CN102102756A - Method for controlling AT (automatic transmission) difference value gear shifting process - Google Patents
Method for controlling AT (automatic transmission) difference value gear shifting process Download PDFInfo
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Abstract
The invention discloses a method for controlling an AT (automatic transmission) difference value gear shifting process. A drive factor (Dr) which reacts driving requirement in real time and a loading factor (Ld) which reacts the loading condition in real time are added, a difference value of the driving factor and the loading factor among an economic gear shifting chart (pattern D), a motive gear shifting chart (pattern S) and a loading gear shifting chart (pattern L) is carried out, thus a power shifting map is changed as the changes of the driving factor and the loading factor in real time. Through adopting a difference value between Dr, Ld and the pattern D, the pattern S as well as the pattern L by the gear shifting process, a gear shifting line in the gear shifting map is regulated to be adaptive to the driving condition in real time according to the actual driving condition, the calibration is calibrated through calibrating the basic pattern D, pattern S and pattern L gear shifting charts and calibrating parameters which influence the Dr value and the Ld value by a calibration engineer, and the calibration process can be simplified.
Description
Technical field
The invention belongs to the automobile speed variator shift control technique, be specifically related to a kind of vehicle and take the method for difference to carry out the method for process of power shift control.
Technical background
AT speed changer (abbreviation of Automatic Transmission) is based on planetary gear set, realizes the change of velocity ratio by the switching between sun gear, outer tooth ring and the gear framework in the planetary gear set.The AT speed changer adopts fluid torque converter to carry out the transmission of power, thus the AT shifting of transmission have impact little, the characteristics of working stability.The automatic transmission system carries out the posterior infromation that shift decision need be obtained vehicle running state parameter, driver intention, road environment information and veteran driver and relevant expert.Automatic gearbox gear shifting all is to carry out comprehensive back according to above information to select gear shift automatically.
When but traditional AT speed changer is selected the gear shift collection of illustrative plates automatically according to above information, generally have only fixing economic collection of illustrative plates (D pattern), motion collection of illustrative plates (S pattern), upward slope collection of illustrative plates (UP pattern) etc.Wherein the gear shift collection of illustrative plates comprises one grade and rises second gear, second gear and rise third gear, third gear and rise fourth gear, fourth gear and fall third gear, third gear and fall second gear, second gear and fall shift curve such as a grade, and its abscissa is the speed of a motor vehicle, and y coordinate is an accelerator open degree.Being characterized as of economic collection of illustrative plates upgrades early, and it is later to lower category; The motion collection of illustrative plates upgrades and slightly is later than economic collection of illustrative plates, lowers category slightly early than economic collection of illustrative plates; And the upward slope pattern upgrades and slightly is later than the motion collection of illustrative plates, lowers category slightly early than the motion collection of illustrative plates.When vehicle driving is between D pattern and S pattern, just can't select collection of illustrative plates, cause the operating point of Vehicular shift can not be corresponding one by one, and just switch between general this several modes with the actual conditions of vehicle driving.If certainly in order to make more operating point corresponding with the actual conditions of vehicle driving, the quantity of collection of illustrative plates can be increased, such as economic model 1(D1), economic model 2(D2), motor pattern 1(S1), motor pattern 2(S2), upward slope pattern 1(UP1), upward slope pattern 2(UP2) or the like.But so the workload of demarcating personnel along with the increase of gear shift collection of illustrative plates quantity has also just increased greatly.Therefore, need a kind of new gear-shifting control method of exploitation.
Summary of the invention
The purpose of this invention is to provide a kind of automatic transmission difference gear-shifting control method, the operating point that it can reach Vehicular shift is corresponding one by one with the actual conditions of vehicle driving, make the driver when steering vehicle, the actual conditions according to driving that process of power shift can be real-time are carried out gear shift and are satisfied the driving demand; Also can not increase simultaneously demarcation personnel's staking-out work amount.
Scheme rapidly of the present invention is as follows:
A kind of AT speed changer difference process of power shift controlling method, it comprises following process: with economic gearshift map is that to be the S pattern carry out difference and obtain the A gearshift map by driving factor D r for D pattern and power shfit figure; With A gearshift map and load shift figure is that the L pattern is carried out difference by load factor Ld and obtained the B gearshift map.Described A gearshift map and B gearshift map are to change and the real-time gear shift collection of illustrative plates of variation along with driving the factor and load factor.
Wherein, described driving factor D r obtains by the following method: gather the gas pedal slope signal by the throttle velocity transducer and pass to control unit of engine ECU, accelerator pedal position sensor and gather gas pedal aperture signal and pass to ECU, vehicle speed sensor and gather that vehicle speed signal is passed to transmission control unit TCU, gearshift position sensor acquisition gearshift position signal is passed to TCU; ECU passes to TCU with gas pedal slope signal and accelerator open degree signal by the CAN bus again; TCU carries out analytical calculation respectively with gas pedal slope signal, accelerator open degree signal, vehicle speed signal, the gearshift position signal of gathering, and goes out the Dr value by the Fuzzy Calculation system-computed; Wherein accelerator open degree is big more, the big more explanation power requirement of gas pedal slope is strong more, and the Dr value is big more, and gearshift map upgrades after leaning on more; The Dr factor is just calculated otherwise Dr value maintenance currency when having only the speed of a motor vehicle greater than calibration value V0, and same gearshift position also has been the effect that restriction Dr value is calculated, and Dr just calculates otherwise Dr value maintenance currency when having only gearshift position to be the D shelves.
Described load factor Ld obtains by the following method: gather the output shaft of gear-box torque signal by the output shaft of gear-box torque sensor and pass to TCU, gearbox and pull torque sensor and gather gearbox and pull that moment of torsion is passed to TCU, the output shaft of gear-box acceleration transducer is gathered output shaft of gear-box rotating speed slope signal and passed to TCU, TCU with output shaft of gear-box torque T q, gearbox pull torque T q0, output shaft of gear-box rotating speed slope Ta calculates according to following formula, obtains difference in torque:
Wherein T_ita is the output shaft of gear-box rotary inertia, calculate automatically according to driving wheel radius, car weight, speed ratio by TCU.
Wherein difference in torque is for big more at the power that goes up a slope or need during situation that load ratio is more on the occasion of big more explanation vehicle, and Ld value is just big more so, and the gear shift line upgrades after leaning on more; If at this moment the difference in torque big more explanation vehicle that is negative value needs to keep low-grade location to keep engine braking effect carrying out situation such as descending as far as possible, the Ld value is just big more so, and the gear shift line also is to upgrade after leaning on more.
The present invention has increased real time reaction and has driven the driving factor (Dr) of demand and the load factor (Ld) of real time reaction loading condition, allow these two factors between economic gearshift map (D pattern), power shfit figure (S pattern) and load shift figure (L pattern), carry out difference respectively, obtain a real-time gear shift collection of illustrative plates that changes along with driving the variation of the factor and load factor.
Therefore, process of power shift is exactly that the gear shift line of gearshift map the inside adapts to the driving situation according to the driving situation of reality in real-time adjustment by the benefit of taking to obtain after above Dr and Ld and D pattern, S pattern and the L pattern difference, the calibration engineer only need demarcate basic D pattern, S pattern and L pattern gearshift map and demarcate the parameter that influences Dr value and Ld value and just can demarcate demarcation simultaneously, has simplified the demarcation flow process.
Description of drawings
Fig. 1 is gear shift MAP figure;
Fig. 2 is the driving factor (Dr) and load factor (Ld) carry out difference respectively between economic gearshift map (D pattern), power shfit figure (S pattern) and load shift figure (L pattern) a situation map;
Fig. 3 is the factor relation figure that the factor (Dr) is driven in influence;
Fig. 4 is the factor relation figure that influences load factor (Ld).
Embodiment
Further specify the present invention below in conjunction with accompanying drawing:
Fig. 1 is gear shift MAP figure (being process of power shift figure), wherein on behalf of under the economic model one grade, ED_12, ED_23, ED_34, ED_43, ED_32, ED_21 rise second gear, second gear respectively to rise third gear, third gear and rise fourth gear, fourth gear and fall that second gear falls in third gear, third gear, second gear falls one grade, can go out each shift curve figure according to lines shape difference correspondence in the collection of illustrative plates.
Fig. 2 is the driving factor (Dr) and load factor (Ld) carry out difference respectively between economic gearshift map (D pattern), power shfit figure (S pattern) and load shift figure (L pattern) a situation map.In conjunction with Fig. 2, Fig. 3 and Fig. 4, the inventive method is described below:
The first step is carried out difference with power shfit figure (S pattern) by the driving factor (Dr) by economic gearshift map (D pattern) and is obtained the A gearshift map;
In second step, carry out difference by A gearshift map and load shift figure (L pattern) by load factor (Ld) again and obtain the B gearshift map.
The described driving factor (Dr) draws by following steps:
(1) gathers gas pedal slope signal and accelerator pedal position sensor collection gas pedal aperture signal by the throttle velocity transducer, pass to the ECU(control unit of engine respectively);
(2) gather vehicle speed signal and gearshift position sensor acquisition gearshift position signal by vehicle speed sensor, pass to TCU respectively;
(3) ECU passes to TCU with gas pedal slope signal and accelerator open degree signal by the CAN bus again, TCU carries out analytical calculation respectively with gas pedal slope signal, accelerator open degree signal, vehicle speed signal, the gearshift position signal of gathering, and goes out the Dr value by the Fuzzy Calculation system-computed.
Wherein accelerator open degree is big more, the big more explanation power requirement of gas pedal slope is strong more, and the Dr value is big more, and gearshift map upgrades after leaning on more.The Dr factor is just calculated otherwise Dr value maintenance currency when having only the speed of a motor vehicle greater than calibration value V0, and same gearshift position also has been the effect that restriction Dr value is calculated, and Dr just calculates otherwise Dr value maintenance currency when having only gearshift position to be the D shelves.
Described load factor (Ld) draws by following steps:
(1) pulls torque sensor collection speed changer by transmission output shaft torque sensor collection transmission output shaft torque signal, speed changer and pull torque signal and transmission output shaft acceleration transducer collection transmission output speed slope signal, and pass to TCU respectively;
(2) TCU is with the transmission output shaft moment of torsion
, speed changer pulls moment of torsion
, the transmission output speed slope
Calculate according to following formula, obtain difference in torque:
In the formula
Be the transmission output shaft rotary inertia, its formula is as follows:
M is a car weight, unit be the kilogram,
Be the driving wheel radius, unit be rice,
Be coefficient, unit is 1.
Work as difference in torque
For on the occasion of the time, the power that the big more explanation vehicle of its value needs when the situation of going up a slope or load ratio is more (as turn on the aircondition, leewardly travel, trailer travel or the like) is big more, Ld value is just big more so, the gear shift line upgrades after leaning on more.If at this moment the difference in torque big more explanation vehicle that is negative value needs to keep low-grade location to keep engine braking effect carrying out situation such as descending as far as possible, the Ld value is just big more so, and the gear shift line also is to upgrade after leaning on more.
Here drive the factor (Dr) and be 0 to 1 decimal with load factor (Ld).For example Dr=0.4, Ld=0.5, the distance in the horizontal direction that means new A gearshift map and economic gearshift map so is 4:6 with it with the ratio of power shfit figure distance in the horizontal direction.And new B gearshift map and A gearshift map distance in the horizontal direction are 5:5 with it with the ratio of load shift figure distance in the horizontal direction.Wherein among Fig. 2 the difference situation is illustrated.
Protection scope of the present invention is not limited to the above embodiments, and obviously, those skilled in the art can carry out various changes and distortion and do not depart from the scope of the present invention and spirit the present invention.If these changes and distortion belong in the scope of claim of the present invention and equivalent technologies thereof, then the intent of the present invention also comprises these changes and is out of shape interior.
Claims (1)
1. AT speed changer difference process of power shift controlling method is characterized in that: described method is to be that to be the S pattern carry out difference and obtain the A gearshift map by driving factor D r for D pattern and power shfit figure with economic gearshift map; With A gearshift map and load shift figure is that the L pattern is carried out difference by load factor Ld and obtained the B gearshift map; Described A gearshift map and B gearshift map are to change and the real-time gear shift collection of illustrative plates of variation along with driving the factor and load factor;
Wherein, described driving factor D r obtains by the following method:
Gathering the gas pedal slope signal by the throttle velocity transducer passes to control unit of engine ECU, accelerator pedal position sensor and gathers gas pedal aperture signal and pass to ECU, vehicle speed sensor and gather that vehicle speed signal is passed to transmission control unit TCU, gearshift position sensor acquisition gearshift position signal is passed to TCU; ECU passes to TCU with gas pedal slope signal and accelerator open degree signal by the CAN bus again; TCU carries out analytical calculation respectively with gas pedal slope signal, accelerator open degree signal, vehicle speed signal, the gearshift position signal of gathering, and goes out the Dr value by the Fuzzy Calculation system-computed; Wherein accelerator open degree is big more, the big more explanation power requirement of gas pedal slope is strong more, and the Dr value is big more, and gearshift map upgrades after leaning on more; The Dr factor is just calculated otherwise Dr value maintenance currency when having only the speed of a motor vehicle greater than calibration value V0, and same gearshift position also has been the effect that restriction Dr value is calculated, and Dr just calculates otherwise Dr value maintenance currency when having only gearshift position to be the D shelves;
Described load factor Ld obtains by the following method:
Gathering the output shaft of gear-box torque signal by the output shaft of gear-box torque sensor passes to TCU, gearbox and pulls torque sensor and gather gearbox and pull that moment of torsion is passed to TCU, the output shaft of gear-box acceleration transducer is gathered output shaft of gear-box rotating speed slope signal and passed to TCU, TCU with output shaft of gear-box torque T q, gearbox pull torque T q0, output shaft of gear-box rotating speed slope Ta calculates according to following formula, obtains difference in torque:
Wherein T_ita is the output shaft of gear-box rotary inertia, calculate automatically according to driving wheel radius, car weight, speed ratio by TCU;
Wherein difference in torque is for big more at the power that goes up a slope or need during situation that load ratio is more on the occasion of big more explanation vehicle, and Ld value is just big more so, and the gear shift line upgrades after leaning on more; If at this moment the difference in torque big more explanation vehicle that is negative value needs to keep low-grade location to keep engine braking effect carrying out situation such as descending as far as possible, the Ld value is just big more so, and the gear shift line also is to upgrade after leaning on more.
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| CN2011100673309A CN102102756A (en) | 2011-03-21 | 2011-03-21 | Method for controlling AT (automatic transmission) difference value gear shifting process |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518792A (en) * | 2011-12-16 | 2012-06-27 | 奇瑞汽车股份有限公司 | Fuzzy control method for automatic gearbox |
| CN102678906A (en) * | 2012-03-28 | 2012-09-19 | 奇瑞汽车股份有限公司 | Fuzzy control method for controlling speed ratio of progressive transmission |
| CN102887142A (en) * | 2012-10-19 | 2013-01-23 | 同济大学 | Accidental shifting control method for automatic transmission automobile |
| CN104228835A (en) * | 2013-06-07 | 2014-12-24 | 现代自动车株式会社 | Device and method for controlling shift in vehicle |
| CN104828090A (en) * | 2014-12-09 | 2015-08-12 | 北汽福田汽车股份有限公司 | Vehicle control method, device and vehicle |
| CN105383325A (en) * | 2015-11-12 | 2016-03-09 | 重庆长安汽车股份有限公司 | Gear shifting control method and system for pure electric vehicle |
| CN105508588A (en) * | 2016-01-18 | 2016-04-20 | 中国第一汽车股份有限公司 | Automatic transmission gear shifting control method based on driving demands |
| CN107191587A (en) * | 2017-06-29 | 2017-09-22 | 吉利汽车研究院（宁波）有限公司 | A kind of shift of transmission method and device |
| CN107306295A (en) * | 2016-04-21 | 2017-10-31 | 本田技研工业株式会社 | Demand response signal based on covering |
| CN107606132A (en) * | 2017-09-07 | 2018-01-19 | 重庆青山工业有限责任公司 | The anxious accelerator releasing upshift delay control function module frame and control system of speed variator of vehicle with automatic transmission based on fuzzy control |
| CN107606133A (en) * | 2017-09-07 | 2018-01-19 | 重庆青山工业有限责任公司 | The anxious accelerator releasing upshift delay control method of vehicle with automatic transmission based on fuzzy control theory |
| CN108227582A (en) * | 2018-01-05 | 2018-06-29 | 重庆青山工业有限责任公司 | The remained capacity control method of vehicle |
| CN108216253A (en) * | 2018-01-05 | 2018-06-29 | 重庆青山工业有限责任公司 | The driver's type identification control function module frame and control system of vehicle |
| CN108240465A (en) * | 2018-01-05 | 2018-07-03 | 重庆青山工业有限责任公司 | Driver's kind identification method of vehicle |
| CN108253134A (en) * | 2018-01-05 | 2018-07-06 | 重庆青山工业有限责任公司 | The remained capacity control system and functional module construction of vehicle |
| CN106678353B (en) * | 2016-12-28 | 2018-07-24 | 上海汽车集团股份有限公司 | Reinforce the gearshift of vehicle transmission control method of warm wind |
| CN108333921A (en) * | 2017-09-27 | 2018-07-27 | 长春工业大学 | Automobile gear shift rule optimization method based on dynamic programming algorithm |
| CN111251897A (en) * | 2018-11-30 | 2020-06-09 | 比亚迪股份有限公司 | Electric automobile, control method and control device thereof, and electronic equipment |
| CN111361565A (en) * | 2018-12-25 | 2020-07-03 | 长城汽车股份有限公司 | Vehicle gear shifting method and system and vehicle |
| CN114117830A (en) * | 2022-01-25 | 2022-03-01 | 神龙汽车有限公司 | Automatic gearbox gear shifting opportunity calculation method and system based on different working conditions |
| WO2022095522A1 (en) * | 2020-11-03 | 2022-05-12 | 厦门雅迅网络股份有限公司 | Method and system for dynamic gear-shifting control of vehicle on basis of terrain |
| CN115013520A (en) * | 2022-06-17 | 2022-09-06 | 潍柴动力股份有限公司 | AMT gearbox intermediate shaft brake control method, device and controller |
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| CN102518792B (en) * | 2011-12-16 | 2015-04-08 | 奇瑞汽车股份有限公司 | Fuzzy control method for automatic gearbox |
| CN102518792A (en) * | 2011-12-16 | 2012-06-27 | 奇瑞汽车股份有限公司 | Fuzzy control method for automatic gearbox |
| CN102678906A (en) * | 2012-03-28 | 2012-09-19 | 奇瑞汽车股份有限公司 | Fuzzy control method for controlling speed ratio of progressive transmission |
| CN102678906B (en) * | 2012-03-28 | 2015-11-25 | 奇瑞汽车股份有限公司 | A kind of fuzzy control method for infinitely variable transmission Transmission Ratio Control |
| CN102887142A (en) * | 2012-10-19 | 2013-01-23 | 同济大学 | Accidental shifting control method for automatic transmission automobile |
| CN102887142B (en) * | 2012-10-19 | 2015-04-15 | 同济大学 | Accidental shifting control method for automatic transmission automobile |
| CN104228835B (en) * | 2013-06-07 | 2018-05-08 | 现代自动车株式会社 | It is used for the apparatus and method for controlling gear shift in the car |
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| CN106678353B (en) * | 2016-12-28 | 2018-07-24 | 上海汽车集团股份有限公司 | Reinforce the gearshift of vehicle transmission control method of warm wind |
| CN107191587A (en) * | 2017-06-29 | 2017-09-22 | 吉利汽车研究院（宁波）有限公司 | A kind of shift of transmission method and device |
| CN107191587B (en) * | 2017-06-29 | 2020-04-24 | 吉利汽车研究院（宁波）有限公司 | Transmission gear shifting method and device |
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| CN108333921A (en) * | 2017-09-27 | 2018-07-27 | 长春工业大学 | Automobile gear shift rule optimization method based on dynamic programming algorithm |
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| CN108240465A (en) * | 2018-01-05 | 2018-07-03 | 重庆青山工业有限责任公司 | Driver's kind identification method of vehicle |
| CN108227582A (en) * | 2018-01-05 | 2018-06-29 | 重庆青山工业有限责任公司 | The remained capacity control method of vehicle |
| CN111251897A (en) * | 2018-11-30 | 2020-06-09 | 比亚迪股份有限公司 | Electric automobile, control method and control device thereof, and electronic equipment |
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