CN106337930A - The high-speed step-up intervention control method for three-gear line control automatic transmission of electric car - Google Patents
The high-speed step-up intervention control method for three-gear line control automatic transmission of electric car Download PDFInfo
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- CN106337930A CN106337930A CN201611031231.4A CN201611031231A CN106337930A CN 106337930 A CN106337930 A CN 106337930A CN 201611031231 A CN201611031231 A CN 201611031231A CN 106337930 A CN106337930 A CN 106337930A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
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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
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
- F16H59/70—Inputs being a function of gearing status dependent on the ratio established
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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 high-speed step-up intervention control method for the three-gear line control automatic transmission of an electric car. The method variator detects D switch signal, the rotation speed signal n2 of transmission output shaft speed sensor, the rotation speed signal n1 of motor speed sensor, opening amount signal (i) Alpha (/i) of accelerator pedal position sensor by TCU, to determine whether there is a need for rising the second gear from first gear, rising the third gear from the second gear, and the motor speed intervention control during each upshift. For example, the first gear up to the second gear, the target rotate speed of the second-speed motor is determined according to the target rotation speed function of the second-gear-up motor, and the electric-control unit of the motor controls the rotation speed of the motor to reach the target rotation speed, carrying out the intervention control of the speed-up process of the wire-controlled automatic transmission to realize the stable speed-up of the wire-controlled automatic transmission.
Description
Technical field
The present invention relates to a kind of control method of automatic transmission, more precisely a kind of electric automobile three gear line traffic control is certainly
Dynamic variator upshift intervenes control method.
Background technology
Automatic transmission is widely used in the various vehicle 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 class automatic transmission, all using electric-controlled hydraulic servomechanism installation, realize shift process control, complex structure, one-tenth
This height and increased control difficulty and complexity.The especially actuator 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 make variator complicated integral structure, high cost and increased control difficulty and answer
Miscellaneous degree.
With the extensive application of automotive electronic technology, 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 is exactly with electric wire and electronics
Controller, to replace mechanically and hydraulically system, the control action of driver is become the signal of telecommunication through sensor, is input to automatically controlled
Unit, produces control signal by ECU and drives actuator to carry out action required.X-by-wire on Automobile can reduce part
Complexity, reduce hydraulic pressure and mechanical driving device, electric wire move towards the motility of arrangement and expands the freedom of Automobile Design simultaneously
Space.
For realizing the power shifting of line traffic control automatic transmission, that is, in shift process, driver need not interrupt motor and line traffic control
Power between automatic transmission, if not controlled using intervention to motor, in shift process, motor speed can not meet and change
The requirement of gear rotating speed, thus causing shift shock, and reduces motor and the life-span of line traffic control automatic transmission.For guaranteeing electronic vapour
Car three 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 line traffic control automatic transmission must be kept off to electric automobile three is 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, is capable of three gear line traffic control automatic transmission upshift intervention control methods of the steady upshift of electric automobile again.A kind of electronic
Automobile three gear line traffic control automatic transmission upshift intervention control method, the electric automobile three gear line traffic control realizing this control method becomes automatically
The control system of fast device includes variator ECU, motor ECU, motor, d position switch, transmission output shaft turn
Fast sensor, motor speed sensor, accelerator pedal position sensor, one gear electromagnetic clutch, two gear electromagnetic clutchs, three
Gear electromagnetic clutch, has been previously stored a gear liter two gear law curves, two gears rise three gear rules songs in variator ECU
Line.
Technical scheme is as follows:
After motor starting, electricity on variator ECU and motor ECU, electric automobile three keeps off line traffic control fluid drive
Device upshift intervention control method brings into operation, and this control method comprises the following steps:
Step 1, variator ECU detect that d stops the tach signal n of OFF signal, transmission output speed sensor2, electricity
The tach signal n of motivation speed probe1, the opening amount signal α of accelerator pedal position sensor;
Step 2, judge whether to be linked into d gear: when variator ECU detects d and stops OFF signal and connect, be judged as being linked into d
Gear, carries out step 3;Otherwise, when variator ECU detects d and stops OFF signal access failure, judge not to be to be linked into d gear,
Return to step 1;
Step 3, judge whether need by one gear rise two gears: when variator ECU detect transmission output speed sensing
The tach signal n of device2Meet electric automobile three gear line traffic control automatic transmission liter with the opening amount signal α of accelerator pedal position sensor
When a gear rises the liter catch point on two gear law curves in gear law curve, it is judged as needing rising two gears by a gear, carries out step 4;
Otherwise, when variator ECU detects the tach signal n of transmission output speed sensor2Pass with accelerator pedal position
The opening amount signal α of sensor is unsatisfactory for a gear in electric automobile three gear line traffic control automatic transmission upshift law curve and rises two gear rules songs
During liter catch point on line, it is judged as not needing rising two gears by a gear, carries out step 6;
Step 4, a gear rise two gear process control: variator ECU passes through the transmission output speed sensor detecting
Tach signal n2Rise two gear motor rotating speed of target function f with a gear12(n2)=βn2[(z1z11)/(z0z10)- (z2z21)/
(z0z20)]/ [(z1z11)/(z0z10)] determining that a gear rises two gear motor rotating speed of target, 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 upshift target
Rotation speed change coefficient;
Step 5, judge one gear rise two gear whether terminate: when one gear rise two gear control process motor speed n1More than or equal to a gear
Rise two gear motor rotating speed of target f12(n2) when, it is judged as that a gear rises two gear control process and not yet terminates, return to step 4;No
Then, when a gear rises two gear control process motor speed n1Rise two gear motor rotating speed of target f less than a gear12(n2) when, judge
Rise two gear control process for a gear to terminate, return to step 1;
Step 6, judge whether need by two gear rise three gears: when variator ECU detect transmission output speed sensing
The tach signal n of device2Meet electric automobile three gear line traffic control automatic transmission liter with the opening amount signal α of accelerator pedal position sensor
When two gears rise the liter catch point on three gear law curves in gear law curve, it is judged as needing rising three gears by two gears, carries out step 7;
Otherwise, when variator ECU detects the tach signal n of transmission output speed sensor2Pass with accelerator pedal position
The opening amount signal α of sensor is unsatisfactory for two gears in electric automobile three gear line traffic control automatic transmission upshift law curve and rises three gear rules songs
During liter catch point on line, it is judged as not needing rising three gears by two gears, returns to step 1;
Step 7, two gears rise three gear process control: variator ECU passes through the transmission output speed sensor detecting
Tach signal n2Rise three gear motor rotating speed of target function f with two gears23(n2)= βn2[ (z2z21)/(z0z20)-1]/
[(z2z21)/(z0z20)] determining that two gears rise three gear motor rotating speed of target, motor ECU controls motor speed to reach
Two gears rise three gear motor rotating speed of target, in formula: n2For transmission output speed;z0The number of teeth for input 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 upshift target
Fast variation coefficient;
Step 8, judge two gear rise three gear whether terminate: when two gear rise three gear control process motor speed n1More than or equal to two gears
Rise three gear motor rotating speed of target f23(n2) when, it is judged as that two gears rise three gear control process and not yet terminate, return to step 7;No
Then, when two gears rise three gear control process motor speed n1Rise three gear motor rotating speed of target f less than two gears23(n2) when, judge
Rise three gear control process for two gears to terminate, return to step 1;
After driver turns off ignition switch, variator ECU and motor ECU power-off, electric automobile three keeps off line traffic control
Automatic transmission upshift intervention control method terminates to run.
Rise two gear process control, step 7 two gear liter three gear process control in above-mentioned steps 4 one gear, upshift rotating speed of target becomes
Changing factor beta is the fixed value setting, β=0.95~1.05.
Compared with prior art, its advantage is the present invention:
The electric automobile three gear line traffic control automatic transmission upshift intervention control method of the present invention, is controlled by the way of upshift intervention
Motor speed, determines motor upshift rotating speed of target according to motor upshift rotating speed of target function, by variator ECU
Control signal is conveyed to motor ECU, motor ECU controls motor speed, in driver's normal operational
Smooth-going upshift is realized, it is to avoid the shift shock during upshift and power interruption in the case of accelerator pedal.
Brief description
Fig. 1 is the structure with actuating device for the electric automobile three gear line traffic control automatic transmission control system of the embodiment of the present invention
Schematic diagram and its power transmission line.
Fig. 2 is the electric automobile three gear line traffic control automatic transmission upshift intervention control method flow chart of the embodiment of the present invention.
Fig. 3 is the electric automobile three gear line traffic control automatic transmission upshift law curve schematic diagram of the embodiment of the present invention.
In figure: 10. input shaft 11. 1 gear input shaft 12. 2 gear input shaft 30. input gear 31. 1 gear input tooth
Take turns 32. 2 gear input gears 41. 1 gear electromagnetic clutchs 411. 1 gear electromagnetic clutch solenoids 42. 2 gear electromagnetism from
Clutch 421. 2 gear electromagnetic clutch solenoid 43. 3 gear electromagnetic clutch 431. 3 gear electromagnetic clutch solenoid
51. 1 gear driving gear 52. two gear driving gear 61. 1 gear output shaft 62. output shaft 2nd gear 71. 1 gear driven gears
The 72. 2 gear driven gear 8. transmission output shaft 100. variator ECU 100a. mono- gear 100b. in control output end
The two gear 100c. in control output end tri- gear control output end sub- 100d. motor rotating speed of target control output end 200. electricity
Motivation ECU 300. motor d-sw.d position switch aps. accelerator pedal position sensor oss. transmission output shaft
Speed probe ess. motor speed sensor d12. a gear rises two gear law curve d23. two gears rise three gear law curves.
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
Apply example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of not making creative work broadly falls into
The scope of protection of the invention.
A kind of electric automobile three gear line traffic control automatic transmission upshift intervention control method, realizes the electronic of the embodiment of the present invention
The control system that automobile three keeps off line traffic control automatic transmission includes variator 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
Sensor aps, a gear electromagnetic clutch 41, two gear electromagnetic clutch 42, three gear electromagnetic clutch 43, in variator ECU
It has been previously stored a gear in 100 and risen two gear law curve d12, two gear rise three gear law curve d23.
The binding post of one gear electromagnetic clutch solenoid 411 passes through a gear of wire and variator ECU 100
The sub- 100a in control output end is connected;The binding post of two gear electromagnetic clutch solenoids 421 passes through wire and variator electricity
The two gear 100b in control output end of control unit 100 are connected;The binding post of three gear electromagnetic clutch solenoids 431 passes through
Wire is connected with the three gear 100c in control output end of variator ECU 100.
Variator ECU 100 passes through to control a gear electromagnetic clutch solenoid 411, two to keep off electromagnetic clutch electromagnetism
Coil 421, three keeps off energising or the power-off of electromagnetic clutch solenoid 431, thus controlling a gear electromagnetic clutch 41, two gear electricity
Magnet clutch 42, three keeps off joint and the separation of electromagnetic clutch 43.
The sub- 100d in motor rotating speed of target control output end of variator ECU 100 passes through wire and electronic Electrical Control
Unit 200 is connected, and motor ECU 200 is connected with motor 300 by wire, controls motor speed to reach electricity
Motivation rotating speed of target.
The actuating device realizing the electric automobile three gear line traffic control automatic transmission of the embodiment of the present invention includes input shaft 10,
Gear input shaft 11, two gear input shaft 12, gear 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 inputted with gear input gear 31, two gear successively along its gear outer circumferential
Gear 32 often engages;One gear input gear 31, two keeps off input gear 32, input gear 30 and keeps off electromagnetic clutch 41 with one respectively
Partner, the Partner of two gear electromagnetic clutchs 42, the Partner of three gear electromagnetic clutchs 43 connect;One gear electromagnetic clutch 41
Drive end, the drive ends of two gear electromagnetic clutchs 42 are respectively by a gear output shaft 61, output shaft 2nd gear 62 and a gear active
Gear 51, two gear driving gear 52 connect;One gear driving gear 51, two gear driving gear 52 respectively along its gear outer circumferential according to
Secondary with one gear driven gear 71, two gear driven gear 72 often engage;The drive ends of three gear electromagnetic clutchs 43 pass through output shaft 8 with
One gear driven gear 71, two gear driven gear 72 connects.
Further illustrate the electric automobile three gear line traffic control automatic transmission of the embodiment of the present invention with reference to Fig. 1, Fig. 2, Fig. 3
Each forward gear power transmission line.
One gear transmission: variator ECU 100 controls gear electromagnetic clutch 41 energising to engage, two gear electromagnetic clutchs
42nd, three gear electromagnetic clutch 43 power-off separate, and the power of motor 300 output passes to input gear 30 by input shaft 10,
This power is passed to a gear input gear 31 by input gear 30 further, then is transmitted by the gear electromagnetic clutch 41 engaging
To a gear driven gear 71, and then power is transferred to transmission output shaft 8, realizes a gear transmission.
Two gear transmissions: variator ECU 100 controls two gear electromagnetic clutch 42 energisings to engage, a gear electromagnetic clutch
41st, three gear electromagnetic clutch 43 power-off separate, and the power of motor 300 output passes to input gear 30 by input shaft 10,
This power is passed to two gear input gears 32 by input gear 30 further, then is transmitted by the two gear electromagnetic clutchs 42 engaging
To two gear driven gears 72, and then power is transferred to transmission output shaft 8, realizes two gear transmissions.
Three gear transmissions: variator ECU 100 controls three gear electromagnetic clutch 43 energisings to engage, a gear electromagnetic clutch
41st, two gear electromagnetic clutch 42 power-off separate, and the three gear electromagnetic clutchs 43 that the power of transmission input shaft 10 passes through to engage pass
It is handed to output shaft 8, realize three gear transmissions.
Neutral: variator ECU 100 controls a gear electromagnetic clutch 41, two gear electromagnetic clutch 42, three gear electromagnetism
Clutch 43 is in power-off released state, realizes neutral.
The electric automobile three gear line traffic control automatic transmission upshift intervention control method flow chart of the present invention is as shown in Fig. 2 electricity
After motivation 300 starts, electricity on variator ECU 100 and motor ECU 200, electric automobile three gear line traffic control becomes automatically
Fast device upshift intervention control method brings into operation, and this control method comprises the following steps:
Step s1, variator ECU 100 detect d position switch d-sw signal, transmission output speed sensor oss turn
Fast signal n2, the tach signal n of motor speed sensor ess1, the opening amount signal α of accelerator pedal position sensor aps;
Step s2, judge whether to be linked into d gear: when variator ECU 100 detects d position switch d-sw signal and connects, sentence
Break as being linked into d gear, carry out step s3;Otherwise, when variator ECU 100 detects d position switch d-sw signal access failure,
Judge not to be to be linked into d gear, return to step s1;
Step s3, judge whether need by one gear rise two gears: when variator ECU 100 detects transmission output speed
The tach signal n of sensor oss2Meet electric automobile three gear line traffic control with the opening amount signal α of accelerator pedal position sensor aps certainly
In dynamic variator upshift law curve, a gear rises two gear law curve d12On liter catch point when, be judged as need by one gear rise two
Gear, carries out step s4;Otherwise, when variator ECU 100 detects the rotating speed letter of transmission output speed sensor oss
Number n2It is unsatisfactory for electric automobile three gear line traffic control automatic transmission upshift rule with the opening amount signal α of accelerator pedal position sensor aps
In rule curve, a gear rises two gear law curve d12On liter catch point when, be judged as not needing by one gear rise two gears, carry out step s6;
Step s4, a gear rise two gear process control: the transmission output speed that variator ECU 100 passes through to detect passes
The tach signal n of sensor oss2Rise two gear motor rotating speed of target function f with a gear12(n2)=βn2[(z1z11)/(z0z10)-
(z2z21)/(z0z20)]/ [(z1z11)/(z0z10)] determine that a gear rises two gear motor rotating speed of target, motor ECU 200
Control motor speed to reach a gear and rise 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 upshift target revolution speed variation coefficient;
Step s5, judge one gear rise two gear whether terminate: when one gear rise two gear control process motor speed n1More than or equal to one
Gear rises two gear motor rotating speed of target f12(n2) when, it is judged as that a gear rises two gear control process and not yet terminates, return to step s4;
Otherwise, when a gear rises two gear control process motor speed n1Rise two gear motor rotating speed of target f less than a gear12(n2) when, sentence
Break and terminate for a gear liter two gear control process, return to step s1;
Step s6, judge whether need by two gear rise three gears: when variator ECU 100 detects transmission output speed
The tach signal n of sensor oss2Meet electric automobile three gear line traffic control with the opening amount signal α of accelerator pedal position sensor aps certainly
In dynamic variator upshift law curve, two gears rise three gear law curve d23On liter catch point when, be judged as need by two gear rise three
Gear, carries out step s7;Otherwise, when variator ECU 100 detects the rotating speed letter of transmission output speed sensor oss
Number n2It is unsatisfactory for electric automobile three gear line traffic control automatic transmission upshift rule with the opening amount signal α of accelerator pedal position sensor aps
In rule curve, two gears rise three gear law curve d23On liter catch point when, be judged as not needing by two gear rise three gears, return to step
s1;
Step s7, two gears rise three gear process control: the transmission output speed that variator ECU 100 passes through to detect passes
The tach signal n of sensor oss2Rise three gear motor rotating speed of target function f with two gears23(n2)= βn2[ (z2z21)/(z0z20)-
1]/ [(z2z21)/(z0z20)] determining that two gears rise three gear motor rotating speed of target, motor ECU 200 controls motor to turn
Speed reaches two gears and rises three gear motor rotating speed of target, in formula: n2For transmission output shaft 8 rotating speed;z0Tooth for input gear 30
Number; z2The number of teeth for two gear input gears 32;z20The number of teeth for two gear driving gear 52;z21Tooth for two gear driven gears 72
Number;β is upshift target revolution speed variation coefficient;
Step s8, judge two gear rise three gear whether terminate: when two gear rise three gear control process motor speed n1More than or equal to two
Gear rises three gear motor rotating speed of target f23(n2) when, it is judged as that two gears rise three gear control process and not yet terminate, return to step s7;
Otherwise, when two gears rise three gear control process motor speed n1Rise three gear motor rotating speed of target f less than two gears23(n2) when, sentence
Break and terminate for two gear liter three gear control process, return to step s1;
After driver turns off ignition switch, variator ECU 100 and motor ECU 200 power-off, electric automobile three
Gear line traffic control automatic transmission upshift intervention control method terminates to run.
In the present embodiment, upshift target revolution speed variation factor beta is taken as 1.
Further illustrate embodiment of the present invention step s3 with reference to Fig. 3 and judge whether to need by gear liter two gears:
As shown in figure 3, embodiment of the present invention electric automobile three gear line traffic control automatic transmission upshift law curve schematic diagram, d12For
One gear rises two gear law curves;As transmission output speed signal n2Run to d with accelerator opening angle signal α12On curve
A (950,50) point when, variator ECU 100 according to electric automobile three keep off line traffic control automatic transmission upshift rule judge a
Point rises two gear law curve d for a gear12On liter catch point, be judged as needing carrying out a gear rising two gear process control;Otherwise, judge
For not needing to carry out a gear liter two gear process control.
Further illustrate embodiment of the present invention step s6 with reference to Fig. 3 and judge whether to need by two gear liter three gears:
As shown in figure 3, embodiment of the present invention electric automobile three gear line traffic control automatic transmission shift law curve schematic diagram, d23For
Two gears rise three gear law curves;As transmission output speed signal n2Run to d with accelerator opening angle signal α23On curve
B (1950,50) point when, variator ECU 100 according to electric automobile three keep off line traffic control automatic transmission upshift rule judge b
Point rises three gear law curve d for two gears23On liter catch point, be judged to need to carry out two gears rise three gear process control;Otherwise, it is determined that
For not needing to carry out two gears liter three gear process control.
Above in conjunction with accompanying drawing, embodiments of the present invention are explained in detail, 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 three gear line traffic control automatic transmission upshift intervention control method, realizes the electric automobile of this control method
The control systems of three gear line traffic control automatic transmission include variator 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), three gears electromagnetic clutch (43),
It has been previously stored a gear and risen two gear law curve (d in variator ECU (100)12), two gear rise three gear law curves
(d23) it is characterised in that described control method comprises the following steps:
Step 1, variator ECU (100) detection d position switch (d-sw) signal, transmission output speed sensor
(oss) tach signal n2, the tach signal n of motor speed sensor (ess)1, accelerator pedal position sensor (aps)
Opening amount signal α;
Step 2, judge whether to be linked into d gear: when variator ECU (100) detects d position switch (d-sw) signal and connects,
It is judged as being linked into d gear, carry out step 3;Otherwise, do not connect when variator ECU (100) detects d position switch (d-sw) signal
When logical, judge not to be to be linked into d gear, return to step 1;
Step 3, judge whether need by one gear rise two gears: turn when variator ECU (100) detects transmission output shaft
The tach signal n of fast sensor (oss)2Meet electric automobile three gear with the opening amount signal α of accelerator pedal position sensor (aps)
In line traffic control automatic transmission upshift law curve, a gear rises two gear law curve (d12) on liter catch point when, be judged as needing by one
Gear rises two gears, carries out step 4;Otherwise, when variator ECU (100) detects transmission output speed sensor
(oss) tach signal n2It is unsatisfactory for electric automobile three gear line traffic control with the opening amount signal α of accelerator pedal position sensor (aps) certainly
In dynamic variator upshift law curve, a gear rises two gear law curve (d12) on liter catch point when, be judged as not needing by one gear rise
Two gears, carry out step 6;
Step 4, a gear rise two gear process control: variator ECU (100) passes through the transmission output speed detecting
The tach signal n of sensor (oss)2Rise two gear motor rotating speed of target function f with a gear12(n2)=βn2[(z1z11)/(z0z10)-
(z2z21)/(z0z20)]/ [(z1z11)/(z0z10)] determine that a gear rises two gear motor rotating speed of target, motor ECU
(200) control motor speed to reach a gear and rise two gear motor rotating speed of target, in formula: n2Turning for transmission output shaft (8)
Speed;z0The number of teeth for input gear (30);z1The number of teeth for gear input gear (31); z10For gear driving gear (51)
The number of teeth;z11The number of teeth for gear driven gear (71);z2The number of teeth for two gears input gear (32);z20For two gear driving gear
(52) the number of teeth;z21The number of teeth for two gears driven gear (72);β is upshift target revolution speed variation coefficient;
Step 5, judge one gear rise two gear whether terminate: when one gear rise two gear control process motor speed n1More than or equal to a gear
Rise two gear motor rotating speed of target f12(n2) when, it is judged as that a gear rises two gear control process and not yet terminates, return to step 4;No
Then, when a gear rises two gear control process motor speed n1Rise two gear motor rotating speed of target f less than a gear12(n2) when, judge
Rise two gear control process for a gear to terminate, return to step 1;
Step 6, judge whether need by two gear rise three gears: turn when variator ECU (100) detects transmission output shaft
The tach signal n of fast sensor (oss)2Meet electric automobile three gear with the opening amount signal α of accelerator pedal position sensor (aps)
In line traffic control automatic transmission upshift law curve, two gears rise three gear law curve (d23) on liter catch point when, be judged as needing by two
Gear rises three gears, carries out step 7;Otherwise, when variator ECU (100) detects transmission output speed sensor
(oss) tach signal n2It is unsatisfactory for electric automobile three gear line traffic control with the opening amount signal α of accelerator pedal position sensor (aps) certainly
In dynamic variator upshift law curve, two gears rise three gear law curve (d23) on liter catch point when, be judged as not needing by two gear rise
Three gears, return to step 1;
Step 7, two gears rise three gear process control: variator ECU (100) passes through the transmission output speed detecting
The tach signal n of sensor (oss)2Rise three gear motor rotating speed of target function f with two gears23(n2)= βn2[ (z2z21)/
(z0z20)-1]/ [(z2z21)/(z0z20)] determining that two gears rise three gear motor rotating speed of target, motor ECU (200) is controlled
Motor speed processed reaches two gears and rises three gear motor rotating speed of target, in formula: n2For transmission output shaft (8) rotating speed;z0For input
The number of teeth of gear (30); z2The number of teeth for two gears input gear (32);z20The number of teeth for two gear driving gear (52);z21For two
The number of teeth of gear driven gear (72);β is upshift target revolution speed variation coefficient;
Step 8, judge two gear rise three gear whether terminate: when two gear rise three gear control process motor speed n1More than or equal to two gears
Rise three gear motor rotating speed of target f23(n2) when, it is judged as that two gears rise three gear control process and not yet terminate, return to step 7;No
Then, when two gears rise three gear control process motor speed n1Rise three gear motor rotating speed of target f less than two gears23(n2) when, judge
Rise three gear control process for two gears to terminate, return to step 1.
2. electric automobile three as claimed in claim 1 gear line traffic control automatic transmission upshift intervention control method it is characterised in that
Rise in three gear process control in described step 4 one gear liter two gear process control, step 7 two gear, described upshift target revolution speed variation
Factor beta is the fixed value setting, β=0.95~1.05.
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