CN106763721A - A kind of vehicle automatic speed variator shift control method and device - Google Patents
A kind of vehicle automatic speed variator shift control method and device Download PDFInfo
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- CN106763721A CN106763721A CN201611078742.1A CN201611078742A CN106763721A CN 106763721 A CN106763721 A CN 106763721A CN 201611078742 A CN201611078742 A CN 201611078742A CN 106763721 A CN106763721 A CN 106763721A
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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
- F16H59/24—Inputs being a function of torque or torque demand dependent on the throttle opening
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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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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The present invention provides a kind of vehicle automatic speed variator shift control method and device, wherein, control method includes：After the completion of vehicle start, according to current throttle pedal aperture calculation of throttle pedal aperture rate of change, brake pedal aperture rate of change is calculated according to current brake pedal aperture；Judge whether gas pedal aperture rate of change or brake pedal aperture rate of change exceed given threshold, if then obtaining basic target gear according to current vehicle speed and gas pedal aperture, further according to gas pedal rate of change and brake pedal rate of change size amendment described in basic target gear, obtain target gear；Target gear is otherwise obtained according to current vehicle speed and gas pedal aperture；The target gear of acquisition is exported to gear shifting actuating mechanism.The present invention can accurately catch the current drive demand of driver, the target gear that output matches with driver's drive demand based on gas pedal aperture rate of change and brake pedal rate of change.
Description
Technical field
The present invention relates to automobile technical field, more particularly to a kind of vehicle automatic speed variator shift control method and device.
Background technology
Gearshift control is the key of automatic transmission control function, and what gear selection was solved is the problem when shifted gears, i.e.,
The selection of shifting points, it directly affects the economy of vehicle and the quality of dynamic property.The current actual schedule for using
Mainly one-parameter schedule and two-parameter schedule.One-parameter schedule is examined more using speed as control parameter
Consider, system architecture is fairly simple, even if throttle variable quantity is very big, therefore the size that shifting points and gearshift postpone all without sending out
Changing；Two-parameter schedule overcomes some shortcomings of one-parameter schedule, main to use speed and accelerator open degree two
Parametric joint is controlled, when accelerator open degree is smaller based on fuel economy, when accelerator open degree is larger based on dynamic property.But no matter
One-parameter or two-parameter all no influence of consideration gas pedal aperture rate of change and brake pedal rate of change to target shift, if oily
Door pedal is quickly unclamped, and brake pedal is stepped on rapidly, represents that driver possesses strong anxious deceleration intention, it is desirable to be quickly down to low
Shelves, and operator demand's intensity this moment can not in time be followed with the two-parameter schedule of speed and gas pedal aperture
Change, response speed is slower.
The content of the invention
The technical problems to be solved by the invention are, there is provided a kind of drive demand for being capable of real-time response driver, defeated
Go out to adapt to the vehicle automatic speed variator shift control method and device that most match target gear of current demand.
In order to solve the above-mentioned technical problem, the present invention provides a kind of vehicle automatic speed variator shift control method, including：
Step S1, after the completion of vehicle start, according to current throttle pedal aperture calculation of throttle pedal aperture rate of change, root
Brake pedal aperture rate of change is calculated according to current brake pedal aperture；
Step S2, judges whether gas pedal aperture rate of change and brake pedal aperture rate of change exceed given threshold, if
It is then to perform step S3, otherwise performs step S4；
Step S3, basic target gear is obtained according to current vehicle speed and gas pedal aperture, further according to gas pedal change
Basic target gear described in the size amendment of rate or brake pedal rate of change, obtains target gear；
Step S4, target gear is obtained according to current vehicle speed and gas pedal aperture；
Step S5, the target gear that step S3 or step S4 is obtained is exported to gear shifting actuating mechanism.
Wherein, in the step S3, obtain basic target gear and specifically include：
Shift-up point speed and downshift the point speed under current gear and accelerator open degree are calculated, if current vehicle speed is more than shift-up point
Speed, vehicle upshift, if current vehicle speed is less than downshift point speed, thus vehicle downshift obtains basic target gear.
Wherein, the step S4 is specifically included：
Shift-up point speed and downshift the point speed under current gear and accelerator open degree are calculated, if current vehicle speed is more than shift-up point
Speed, vehicle upshift, if current vehicle speed is less than downshift point speed, thus vehicle downshift obtains target gear.
The present invention also provides a kind of vehicle automatic speed variator shift control apparatus, including：
Computing unit, for after the completion of vehicle start, being become according to current throttle pedal aperture calculation of throttle pedal aperture
Rate, brake pedal aperture rate of change is calculated according to current brake pedal aperture；
Judging unit, for judging gas pedal aperture rate of change and brake pedal aperture that the computing unit calculates
Whether rate of change exceedes given threshold；
First acquisition unit, for judging gas pedal aperture rate of change or the change of brake pedal aperture in judging unit
When rate exceedes given threshold, basic target gear is obtained according to current vehicle speed and gas pedal aperture, become further according to gas pedal
Basic target gear described in the size amendment of rate or brake pedal rate of change, obtains target gear；
Second acquisition unit, for judging gas pedal aperture rate of change or the change of brake pedal aperture in judging unit
When rate is not less than given threshold, target gear is obtained according to current vehicle speed and gas pedal aperture；
Output unit, performs for the target gear that first acquisition unit or second acquisition unit are obtained to be exported to gearshift
Mechanism.
Wherein, the first acquisition unit is additionally operable to calculate the shift-up point speed and downshift under current gear and accelerator open degree
Point speed, if current vehicle speed is more than shift-up point speed, vehicle upshift, if current vehicle speed is less than downshift point speed, vehicle downshifts, by
This obtains basic target gear.
Wherein, the second acquisition unit is additionally operable to calculate the shift-up point speed and downshift under current gear and accelerator open degree
Point speed, if current vehicle speed is more than shift-up point speed, vehicle upshift, if current vehicle speed is less than downshift point speed, vehicle downshifts, by
This obtains target gear.
The beneficial effect of the embodiment of the present invention is：The present invention can be based on gas pedal aperture rate of change and brake pedal
Rate of change accurately catches the current drive demand of driver, and the current acceleration of driver or deceleration demand are reflected in real time, and
According to operator demand's intensity amendment current goal gear, to export the target gear matched with operator demand.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet of vehicle automatic speed variator shift control method of the embodiment of the present invention.
Fig. 2 is a kind of idiographic flow schematic diagram of vehicle automatic speed variator shift control method of the embodiment of the present invention.
Specific embodiment
The explanation of following embodiment is refer to the attached drawing, and to example, the present invention can be used to the specific embodiment implemented.
Refer to shown in Fig. 1, the embodiment of the present invention one provides a kind of vehicle automatic speed variator shift control method, including：
Step S1, after the completion of vehicle start, according to current throttle pedal aperture calculation of throttle pedal aperture rate of change, root
Brake pedal aperture rate of change is calculated according to current brake pedal aperture；
Step S2, judges whether gas pedal aperture rate of change or brake pedal aperture rate of change exceed given threshold,
If then performing step S3, step S4 is otherwise performed；
Step S3, basic target gear is obtained according to current vehicle speed and gas pedal aperture, further according to gas pedal change
Basic target gear described in the size amendment of rate and brake pedal rate of change, obtains target gear；
Step S4, target gear is obtained according to current vehicle speed and gas pedal aperture；
Step S5, the target gear that step S3 or step S4 is obtained is exported to gear shifting actuating mechanism.
It is specifically described below in conjunction with Fig. 2.
Before step S1, also start including gearbox control system TCU, vehicle start.
In step S1, after the completion of vehicle start, according to current throttle pedal aperture α or brake pedal aperture β, count respectively
Calculate gas pedal aperture rate of changeOr brake pedal aperture rate of changeThen gas pedal aperture is judged respectively in step S2
Rate of changeOr brake pedal aperture rate of changeWhether given threshold is exceeded.Gas pedal aperture with driver's intention change,
Gas pedal aperture rate of change is bigger, and the driver's acceleration intention that characterizes is stronger, sets gas pedal aperture rate of change threshold value, if
Gas pedal aperture rate of change exceedes this threshold value, represents driver and possesses strong anxious acceleration intention, existing gearshift controlling party
Formula can not meet current operator demand, it is necessary to correct.Brake pedal aperture is also with driver's intention change, brake pedal
Aperture rate of change is bigger, and the driver's deceleration intention that characterizes is stronger, brake pedal aperture rate of change threshold value is set, if brake pedal
Aperture rate of change exceedes this threshold value, represents driver and possesses strong anxious deceleration intention, and existing schedule can not meet
Current operator demand is, it is necessary to correct.
Judge gas pedal aperture rate of change in step S2More than given threshold, then in step S3 by current vehicle speed Vspeed
With gas pedal aperture α as parameter is jointly controlled, basic target gear Target_ is calculated according to two-parameter schedule
gear1_base.Specifically, the shift-up point vehicle velocity V under current gear and accelerator open degree is calculatedspeed_upWith downshift point speed
Vspeed_downIf current vehicle speed is more than shift-up point vehicle velocity Vspeed_up, vehicle upshift, if current vehicle speed is less than downshift point speed
Vspeed_down, vehicle downshift, thus obtain basic target gear Target_gear1_base.
But, basic target gear Target_gear_base is not final target gear, as previously described, because
The embodiment of the present invention needs to consider gas pedal aperture rate of changeIn the case where it exceedes given threshold, it is necessary to calculating
The basic target gear Target_gear_base for going out is modified, i.e., according to gas pedal aperture rate of changeSize amendment
Basic target gear Target_gear_base, obtains target gear Target_gear.
For example, if the operation of 4 grades of Current vehicle, driver overtakes other vehicles and step on the gas suddenly, according to speed and accelerator open degree
Two-parameter schedule judgement basis target gear Target_gear_base is 3 grades, is stepped on the gas due to this moment anxious, throttle and car
Speed is changed greatly, and speed changer may now be changed when 4 grades of drops, 3 grades of actions are performed according to speed and the two-parameter of accelerator open degree
Gear rule judgement basis target gear Target_gear_base is 2 grades, and current 4 grades of 3 grades of drops are not completed also, but 2 grades of target shift
Instruction has sent, and the present invention meets faster stronger power demand this moment, according to gas pedal aperture to reduce the response time
Modified basis target gear Target_gear_base, if gas pedal aperture rate of change is larger, target gear is 2 grades, is become
Fast device performs 4 grades of drops, 2 grades of instructions, quickly responds operator demand.
Similarly, brake pedal aperture rate of change is judged in step S2More than given threshold, then will be current in step S3
Vehicle velocity VspeedWith gas pedal aperture α as parameter is jointly controlled, basic target gear is calculated according to two-parameter schedule
Target_gear_base.Specifically, the shift-up point vehicle velocity V under current gear and accelerator open degree is calculatedspeed_upWith downshift point car
Fast Vspeed_downIf current vehicle speed is more than shift-up point vehicle velocity Vspeed_up, vehicle upshift, if current vehicle speed is less than downshift point speed
Vspeed_down, vehicle downshift, thus obtain basic target gear Target_gear_base.
But, basic target gear Target_gear_base is not final target gear, due to of the invention real
Applying example needs to consider brake pedal aperture rate of changeIn the case where it exceedes given threshold, it is necessary to basis to calculating
Target gear Target_gear_base is modified, i.e., according to brake pedal rate of changeSize modified basis target gear
Target_gear_base, obtains target gear Target_gear.
Equally for example, if current 3 grades of operations, now driver suddenly steps on brake pedal, is opened according to speed and throttle
The two-parameter schedule judgement basis target gear Target_gear_base of degree is 2 grades, and brake pedal is stepped on due to this moment anxious,
Speed decline is very fast, and speed changer is now possible to be changed according to speed and the two-parameter of accelerator open degree when 3 grades of drops, 2 grades of actions are performed
Gear rule judgement basis target gear Target_gear_base is 1 grade, and current 3 grades of 2 grades of drops are not completed also, but 1 grade of target shift
Instruction has sent, and the present invention meets driver's urgency deceleration intention to reduce the response time, is sentenced according to brake pedal aperture rate of change
It is disconnected whether modified basis target gear Target_gear_base, if brake pedal aperture rate of change is larger, target gear is 1
Shelves, speed changer performs 3 grades of drops, 1 grade of instruction, quickly responds operator demand.
If step S2 judges gas pedal aperture rate of changeWith brake pedal aperture rate of changeNot less than respective
Given threshold, shows that now driver does not have the anxious intention for accelerating or suddenly slowing down, therefore need not consider that gas pedal aperture becomes
RateWith brake pedal aperture rate of changeSize to shift gears influence, directly according to traditional two-parameter schedule meter
Target gear is calculated, i.e., in step s 4, by current vehicle speed VspeedWith gas pedal aperture α as parameter is jointly controlled, according to double
Parameter schedule calculates target gear Target_gear.Specifically, the shift-up point car under current gear and accelerator open degree is calculated
Fast Vspeed_upWith downshift point vehicle velocity Vspeed_downIf current vehicle speed is more than shift-up point vehicle velocity Vspeed_up, vehicle upshift, if current vehicle
Speed is less than downshift point vehicle velocity Vspeed_down, vehicle downshift, thus obtain target gear Target_gear.
Due to mostly using speed and gas pedal aperture as the control parameter of schedule, not considering oil in the prior art
The influence of door pedal rate of change and brake pedal rate of change to target gear, i.e., operator demand's intensity is to target gear
Influence.The present invention sets up gas pedal aperture rate of change and brake pedal rate of change parameter, if it is more than given threshold, sign is driven
The person of sailing possesses stronger anxious acceleration or anxious deceleration demand, is repaiied according to gas pedal aperture rate of change and brake pedal rate of change
The target gear that just traditional two-parameter schedule is obtained, as final output to gear shifting actuating mechanism target gear.Therefore,
The present invention can accurately catch the current drive demand of driver based on gas pedal aperture rate of change and brake pedal rate of change,
The current acceleration of reflection driver in real time or deceleration demand, and according to operator demand's intensity amendment current goal shelves
Position, to export the target gear matched with driver's drive demand.
Based on the embodiment of the present invention one, the embodiment of the present invention two provides a kind of vehicle automatic speed variator shift control apparatus,
Including：
Computing unit, for after the completion of vehicle start, being become according to current throttle pedal aperture calculation of throttle pedal aperture
Rate, brake pedal aperture rate of change is calculated according to current brake pedal aperture；
Judging unit, for judging gas pedal aperture rate of change and brake pedal aperture that the computing unit calculates
Whether rate of change exceedes given threshold；
First acquisition unit, for judging gas pedal aperture rate of change or the change of brake pedal aperture in judging unit
When rate exceedes given threshold, basic target gear is obtained according to current vehicle speed and gas pedal aperture, become further according to gas pedal
Basic target gear described in the size amendment of rate or brake pedal rate of change, obtains target gear；
Second acquisition unit, for judging gas pedal aperture rate of change or the change of brake pedal aperture in judging unit
When rate is not less than given threshold, target gear is obtained according to current vehicle speed and gas pedal aperture；
Output unit, performs for the target gear that first acquisition unit or second acquisition unit are obtained to be exported to gearshift
Mechanism.
Wherein, the first acquisition unit is additionally operable to calculate the shift-up point speed and downshift under current gear and accelerator open degree
Point speed, if current vehicle speed is more than shift-up point speed, vehicle upshift, if current vehicle speed is less than downshift point speed, vehicle downshifts, by
This obtains basic target gear.
Wherein, the second acquisition unit is additionally operable to calculate the shift-up point speed and downshift under current gear and accelerator open degree
Point speed, if current vehicle speed is more than shift-up point speed, vehicle upshift, if current vehicle speed is less than downshift point speed, vehicle downshifts, by
This obtains target gear.
Operation principle about the present embodiment and the beneficial effect brought refer to the explanation of the embodiment of the present invention one,
Here is omitted.
Above disclosed is only present pre-ferred embodiments, can not limit the right model of the present invention with this certainly
Enclose, therefore the equivalent variations made according to the claims in the present invention, still belong to the scope that the present invention is covered.
Claims (6)
1. a kind of vehicle automatic speed variator shift control method, including：
Step S1, after the completion of vehicle start, according to current throttle pedal aperture calculation of throttle pedal aperture rate of change, according to working as
Preceding brake pedal aperture calculates brake pedal aperture rate of change；
Step S2, judges whether gas pedal aperture rate of change or brake pedal aperture rate of change exceed given threshold, if
Step S3 is then performed, step S4 is otherwise performed；
Step S3, basic target gear is obtained according to current vehicle speed and gas pedal aperture, further according to gas pedal rate of change and
Basic target gear described in the size amendment of brake pedal rate of change, obtains target gear；
Step S4, target gear is obtained according to current vehicle speed and gas pedal aperture；
Step S5, the target gear that step S3 or step S4 is obtained is exported to gear shifting actuating mechanism.
2. method according to claim 1, it is characterised in that in the step S3, obtains basic target gear and specifically wraps
Include：
Shift-up point speed and downshift the point speed under current gear and accelerator open degree are calculated, if current vehicle speed is more than shift-up point car
Speed, vehicle upshift, if current vehicle speed is less than downshift point speed, thus vehicle downshift obtains basic target gear.
3. method according to claim 1, it is characterised in that the step S4 is specifically included：
Shift-up point speed and downshift the point speed under current gear and accelerator open degree are calculated, if current vehicle speed is more than shift-up point car
Speed, vehicle upshift, if current vehicle speed is less than downshift point speed, thus vehicle downshift obtains target gear.
4. a kind of vehicle automatic speed variator shift control apparatus, it is characterised in that including：
Computing unit, for after the completion of vehicle start, according to current throttle pedal aperture calculation of throttle pedal aperture rate of change,
Brake pedal aperture rate of change is calculated according to current brake pedal aperture；
Judging unit, for judging gas pedal aperture rate of change and the change of brake pedal aperture that the computing unit calculates
Whether rate exceedes given threshold；
First acquisition unit, for judging that gas pedal aperture rate of change or brake pedal aperture rate of change are super in judging unit
When crossing given threshold, basic target gear is obtained according to current vehicle speed and gas pedal aperture, further according to gas pedal rate of change
Or basic target gear described in the size amendment of brake pedal rate of change, obtain target gear；
Second acquisition unit, for judging that gas pedal aperture rate of change or brake pedal aperture rate of change are equal in judging unit
During not less than given threshold, target gear is obtained according to current vehicle speed and gas pedal aperture；
Output unit, gearshift execution machine is given for the target gear that first acquisition unit or second acquisition unit are obtained to be exported
Structure.
5. device according to claim 4, it is characterised in that the first acquisition unit be additionally operable to calculate current gear and
Shift-up point speed and downshift point speed under accelerator open degree, if current vehicle speed is more than shift-up point speed, vehicle upshift, if current vehicle
Thus speed obtain basic target gear less than downshift point speed, vehicle downshift.
6. device according to claim 4, it is characterised in that the second acquisition unit be additionally operable to calculate current gear and
Shift-up point speed and downshift point speed under accelerator open degree, if current vehicle speed is more than shift-up point speed, vehicle upshift, if current vehicle
Thus speed obtain target gear less than downshift point speed, vehicle downshift.
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| CN108099895A (en) * | 2017-12-15 | 2018-06-01 | 潍柴动力股份有限公司 | A kind of control method and device of the Shifting of AMT |
| CN109733402A (en) * | 2018-12-26 | 2019-05-10 | 江苏大学 | The gear complex control system and its control method of the integrated power drive system of electric car |
| CN109944935A (en) * | 2017-12-21 | 2019-06-28 | 河南森源重工有限公司 | A kind of electric vehicle downshifts control method and control system automatically |
| CN111284499A (en) * | 2018-12-07 | 2020-06-16 | 宝沃汽车（中国）有限公司 | Vehicle control method and device, controller and vehicle |
| CN111332303A (en) * | 2018-11-30 | 2020-06-26 | 比亚迪股份有限公司 | Control method and control device for electric vehicle and electronic equipment |
| CN112141112A (en) * | 2020-09-04 | 2020-12-29 | 珠海格力电器股份有限公司 | Vehicle gear shifting control method and device, storage medium and electronic device |
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| CN108099895A (en) * | 2017-12-15 | 2018-06-01 | 潍柴动力股份有限公司 | A kind of control method and device of the Shifting of AMT |
| CN108099895B (en) * | 2017-12-15 | 2019-12-10 | 潍柴动力股份有限公司 | method and device for controlling gear shifting strategy of AMT |
| CN109944935B (en) * | 2017-12-21 | 2021-09-07 | 河南森源重工有限公司 | Automatic downshift control method and control system for electric vehicle |
| CN109944935A (en) * | 2017-12-21 | 2019-06-28 | 河南森源重工有限公司 | A kind of electric vehicle downshifts control method and control system automatically |
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| CN111332303B (en) * | 2018-11-30 | 2021-07-20 | 比亚迪股份有限公司 | Control method and control device for electric vehicle and electronic equipment |
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