CN103727226B - Dual-clutch transmission big foot pattern starting controlling method - Google Patents
Dual-clutch transmission big foot pattern starting controlling method Download PDFInfo
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- CN103727226B CN103727226B CN201410036452.5A CN201410036452A CN103727226B CN 103727226 B CN103727226 B CN 103727226B CN 201410036452 A CN201410036452 A CN 201410036452A CN 103727226 B CN103727226 B CN 103727226B
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H59/141—Inputs being a function of torque or torque demand of rate of change of torque or torque demand
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/46—Inputs being a function of speed dependent on a comparison between speeds
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
- F16H59/54—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the brakes, e.g. parking brakes
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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
- F16H61/0293—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 purely mechanical
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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
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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
- F16H61/68—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 specially adapted for stepped gearings
- F16H61/684—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 specially adapted for stepped gearings without interruption of drive
- F16H61/688—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 specially adapted for stepped gearings without interruption of drive with two inputs, e.g. selection of one of two torque-flow paths by clutches
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H2059/147—Transmission input torque, e.g. measured or estimated engine torque
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
- F16H2059/183—Rate of change of accelerator position, i.e. pedal or throttle change gradient
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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
- F16H2061/0474—Smoothing ratio shift by smoothing engagement or release of positive clutches; Methods or means for shock free engagement of dog clutches
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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
- F16H2312/00—Driving activities
- F16H2312/20—Start-up or shut-down
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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
- F16H2710/00—Control devices for speed-change mechanisms, the speed change control is dependent on function parameters of the gearing
- F16H2710/04—Control dependent on speed
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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
- F16H2710/00—Control devices for speed-change mechanisms, the speed change control is dependent on function parameters of the gearing
- F16H2710/24—Control dependent on torque
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of dual-clutch transmission big foot pattern starting controlling method, it comprises: obtain gas pedal aperture, brake petal aperture and the speed of a motor vehicle; According to gas pedal aperture, brake petal aperture and the speed of a motor vehicle, judge whether to enter big foot pattern initiation control mode; If so, then current gear is obtained; When described current gear is 1 gear, moment of torsion control is carried out to first clutch, and make the difference of the rotating speed of motor and the rotating speed of target of setting meet the margin of error of setting; When described current gear be 2 gears or R gear time, moment of torsion control is carried out to second clutch, and makes the difference of the rotating speed of motor and described rotating speed of target meet described margin of error.Dual-clutch transmission big foot pattern starting controlling method of the present invention, by controlling the moment of torsion of first clutch or second clutch transmission, when making to there is certain brake petal aperture and gas pedal aperture at the same time, car load can be started to walk by safety and steady rapidly.
Description
Technical field
The present invention relates to automotive transmission technical field, particularly relate to a kind of dual-clutch transmission big foot pattern starting controlling method.
Background technique
Typical wet-type double-clutch automatic speed-change case has inside and outside two clutches.Outer clutch is connected with outer input shaft, controls odd number gear, and outer clutch is also called first clutch; Internal clutch is connected with interior input shaft, and control even number gear and the gear that reverses gear (namely R keeps off gear), internal clutch is also called second clutch.Utilize electrichydraulic control, drive solenoid valve to realize the alternation of gear change and clutch, final realization gearshift automation.
The function that current wet-type double-clutch automatic speed-change case does not have the starting of big foot pattern to control, and in big foot pattern starting-up process, there is the situation of brake petal aperture (i.e. brake pressure) and gas pedal aperture sometimes in car load simultaneously, occur that the reason of above-mentioned situation mainly contains two kinds: the first, due to driver's misoperation, has stepped on brake petal and gas pedal starting simultaneously; Its two due to driver's operation very fast, loose brake petal and accelerator pedal is completed in the extremely short time, or accelerator releasing pedal and step on brake petal, cause when accelerator pedal, when still there is certain brake pressure or step on brake petal, still there is certain gas pedal aperture.Owing to still there is no a kind of wet-type double-clutch automatic speed-change case big foot pattern starting controlling functions in prior art, so probably cause the phenomenon occurring car load starting irregularity in big foot pattern starting-up process, thus reduce the Security of car load and the travelling comfort of driving.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provide a kind of dual-clutch transmission big foot pattern starting controlling method.
For achieving the above object, technological scheme of the present invention is:
A kind of dual-clutch transmission big foot pattern starting controlling method, it comprises:
Obtain gas pedal aperture, brake petal aperture and the speed of a motor vehicle;
According to described gas pedal aperture, brake petal aperture and the speed of a motor vehicle, judge whether to enter big foot pattern initiation control mode;
If so, then current gear is obtained;
When described current gear is 1 gear, moment of torsion control is carried out to first clutch, and make the difference of the rotating speed of motor and the rotating speed of target of setting meet the margin of error of setting;
When described current gear be 2 gears or R gear time, moment of torsion control is carried out to second clutch, and makes the difference of the rotating speed of target of the rotating speed of motor and described setting meet the margin of error of described setting.
Preferably, described according to described gas pedal aperture, brake petal aperture and the speed of a motor vehicle, judge whether that entering big foot pattern initiation control mode comprises:
Judge whether described gas pedal aperture is greater than the gas pedal aperture threshold value of setting, and whether described brake petal aperture is greater than the brake petal aperture threshold value of setting, and the described speed of a motor vehicle is whether in the vehicle speed range of setting;
If so, then determine to enter big foot pattern initiation control mode.
Preferably, described gas pedal aperture threshold value is 5%, and described brake petal aperture threshold value is 5%, and described vehicle speed range is for being greater than-1km/h and being less than 1km/h.
Preferably, described moment of torsion control is carried out to first clutch, and the margin of error making the difference of the rotating speed of motor and the rotating speed of target of setting meet setting comprises:
Step a1: the rotating speed obtaining motor, and the rotating speed of target of acquisition motor of tabling look-up according to described gas pedal aperture; Calculate the rotating speed of described motor and the difference of rotating speed of target, obtain the speed discrepancy of motor;
Step a2: table look-up according to the speed discrepancy of described motor and obtain scaling factor and integral coefficient;
Proportion adjustment is carried out to the speed discrepancy of described motor, and using the output quantity of described proportion adjustment as the first output value;
Integral adjustment is carried out to the speed discrepancy of described motor, and using the output quantity of described integral adjustment as the second output value;
Obtain the clean moment of torsion of motor, and using the absolute value of the clean moment of torsion of described motor as the 3rd output value;
Calculate described first output value, the second output value and the 3rd output value and, obtain the expectation moment of torsion of described first clutch;
Step a3: first clutch according to the expectation torque drive of described first clutch;
Step a4: circulation performs step a1 ~ step a3, until the speed discrepancy of described motor meets described margin of error.
Preferably, described step a2 also comprises: adjust the clean moment of torsion of described motor, and the described clean moment of torsion to described motor carries out adjustment and comprises:
When entering described big foot pattern initiation control mode, adjust the clean moment of torsion reference value that described clean moment of torsion is setting;
After the time period of setting, judge whether still to be in big foot pattern initiation control mode every the time lag of setting, if, then make current clean moment of torsion reference value from the first side-play amount subtracting a setting, obtain the clean moment of torsion reference value after upgrading, and the clean moment of torsion of described motor is adjusted to the clean moment of torsion reference value after described renewal; Until when the clean moment of torsion reference value after described renewal is less than or equal to 0, stop adjusting the clean moment of torsion of described motor;
If not, then make current clean moment of torsion reference value from the second side-play amount increasing a setting, obtain the clean moment of torsion reference value after upgrading, and the clean moment of torsion of described motor is adjusted to the clean moment of torsion reference value after described renewal; Until when the clean moment of torsion reference value after described renewal is greater than the Engine torque disregarding ectocine, stop adjusting the clean moment of torsion of described motor.
Preferably, the described clean moment of torsion to described motor adjusts and also comprises:
In the described time period after entering described big foot pattern initiation control mode, judge whether still to be in big foot pattern initiation control mode every the time lag of setting, if not, then make current clean moment of torsion reference value from increasing described second side-play amount, obtain the clean moment of torsion reference value after upgrading, and the clean moment of torsion of described motor is adjusted to the clean moment of torsion reference value after described renewal; Until the clean moment of torsion reference value after described renewal be greater than described in when disregarding the Engine torque of ectocine, stop adjusting the clean moment of torsion of described motor.
Preferably, described moment of torsion control is carried out to second clutch, and the margin of error making the difference of the rotating speed of motor and the rotating speed of target of setting meet setting comprises:
Step b1: the rotating speed obtaining motor, and the rotating speed of target of acquisition motor of tabling look-up according to described gas pedal aperture; Calculate the rotating speed of described motor and the difference of rotating speed of target, obtain the speed discrepancy of motor;
Step b2: table look-up according to the speed discrepancy of described motor and obtain scaling factor and integral coefficient;
Proportion adjustment is carried out to the speed discrepancy of described motor, and using the output quantity of described proportion adjustment as the first output value;
Integral adjustment is carried out to the speed discrepancy of described motor, and using the output quantity of described integral adjustment as the second output value;
Obtain the clean moment of torsion of motor, and using the clean moment of torsion of described motor as the 3rd output value;
Calculate described first output value, the second output value and the 3rd output value and, obtain the expectation moment of torsion of described second clutch;
Step b3: second clutch according to the expectation torque drive of described second clutch;
Step b4: circulation performs step b1 ~ step b3, until the speed discrepancy of described motor meets described margin of error.
Preferably, described step b2 also comprises: adjust the clean moment of torsion of described motor, and the described clean moment of torsion to described motor carries out adjustment and comprises:
When entering described big foot pattern initiation control mode, adjust the clean moment of torsion reference value that described clean moment of torsion is setting;
After the time period of setting, judge whether still to be in big foot pattern initiation control mode every the time lag of setting, if, then make current clean moment of torsion reference value from the first side-play amount subtracting a setting, obtain the clean moment of torsion reference value after upgrading, and the clean moment of torsion of described motor is adjusted to the clean moment of torsion reference value after described renewal; Until when the clean moment of torsion reference value after described renewal is less than or equal to 0, stop adjusting the clean moment of torsion of described motor;
If not, then make current clean moment of torsion reference value from the second side-play amount increasing a setting, obtain the clean moment of torsion reference value after upgrading, and the clean moment of torsion of described motor is adjusted to the clean moment of torsion reference value after described renewal; Until when the clean moment of torsion reference value after described renewal is greater than the Engine torque disregarding ectocine, stop adjusting the clean moment of torsion of described motor.
Preferably, the described clean moment of torsion to described motor adjusts and also comprises:
In the described time period after entering described big foot pattern initiation control mode, judge whether still to be in big foot pattern initiation control mode every the time lag of setting, if not, then make current clean moment of torsion reference value from increasing described second side-play amount, obtain the clean moment of torsion reference value after upgrading, and the clean moment of torsion of described motor is adjusted to the clean moment of torsion reference value after described renewal; Until the clean moment of torsion reference value after described renewal be greater than described in when disregarding the Engine torque of ectocine, stop adjusting the clean moment of torsion of described motor.
Preferably, the clean moment of torsion reference value of described setting is 50nm; The time threshold of described setting is 3s; The time lag of described setting is 10ms; First side-play amount of described setting is 0.3nm; Second side-play amount of described setting is 2nm.
Beneficial effect of the present invention is, dual-clutch transmission big foot pattern starting controlling method of the present invention, by controlling the moment of torsion of first clutch or second clutch transmission, when making to there is certain brake petal aperture and gas pedal aperture at the same time, car load can be started to walk by safety and steady rapidly.
Accompanying drawing explanation
Fig. 1 shows the flow chart of embodiment of the present invention dual-clutch transmission big foot pattern starting controlling method;
Fig. 2 shows the schematic diagram in the embodiment of the present invention, first clutch being carried out to moment of torsion control;
Fig. 3 shows the schematic diagram in the embodiment of the present invention, second clutch being carried out to moment of torsion control;
Fig. 4 shows in the embodiment of the present invention the flow chart that the clean moment of torsion of described motor adjusts.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Dual-clutch transmission big foot pattern starting controlling method of the present invention, by controlling the moment of torsion of first clutch or second clutch transmission, when making to there is certain brake petal aperture and gas pedal aperture at the same time, car load can be started to walk by safety and steady rapidly.
As shown in Figure 1, be the flow chart of embodiment of the present invention dual-clutch transmission big foot pattern starting controlling method, described dual-clutch transmission big foot pattern starting controlling method, comprises the following steps:
Step 101: obtain gas pedal aperture, brake petal aperture and the speed of a motor vehicle.
Particularly, described gas pedal aperture and brake petal aperture all obtain by position transducer, and the speed of a motor vehicle of vehicle obtains by vehicle speed sensor.
Step 102: according to described gas pedal aperture, brake petal aperture and the speed of a motor vehicle, judges whether to enter big foot pattern initiation control mode.
Particularly, describedly judge whether that the method entering big foot pattern initiation control mode is: judge whether described gas pedal aperture is greater than the gas pedal aperture threshold value of setting, whether described brake petal aperture is greater than the brake petal aperture threshold value of setting, and whether the described speed of a motor vehicle is in the vehicle speed range of setting; If so, then determine to enter big foot pattern initiation control mode.Especially, described gas pedal aperture threshold value is preferably 5%, and described brake petal aperture threshold value is preferably 5%, and described vehicle speed range is (-1km/h for being greater than-1km/h(i.e. vehicle speed range, 1km/h), the speed of a motor vehicle is less than the speed that zero represents vehicle backing here) and be less than 1km/h.
Method in described step 102, monitoring car load is utilized not to be whether whether starting mode, brake petal aperture and gas pedal aperture are all greater than corresponding threshold value as the trigger condition entering big foot pattern initiation control mode, there are data be convenient to gather, workable advantage.
Step 103: if then obtain current gear.
Particularly, for automatic catch automobile, its shifting state can read from gearbox control, and the gear read means that vehicle is started to walk with this gear.
Step 104: when described current gear is 1 gear, moment of torsion control is carried out to first clutch, and make the difference of the rotating speed of motor and the rotating speed of target of setting meet the margin of error of setting.
Particularly, because 1 gear belongs to odd number gear, the first clutch in corresponding double clutch, therefore system needs to carry out moment of torsion control to first clutch, and concrete controlling method will be described in detail by composition graphs 2 hereinafter.
Step 105: when described current gear be 2 gears or R gear time, moment of torsion control is carried out to second clutch, and makes the difference of the rotating speed of target of the rotating speed of motor and described setting meet the margin of error of described setting.
Particularly, because 2 gears and R gear all belong to even number gear, the second clutch in corresponding double clutch, therefore system needs to carry out moment of torsion control to second clutch, and concrete controlling method will be described by composition graphs 3 hereinafter.
In addition, the method in described step 104 and step 105 is 1 gear starting or the starting of 2/R gear by detecting, and the moment of torsion that first clutch is carried out in judgement controls or the moment of torsion of second clutch controls, and has algorithm realization simple, is convenient to the advantage applied.
As shown in Figure 2, be the schematic diagram in the embodiment of the present invention, first clutch being carried out to moment of torsion control, described moment of torsion control carried out to first clutch, and make the difference of the rotating speed of motor and the rotating speed of target of setting meet the margin of error of setting, comprise the following steps:
Step a1: the rotating speed obtaining motor, and the rotating speed of target of acquisition motor of tabling look-up according to described gas pedal aperture; Calculate the rotating speed of described motor and the difference of rotating speed of target, obtain the speed discrepancy of motor.
Step a2: table look-up according to the speed discrepancy of described motor and obtain scaling factor and integral coefficient;
Proportion adjustment is carried out to the speed discrepancy of described motor, and using the output quantity of described proportion adjustment as the first output value T1;
Integral adjustment is carried out to the speed discrepancy of described motor, and using the output quantity of described integral adjustment as the second output value T2;
Obtain the clean moment of torsion of motor, and using the absolute value of the clean moment of torsion of described motor as the 3rd output value T3;
Calculate described first output value T1, the second output value T2 and the 3rd output value T3's and, obtain the expectation moment of torsion of described first clutch.
Particularly, the first, step a1 and a2 in the rotating speed of target of motor, scaling factor and integral coefficient by acquisition of tabling look-up, here, the table of corresponding these three different parameters, all known by those skilled in the art, belongs to known technology, repeats no more in this article.
The second, the output quantity of described proportion adjustment equals the product of the speed discrepancy of described scaling factor and motor, using the output quantity of proportion adjustment that obtains as the first output value T1;
3rd, according to
carry out integral adjustment to the speed discrepancy of described motor, wherein I represents the output quantity of integral adjustment, also as the second output value T2; I represents that initial is the initial value of integral adjustment by the integral coefficient obtained of tabling look-up, and the calculation method of this initial value is the result deducting the clean moment of torsion of motor after the current torque of first clutch deducts described first output value T1 again.
Step a3: first clutch according to the expectation torque drive of described first clutch.
Step a4: circulation performs step a1 ~ step a3, until the speed discrepancy of described motor meets described margin of error.
The moment of torsion of the first clutch mentioned in the present embodiment controls, not only comprise opened loop control but also comprise closed loop control, wherein opened loop control is the clean moment of torsion based on motor, closed loop control controls (namely aforementioned proportion controls and integral control) based on PI, make clutch driven disc rotating speed can as early as possible with the synchronization of motor, avoid clutch sliding wear rate high, car load power character be poor, the risk of clutch overheat; In addition, above-mentioned closed loop control algorithm uses PI control algorithm, has algorithm realization easy, applying flexible and the high advantage of control accuracy.
Correspondingly, method of the present invention also comprises carries out moment of torsion control to second clutch, as shown in Figure 3, it is the schematic diagram in the embodiment of the present invention, second clutch being carried out to moment of torsion control, because the method for second clutch being carried out to moment of torsion control is to above-mentioned to carry out the method for moment of torsion control to first clutch very similar, the just difference of control object, therefore only composition graphs 3 carries out brief description below.
Described moment of torsion control is carried out to second clutch, and the margin of error making the difference of the rotating speed of motor and the rotating speed of target of setting meet setting comprises the following steps:
Step b1: the rotating speed obtaining motor, and the rotating speed of target of acquisition motor of tabling look-up according to described gas pedal aperture; Calculate the rotating speed of described motor and the difference of rotating speed of target, obtain the speed discrepancy of motor;
Step b2: table look-up according to the speed discrepancy of described motor and obtain scaling factor and integral coefficient;
Proportion adjustment is carried out to the speed discrepancy of described motor, and using the output quantity of described proportion adjustment as the first output value T1;
Integral adjustment is carried out to the speed discrepancy of described motor, and using the output quantity of described integral adjustment as the second output value T2;
Obtain the clean moment of torsion of motor, and using the absolute value of the clean moment of torsion of described motor as the 3rd output value T3;
Calculate described first output value T1, the second output value T2 and the 3rd output value T3's and, obtain the expectation moment of torsion of described second clutch;
Step b3: second clutch according to the expectation torque drive of described second clutch;
Step b4: circulation performs step b1 ~ step b3, until the speed discrepancy of described motor meets described margin of error.
In the above-mentioned torque control method to clutch (first clutch or second clutch), usually read the clean moment of torsion of this motor from engine controller in prior art, and the clean moment of torsion of this motor is only determined by gas pedal aperture, for in this respect, present invention also offers for big foot pattern starting, to the method that the clean moment of torsion of described motor adjusts, by this adjusting method car load can be made to travel safer smooth-going.
As shown in Figure 4, be to the flow chart that the clean moment of torsion of described motor adjusts in the embodiment of the present invention, the described clean moment of torsion to described motor carries out adjustment and comprises the following steps:
Step 401: when entering described big foot pattern initiation control mode, adjusts the clean moment of torsion reference value that described clean moment of torsion is setting.Here, the clean moment of torsion reference value of described setting is preferably 50nm.
Step 402: after the time period of setting, judged whether still to be in big foot pattern initiation control mode every the time lag of setting;
Step 403: if then make current clean moment of torsion reference value from the first side-play amount subtracting a setting, obtain the clean moment of torsion reference value after upgrading, and the clean moment of torsion of described motor is adjusted to the clean moment of torsion reference value after described renewal; Until when the clean moment of torsion reference value after described renewal is less than or equal to 0, stop adjusting the clean moment of torsion of described motor.
Particularly, the time period of described setting is preferably 3s, after the time period, judge currently whether be still in big foot pattern initiation control mode every the time lag (be preferably 10ms) of setting, and once judge currently still to be in big foot pattern initiation control mode (method of judgement refers to the method content in step 102), namely current brake petal aperture and gas pedal aperture have exceeded corresponding threshold value all, show that Current vehicle is in more dangerous situation, need the clean moment of torsion suitably reducing motor, thus suitably can reduce the expectation moment of torsion of clutch, and then suitably can reduce the rotating speed of motor, reduce vehicle in starting-up process, occur dangerous possibility.
In addition, the clean moment of torsion of motor reduces gradually, the present invention is by this decrease, namely the first side-play amount is preferably set to 0.3nm, the rotating speed can deriving motor also reduces gradually, thus achieves the Security that can either ensure in Vehicle Starting Process, also can ensure the smoothness of vehicle operating, stationarity, improves the travelling comfort of driving.Here, when the clean moment of torsion that it should be noted that when motor is reduced to gradually and is less than or equal to 0, stop adjusting the clean moment of torsion of motor, the clean moment of torsion as the motor of described 3rd output value T3 is still to read from engine controller and gets.
Step 404: if not, then make current clean moment of torsion reference value from the second side-play amount increasing a setting, obtain the clean moment of torsion reference value after upgrading, and the clean moment of torsion of described motor is adjusted to the clean moment of torsion reference value after described renewal; Until when the clean moment of torsion reference value after described renewal is greater than the Engine torque disregarding ectocine, stop adjusting the clean moment of torsion of described motor.
Particularly, if after the time period of setting, judge currently whether be still in big foot pattern initiation control mode every the time lag (be preferably 10ms) of setting, and once judge currently to have exited big foot pattern initiation control mode, show that Current vehicle is in safer situation, need the clean moment of torsion of suitable greater engine, thus suitably can strengthen the expectation moment of torsion of clutch, and then can the rotating speed of suitable motor, the basis ensureing the Security of vehicle in starting-up process ensure that certain output power.
In addition, the clean moment of torsion of motor increases gradually, the present invention is by this increasing amount, namely the second side-play amount is preferably set to 2nm, the rotating speed can deriving motor also increases gradually, thus achieves the Security that can either ensure in Vehicle Starting Process, also can ensure the smoothness of vehicle operating, stationarity, improves the travelling comfort of driving.Here, it should be noted that, when the clean moment of torsion of motor is increased to the moment of torsion of the motor disregarding ectocine gradually, stop adjusting the clean moment of torsion of motor, the clean moment of torsion as the motor of described 3rd output value T3 is still and gets from engine controller reading.In addition, described in disregard the motor of ectocine moment of torsion also read from engine controller, this partial content belongs to well-known to those skilled in the art, does not repeat them here.
Step 405: in the described time period (being preferably 3s) after entering described big foot pattern initiation control mode, judged whether still to be in big foot pattern initiation control mode every the time lag (being preferably 10ms) of setting.
Step 406: if not, then making current clean moment of torsion reference value from increasing described second side-play amount, obtaining the clean moment of torsion reference value after upgrading, and the clean moment of torsion of described motor is adjusted to the clean moment of torsion reference value after described renewal; Until the clean moment of torsion reference value after described renewal be greater than described in when disregarding the Engine torque of ectocine, stop adjusting the clean moment of torsion of described motor.
Particularly, in 3s after entering big foot pattern initiation control mode, judge currently whether be still in big foot pattern initiation control mode every the time lag (be preferably 10ms) of setting, and once judge currently to have exited big foot pattern initiation control mode, show that Current vehicle is in safer situation, need the clean moment of torsion of suitable greater engine, thus suitably can strengthen the expectation moment of torsion of clutch, and then can the rotating speed of suitable motor, the basis ensureing the Security of vehicle in starting-up process ensure that certain output power.
In addition, the clean moment of torsion of motor increases gradually, the present invention is by this increasing amount, namely the second side-play amount is preferably set to 2nm, the rotating speed can deriving motor also increases gradually, thus achieves the Security that can either ensure in Vehicle Starting Process, also can ensure the smoothness of vehicle operating, stationarity, improves the travelling comfort of driving.Here, it should be noted that, when the clean moment of torsion of motor is increased to the moment of torsion of the motor disregarding ectocine gradually, stop adjusting the clean moment of torsion of motor, the clean moment of torsion as the motor of described 3rd output value T3 is still and gets from engine controller reading.
To sum up, adopt the method for the clean moment of torsion of the adjustment motor described in the embodiment of the present invention, the clean moment of torsion of motor is not exclusively determined by gas pedal aperture, but these three conditions of synthetical restraint pedal aperture, gas pedal aperture and the speed of a motor vehicle, judge whether to need the clean moment of torsion to motor to adjust, and adjustment mode concrete when determining to adjust; In addition, level and smooth adjustment is belonged to the adjustment mode of the clean moment of torsion of motor, namely make to increase gradually or reduce gradually, while ensure that drive safety, improve the stationarity of traveling, add the travelling comfort of driving.
In addition, using above three conditions as the Rule of judgment whether adjusted the clean moment of torsion of motor, there is application strong, be easy to the advantage realized.
Structure of the present invention, feature and action effect is described in detail above according to graphic shown embodiment; the foregoing is only preferred embodiment of the present invention; but the present invention does not limit practical range with shown in drawing; every change done according to conception of the present invention; or be revised as the Equivalent embodiments of equivalent variations; do not exceed yet specification with diagram contain spiritual time, all should in protection scope of the present invention.
Claims (9)
1. a dual-clutch transmission big foot pattern starting controlling method, is characterized in that, comprising:
Obtain gas pedal aperture, brake petal aperture and the speed of a motor vehicle;
Judge whether described gas pedal aperture is greater than the gas pedal aperture threshold value of setting, and whether described brake petal aperture is greater than the brake petal aperture threshold value of setting, and the described speed of a motor vehicle is whether in the vehicle speed range of setting;
If so, then determine to enter big foot pattern initiation control mode;
Obtain current gear;
When described current gear is 1 gear, moment of torsion control is carried out to first clutch, and make the difference of the rotating speed of motor and the rotating speed of target of setting meet the margin of error of setting;
When described current gear be 2 gears or R gear time, moment of torsion control is carried out to second clutch, and makes the difference of the rotating speed of target of the rotating speed of motor and described setting meet the margin of error of described setting.
2. method according to claim 1, is characterized in that, described gas pedal aperture threshold value is 5%, and described brake petal aperture threshold value is 5%, and described vehicle speed range is for being greater than-1km/h and being less than 1km/h.
3. method according to claim 1, is characterized in that, describedly carries out moment of torsion control to first clutch, and the margin of error making the difference of the rotating speed of motor and the rotating speed of target of setting meet setting comprises:
Step a1: the rotating speed obtaining motor, and the rotating speed of target of acquisition motor of tabling look-up according to described gas pedal aperture; Calculate the rotating speed of described motor and the difference of rotating speed of target, obtain the speed discrepancy of motor;
Step a2: table look-up according to the speed discrepancy of described motor and obtain scaling factor and integral coefficient;
Proportion adjustment is carried out to the speed discrepancy of described motor, and using the output quantity of described proportion adjustment as the first output value;
Integral adjustment is carried out to the speed discrepancy of described motor, and using the output quantity of described integral adjustment as the second output value;
Obtain the clean moment of torsion of motor, and using the absolute value of the clean moment of torsion of described motor as the 3rd output value;
Calculate described first output value, the second output value and the 3rd output value and, obtain the expectation moment of torsion of described first clutch;
Step a3: first clutch according to the expectation torque drive of described first clutch;
Step a4: circulation performs step a1 ~ step a3, until the speed discrepancy of described motor meets described margin of error.
4. method according to claim 3, is characterized in that, described step a2 also comprises: adjust the clean moment of torsion of described motor, and the described clean moment of torsion to described motor carries out adjustment and comprises:
When entering described big foot pattern initiation control mode, adjust the clean moment of torsion reference value that described clean moment of torsion is setting;
After the time period of setting, judge whether still to be in big foot pattern initiation control mode every the time lag of setting, if, then make current clean moment of torsion reference value from the first side-play amount subtracting a setting, obtain the clean moment of torsion reference value after upgrading, and the clean moment of torsion of described motor is adjusted to the clean moment of torsion reference value after described renewal; Until when the clean moment of torsion reference value after described renewal is less than or equal to 0, stop adjusting the clean moment of torsion of described motor;
If not, then make current clean moment of torsion reference value from the second side-play amount increasing a setting, obtain the clean moment of torsion reference value after upgrading, and the clean moment of torsion of described motor is adjusted to the clean moment of torsion reference value after described renewal; Until when the clean moment of torsion reference value after described renewal is greater than the Engine torque disregarding ectocine, stop adjusting the clean moment of torsion of described motor.
5. method according to claim 4, is characterized in that, the described clean moment of torsion to described motor adjusts and also comprises:
In the described time period after entering described big foot pattern initiation control mode, judge whether still to be in big foot pattern initiation control mode every the time lag of setting, if not, then make current clean moment of torsion reference value from increasing described second side-play amount, obtain the clean moment of torsion reference value after upgrading, and the clean moment of torsion of described motor is adjusted to the clean moment of torsion reference value after described renewal; Until the clean moment of torsion reference value after described renewal be greater than described in when disregarding the Engine torque of ectocine, stop adjusting the clean moment of torsion of described motor.
6. method according to claim 1, is characterized in that, describedly carries out moment of torsion control to second clutch, and the margin of error making the difference of the rotating speed of motor and the rotating speed of target of setting meet setting comprises:
Step b1: the rotating speed obtaining motor, and the rotating speed of target of acquisition motor of tabling look-up according to described gas pedal aperture; Calculate the rotating speed of described motor and the difference of rotating speed of target, obtain the speed discrepancy of motor;
Step b2: table look-up according to the speed discrepancy of described motor and obtain scaling factor and integral coefficient;
Proportion adjustment is carried out to the speed discrepancy of described motor, and using the output quantity of described proportion adjustment as the first output value;
Integral adjustment is carried out to the speed discrepancy of described motor, and using the output quantity of described integral adjustment as the second output value;
Obtain the clean moment of torsion of motor, and using the clean moment of torsion of described motor as the 3rd output value;
Calculate described first output value, the second output value and the 3rd output value and, obtain the expectation moment of torsion of described second clutch;
Step b3: second clutch according to the expectation torque drive of described second clutch;
Step b4: circulation performs step b1 ~ step b3, until the speed discrepancy of described motor meets described margin of error.
7. method according to claim 6, is characterized in that, described step b2 also comprises: adjust the clean moment of torsion of described motor, and the described clean moment of torsion to described motor carries out adjustment and comprises:
When entering described big foot pattern initiation control mode, adjust the clean moment of torsion reference value that described clean moment of torsion is setting;
After the time period of setting, judge whether still to be in big foot pattern initiation control mode every the time lag of setting, if, then make current clean moment of torsion reference value from the first side-play amount subtracting a setting, obtain the clean moment of torsion reference value after upgrading, and the clean moment of torsion of described motor is adjusted to the clean moment of torsion reference value after described renewal; Until when the clean moment of torsion reference value after described renewal is less than or equal to 0, stop adjusting the clean moment of torsion of described motor;
If not, then make current clean moment of torsion reference value from the second side-play amount increasing a setting, obtain the clean moment of torsion reference value after upgrading, and the clean moment of torsion of described motor is adjusted to the clean moment of torsion reference value after described renewal; Until when the clean moment of torsion reference value after described renewal is greater than the Engine torque disregarding ectocine, stop adjusting the clean moment of torsion of described motor.
8. method according to claim 7, is characterized in that, the described clean moment of torsion to described motor adjusts and also comprises:
In the described time period after entering described big foot pattern initiation control mode, judge whether still to be in big foot pattern initiation control mode every the time lag of setting, if not, then make current clean moment of torsion reference value from increasing described second side-play amount, obtain the clean moment of torsion reference value after upgrading, and the clean moment of torsion of described motor is adjusted to the clean moment of torsion reference value after described renewal; Until the clean moment of torsion reference value after described renewal be greater than described in when disregarding the Engine torque of ectocine, stop adjusting the clean moment of torsion of described motor.
9. the method according to any one of claim 4,5,7,8, is characterized in that, the clean moment of torsion reference value of described setting is 50nm; The time lag of described setting is 10ms; First side-play amount of described setting is 0.3nm; Second side-play amount of described setting is 2nm; The time period of described setting is 3s.
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| CN103968061B (en) * | 2014-05-19 | 2016-05-11 | 安徽江淮汽车股份有限公司 | The double-clutch automatic gearbox control method that normally starts to walk |
| KR101673813B1 (en) * | 2015-10-01 | 2016-11-16 | 현대자동차주식회사 | Method for controlling launching vehicle with dry type clutch |
| CN105587851B (en) * | 2016-01-15 | 2017-08-15 | 上海汽车变速器有限公司 | The double disengaging type speed changer starting control methods of the speed of wet type six |
| CN107339417B (en) * | 2016-12-13 | 2019-05-21 | 安徽江淮汽车集团股份有限公司 | A kind of double-clutch speed changer method for controlling starting torque and system |
| CN106641024B (en) * | 2017-01-25 | 2018-09-21 | 安徽江淮汽车集团股份有限公司 | A kind of clutch moment of torque pressure adaptive method and system |
| CN109854733A (en) * | 2017-11-30 | 2019-06-07 | 长城汽车股份有限公司 | Starting control method, system and the vehicle of speed changer |
| CN112392945B (en) * | 2020-12-07 | 2021-09-28 | 安徽江淮汽车集团股份有限公司 | Gear shifting control method, gear shifting control device, gear shifting control equipment and storage medium |
| CN112648308B (en) * | 2020-12-30 | 2022-04-29 | 蜂巢传动科技河北有限公司 | Control method, device and system for adjusting speed difference of two ends of synchronizer based on clutch |
| CN114623230B (en) * | 2022-03-21 | 2024-02-20 | 潍柴动力股份有限公司 | Vehicle gear adjusting method, device and system and storage medium |
| CN114962623B (en) * | 2022-05-17 | 2023-09-15 | 上汽通用五菱汽车股份有限公司 | Method, apparatus, computer device and readable storage medium for vehicle start control |
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