CN104343956A - Method for controlling starting of varying electric currents of multi-gear wire-controlled automatic speed changer - Google Patents
Method for controlling starting of varying electric currents of multi-gear wire-controlled automatic speed changer Download PDFInfo
- Publication number
- CN104343956A CN104343956A CN201410469656.8A CN201410469656A CN104343956A CN 104343956 A CN104343956 A CN 104343956A CN 201410469656 A CN201410469656 A CN 201410469656A CN 104343956 A CN104343956 A CN 104343956A
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- Prior art keywords
- gear
- magnetic clutch
- vehicle speed
- ecu
- control unit
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Classifications
-
- 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
-
- 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
Abstract
The invention discloses a method for controlling the starting of varying electric currents of a multi-gear wire-controlled automatic speed changer. The method realizes the control for the first-gear starting of the wire-controlled automatic speed changer by setting a vehicle speed value V0 at the end of the starting, setting the shortest electrifying time Tdelta required for eliminating the separation gap of a first-gear electromagnetic clutch, detecting the signal of a D-gear switch and the vehicle speed signal v of a vehicle speed sensor, and controlling the electrifying electric currents of the first-gear electromagnetic clutch by an electric control unit respectively according to the function Ia(t)=I1(0 is smaller than or equal to t, and t is smaller than or equal to Tdelta) of the electrifying electric current of the first-gear electromagnetic clutch at a first stage and the function Ib(v)=alphaI1+betaI1v/v1(0 is smaller than or equal to v, and v is smaller than or equal to v1) of the electrifying electric current of the first-gear electromagnetic clutch at the first stage. The starting control method can satisfy the driving habits of different drivers, prevent an engine from flameout in the starting process, and realize the smooth starting of the wire-controlled automatic speed changer.
Description
Technical field
The present invention relates to a kind of controlling method of automatic transmission, more precisely a kind of time-dependent current starting controlling method of many gear line traffic control automatic transmission.
Background technique
Automatic transmission is widely used in the various vehicles such as automobile, electric vehicle, engineering machinery.Existing automatic transmission mainly contains hydraulic mechanical type automatic transmission (AT), metal band type CVT (continuously variable transmission) (CVT), automatic mechanical transmission (AMT), double-clutch automatic transmission (DCT) four major types.
Above-mentioned four class automatic transmission all adopt electric-controlled hydraulic servomechanism installation, realize shift process and control, and complex structure, cost are high and add and control difficulty and complexity.Especially the actuator of DCT comprises: the oil feeding mechanism be made up of oil hydraulic pump, hydrovalve and accumulator, by hydraulic pressure or motor-driven gear shifting actuating mechanism, by hydraulic pressure or motor-driven clutch operation.These hydraulic controls make speed changer complicated integral structure, cost high and add to control difficulty and complexity.
Along with the extensive use of the progressively ripe and automobile network communication technology of automotive electronic technology, automatic control technology, X-by-wire on Automobile has become the development trend in automobile future; Automobile line traffic control (X-By-Wire) technology replaces machinery and hydraulic system with electric wire and electronic controller exactly, the control action of driver is become electrical signal through sensor, be input to ECU (Electrical Control Unit), produce control signal by ECU (Electrical Control Unit) and drive actuator to carry out action required.X-by-wire on Automobile can reduce the complexity of parts, reduces hydraulic pressure and mechanical transmission, and electric wire moves towards the flexibility of layout simultaneously, expands the free space of Automobile Design.
Be circular layout each forward gear high gear of formula line traffic control automatic transmission of many gears often engages with flywheel inside engaged gear, the high gear that reverses gear often engages with central external gear pump, magnetic clutch controls being separated and joint of each gear high gear and driving gear, and each gear driven gear on transmission countershaft is outputed power by planetary gears; This magnetic clutch keeping off the formula line traffic control automatic transmission that is circular layout adopts line traffic control mode power gear shifting, without skidding and power interruption phenomenon more.
For guaranteeing the gentle start of many gear line traffic control automatic transmission, avoiding the engine misses in starting-up process, adapt to different driver's fast starting or slowly accelerate the driving habitses such as starting, need to control the starting-up process of many gear line traffic control automatic transmission.
Summary of the invention
The object of this invention is to provide a kind of driving habits that driver intention is different with adaptation of can either considering, the time-dependent current starting controlling method of many gears line traffic control automatic transmission of vehicle gentle start can be realized again.A time-dependent current starting controlling method for many gear line traffic control automatic transmission, the control gear realizing many gears line traffic control automatic transmission of this controlling method comprises motor, vehicle speed sensor, D position switch, ECU (Electrical Control Unit), a gear magnetic clutch.
Technological scheme of the present invention is as follows:
After engine start igniting, ECU (Electrical Control Unit) powers on, and the time-dependent current starting controlling method of many gear line traffic control automatic transmission brings into operation, and this controlling method comprises the following steps:
Step 1, ECU (Electrical Control Unit) detect the vehicle speed signal of D position switch signal and vehicle speed sensor
v;
Step 2, judge whether to be linked into D gear: when ECU (Electrical Control Unit) detects that D position switch signal is connected, be judged as that line traffic control automatic transmission is linked into D and keeps off, carry out step 3; Otherwise, when ECU (Electrical Control Unit) detects D position switch signal access failure, be judged as that line traffic control automatic transmission is not linked into D gear, carry out step 1;
Step 3, first stage one keep off magnetic clutch electrical current and control: ECU (Electrical Control Unit) keeps off magnetic clutch electrical current function according to the first stage one
i a (
t)=
i 1 , (
0≤
t≤
t δ ), control the electrical current of a gear magnetic clutch, in formula:
i 1 it is the rating value of the electrical current of a gear magnetic clutch;
Step 4, judge the control procedure endurance
twhether be more than or equal to elimination one and keep off minimum current"on"time needed for magnetic clutch Separation
t δ : when ECU (Electrical Control Unit) detects the control procedure endurance
tbe more than or equal to elimination one and keep off minimum current"on"time needed for magnetic clutch Separation
t δ time, carry out step 5; Otherwise, when ECU (Electrical Control Unit) detects the control procedure endurance
tbe less than elimination one and keep off minimum current"on"time needed for magnetic clutch Separation
t δ time, turn back to step 3;
Step 5, second stage one are kept off magnetic clutch electrical current and are controlled: ECU (Electrical Control Unit) keeps off magnetic clutch electrical current function according to second stage one
i b (
v)=
α I 1 +
β I 1 v/
v 1 , (
0≤
v≤
v 1 ), control the electrical current of a gear magnetic clutch, in formula:
i 1 be the rating value of the electrical current of a gear magnetic clutch 41,
αbe the relative binding intensity index of a gear magnetic clutch,
βcurrent coefficient is increased for the speed of a motor vehicle is relevant;
Step 6, judge the vehicle speed signal of vehicle speed sensor
vwhether be more than or equal to starting end of a period vehicle speed value
v 1: when ECU (Electrical Control Unit) detects the vehicle speed signal of vehicle speed sensor
vbe more than or equal to starting end of a period vehicle speed value
v 1time, starting control procedure terminates; Otherwise, when ECU (Electrical Control Unit) detects the vehicle speed signal of vehicle speed sensor
vbe less than or equal to starting end of a period vehicle speed value
v 0time, turn back to step 5.
In the time-dependent current starting controlling method of above-mentioned many gear line traffic control automatic transmission, the relative binding intensity index of the gear magnetic clutch described in step 5
αa fixed value of setting,
α=0.3 ~ 0.8; The speed of a motor vehicle described in step 5 is relevant increases current coefficient
βa fixed value of setting,
β=0.2 ~ 0.6; Starting end of a period vehicle speed value described in step 6
v 1a fixed value of setting,
v 1=5 ~ 10km/h.
Compared with prior art, its advantage is in the present invention:
(1) the time-dependent current starting controlling method of many gear line traffic control automatic transmission of the present invention, the Separation of a gear magnetic clutch can be eliminated the first stage in starting-up process fast, and the electrical current of a gear magnetic clutch is progressively increased in second stage, make the smooth-going increase of a gear magnetic clutch carry-over moment, avoid engine misses in starting-up process, achieve the gentle start of vehicle;
(2) the time-dependent current starting controlling method of many gear line traffic control automatic transmission of the present invention, in starting-up process, second stage one keeps off the electrical current function of magnetic clutch
i b (
v) be the speed of a motor vehicle
vfunction, thus the size of electrical current of a gear magnetic clutch changes with the change of the speed of a motor vehicle, and again because the change of the speed of a motor vehicle is controlled by driver, custom is accelerated in the starting that therefore this controlling method can adapt to different driver.
Accompanying drawing explanation
Fig. 1 is a gear of many gears line traffic control automatic transmission of the embodiment of the present invention and the control gear that reverses gear and transmission structures schematic diagram.
Fig. 2 is a gear and two control gear kept off and the transmission structures schematic diagram of many gears line traffic control automatic transmission of the embodiment of the present invention.
Fig. 3 is three gears and four control gear kept off and the transmission structures schematic diagram of many gears line traffic control automatic transmission of the embodiment of the present invention.
Fig. 4 is the time-dependent current starting controlling method flow chart of many gears line traffic control automatic transmission of the embodiment of the present invention.
Fig. 5 is speed of a motor vehicle change procedure and a gear magnetic clutch electrical current change curve schematic diagram of the time-dependent current starting controlling method of many gears line traffic control automatic transmission of the embodiment of the present invention.
In figure:, 1. transmission input shaft, 2. housing, 200. motor, 24. transmission countershafts, 25. transmission output shafts, 3. flywheel, 3a. power intake, 3b. clutch end, 31. flywheel inside engaged gears, 32. central external gear pumps, 33. intermediate gears, 41. 1 gear magnetic clutchs, 411. one gear magnetic clutch slip rings, 412. one gear magnetic clutch brushes, 42. 2 gear magnetic clutchs, 421. two gear magnetic clutch slip rings, 422. two gear magnetic clutch brushes, 43. 3 gear magnetic clutchs, 431. three gear magnetic clutch slip rings, 432. three gear magnetic clutch brushes, 44. 4 gear magnetic clutchs, 441. four gear magnetic clutch slip rings, 442. four gear magnetic clutch brushes, 4R. reverses gear magnetic clutch, 4R1. reverses gear magnetic clutch slip ring, 4R2. reverses gear magnetic clutch brush, 4Z1. mono-keeps off main shaft, 4Z2. bis-keeps off main shaft, 4Z3. tri-keeps off main shaft, 4Z4. tetra-keeps off main shaft, 4ZR. reverses gear main shaft, 51. 1 gear high gears, 52. 2 gear high gears, 53. 3 gear high gears, 54. 4 gear high gears, 5R. reverses gear high gear, 61. 1 gear driving gears, 62. 2 gear driving gears, 63. 3 gear driving gears, 64. 4 gear driving gears, 6R. reverses gear driving gear, 71. 1 gear driven gears, 72. 2 gear driven gears, 73. 3 gear driven gears, 74. 4 gear driven gears, 7R. reverses gear driven gear, 91. sun gears, 92. planetary pinions, 93. gear rings, 94. planet carriers, 100. ECU (Electrical Control Unit), 100a. mono-keeps off control output end, 100b. bis-keeps off control output end, 100c. tri-keeps off control output end, 100d. tetra-keeps off control output end, 100r. reverses gear control output end, VSS. vehicle speed sensor, D-SW.D position switch.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be described in detail technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments; Based on the embodiment in the present invention, those of ordinary skill in the art belong to the scope of protection of the invention not making the every other embodiment obtained under creative work prerequisite.
A time-dependent current starting controlling method for many gear line traffic control automatic transmission, the control gear realizing many gears line traffic control automatic transmission of this controlling method comprises motor 200, vehicle speed sensor VSS, D position switch D-SW, ECU (Electrical Control Unit) 100, gear magnetic clutch 41.
Housing 2 is installed with a gear magnetic clutch brush 412, two gear magnetic clutch brushes 422, three gear magnetic clutch brushes 432, four gear magnetic clutch brushes 442, reverse gear magnetic clutch brush 4R2, one gear magnetic clutch brush 412, two gear magnetic clutch brushes 422, three gear magnetic clutch brushes 432, four gear magnetic clutch brushes 442, the magnetic clutch brush 4R2 that reverses gear keeps off magnetic clutch slip ring 411 with one respectively, two gear magnetic clutch slip rings 421, three gear magnetic clutch slip rings 431, four gear magnetic clutch slip rings 441, the magnetic clutch slip ring 4R1 that reverses gear keeps sliding contact, the tenminal block of one gear magnetic clutch brush 412, the tenminal block of two gear magnetic clutch brushes 422, the tenminal block of three gear magnetic clutch brushes 432, the tenminal block of four gear magnetic clutch brushes 442, the tenminal block of magnetic clutch brush 4R2 of reversing gear keeps off the sub-100a in control output end respectively by one of wire and ECU (Electrical Control Unit) 100, the two gear 100b in control output end, the three gear 100c in control output end, the four gear 100d in control output end, the sub-100r in control output end that reverses gear is connected.
ECU (Electrical Control Unit) 100 is kept off magnetic clutch brush 412, two by control one and is kept off magnetic clutch brush 422, three and keep off magnetic clutch brush 432, four and keep off magnetic clutch brush 442, the energising of the magnetic clutch brush 4R2 that reverses gear or power-off, control a gear magnetic clutch 41, two keep off magnetic clutch 42, three keep off magnetic clutch 43, four keep off magnetic clutch 44, the magnetic clutch 4R that reverses gear joint be separated; ECU (Electrical Control Unit) 100 is kept off magnetic clutch brush 412, two by control one and is kept off magnetic clutch brush 422, three gear magnetic clutch brush 432, four gear magnetic clutch brush 442, the reverse gear power-on voltage of magnetic clutch brush 4R2 or the size of electric current, controls joint and the speed be separated that a gear magnetic clutch 41, two keeps off magnetic clutch 42, three gear magnetic clutch 43, four gear magnetic clutch 44, the magnetic clutch 4R that reverses gear.
The transmission device realizing many gears line traffic control automatic transmission of the embodiment of the present invention comprises transmission input shaft 1, flywheel 3, transmission countershaft 24, transmission output shaft 25, housing 2; One end of flywheel 3 is power intake 3a, and power intake 3a is connected with one end of transmission input shaft 1; The other end of flywheel 3 is clutch end 3b, and clutch end 3b is provided with flywheel inside engaged gear 31 and central external gear pump 32; Flywheel inside engaged gear 31 is positioned at the outside of central external gear pump 32; In the transmission countershaft 24 has been fixedly connected sequentially driven gear 7R, four gear driven gears 74, three gear driven gears 73, two gear driven gears 72, the gear driven gears 71 of reversing gear, and one end away from flywheel 3 of countershaft 24 is also fixedly connected with sun gear 91 in the transmission.
Flywheel inside engaged gear 31 keeps off high gear 52, three and keeps off high gear 53, four along keeping off high gear 51, two its gear week to the inside successively with one and keep off high gear 54 and often engage; Each forward gear high gear and the empty set intermediate gear 33 in the transmission on countershaft 24 often engages; Central authorities' external gear pump 32 often engages with the high gear 5R that reverses gear.
One gear high gear 51, two keeps off high gear 52, three and keeps off high gear 53, four and keep off that Partner, three that high gear 54 keeps off magnetic clutch 41 respectively Partner, two with one keeps off magnetic clutch 42 keeps off the Partner of magnetic clutch 43, four Partner keeping off magnetic clutch 44 are connected; The drive end of one gear magnetic clutch 41, the drive end of two gear magnetic clutchs 42, the drive end of three gear magnetic clutchs 43, the drive end of four gear magnetic clutchs 44 keep off driving gear 61, two respectively by a gear main shaft 4Z1, two gear main shaft 4Z2, three gear main shaft 4Z3, four gear main shaft 4Z4 and and keep off driving gear 62, three and keep off driving gear 63, four and keep off driving gear 64 and be connected; One gear driving gear 61, two keeps off driving gear 62, three and keeps off driving gear 63, four and keep off driving gear 64 and keep off driven gear 71, two respectively with one and keep off driven gear 72, three and keep off driven gear 73, four and keep off driven gear 74 and often engage.
The high gear 5R that reverses gear is connected with the Partner of the magnetic clutch 4R that reverses gear; The drive end of magnetic clutch 4R of reversing gear is connected with the driving gear 6R that reverses gear; The driving gear 6R that reverses gear often is engaged with the driven gear 7R that reverses gear by the main shaft 4ZR that reverses gear.
Sun gear 91 often engages with planetary pinion 92, planetary pinion 92 also often engages with gear ring 93, planetary pinion 92 is rolled by its center bearing bore and is arranged on planet carrier 94, planet carrier 94 is fixed on case of transmission 2, gear ring 93 is by spline joint one end at transmission output shaft 25, and the other end of transmission output shaft 25 is as transmission power output terminal.
The each forward gear further illustrating many gears line traffic control automatic transmission of the embodiment of the present invention below in conjunction with Fig. 1, Fig. 2, Fig. 3 and the power transmission line reversed gear.
One gear transmission: ECU (Electrical Control Unit) 100 controls gear magnetic clutch 41 energising and engages, all the other magnetic clutch power-off are separated, the moment of torsion of transmission input shaft 1 passes to a gear high gear 51 by flywheel inside engaged gear 31, again by the gear magnetic clutch 41 that engages by the engagement of a gear driving gear 61 and a gear driven gear 71 by transmission of power to sun gear 91, export transmission output shaft 25 to finally by the spline on gear ring 93, realize a gear transmission.
Two gear transmissions: ECU (Electrical Control Unit) 100 controls two gear magnetic clutchs 42 energisings and engages, all the other magnetic clutch power-off are separated, the moment of torsion of transmission input shaft 1 passes to two gear high gears 52 by flywheel inside engaged gear 31, again by the two gear magnetic clutchs 42 that engage by the engagement of two gear driving gears 62 and two gear driven gears 72 by transmission of power to sun gear 91, export transmission output shaft 25 to finally by the spline on gear ring 93, realize two gear transmissions.
Three gear transmissions: ECU (Electrical Control Unit) 100 controls three gear magnetic clutchs 43 energisings and engages, all the other magnetic clutch power-off are separated, the moment of torsion of transmission input shaft 1 passes to three gear high gears 53 by flywheel inside engaged gear 31, again by the three gear magnetic clutchs 43 that engage by the engagement of three gear driving gears 63 and three gear driven gears 73 by transmission of power to sun gear 91, export transmission output shaft 25 to finally by the spline on gear ring 93, realize three gear transmissions.
Four gear transmissions: ECU (Electrical Control Unit) 100 controls four gear magnetic clutchs 44 energisings and engages, all the other magnetic clutch power-off are separated, the moment of torsion of transmission input shaft 1 passes to four gear high gears 54 by flywheel inside engaged gear 31, again by the four gear magnetic clutchs 44 that engage by the engagement of four gear driving gears 64 and four gear driven gears 74 by transmission of power to sun gear 91, export transmission output shaft 25 to finally by the spline on gear ring 93, realize four gear transmissions.
Reverse gear: ECU (Electrical Control Unit) 100 controls the magnetic clutch 4R energising joint that reverses gear, all the other magnetic clutch power-off are separated, the moment of torsion of transmission input shaft 1 passes to by central external gear pump 32 the high gear 5R that reverses gear, again by the magnetic clutch 4R that reverses gear that engages by reverse gear driving gear 6R and the engagement of driven gear 7R of reversing gear by transmission of power to sun gear 91, export transmission output shaft 25 to finally by the spline on gear ring 93, realize reverse gear.
Neutral: ECU (Electrical Control Unit) 100 controls gear magnetic clutch 41, two gear magnetic clutch 42, three gear magnetic clutch 43, a four gear magnetic clutch 44, the magnetic clutch 4R that reverses gear all is in power-off separated state, realizes neutral.
The time-dependent current starting controlling method flow chart of many gear line traffic control automatic transmission of the present invention as shown in Figure 4, after motor 200 starting ignition, ECU (Electrical Control Unit) 100 powers on, and the time-dependent current starting controlling method of many gear line traffic control automatic transmission brings into operation, and this controlling method comprises the following steps:
Step S1, ECU (Electrical Control Unit) 100 detect the vehicle speed signal of D position switch D-SW signal and vehicle speed sensor VSS
v;
Step S2, judge whether to be linked into D gear: when ECU (Electrical Control Unit) 100 detects that D position switch D-SW connects, be judged as that line traffic control automatic transmission is linked into D and keeps off, carry out step S3; Otherwise, when ECU (Electrical Control Unit) 100 detects D position switch D-SW access failure, be judged as that line traffic control automatic transmission is not linked into D gear, carry out step S1;
Step S3, first stage one keep off magnetic clutch 41 electrical current and control: ECU (Electrical Control Unit) 100 keeps off magnetic clutch 41 electrical current function according to the first stage one
i a (
t)=
i 1 , (
0≤
t≤
t δ ), control the electrical current of a gear magnetic clutch 41, in formula:
i 1 it is the rating value of the electrical current of a gear magnetic clutch 41;
Step S4, judge the control procedure endurance
twhether be more than or equal to elimination one and keep off minimum current"on"time needed for magnetic clutch 41 Separation
t δ : when ECU (Electrical Control Unit) 100 detects the control procedure endurance
tbe more than or equal to elimination one and keep off minimum current"on"time needed for magnetic clutch 41 Separation
t δ time, carry out step S5; Otherwise, when ECU (Electrical Control Unit) 100 detects the control procedure endurance
tbe less than elimination one and keep off minimum current"on"time needed for magnetic clutch 41 Separation
t δ time, turn back to step S3;
Step S5, second stage one are kept off magnetic clutch 41 electrical current and are controlled: ECU (Electrical Control Unit) 100 keeps off magnetic clutch 41 electrical current function according to second stage one
i b (
v)=
α I 1 +
β I 1 v/
v 1 , (
0≤
v≤
v 1 ), control the electrical current of a gear magnetic clutch 41, in formula:
i 1 be the rating value of the electrical current of a gear magnetic clutch 41,
αbe the relative binding intensity index of a gear magnetic clutch 41,
βcurrent coefficient is increased for the speed of a motor vehicle is relevant;
Step S6, judge the vehicle speed signal of vehicle speed sensor VSS
vwhether be more than or equal to starting end of a period vehicle speed value
v 1: when ECU (Electrical Control Unit) 100 detects the vehicle speed signal of vehicle speed sensor VSS
vbe more than or equal to starting end of a period vehicle speed value
v 1time, starting control procedure terminates; Otherwise, when ECU (Electrical Control Unit) 100 detects the vehicle speed signal of vehicle speed sensor VSS
vbe less than or equal to starting end of a period vehicle speed value
v 0time, turn back to step S5.
In the present embodiment, the relative binding intensity index of a gear magnetic clutch 41
αbe taken as 0.6; The speed of a motor vehicle is relevant increases current coefficient
βbe taken as 0.4; Eliminate minimum current"on"time needed for gear magnetic clutch 41 Separation
t δ be taken as 250ms; Starting end of a period vehicle speed value
v 1be taken as 7km/h.
Below in conjunction with Fig. 5 further illustrate the embodiment of the present invention step S3 first stage one keep off magnetic clutch 41 electrical current control and step S5 second stage one keep off magnetic clutch 41 electrical current control procedure:
As shown in Figure 5, the speed of a motor vehicle change procedure of the time-dependent current starting controlling method of the embodiment of the present invention many gears line traffic control automatic transmission and a gear magnetic clutch circulation energising pulse width variations curve synoptic diagram, when the control procedure endurance
tbe less than elimination one and keep off minimum current"on"time needed for magnetic clutch 41 Separation
t δ time, ECU (Electrical Control Unit) 100 keeps off magnetic clutch 41 electrical current function according to the first stage one
i a (
t)=
i 1 control the electrical current of a gear magnetic clutch 41, this one-phase is for eliminating the Separation of a gear magnetic clutch 41; When the control procedure endurance
tbe more than or equal to elimination one and keep off minimum current"on"time needed for magnetic clutch 41 Separation
t δ time, ECU (Electrical Control Unit) 100 keeps off magnetic clutch 41 electrical current function according to second stage one
i b (
v)=
α I 1 +
β I 1 v/
v 1 =0.6
i 1 + 0.4
i 1 v/ 7 (ms) control the electrical current of a gear magnetic clutch 41, until the vehicle speed signal of vehicle speed sensor VSS
vbe more than or equal to starting end of a period vehicle speed value
v 1time, starting control procedure terminates.
By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned mode of execution, in the ken that art those of ordinary skill possesses, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (3)
1. one kind, keep off the time-dependent current starting controlling method of line traffic control automatic transmission more, the control gear realizing many gears line traffic control automatic transmission of this starting controlling method comprises motor (200), vehicle speed sensor (VSS), D position switch (D-SW), ECU (Electrical Control Unit) (100), gear magnetic clutch (41), it is characterized in that, described controlling method comprises the following steps:
Step 1, ECU (Electrical Control Unit) (100) detect the vehicle speed signal of D position switch (D-SW) signal and vehicle speed sensor (VSS)
v;
Step 2, judge whether to be linked into D gear: when ECU (Electrical Control Unit) (100) detects that D position switch (D-SW) signal is connected, be judged as that line traffic control automatic transmission is linked into D and keeps off, carry out step 3; Otherwise, when ECU (Electrical Control Unit) (100) detects D position switch (D-SW) signal access failure, be judged as that line traffic control automatic transmission is not linked into D gear, carry out step 1;
Step 3, first stage one keep off magnetic clutch (41) electrical current and control: ECU (Electrical Control Unit) (100) keeps off magnetic clutch (41) electrical current function according to the first stage one
i a (
t)=
i 1 , (
0≤
t≤
t δ ), control the electrical current of gear magnetic clutch (41), in formula:
i 1 it is the rating value of the electrical current of a gear magnetic clutch (41);
Step 4, judge the control procedure endurance
twhether be more than or equal to elimination one and keep off minimum current"on"time needed for magnetic clutch (41) Separation
t δ : when ECU (Electrical Control Unit) (100) detects the control procedure endurance
tbe more than or equal to elimination one and keep off minimum current"on"time needed for magnetic clutch (41) Separation
t δ time, carry out step 5; Otherwise, when ECU (Electrical Control Unit) (100) detects the control procedure endurance
tbe less than elimination one and keep off minimum current"on"time needed for magnetic clutch (41) Separation
t δ time, turn back to step 3;
Step 5, second stage one are kept off magnetic clutch (41) electrical current and are controlled: ECU (Electrical Control Unit) (100) keeps off magnetic clutch (41) electrical current function according to second stage one
i b (
v)=
α I 1 +
β I 1 v/
v 1 , (
0≤
v≤
v 1 ), control the electrical current of gear magnetic clutch (41), in formula:
i 1 be the rating value of the electrical current of a gear magnetic clutch (41),
αbe the relative binding intensity index of a gear magnetic clutch (41),
βcurrent coefficient is increased for the speed of a motor vehicle is relevant;
Step 6, judge the vehicle speed signal of vehicle speed sensor (VSS)
vwhether be more than or equal to starting end of a period vehicle speed value
v 1: when ECU (Electrical Control Unit) (100) detects the vehicle speed signal of vehicle speed sensor (VSS)
vbe more than or equal to starting end of a period vehicle speed value
v 1time, starting control procedure terminates; Otherwise, when ECU (Electrical Control Unit) (100) detects the vehicle speed signal of vehicle speed sensor (VSS)
vbe less than or equal to starting end of a period vehicle speed value
v 0time, turn back to step 5.
2. the time-dependent current starting controlling method of the many gears line traffic control automatic transmission as described in right 1, it is characterized in that, keep off in the control of magnetic clutch (41) electrical current in described step 5 second stage one, the relative binding intensity index of described gear magnetic clutch (41)
αa fixed value of setting,
α=0.3 ~ 0.8; The described speed of a motor vehicle is relevant increases current coefficient
βa fixed value of setting,
β=0.2 ~ 0.6.
3. the time-dependent current starting controlling method of the many gears line traffic control automatic transmission as described in right 1, is characterized in that, judge the vehicle speed signal of vehicle speed sensor (VSS) in described step 6
vwhether be more than or equal to starting end of a period vehicle speed value
v 1in, described starting end of a period vehicle speed value
v 1a fixed value of setting,
v 1=5 ~ 10km/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410469656.8A CN104343956B (en) | 2014-09-15 | 2014-09-15 | The time-dependent current starting control method of many gear line traffic control automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410469656.8A CN104343956B (en) | 2014-09-15 | 2014-09-15 | The time-dependent current starting control method of many gear line traffic control automatic transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104343956A true CN104343956A (en) | 2015-02-11 |
| CN104343956B CN104343956B (en) | 2016-08-24 |
Family
ID=52500184
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410469656.8A Active CN104343956B (en) | 2014-09-15 | 2014-09-15 | The time-dependent current starting control method of many gear line traffic control automatic transmission |
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| CN104343956B (en) | 2016-08-24 |
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