CN106481803A - Electric automobile two keeps off line traffic control automatic transmission shift intervention control method - Google Patents
Electric automobile two keeps off line traffic control automatic transmission shift intervention control method Download PDFInfo
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- CN106481803A CN106481803A CN201611031247.5A CN201611031247A CN106481803A CN 106481803 A CN106481803 A CN 106481803A CN 201611031247 A CN201611031247 A CN 201611031247A CN 106481803 A CN106481803 A CN 106481803A
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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
- F16H59/38—Inputs being a function of speed of gearing elements
- F16H59/40—Output shaft 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
- 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
- F16H61/0437—Smoothing ratio shift by using electrical signals
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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
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/2807—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted using electric control signals for shift actuators, e.g. electro-hydraulic control therefor
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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
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/32—Electric motors actuators or related electrical control means therefor
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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
- F16H2059/366—Engine or motor speed
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a kind of electric automobile two keeps off line traffic control automatic transmission shift intervention control method, the method stops the tach signal n of OFF signal, transmission output speed sensor by speed changer ECU by detecting D2, motor speed sensor tach signal n1, accelerator pedal position sensor opening amount signalαDetermine a need for being risen two gears, a gear is dropped by two gears by a gear, and carry out the intervention control of shift process motor speed.So that a gear rises two gears as an example, two gear motor rotating speed of target functions are risen according to a gear and determines that a gear rises two and keeps off motor rotating speed of target, motor ECU control motor speed reaches a gear and rises two gear motor rotating speed of target, the intervention control of line traffic control automatic transmission upshift process is carried out, realizes the steady upshift of line traffic control automatic transmission.
Description
Technical field
The present invention relates to a kind of control method of automatic transmission, the more precisely a kind of gear of electric automobile two line traffic control is certainly
Dynamic shift of transmission intervenes control method.
Background technology
Automatic transmission is widely used in the various vehicles such as automobile, electric automobile, engineering machinery.Existing automatic transmission
Mainly there are hydraulic mechanical type automatic transmission (AT), metal band type ST (CVT), automatic mechanical transmission
(AMT), double-clutch automatic transmission (DCT) four major types.
Above-mentioned four classes automatic transmission all adopts electric-controlled hydraulic servomechanism installation, realizes shift process control, complex structure, becomes
This height and increased control difficulty and complexity.Especially the executing agency of DCT includes：By hydraulic pump, hydraulic valve and accumulator
The oil supply mechanism of composition, by hydraulic pressure or motor-driven pulsewidth modulation gear shifting actuating mechanism, by hydraulic pressure or motor-driven clutch
Device operating mechanism.These hydraulic controls cause speed changer complicated integral structure, high cost and increased control difficulty and answer
Miscellaneous degree.
With automotive electronic technology, the extensive application of the progressively ripe and automobile network communication technology of automatic control technology,
X-by-wire on Automobile has become following development trend of automobile.Automobile line traffic control (X-By-Wire) technology be exactly with electric wire and electronics
The control action of driver is become electric signal through sensor, is input to automatically controlled replacing mechanically and hydraulically system by controller
Unit, produces control signal by ECU and drives executing agency to carry out action required.X-by-wire on Automobile can reduce part
Complexity, reduce hydraulic pressure and mechanical driving device, while electric wire move towards the freedom that the flexibility of arrangement expands Automobile Design
Space.
Motor and line traffic control need not be interrupted for realizing driver in the power shifting of line traffic control automatic transmission, i.e. shift process
Power between automatic transmission, if not to motor using intervention control, in shift process, motor speed can not meet and change
The requirement of gear rotating speed, so as to cause shift shock, and reduces the life-span of motor and line traffic control automatic transmission.For guaranteeing electronic vapour
Car two keeps off the steady gearshift of line traffic control automatic transmission, it is to avoid the interruption of motor input power and shift shock in shift process,
The shift process that electric automobile two keeps off line traffic control automatic transmission must be controlled.
Content of the invention
It is an object of the invention to provide a kind of can either avoid the interruption of motor input power and gearshift in shift process
Impact, can realize the two gear line traffic control automatic transmission shifts intervention control methods that electric automobile is steadily shifted gears again.A kind of electronic
Automobile two keeps off line traffic control automatic transmission shift intervention control method, and the gear line traffic control of electric automobile two for realizing the control method becomes automatically
The control system of fast device includes that speed changer ECU, motor ECU, motor, D position switch, transmission output shaft turn
Fast sensor, motor speed sensor, accelerator pedal position sensor, a gear electromagnetic clutch, two gear electromagnetic clutch,
A gear has been previously stored in speed changer ECU has risen two gear law curves, two gear drops, one gear law curve.
Technical scheme is as follows：
After motor starting, electricity on speed changer ECU and motor ECU, electric automobile two keep off line traffic control fluid drive
Device gearshift intervention control method brings into operation, and the control method is comprised the following steps：
Step 1, speed changer ECU detection D stop the tach signal n of OFF signal, transmission output speed sensor2, electricity
The tach signal n of motivation speed probe1, accelerator pedal position sensor opening amount signal α；
Step 2, judge whether to be linked into D gear：When speed changer ECU detects D and stops OFF signal connection, it is judged as being linked into D
Gear, carries out step 3；Otherwise, when speed changer ECU detects D and stops OFF signal access failure, judge not as being linked into D gear,
Return to step 1；
Step 3, judge whether need by one gear rise two gears：When speed changer ECU detects transmission output speed sensing
The tach signal n of device2Electric automobile two is met with the opening amount signal α of accelerator pedal position sensor keep off line traffic control automatic transmission one
When gear rises the liter catch point that two keep off on law curve, be judged as needing two gears to be risen by a gear, carry out step 4；Otherwise, when speed changer electricity
Control unit detects the tach signal n of transmission output speed sensor2Opening amount signal α with accelerator pedal position sensor
It is unsatisfactory for electric automobile two and keeps off line traffic control automatic transmission one keeping off when rising liter catch point that two keep off on law curves, being judged as need not be by
One gear rises two and keeps off, and carries out step 6；
Step 4, a gear rise two and keep off process control：Speed changer ECU passes through the transmission output speed sensor for detecting
Tach signal n2Two are risen with a gear and keep off motor rotating speed of target function f12(n2)=βn2[(Z1Z11)/(Z0Z10)- (Z2Z21)/
(Z0Z20)]/ [(Z1Z11)/(Z0Z10)] determining that a gear rises two and motor rotating speed of target is kept off, motor ECU controls motor
Rotating speed reaches a gear and rises two gear motor rotating speed of target, in formula：n2Rotating speed for transmission output shaft；Z0Tooth for input gear
Number；Z1The number of teeth for a gear input gear； Z10The number of teeth for a gear driving gear；Z11The number of teeth for a gear driven gear；Z2For
The number of teeth of two gear input gears；Z20The number of teeth for two gear driving gear；Z21The number of teeth for two gear driven gears；β is gearshift target
Rotation speed change coefficient；
Step 5, judge one gear rise two gear whether terminate：Control process motor speed n is kept off when a gear rises two1More than or equal to a gear
Rise two and keep off motor rotating speed of target f12(n2) when, it is judged as that a gear rises two gear control process and not yet terminates, returns to step 4；No
Then, control process motor speed n is kept off when a gear rises two1Two are risen less than a gear and keep off motor rotating speed of target f12(n2) when, judge
Two gear control process are risen for a gear to terminate, return to step 1；
Step 6, judge whether need by two gear drop gears：When speed changer ECU detects transmission output speed sensing
The tach signal n of device2Electric automobile two is met with the opening amount signal α of accelerator pedal position sensor keep off line traffic control automatic transmission two
During the downshift point that gear drop one is kept off on law curve, be judged as needing a gear to be dropped by two gears, carry out step 7；Otherwise, when speed changer electricity
Control unit detects the tach signal n of transmission output speed sensor2Opening amount signal α with accelerator pedal position sensor
When being unsatisfactory for electric automobile two and keeping off line traffic control automatic transmission two and keep off the downshift point that drop one is kept off on law curve, being judged as need not be by
Two gear drops one are kept off, and return to step 1；
Step 7, two gear drops one keep off process control：Speed changer ECU passes through the transmission output speed sensor for detecting
Tach signal n2One is dropped with two gears keep off motor rotating speed of target function f21(n2)= βn2[(Z1Z11)/(Z0Z10)] /[(Z1Z11)/
(Z0Z10)-(Z2Z21)/(Z0Z20)] determining that two gears drop one keeps off motor rotating speed of target, motor ECU control motor turns
Speed reaches two gears drop one and keeps off motor rotating speed of target, in formula：n2Rotating speed for transmission output shaft；Z0The number of teeth for input gear；
Z1The number of teeth for a gear input gear； Z10The number of teeth for a gear driving gear；Z11The number of teeth for a gear driven gear；Z2For two
The number of teeth of gear input gear；Z20The number of teeth for two gear driving gear；Z21The number of teeth for two gear driven gears；β turns for gearshift target
Fast variation coefficient；
Step 8, judge two gear drop one gear whether terminate：Control process motor speed n is kept off when two gears drop one1Less than or equal to two gears
Drop one keeps off motor rotating speed of target f21(n2) when, it is judged as that two gears drop one is kept off control process and not yet terminated, returns to step 7；No
Then, control process motor speed n is kept off when two gears drop one1One is dropped more than two gears keep off motor rotating speed of target f21(n2) when, judge
A gear control process is dropped for two gears to terminate, return to step 1；
After driver turns off ignition switch, speed changer ECU and motor ECU power-off, electric automobile two keep off line traffic control
Automatic transmission shift intervention control method terminates operation.
Two gear processes, the gear of step 7 two drop one are risen in the gear of above-mentioned steps 4 one to keep off in process control, target revolution speed variation of shifting gears
Factor beta is the fixed value for setting, β=0.95～1.05.
Compared with prior art, its advantage is the present invention：
The electric automobile two of the present invention keeps off line traffic control automatic transmission shift intervention control method, is controlled by the way of gearshift intervention
Motor speed, determines motor gearshift rotating speed of target according to motor gearshift rotating speed of target function, by speed changer ECU
Control signal is conveyed to motor ECU, motor ECU controls motor speed, in driver's normal operational
Smooth shift is realized in the case of accelerator pedal, it is to avoid the shift shock in shift process and power interruption.
Description of the drawings
Fig. 1 is the structure that the electric automobile two of the embodiment of the present invention keeps off line traffic control automatic transmission control system and transmission device
Schematic diagram and its power transmission line.
Fig. 2 is that the electric automobile two of the embodiment of the present invention keeps off line traffic control automatic transmission shift intervention control method flow chart.
Fig. 3 is that the electric automobile two of the embodiment of the present invention keeps off line traffic control automatic transmission shift law curve schematic diagram.
In figure：10. input shaft 11. 1 keeps off input shaft 12. 2 and keeps off 30. input gear of input shaft, 31. 1 gear input tooth
Take turns 32. 2 gear input gears 41. 1 keep off electromagnetic clutch 411. 1 keep off electromagnetic clutch solenoids 42. 2 keep off electromagnetism from
Clutch 421. 2 is kept off electromagnetic clutch solenoid 51. 1 and keeps off 52. two gear driving gear of driving gear, 61. 1 gear output shaft
62. output shaft 2nd gear 71. 1 keeps off driven gear 72. 2 and keeps off the automatically controlled list of 8. transmission output shaft of driven gear, 100. speed changer
First 100a. mono- keeps off the sub- 100b. bis- in control output end and keeps off the sub- 100d. motor rotating speed of target control output end in control output end
Sub 200. motor ECU, 300. motor D-SW.D position switch APS. accelerator pedal position sensor OSS. speed change
Device OSS ESS. motor speed sensor D12. a gear rises two and keeps off law curve D21. two gear drops one are kept off
Law curve.
Specific embodiment
With reference to the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is described in detail,
Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments；Based on the reality in the present invention
Example is applied, the every other embodiment obtained under the premise of creative work is not made by those of ordinary skill in the art is belonged to
The scope of protection of the invention.
A kind of electric automobile two keeps off line traffic control automatic transmission shift intervention control method, realizes the electronic of the embodiment of the present invention
Automobile two keeps off the control system of line traffic control automatic transmission includes speed changer ECU 100, motor ECU 200, electronic
Machine 300, D position switch D-SW, transmission output speed sensor OSS, motor speed sensor ESS, accelerator pedal position
Sensors A PS, a gear electromagnetic clutch 41, two keep off electromagnetic clutch 42, have been previously stored one in speed changer ECU 100
Gear rises two and keeps off law curve D12, two gear drop one keep off law curve D21.
The binding post of one gear electromagnetic clutch solenoid 411 is by wire and a gear of speed changer ECU 100
The sub- 100a in control output end is connected；The binding post of two gear electromagnetic clutch solenoids 421 is by wire and speed changer electricity
The two of control unit 100 keep off the sub- 100b in control output ends and are connected.
Speed changer ECU 100 keeps off electromagnetic clutch solenoid 411, two by control one and keeps off electromagnetic clutch electromagnetism
The energising of coil 421 or power-off, so as to control a gear electromagnetic clutch 41, two to keep off engagement and the separation of electromagnetic clutch 42.
The sub- 100d in the motor rotating speed of target control output end of speed changer ECU 100 is by wire and electronic Electrical Control
Unit 200 is connected, and motor ECU 200 is connected with motor 300 by wire, and control motor speed reaches electricity
Motivation rotating speed of target.
The transmission device for realizing the gear line traffic control automatic transmission of electric automobile two of the embodiment of the present invention includes input shaft 10,
Gear input shaft 11, two keeps off input shaft 12, and keeps off output shaft 61, output shaft 2nd gear 62, transmission output shaft 8；On input shaft 10
It is fixedly connected with input gear 30；Input gear 30 is input into a gear gear of input gear 31, two successively along its gear outer circumferential
Gear 32 is often engaged；One gear input gear 31, two keeps off Partner of the input gear 32 respectively with a gear electromagnetic clutch 41, two gears
The Partner connection of electromagnetic clutch 42；The drive end of one gear electromagnetic clutch 41, the drive end of two gear electromagnetic clutch 42 divide
Not Tong Guo a gear output shaft 61, output shaft 2nd gear 62 keep off driving gear 51, two gear driving gear 52 with one and be connected；One gear driving tooth
It is normal that wheel 51, two gear driving gear 52 keeps off driven gear 72 with a gear driven gear 71, two successively along its gear outer circumferential respectively
Engagement.
The electric automobile two for the embodiment of the present invention being further illustrated with reference to Fig. 1, Fig. 2, Fig. 3 keeps off line traffic control automatic transmission
Each forward gear power transmission line.
One gear transmission：The control of speed changer ECU 100 one keeps off the energising engagement of electromagnetic clutch 41, two gear electromagnetic clutch
42 power-off are separated, and the power that motor 300 is exported passes to input gear 30 by input shaft 10, and input gear 30 is by the power
Pass to a gear input gear 31 further, then a gear driven gear 71 passed to by a gear electromagnetic clutch 41 of engagement,
And then power is transferred to transmission output shaft 8, realize gear transmission.
Two gear transmissions：The control of speed changer ECU 100 two keeps off the energising engagement of electromagnetic clutch 42, a gear electromagnetic clutch
41 power-off are separated, and the power that motor 300 is exported passes to input gear 30 by input shaft 10, and input gear 30 is by the power
Pass to two gear input gears 32 further, then two gear driven gears 72 are passed to by two gear electromagnetic clutch 42 of engagement,
And then power is transferred to transmission output shaft 8, realize the transmission of two gears.
Neutral：The control of speed changer ECU 100 one keeps off the gear electromagnetic clutch 42 of electromagnetic clutch 41, two and is in power-off
Released state, realizes neutral.
The electric automobile two of the present invention keeps off line traffic control automatic transmission shift intervention control method flow chart as shown in Fig. 2 electricity
After motivation 300 is started, electricity on speed changer ECU 100 and motor ECU 200, electric automobile two keep off line traffic control and become automatically
Fast device gearshift intervention control method brings into operation, and the control method is comprised the following steps：
Step S1, speed changer ECU 100 detect D position switch D-SW signal, transmission output speed sensor OSS turn
Fast signal n2, motor speed sensor tach signal n1, accelerator pedal position sensor APS opening amount signal α；
Step S2, judge whether to be linked into D gear：When speed changer ECU 100 detects D position switch D-SW signal and connects, sentence
Break as D gear is linked into, carry out step S3；Otherwise, when speed changer ECU 100 detects D position switch D-SW signal access failure,
Judge, not as being linked into D gear, to return to step S1；
Step S3, judge whether need by one gear rise two gears：When speed changer ECU 100 detects transmission output speed
The tach signal n of sensor OSS2Electric automobile two is met with the opening amount signal α of accelerator pedal position sensor APS keep off line traffic control certainly
The gear of dynamic speed changer one rises two and keeps off law curve D12On liter catch point when, be judged as need by one gear rise two gears, carry out step S4；No
Then, when speed changer ECU 100 detects the tach signal n of transmission output speed sensor OSS2With accelerator pedal position
The opening amount signal α for putting sensors A PS is unsatisfactory for one gear liter of the gear line traffic control of electric automobile two automatic transmission, two gear law curve D12On
Liter catch point when, be judged as need not by one gear rise two gears, carry out step S6；
Step S4, a gear rise two and keep off process control：Speed changer ECU 100 is passed by the transmission output speed for detecting
The tach signal n of sensor OSS2Two are risen with a gear and keep off motor rotating speed of target function f12(n2)=βn2[(Z1Z11)/(Z0Z10)-
(Z2Z21)/(Z0Z20)]/ [(Z1Z11)/(Z0Z10)] determine that a gear rises two and keeps off motor rotating speed of target, motor ECU 200
Control motor speed reaches a gear and rises two gear motor rotating speed of target, in formula：n2Rotating speed for transmission output shaft 8；Z0For defeated
Enter the number of teeth of gear 30；Z1The number of teeth for a gear input gear 31； Z10The number of teeth for a gear driving gear 51；Z11For one gear from
The number of teeth of moving gear 71；Z2The number of teeth for two gear input gears 32；Z20The number of teeth for two gear driving gear 52；Z21Driven for two gears
The number of teeth of gear 72；β is gearshift target revolution speed variation coefficient；
Step S5, judge one gear rise two gear whether terminate：Control process motor speed n is kept off when a gear rises two1More than or equal to one
Gear rises two and keeps off motor rotating speed of target f12(n2) when, it is judged as that a gear rises two gear control process and not yet terminates, returns to step S4；
Otherwise, control process motor speed n is kept off when a gear rises two1Two are risen less than a gear and keep off motor rotating speed of target f12(n2) when, sentence
Break as two gear control process of a gear liter and terminate, return to step S1；
Step S6, judge whether need by two gear drop gears：When speed changer ECU 100 detects transmission output speed
The tach signal n of sensor OSS2Electric automobile two is met with the opening amount signal α of accelerator pedal position sensor APS keep off line traffic control certainly
The gear of dynamic speed changer two drop one keeps off law curve D21On downshift point when, be judged as need by two gear drop gears, carry out step S7；No
Then, when speed changer ECU 100 detects the tach signal n of transmission output speed sensor OSS2With accelerator pedal position
The opening amount signal α for putting sensors A PS is unsatisfactory for two gear drop of the gear line traffic control of electric automobile two automatic transmission, one gear law curve D21On
Downshift point when, be judged as need not by two gear drop gears, return to step S1；
Step S7, two gear drops one keep off process control：Speed changer ECU 100 is passed by the transmission output speed for detecting
The tach signal n of sensor OSS2One is dropped with two gears keep off motor rotating speed of target function f21(n2)= βn2[(Z1Z11)/(Z0Z10)] /
[(Z1Z11)/(Z0Z10)-(Z2Z21)/(Z0Z20)] determining that two gears drop one keeps off motor rotating speed of target, motor ECU 200 is controlled
Motor speed processed reaches two gears drop one and keeps off motor rotating speed of target, in formula：n2Rotating speed for transmission output shaft 8；Z0For input
The number of teeth of gear 30；Z1The number of teeth for a gear input gear 31； Z10The number of teeth for a gear driving gear 51；Z11Driven for a gear
The number of teeth of gear 71；Z2The number of teeth for two gear input gears 32；Z20The number of teeth for two gear driving gear 52；Z21For two gear driven tooth
The number of teeth of wheel 72；β is gearshift target revolution speed variation coefficient；
Step S8, judge two gear drop one gear whether terminate：Control process motor speed n is kept off when two gears drop one1Less than or equal to two
Gear drop one keeps off motor rotating speed of target f21(n2) when, it is judged as that two gears drop one is kept off control process and not yet terminated, returns to step S7；
Otherwise, control process motor speed n is kept off when two gears drop one1One is dropped more than two gears keep off motor rotating speed of target f21(n2) when, sentence
Break as two gear drops, one gear control process and terminate, return to step S1；
After driver turns off ignition switch, speed changer ECU 100 and 200 power-off of motor ECU, electric automobile two
Gear line traffic control automatic transmission shift intervention control method terminates operation.
In the present embodiment, gearshift target revolution speed variation factor beta is taken as 1.
Embodiment of the present invention step S3 is further illustrated with reference to Fig. 3 to judge whether to need to rise two gears by a gear：
As shown in figure 3, embodiment of the present invention electric automobile two keeps off line traffic control automatic transmission shift law curve schematic diagram, D12For
One gear rises two and keeps off law curve；As transmission output speed signal n2D is run to accelerator opening angle signal α12On curve
A (1450,50) when putting, speed changer ECU 100 keeps off line traffic control automatic transmission upshift rule according to electric automobile two and judges A
Point rises two for a gear and keeps off law curve D12On liter catch point, be judged as needing carrying out a gear rising two and keep off process control；Otherwise, judge
Two gear process control are risen for a gear need not be carried out.
Embodiment of the present invention step S6 is further illustrated with reference to Fig. 3 to judge whether to need to drop a gear by two gears：
As shown in figure 3, embodiment of the present invention electric automobile two keeps off line traffic control automatic transmission shift law curve schematic diagram, D21For
Two gear drops one keep off law curve；As transmission output speed signal n2D is run to accelerator opening angle signal α21On curve
B (950,50) when putting, speed changer ECU 100 keeps off line traffic control automatic transmission downshift rule according to electric automobile two and judges B
Point keeps off law curve D for two gear drops one21On downshift point, be judged to need to carry out two gears drop one keep off process control；Otherwise, it is determined that
Process control is kept off for two gears drop one need not be carried out.
Embodiments of the present invention are explained in detail above in conjunction with accompanying drawing, but the present invention is not limited to above-mentioned enforcement
Mode, in the ken that art those of ordinary skill possesses, can also be without departing from present inventive concept
Under the premise of make a variety of changes.
Claims (2)
1. a kind of electric automobile two keeps off line traffic control automatic transmission shift intervention control method, realizes the electric automobile of the control method
The control system of two gear line traffic control automatic transmission includes speed changer ECU（100）, motor ECU（200）, electronic
Machine (300), D position switch (D-SW), transmission output speed sensor (OSS), motor speed sensor (ESS), acceleration
Pedal position sensor (APS), gear electromagnetic clutch (41), two gears electromagnetic clutch (42), in speed changer ECU
(100) gear has been previously stored in has risen two gear law curve (D12) and two gear drops, one gear law curve (D21), it is characterised in that
The control method is comprised the following steps：
Step 1, speed changer ECU (100) detection D position switch (D-SW) signal, transmission output speed sensor
（OSS）Tach signal n2, motor speed sensor (ESS) tach signal n1, accelerator pedal position sensor (APS)
Opening amount signal α；
Step 2, judge whether to be linked into D gear：When speed changer ECU (100) detects D position switch (D-SW) signal and connects,
It is judged as D gear is linked into, carries out step 3；Otherwise, do not connect when speed changer ECU (100) detects D position switch (D-SW) signal
When logical, judge, not as being linked into D gear, to return to step 1；
Step 3, judge whether need by one gear rise two gears：Turn when speed changer ECU (100) detects transmission output shaft
Fast sensor（OSS）Tach signal n2Two gear of electric automobile is met with the opening amount signal α of accelerator pedal position sensor (APS)
The gear of line traffic control automatic transmission one rises two and keeps off law curve (D12) on liter catch point when, be judged as need by one gear rise two gears, carry out
Step 4；Otherwise, when speed changer ECU (100) detects transmission output speed sensor（OSS）Tach signal n2
Electric automobile two is unsatisfactory for the opening amount signal α of accelerator pedal position sensor (APS) and keeps off one gear liter two of line traffic control automatic transmission
Gear law curve (D12) on liter catch point when, be judged as need not by one gear rise two gears, carry out step 6；
Step 4, a gear rise two and keep off process control：Speed changer ECU (100) passes through the transmission output speed for detecting
Sensor（OSS）Tach signal n2Two are risen with a gear and keep off motor rotating speed of target function f12(n2)=βn2[(Z1Z11)/(Z0Z10)-
(Z2Z21)/(Z0Z20)]/ [(Z1Z11)/(Z0Z10)] determine that a gear rises two and keeps off motor rotating speed of target, motor ECU
（200）Control motor speed reaches a gear and rises two gear motor rotating speed of target, in formula：n2For transmission output shaft（8）Turn
Speed；Z0For input gear（30）The number of teeth；Z1For a gear input gear（31）The number of teeth； Z10For a gear driving gear（51）'s
The number of teeth；Z11For a gear driven gear（71）The number of teeth；Z2For two gear input gears（32）The number of teeth；Z20For two gear driving gear
（52）The number of teeth；Z21For two gear driven gears（72）The number of teeth；β is gearshift target revolution speed variation coefficient；
Step 5, judge one gear rise two gear whether terminate：Control process motor speed n is kept off when a gear rises two1More than or equal to a gear
Rise two and keep off motor rotating speed of target f12(n2) when, it is judged as that a gear rises two gear control process and not yet terminates, returns to step 4；No
Then, control process motor speed n is kept off when a gear rises two1Two are risen less than a gear and keep off motor rotating speed of target f12(n2) when, judge
Two gear control process are risen for a gear to terminate, return to step 1；
Step 6, judge whether need by two gear drop gears：Turn when speed changer ECU (100) detects transmission output shaft
Fast sensor（OSS）Tach signal n2Two gear of electric automobile is met with the opening amount signal α of accelerator pedal position sensor (APS)
The gear of line traffic control automatic transmission two drop one keeps off law curve (D21) on downshift point when, be judged as need by two gear drop gears, carry out
Step 7；Otherwise, when speed changer ECU (100) detects transmission output speed sensor（OSS）Tach signal n2
Electric automobile two is unsatisfactory for the opening amount signal α of accelerator pedal position sensor (APS) and keeps off two gear drop one of line traffic control automatic transmission
Gear law curve (D21) on downshift point when, be judged as need not by two gear drop gears, return to step 1；
Step 7, two gear drops one keep off process control：Speed changer ECU (100) passes through the transmission output speed for detecting
Sensor（OSS）Tach signal n2One is dropped with two gears keep off motor rotating speed of target function f21(n2)= βn2[(Z1Z11)/
(Z0Z10)] /[(Z1Z11)/(Z0Z10)-(Z2Z21)/(Z0Z20)] determine that two gears drop one keeps off motor rotating speed of target, electronic Electrical Control
Unit（200）Control motor speed reaches two gears drop one and keeps off motor rotating speed of target, in formula：n2For transmission output shaft（8）
Rotating speed；Z0For input gear（30）The number of teeth；Z1For a gear input gear（31）The number of teeth； Z10For a gear driving gear
（51）The number of teeth；Z11For a gear driven gear（71）The number of teeth；Z2For two gear input gears（32）The number of teeth；Z20For two gears actively
Gear（52）The number of teeth；Z21For two gear driven gears（72）The number of teeth；β is gearshift target revolution speed variation coefficient；
Step 8, judge two gear drop one gear whether terminate：Control process motor speed n is kept off when two gears drop one1Less than or equal to two gears
Drop one keeps off motor rotating speed of target f21(n2) when, it is judged as that two gears drop one is kept off control process and not yet terminated, returns to step 7；No
Then, control process motor speed n is kept off when two gears drop one1One is dropped more than two gears keep off motor rotating speed of target f21(n2) when, judge
A gear control process is dropped for two gears to terminate, return to step 1.
2. electric automobile as claimed in claim 1 two keeps off line traffic control automatic transmission shift intervention control method, it is characterised in that
Two gear processes, the gear of step 7 two drop one are risen in the gear of the step 4 one to keep off in process control, the gearshift target revolution speed variation factor beta
It is the fixed value for setting, β=0.95～1.05.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611031247.5A CN106481803A (en) | 2016-11-22 | 2016-11-22 | Electric automobile two keeps off line traffic control automatic transmission shift intervention control method |
| PCT/CN2017/086616 WO2018095006A1 (en) | 2016-11-22 | 2017-05-31 | Gear shifting intervention control method for two-gear x-by-wire automatic transmission of electric car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611031247.5A CN106481803A (en) | 2016-11-22 | 2016-11-22 | Electric automobile two keeps off line traffic control automatic transmission shift intervention control method |
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| Publication Number | Publication Date |
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| CN106481803A true CN106481803A (en) | 2017-03-08 |
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| CN201611031247.5A Pending CN106481803A (en) | 2016-11-22 | 2016-11-22 | Electric automobile two keeps off line traffic control automatic transmission shift intervention control method |
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| CN (1) | CN106481803A (en) |
| WO (1) | WO2018095006A1 (en) |
Cited By (3)
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| CN107061718A (en) * | 2017-05-25 | 2017-08-18 | 福建中青汽车技术有限公司 | A kind of negative torque downshift method |
| CN107199915A (en) * | 2017-05-25 | 2017-09-26 | 福建中青汽车技术有限公司 | A kind of pure electric vehicle shifting system |
| WO2018095006A1 (en) * | 2016-11-22 | 2018-05-31 | 山东理工大学 | Gear shifting intervention control method for two-gear x-by-wire automatic transmission of electric car |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115045997B (en) * | 2022-06-13 | 2023-03-21 | 吉林大学 | Optimal energy efficiency gear shifting control method for front-rear shaft independently driven electric automobile |
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| WO2018095006A1 (en) | 2018-05-31 |
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