CN102635689A - Gearshift control method and system as well as engineering machinery for dragging operation - Google Patents
Gearshift control method and system as well as engineering machinery for dragging operation Download PDFInfo
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- CN102635689A CN102635689A CN2012101333794A CN201210133379A CN102635689A CN 102635689 A CN102635689 A CN 102635689A CN 2012101333794 A CN2012101333794 A CN 2012101333794A CN 201210133379 A CN201210133379 A CN 201210133379A CN 102635689 A CN102635689 A CN 102635689A
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Abstract
The invention discloses a gearshift control method. The method comprises the following steps of: acquiring the turbine torque and a gear signal under the current accelerator state; keeping the current gear when the gear signal is determined to be a neutral gear signal, or comparing the turbine torque and a preset torque range; keeping the current gear when the turbine torque is in the preset torque range; raising the gear when the turbine torque is less than the minimum torque in the preset torque range and the gear signal is determined not to be the maximal gear position; and lowering the gear when the turbine torque is greater than the maximal torque in the preset torque range and the gear signal is determined not to be the minimum gear signal. In the gearshift control method disclosed by the invention, the encountered working conditions are determined according to the turbine torque, and further the automatic control of the gear is carried out.
Description
Technical field
The present invention relates to technical field of engineering machinery, more particularly, relate to a kind of gear-shifting control method, system and be used to the engineering machinery of the work of drawing.
Background technique
For improving the adaptive capacity of engineering machinery, in traditional engineering machinery transmission, increase fluid torque converter and carry out the hydraulic machine transmission abominable operating environment and operating mode.This hydromechanical transmission has had hydraudynamic drive and mechanically operated plurality of advantages concurrently, such as stable starting, quicken rapid etc.; Simultaneously,, can reduce the dynamic load and the vibration of transmission system, prolong the working life of transmission system, improve vehicle safety and passing ability through liquid transfer power.Usually as long as coupling rationally, both can have been avoided " stopping working " problem of motor under the mechanical transmission heavy duty.
Practice shows, even motor is not flame-out, does not also allow to work in the poor efficiency district for a long time.As under " stall " operating mode, working one minute, the working medium of hydraudynamic drive is because mechanical energy all is converted into heat energy and " overheated ".Equally, under high speed light loading,,, hydraulic losses reduces the loss that causes energy owing to making transmission efficiency like untimely change up work.
At present, mainly be to operate by driver's experiences to guarantee hydraudynamic drive in efficient district's work, because it is the operating condition of engineering machinery is complicated, work under bad environment, therefore, very high to driver's requirement.For lowering requirement, just need electronic transmission shifting to the driver.
At present, the engineering machinery automaitc shfit mainly is that the automaitc shfit technology that accordings to automobile realizes.Because engineering vehicle operation operating mode is obviously different with vehicle behavior, the automaitc shfit technology of automobile can not be adapted to engineering machinery fully.
Therefore, how realizing Automatic Shift Control, improve the working efficiency and the operation quality of the engineering machinery that is used to the work of drawing, alleviate driver's labor intensity, is those skilled in the art's problem demanding prompt solutions.
Summary of the invention
In view of this, the present invention provides a kind of gear-shifting control method, system and is used to the engineering machinery of the work of drawing, and is used to the automaitc shfit of the engineering machinery of the work of drawing with realization.
For realizing above-mentioned purpose, the existing scheme that proposes is following:
A kind of gear-shifting control method comprises:
Obtain turbine moment of torsion and gear signal under the current throttle state;
When judging that said gear signal is the neutral gear signal, keep current gear, otherwise compare said turbine moment of torsion and predetermined torque scope;
When said turbine moment of torsion is in the predetermined torque scope, keep current gear;
When said turbine moment of torsion less than the minimal torque in the said predetermined torque scope, and judge when said gear signal is not high tap position signal the rising gear;
When said turbine moment of torsion during, and judge when said gear signal is not the lowest gear signal, reduce gear greater than the Maximum Torque in the said predetermined torque scope.
Preferably, also comprise:
Obtain current shift mode;
If said current shift mode is manual control mode, then said transforming gear control is realized by the manual operation Joystick; If said current shift mode is an automatic control mode, then obtain turbine moment of torsion and gear signal under the current throttle state.
Preferably, also comprise:
Obtain the gear state of a control, itself and said current shift mode are compared;
When satisfying when pre-conditioned, change said current shift mode to the identical control mode of said gear state of a control, said pre-conditioned be that said gear state of a control and said current shift mode are inequality.
Preferably, said pre-conditionedly also comprise: it is still inequality to postpone gear state of a control and said current shift mode that Preset Time obtains.
Preferably, after said turbine moment of torsion is less than the minimal torque in the said predetermined torque scope, also comprise:
Continuously the interval Preset Time between preset times and adjacent twice obtains turbine moment of torsion and gear signal under the current throttle state;
When judging turbine moment of torsion that said continuous preset times is obtained all less than said minimal torque, and said gear signal is not when all being high tap position signal, the rising gear.
Preferably, after said turbine moment of torsion is greater than the Maximum Torque in the said predetermined torque scope, also comprise:
Continuously the interval Preset Time between preset times and adjacent twice obtains turbine moment of torsion and gear signal under the current throttle state;
When judging turbine moment of torsion that said continuous preset times is obtained all greater than said Maximum Torque, and said gear signal reduces gear when all not being the lowest gear signal.
Preferably, also comprise:
Obtain brake signal;
When said brake signal is a non-NULL, and judge when said gear signal is not the lowest gear signal, reduce gear.
A kind of shift control comprises:
The gear signal sensor is used to gather gear signal;
The turbine torque sensor is used to gather the turbine moment of torsion;
Electronic control unit is used to obtain turbine moment of torsion and gear signal under the current throttle state; When judging that said gear signal is the neutral gear signal, keep current gear, otherwise compare said turbine moment of torsion and predetermined torque scope; When said turbine moment of torsion is in the predetermined torque scope, keep current gear; When said turbine moment of torsion less than the minimal torque in the said predetermined torque scope, and judge when said gear signal is not high tap position signal the rising gear; When said turbine moment of torsion during, and judge when said gear signal is not the lowest gear signal, reduce gear greater than the Maximum Torque in the said predetermined torque scope.
Preferably; Switch the control mode selector switch of manual control mode and automatic control mode; Said electronic control unit also is used to judge current shift mode, if said current shift mode is manual control mode, said control mode selector switch switches to manual mode; If said current shift mode is an automatic control mode, said control mode selector switch switches to automatic mode.
Preferably, also comprise: the brake signal acquiring unit is used to obtain brake signal;
Said electronic control unit is used to also judge that said brake signal is a non-NULL, and judges when said gear signal is not the lowest gear signal, reduces gear.
A kind of engineering machinery that is used to the work of drawing comprises above-mentioned system.
Preferably, said engineering machinery is bulldozer, push-harrower, grader or loader.
Can find out from above-mentioned technological scheme, in the gear-shifting control method disclosed by the invention, confirm the current operating mode that runs into, and then carry out the automatic control of gear according to the turbine moment of torsion; Concrete, when said turbine moment of torsion less than the minimal torque in the said predetermined torque scope, and judge when said gear signal is not high tap position signal the rising gear; When said turbine moment of torsion during, and judge when said gear signal is not the lowest gear signal, reduce gear, realized the automaitc shfit of the engineering machinery of traction work greater than the Maximum Torque in the said predetermined torque scope.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technological scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of the disclosed a kind of gear-shifting control method of the embodiment of the invention;
Fig. 2 is the flow chart of the disclosed a kind of gear-shifting control method of another embodiment of the present invention;
Fig. 3 is the structural drawing of the disclosed a kind of shift control of another embodiment of the present invention;
Fig. 4 is the structural drawing of the disclosed a kind of shift control of another embodiment of the present invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technological scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The embodiment of the invention discloses a kind of gear-shifting control method, system and be used to the engineering machinery of the work of drawing, with the automaitc shfit of the engineering machinery that realizes being used to the work of drawing.
The disclosed a kind of gear-shifting control method of present embodiment, as shown in Figure 1, comprise step:
S101, obtain the turbine moment of torsion M under the current throttle state
TWith gear signal N;
S102, judge whether said gear signal N is the neutral gear signal, if, then execution in step S103, keep current gear; Otherwise, execution in step S104, the said turbine moment of torsion M of comparison
TWith predetermined torque scope (M
T1, M
T2);
S105, as said turbine moment of torsion M
TBe in predetermined torque scope (M
T1, M
T2), i.e. M
T1≤M
T≤M
T2, then execution in step S103, keep current gear;
S106, as said turbine moment of torsion M
TLess than said predetermined torque scope (M
T1, M
T2) in minimal torque M
T1, i.e. M
T＜M
T1, execution in step S107, judge whether said gear signal N is high tap position signal;
If not, then execution in step S108, rising gear;
S109, as said turbine moment of torsion M
TGreater than said predetermined torque scope (M
T1, M
T2) in Maximum Torque M
T2, i.e. M
T＞M
T2, execution in step S110, judge whether said gear signal N is the lowest gear signal;
If not, then execution in step S111, reduce gear.
In the disclosed gear-shifting control method of present embodiment; Confirm the current operating mode that runs into according to the turbine moment of torsion; And then carry out the automatic control of gear, and realized the automatic control of transforming gear, both guaranteed working efficiency and functional reliability that vehicle drive system is higher; Guarantee the fuel economy and the driving comfort of vehicle again, significantly improved the comprehensive usability of engineering machinery.
Another embodiment of the present invention also discloses a kind of gear-shifting control method, comprises step:
S201, obtain current shift mode;
S202, judge according to said current shift mode information whether current shift mode is automatic control mode; When judgement is not automatic control mode; Explain that said current shift mode is manual control mode, then execution in step S203, by manual operation Joystick control transforming gear.
When being judged as automatic control mode, execution in step S204, obtain the turbine moment of torsion M under the current throttle state
TWith gear signal N;
S205, judge when whether said gear signal N is the neutral gear signal, if, then execution in step S206, keep current gear; Otherwise, execution in step S207, the said turbine moment of torsion M of comparison
TWith predetermined torque scope (M
T1, M
T2);
S208, as said turbine moment of torsion M
TBe in predetermined torque scope (M
T1, M
T2), i.e. M
T1≤M
T≤M
T2, then execution in step S206, keep current gear;
S209, as said turbine moment of torsion M
TLess than said predetermined torque scope (M
T1, M
T2) in minimal torque M
T1, i.e. M
T＜M
T1, execution in step S210, judge whether said gear signal is high tap position signal;
If not, then execution in step S211, rising gear;
S212, as said turbine moment of torsion M
TGreater than said predetermined torque scope (M
T1, M
T2) in Maximum Torque M
T2, i.e. M
T＞M
T2, execution in step S213, judge whether said gear signal is the lowest gear signal;
If not, then execution in step S214, reduce gear.
In the above-described embodiments; When obtaining current shift mode, can also obtain the gear state of a control, confirm current shift mode according to said current shift mode information; Compare said gear state of a control and current shift mode; When satisfying when pre-conditioned, change said current shift mode to the identical shift mode of said gear state of a control, the pre-conditioned of this moment is that said gear state of a control and said current gear shift are inequality.
In order to make gear shift more accurate opportunity; Above-mentioned pre-conditioned can also comprising: gear state of a control and said current shift mode that the delay Preset Time obtains are still inequality; Concrete; Be taken as 0.5s retard time to time constant arbitrarily between the 1s, also can be set at other times according to demands of different.
In two above-mentioned method embodiments, in order to confirm gear shift opportunity comparatively accurately, when judging said turbine moment of torsion M
TLess than said minimal torque M
T1After also comprise:
Continuously the interval Preset Time between preset times and adjacent twice obtains turbine moment of torsion and gear signal under the current throttle state;
When judging turbine moment of torsion that said continuous preset times is obtained all less than said minimal torque, and said gear signal is not when all being high tap position signal, the rising gear.
Concrete, obtain turbine moment of torsion and gear signal blanking time scope can but be not defined as 0.3-0.5s, the number of times that obtains can but be not defined as 3-5.
And, as said turbine moment of torsion M
TGreater than said minimal torque M
T1After also comprise:
Continuously the interval Preset Time between preset times and adjacent twice obtains turbine moment of torsion and gear signal under the current throttle state;
When judging turbine moment of torsion that said continuous preset times is obtained all greater than said Maximum Torque, and said gear signal reduces gear when all not being the lowest gear signal.
Concrete, obtain turbine moment of torsion and gear signal blanking time scope can but be not defined as 0.5-1.0s, the number of times that obtains can but be not defined as 3-5.
In two above-mentioned embodiments, said predetermined torque scope (M
T1, M
T2) can be one, and can but do not limit select the maximum throttle state for use the turbine moment of torsion as predetermined torque scope (M
T1, M
T2); Certainly, said predetermined torque scope (M
T1, M
T2) can also be for a plurality of, and corresponding one by one with different throttles, at this moment, also need obtain throttle signal when obtaining said turbine moment of torsion and gear signal.
Because the predetermined torque scope under each throttle is inequality, when throttle was higher, Maximum Torque in the predetermined torque scope and minimal torque were all higher, and when throttle was low, Maximum Torque in the predetermined torque scope and minimal torque were all lower.Therefore, for accurate control gear shift opportunity, the signal of throttle is necessary, and, the throttle signal also with this throttle under the predetermined torque scope corresponding one by one.
In order more to improve the disclosed gear controlling method of above-mentioned two embodiments of the present invention, make it not only under running state, control transforming gear, can also control transforming gear in braking state; Therefore, above-mentioned two disclosed gear-shifting control methods of embodiment can also comprise:
Obtain brake signal;
When said brake signal is a non-NULL, and judge when said gear signal is not the lowest gear signal, reduce gear.
Concrete, when the brake signal that obtains is non-NULL, explain that the brake petal of engineering machinery this moment is operated, the speed of engineering machinery slows down, and need gear be reduced.Judge whether gear signal is lowest gear, if not, gear then reduced.
Engineering machinery is when the traction gear engaged, and getting working efficiency η according to the operating mode shift point is the corresponding turbine moment of torsion M η-70-75% of the different accelerator open degrees in 70-75% place.Certainly, can choose other torque value according to concrete operating mode shift point.
Corresponding different throttle sizes, the turbine moment of torsion is different; But for certain accelerator open degree value; η is that the corresponding turbine torque value size in 70-75% place is 2 fixing values; Promptly (η-70-75%) (η-70-75%), bigger value is a shift-up point to a bigger value Mmax, and less value is for lowering category a little with a less value Mmin.
When engineering machinery is being gone transportation gear and retreat shelves when going, being taken at working efficiency η according to the shift point of operating mode vehicle is the corresponding turbine moment of torsion M η-75-80% of 75-80%.Certainly, can choose other torque value according to concrete operating mode shift point.
The same, η is that the corresponding turbine torque value size in 75-80% place is 2 fixing values, and promptly (η-75-80%) (η-75-80%), bigger value is a shift-up point to a bigger value Mmax, and less value is for lowering category a little with a less value Mmin.
The disclosed a kind of shift control of another embodiment of the present invention, as shown in Figure 3, comprising:
In the disclosed shift control of present embodiment, electronic control unit 103 comprises:
Memory module stores torque range;
Acquisition module is used to obtain turbine moment of torsion and gear signal;
First judge module is used to judge whether said gear signal is the neutral gear signal;
The control signal generation module is used for when said first judge module judges that said gear signal is the neutral gear signal, generates the signal that keeps current gear;
Second judge module is used for when said first judge module is judged said gear signal not for the neutral gear signal, comparing said turbine moment of torsion and predetermined torque scope;
The 3rd judge module is used to judge said gear signal whether high tap position signal or lowest gear signal;
Said control signal generation module also is used for; When said second judge module judges that the turbine moment of torsion is less than the minimal torque in the said predetermined torque scope; And said the 3rd judge module is judged when said gear signal is not high tap position signal, is generated the rising gear signal; When said second judge module is judged the turbine moment of torsion greater than the Maximum Torque in the said predetermined torque scope, and said the 3rd judge module judges when said gear signal is not the lowest gear signal, generates and reduces gear signal.
At this moment, the torque range of said memory module storage is one, and can but do not limit select the maximum throttle state for use the turbine moment of torsion as the predetermined torque scope.
When torque range is a plurality of; And with throttle signal one by one at once; The disclosed shift control of the foregoing description, as shown in Figure 4, except that comprising: gear signal sensor 201, turbine torque sensor 202 and the electronic control unit 203; Also comprise: throttle signal sensor 204 is used to gather throttle signal.
And the memory module in the said electronic control unit stores the corresponding relation of torque range and throttle signal; Acquisition module removes need obtain turbine moment of torsion, gear signal and throttle signal.Also need according to the throttle signal that obtains, obtain and the corresponding torque range of the said throttle signal that obtains from the corresponding relation of torque range and throttle signal.
The throttle signal of throttle signal sensor acquisition, the turbine moment of torsion that the turbine torque sensor is gathered, the gear signal of gear signal sensor acquisition, all the communication interface through electronic control unit inputs to electronic control unit; The acquisition module of electronic control unit obtains throttle signal, turbine moment of torsion and gear signal, and the torque range under definite current throttle state, and said gear signal is transferred to said first judge module and the 3rd judge module; With said turbine torque transfer to the second judge module, said first judge module judges whether said gear signal is the neutral gear signal; When being the neutral gear signal, said control signal generation module generates the signal that keeps current gear; When not being the neutral gear signal, second judge module is compared said turbine moment of torsion and predetermined torque scope; When said second judge module is judged the turbine moment of torsion less than the minimal torque in the said predetermined torque scope, and said the 3rd judge module judges that said electronic control unit generated the rising gear signal when said gear signal was not high tap position signal; When said second judge module is judged the turbine moment of torsion greater than the Maximum Torque in the said predetermined torque scope, and said the 3rd judge module judges when said gear signal is not the lowest gear signal that said electronic control unit generates and reduces gear signal.
As shown in Figure 4 equally; The disclosed shift control of present embodiment can also comprise: the control mode selector switch 205 that switches manual control mode and automatic control mode; Electronic control unit 203 also is used to judge current shift mode; If said current shift mode is manual control mode, control mode selector switch 205 switches to manual mode; If said current shift mode is an automatic control mode, control mode selector switch 205 switches to automatic mode.
In order to be implemented in braking state control transforming gear, as shown in Figure 4 equally, the disclosed shift control of present embodiment also comprises: brake signal acquiring unit 206 is used to obtain brake signal;
Another embodiment of the present invention also discloses a kind of engineering machinery that is used to the work of drawing, and this project machinery comprises the open shift control of the foregoing description.
No longer shift control is carried out detailed argumentation here, see also the disclosed content of the foregoing description.
Concrete, the disclosed engineering machinery of present embodiment specifically can be bulldozer, push-harrower, grader or loader, certainly, can also be used to the engineering machinery of the work of drawing for other.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and other embodiments' difference that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the present invention.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiments shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (12)
1. a gear-shifting control method is characterized in that, comprising:
Obtain turbine moment of torsion and gear signal under the current throttle state;
When judging that said gear signal is the neutral gear signal, keep current gear, otherwise compare said turbine moment of torsion and predetermined torque scope;
When said turbine moment of torsion is in the predetermined torque scope, keep current gear;
When said turbine moment of torsion less than the minimal torque in the said predetermined torque scope, and judge when said gear signal is not high tap position signal the rising gear;
When said turbine moment of torsion during, and judge when said gear signal is not the lowest gear signal, reduce gear greater than the Maximum Torque in the said predetermined torque scope.
2. method according to claim 1 is characterized in that, also comprises:
Obtain current shift mode;
If said current shift mode is manual control mode, then said transforming gear control is realized by the manual operation Joystick; If said current shift mode is an automatic control mode, then obtain turbine moment of torsion and gear signal under the current throttle state.
3. method according to claim 2 is characterized in that, also comprises:
Obtain the gear state of a control, itself and said current shift mode are compared;
When satisfying when pre-conditioned, change said current shift mode to the identical shift mode of said gear state of a control, said pre-conditioned be that said gear state of a control and said current shift mode are inequality.
4. method according to claim 3 is characterized in that, said pre-conditionedly also comprise: it is still inequality to postpone gear state of a control and said current shift mode that Preset Time obtains.
5. according to any described method among the claim 1-4, it is characterized in that, when after said turbine moment of torsion is less than the minimal torque in the said predetermined torque scope, also comprising:
Continuously the interval Preset Time between preset times and adjacent twice obtains turbine moment of torsion and gear signal under the current throttle state;
When judging turbine moment of torsion that said continuous preset times is obtained all less than said minimal torque, and said gear signal is not when all being high tap position signal, the rising gear.
6. according to any described method among the claim 1-4, it is characterized in that, after said turbine moment of torsion is greater than the Maximum Torque in the said predetermined torque scope, also comprise:
Continuously the interval Preset Time between preset times and adjacent twice obtains turbine moment of torsion and gear signal under the current throttle state;
When judging turbine moment of torsion that said continuous preset times is obtained all greater than said Maximum Torque, and said gear signal reduces gear when all not being the lowest gear signal.
7. according to any described method among the claim 1-4, it is characterized in that, also comprise:
Obtain brake signal;
When said brake signal is a non-NULL, and judge when said gear signal is not the lowest gear signal, reduce gear.
8. a shift control is characterized in that, comprising:
The gear signal sensor is used to gather gear signal;
The turbine torque sensor is used to gather the turbine moment of torsion;
Electronic control unit is used to obtain turbine moment of torsion and gear signal under the current throttle state; When judging that said gear signal is the neutral gear signal, keep current gear, otherwise compare said turbine moment of torsion and predetermined torque scope; When said turbine moment of torsion is in the predetermined torque scope, keep current gear; When said turbine moment of torsion less than the minimal torque in the said predetermined torque scope, and judge when said gear signal is not high tap position signal the rising gear; When said turbine moment of torsion during, and judge when said gear signal is not the lowest gear signal, reduce gear greater than the Maximum Torque in the said predetermined torque scope.
9. system according to claim 8; It is characterized in that; Also comprise: the control mode selector switch that switches manual control mode and automatic control mode; Said electronic control unit also is used to judge current shift mode, if said current shift mode is manual control mode, said control mode selector switch switches to manual mode; If said current shift mode is an automatic control mode, said control mode selector switch switches to automatic mode.
10. system according to claim 9 is characterized in that, also comprises: the brake signal acquiring unit is used to obtain brake signal; Said electronic control unit is used to also judge that said brake signal is a non-NULL, and judges when said gear signal is not the lowest gear signal, reduces gear.
11. an engineering machinery that is used to the work of drawing is characterized in that, comprises any described system like claim 8-10.
12. engineering machinery according to claim 11 is characterized in that, said engineering machinery is bulldozer, push-harrower, grader or loader.
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|---|---|---|---|
| CN201210133379.4A CN102635689B (en) | 2012-04-28 | 2012-04-28 | Gear-shifting control method, system and the engineering machinery for the work of drawing |
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|---|---|---|---|
| CN201210133379.4A CN102635689B (en) | 2012-04-28 | 2012-04-28 | Gear-shifting control method, system and the engineering machinery for the work of drawing |
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Cited By (1)
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| CN114407646A (en) * | 2022-02-10 | 2022-04-29 | 湖南行必达网联科技有限公司 | Intelligent control method and system for power takeoff |
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|---|---|
| CN102635689B (en) | 2015-07-29 |
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