06-05 | 一汽解放汽车有限公司 | Synchronizer gear shifting pneumatic control method based on PWM valve |
| CN111237445B (en) * | 2020-01-10 | 2021-12-07 | 一汽解放汽车有限公司 | Synchronizer gear shifting pneumatic control method based on PWM valve |
| CN111306293B (en) * | 2020-02-27 | 2021-08-10 | 一汽解放汽车有限公司 | Synchronizer gear shifting pneumatic control method based on switch valve |
| CN111306293A (en) * | 2020-02-27 | 2020-06-19 | 一汽解放汽车有限公司 | Synchronizer gear shifting pneumatic control method based on switch valve |
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