CN104315131A - Control method for high-transmission-ratio spaced shifting of tandem type electric transmission vehicle - Google Patents
Control method for high-transmission-ratio spaced shifting of tandem type electric transmission vehicle Download PDFInfo
- Publication number
- CN104315131A CN104315131A CN201410488341.8A CN201410488341A CN104315131A CN 104315131 A CN104315131 A CN 104315131A CN 201410488341 A CN201410488341 A CN 201410488341A CN 104315131 A CN104315131 A CN 104315131A
- Authority
- CN
- China
- Prior art keywords
- gear
- rotating speed
- speed
- clutch
- driven vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/0217—Selector apparatus with electric switches or sensors not for gear or range selection, e.g. for controlling auxiliary devices
-
- 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
- F16H2061/326—Actuators for range selection, i.e. actuators for controlling the range selector or the manual range valve in the transmission
-
- 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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/0021—Transmissions for multiple ratios specially adapted for electric vehicles
Abstract
The invention relates to a control method for a high-transmission-ratio spaced shifting of a tandem type electric transmission vehicle. The method comprises an upshifting control process and a downshifting control process, during upshifting, a transmission comprehensive controller sends a separation command to a control valve of a brake of a speed change mechanism; the rotational speed of a planet carrier of the speed change mechanism and the rotational speed of a motor are obtained, so that a speed difference of an active edge and a passive edge of a clutch is obtained; and a rotational speed regulating command is sent to a motor controller, the speed difference is reduced, and when the speed difference is not greater than a limit value, the clutch is jointed; during downshifting, the transmission comprehensive controller sends the rotational speed regulating command to the motor controller, so that the rotational speed is lowered to about a shifting point, and the transmission comprehensive controller sends the separation command to the control valve of the clutch of the speed change mechanism; the rotational speed of the planet carrier of the speed change mechanism, the rotational speed of the motor and the rotational speed of a gear ring of the speed change mechanism are determined to obtain the speed difference of the active edge and the passive edge of the brake; the rotational speed regulating command is sent to the motor controller, the rotating speed difference is reduced, and when the rotating speed difference is not greater than a limit value, the clutch is jointed. The method covers a needed vehicle speed range, and satisfies the requirement of the largest output torque of the vehicle.
Description
Technical field:
The present invention relates to a kind of every shift control method, more specifically relate to a kind of big speed ratio interval shift control method for serial electric driven vehicle.
Background technique:
In field of vehicle control, utilize motor speed-regulating can realize the stepless change of electric vehicle straight, vehicle driving-cycle is complicated, although the speed range of motor is larger, the vehicle speed range of needs can be covered, but the requirement of vehicle maximum output torque cannot be met.Therefore, need the planet speed change mechanism that at least two gears are set in electric actuator, to meet the demand of output speed and torque simultaneously.Consider the weak magnetic ratio of motor, gear two grades of ratio step are usually comparatively large, are generally all greater than between conventional truck gear than the requirement being less than 1.7 ~ 1.8.Usually, top gear and the larger bottom gear of a velocity ratio that a velocity ratio is 1 are set.
Because the ratio step between two grades is larger, speed discrepancy between the passive limit of shift control part master is very large, causes shift process unit friction work to increase, thus makes the temperature rise of operator friction plate very large, easy generation ablation, controls so need to carry out the gearshift of big speed ratio interval.Therefore a kind of big speed ratio interval shift control method for serial electric driven vehicle is proposed, to overcome the problems referred to above.
Summary of the invention:
The object of this invention is to provide a kind of big speed ratio interval shift control method for serial electric driven vehicle, the method can cover the vehicle speed range of needs, and meets the requirement of vehicle maximum output torque.
For achieving the above object, the present invention by the following technical solutions: a kind of big speed ratio interval shift control method for serial electric driven vehicle, described method by serial electric driven vehicle transmission system realize; Described method comprises upshift control procedure and downshift control procedure; The transmission system integrated controller TCU that described serial electric driven vehicle transmission system comprises judges it is upshift control procedure or downshift control procedure according to pilot control signal.
A kind of big speed ratio interval shift control method for serial electric driven vehicle provided by the invention, is characterized in that: described upshift control procedure comprises the following steps:
(1-1) break separation command is sent;
(1-2) the rotating speed n of gear planet carrier is obtained
bj;
(1-3) the rotating speed n of gear sun gear is obtained
bt;
(1-4) gear ring rotating speed n is determined
bq;
(1-5) judge whether clutch tension side rotating speed limit passive with it speed discrepancy absolute value of gear is not more than limit value Δ n
rise;
If (1-6) described absolute value is greater than limit value Δ n
rise, then send clutch engagement command, complete upshift;
If (1-7) described absolute value is less than or equal to limit value Δ n
rise, then reduce clutch tension side rotating speed and passive limit rotating speed difference, return described step (1-2), carry out next round and calculate and judge.
A kind of big speed ratio interval shift control method for serial electric driven vehicle provided by the invention, described downshift control procedure comprises the following steps:
(2-1) motor speed n is regulated
m;
(2-2) clutch separation instruction is sent;
(2-3) the rotating speed n of gear planet carrier is obtained
bj;
(2-4) the rotating speed n of gear sun gear is obtained
bt;
(2-5) the rotating speed n of gear ring is determined
bq;
(2-6) judge whether break tension side rotating speed and the passive limit speed discrepancy absolute value of gear are not more than limit value Δ n
down;
If (2-7) condition is set up, then send break engagement command, complete downshift;
If (2-8) condition is false, reduces break tension side rotating speed and passive limit rotating speed difference, return described step (2-3), carry out next round and calculate and judge.
Another preferred a kind of big speed ratio interval shift control method for serial electric driven vehicle provided by the invention, the instruction in described step (1-1) is sent to the control valve of the break of gear by transmission system integrated controller TCU; Instruction in described step (2-2) is sent to the control valve of the clutch of gear by transmission system integrated controller TCU.
A preferred a kind of big speed ratio interval shift control method for serial electric driven vehicle more provided by the invention, the motor speed n in described step (2-1)
mregulated by transmission system integrated controller TCU and determined by following formula:
n
m＝n
max/i
b1
Wherein, n
maxfor motor maximum (top) speed, i
b1it is a gear velocity ratio.
Another preferably a kind of big speed ratio interval shift control method for serial electric driven vehicle provided by the invention, the rotating speed n of the gear sun gear in described step (1-3) and step (2-4)
btby obtaining the rotating speed n of motor
mdetermine, wherein n
bt=n
m.
The big speed ratio interval shift control method of another preferred a kind of serial electric driven vehicle provided by the invention, the gear ring rotating speed n in described step (1-4) and step (2-5)
bqaccording to the rotating speed n of gear planet carrier
bjwith the rotating speed n of gear sun gear
btdetermine:
n
bq＝[(1+k
b)n
bj-n
bt]/k
b
Wherein, k
bfor gear Parameter of Planet Bars.
The big speed ratio interval shift control method of another preferred a kind of serial electric driven vehicle provided by the invention, clutch tension side rotating speed limit passive with it speed discrepancy absolute value of the gear in described step (1-5) is the speed discrepancy absolute value of described gear ring rotating speed and gear sun gear; The break tension side rotating speed of the gear in described step (2-6) and passive limit speed discrepancy absolute value are described gear ring rotating speed absolute value.
Another preferably a kind of big speed ratio interval shift control method for serial electric driven vehicle provided by the invention, the instruction of described step (1-6) sends to the clutch control valve of gear; Instruction in described step (2-7) sends to the brake control valve of gear.
Another preferably a kind of big speed ratio interval shift control method for serial electric driven vehicle provided by the invention, the clutch tension side rotating speed in described step (1-7) and passive limit rotating speed difference are by regulating the rotating speed n of motor
m=n
bjreduce; Break tension side rotating speed in described step (2-8) and passive limit rotating speed difference are by regulating the rotating speed n of motor
m=i
b1n
bjreduce.
With immediate prior art ratio, the invention provides technological scheme and there is following excellent effect
1, the present invention can cover the vehicle speed range of needs, and meets the requirement of vehicle maximum output torque;
2, the present invention avoids the temperature rise of operator friction plate very large, and ablation is less likely to occur;
3, the present invention can ensure that vehicle travels and driver safety;
4, the present invention can meet complicated vehicle driving-cycle;
5, the present invention reduces break (or clutch) speed discrepancy between driving link and driven member, changes to the gear of expectation smoothly.
Accompanying drawing explanation
Fig. 1 is serial electric driven vehicle drive system structure schematic diagram;
Fig. 2 is controlling method flow chart of the present invention;
Wherein, 1-drive system controller TCU, 2-motor, 3-gear, 4-sun gear, 5-planet carrier, 6-gear ring, 7-planetary gear set, 8-engaging clutch, 9-disengage brake.
Embodiment
Below in conjunction with embodiment, the invention will be described in further detail.
Embodiment 1:
As shown in Figure 1-2, the invention of this example is used for the big speed ratio interval shift control method of serial electric driven vehicle, and described method is realized by serial electric driven vehicle transmission system; Described method comprises upshift control procedure and downshift control procedure.
As shown in Figure 2, in step sl, the transmission system integrated controller (TCU) that serial electric driven vehicle transmission system comprises judges it is upshift control procedure or downshift control procedure according to pilot control signal.
If upshift, then enter step S2, the step of described upshift control procedure comprises: transmission system integrated controller (TCU) sends break separation command to the control valve of the break of gear 3: CH=0.Then enter step S3, transmission system integrated controller (TCU) obtains the rotating speed n of the planet carrier 5 of gear 3
bj.In step s 4 which, transmission system integrated controller (TCU) obtains the rotating speed n of motor 2
m, obtain the rotating speed n of the sun gear 4 of gear 3
bt: n
bt=n
m.In step s 5, the rotating speed n of gear ring 6 is calculated according to the planet carrier 5 of gear 3 and the rotating speed of sun gear 4
bq, formula is: n
bq=[(1+k
b) n
bj-n
bt]/k
b, k
bfor the Parameter of Planet Bars of gear 3.Step S6 judges whether the clutch master passive limit speed discrepancy absolute value (i.e. gear ring rotating speed and sun gear speed discrepancy absolute value) of gear 3 is not more than limit value Δ n
rise, that is: | n
bt-n
bq|≤Δ n
rise.If condition is set up, then enter step S7, transmission system integrated controller (TCU) sends clutch engagement command to the clutch control valve of gear 3: CL=1, completes upshift; If condition is false, then enter step S8, transmission system integrated controller (TCU) sends rotational speed regulation instruction to electric machine controller: n
m=n
bj, to reduce clutch master passive limit speed discrepancy, then return step S3, carry out next round and calculate and judge.
If downshift, then enter step S9, the step of described downshift control procedure comprises: transmission system integrated controller (TCU) first sends rotational speed regulation instruction to motor 2: n
m=n
max/ i
b1, n
maxfor motor 2 maximum (top) speed, i
b1be a gear velocity ratio, make the speed of a motor vehicle be adjusted to shifting points.In step slo, transmission system integrated controller (TCU) sends clutch separation instruction to the control valve of the clutch of gear 3: CL=0.In step s 11, transmission system integrated controller (TCU) obtains the rotating speed n of the planet carrier 5 of gear 3
bj.In step s 12, transmission system integrated controller (TCU) obtains the rotating speed n of motor 2
m, obtain the rotating speed n of the sun gear 4 of gear 3
bt: n
bt=n
m.In step s 13, the rotating speed n of gear ring 6 is calculated according to the planet carrier 5 of gear 3 and the rotating speed of sun gear 4
bq, formula is: n
bq=[(1+k
b) n
bj-n
bt]/k
b, k
bfor the Parameter of Planet Bars of gear 3.Step S14 judges whether break master passive limit speed discrepancy absolute value (i.e. gear ring rotating speed absolute value) of gear 3 is not more than limit value Δ n
down, that is: | n
bq|≤Δ n
down.If condition is set up, then enter step S15, transmission system integrated controller (TCU) sends break engagement command to the brake control valve of gear 3: CH=1, completes downshift.If condition is false, then enter step S16, transmission system integrated controller (TCU) sends rotational speed regulation instruction to electric machine controller: n
m=i
b1n
bj, to reduce break master passive limit speed discrepancy, then return step S11, carry out next round and calculate and judge.
Described serial electric driven vehicle transmission system as shown in Figure 1, the motor 2 comprise drive system controller TCU1, being electrically connected with described drive system controller TCU1 and the gear 3 be mechanically connected with described motor 2; The planet carrier 5 that described gear comprises sun gear 4 and is mechanically connected with described sun gear 4; The two ends of described planet carrier 5 are respectively mechanically connected planetary gear set 7, gear ring 6 and engagement brake 9 successively; The holdback clutch 8 of two mechanical connections is mechanically connected between two engagement brake 9.
Described drive system controller TCU1 sends rotating speed control command to motor 2; The power that motor 2 exports is delivered to wheel through gear 3.
Described engagement brake 9, holdback clutch 8 and gear 3 are in a gear; Described engaging clutch 8, disengage brake 9 and gear 3 are in two gears and namely directly keep off.
Finally should be noted that: above embodiment is only in order to illustrate that technological scheme of the present invention is not intended to limit; although those of ordinary skill in the field are to be understood that with reference to above-described embodiment: still can modify to the specific embodiment of the present invention or equivalent replacement; these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, are all applying within the claims of the present invention awaited the reply.
Claims (10)
1., for a big speed ratio interval shift control method for serial electric driven vehicle, described method is realized by serial electric driven vehicle transmission system; It is characterized in that: described method comprises upshift control procedure and downshift control procedure; The transmission system integrated controller TCU that described serial electric driven vehicle transmission system comprises judges it is upshift control procedure or downshift control procedure according to pilot control signal.
2. a kind of big speed ratio interval shift control method for serial electric driven vehicle as claimed in claim 1, is characterized in that: described upshift control procedure comprises the following steps:
(1-1) break separation command is sent;
(1-2) the rotating speed n of gear planet carrier is obtained
bj;
(1-3) the rotating speed n of gear sun gear is obtained
bt;
(1-4) gear ring rotating speed n is determined
bq;
(1-5) judge whether clutch tension side rotating speed limit passive with it speed discrepancy absolute value of gear is not more than limit value Δ n
rise;
If (1-6) described absolute value is greater than limit value Δ n
rise, then send clutch engagement command, complete upshift;
If (1-7) described absolute value is less than or equal to limit value Δ n
rise, then reduce clutch tension side rotating speed and passive limit rotating speed difference, return described step (1-2), carry out next round and calculate and judge.
3. a kind of big speed ratio interval shift control method for serial electric driven vehicle as claimed in claim 2, is characterized in that: described downshift control procedure comprises the following steps:
(2-1) motor speed n is regulated
m;
(2-2) clutch separation instruction is sent;
(2-3) the rotating speed n of gear planet carrier is obtained
bj;
(2-4) the rotating speed n of gear sun gear is obtained
bt;
(2-5) the rotating speed n of gear ring is determined
bq;
(2-6) judge whether break tension side rotating speed and the passive limit speed discrepancy absolute value of gear are not more than limit value Δ n
down;
If (2-7) condition is set up, then send break engagement command, complete downshift;
If (2-8) condition is false, reduces break tension side rotating speed and passive limit rotating speed difference, return described step (2-3), carry out next round and calculate and judge.
4. a kind of big speed ratio interval shift control method for serial electric driven vehicle as claimed in claim 2, is characterized in that: the instruction in described step (1-1) is sent to the control valve of the break of gear by transmission system integrated controller TCU; Instruction in described step (2-2) is sent to the control valve of the clutch of gear by transmission system integrated controller TCU.
5. a kind of big speed ratio interval shift control method for serial electric driven vehicle as claimed in claim 3, is characterized in that: the motor speed n in described step (2-1)
mregulated by transmission system integrated controller TCU and determined by following formula:
n
m＝n
max/i
b1
Wherein, n
maxfor motor maximum (top) speed, i
b1it is a gear velocity ratio.
6. a kind of big speed ratio interval shift control method for serial electric driven vehicle as claimed in claim 3, is characterized in that: the rotating speed n of the gear sun gear in described step (1-3) and step (2-4)
btby obtaining the rotating speed n of motor
mdetermine, wherein n
bt=n
m.
7. a kind of big speed ratio interval shift control method for serial electric driven vehicle as claimed in claim 6, is characterized in that: the gear ring rotating speed n in described step (1-4) and step (2-5)
bqaccording to the rotating speed n of gear planet carrier
bjwith the rotating speed n of gear sun gear
btdetermine:
n
bq＝[(1+k
b)n
bj-n
bt]/k
b
Wherein, k
bfor gear Parameter of Planet Bars.
8. a kind of big speed ratio interval shift control method for serial electric driven vehicle as claimed in claim 7, is characterized in that: clutch tension side rotating speed limit passive with it speed discrepancy absolute value of the gear in described step (1-5) is the speed discrepancy absolute value of described gear ring rotating speed and gear sun gear; The break tension side rotating speed of the gear in described step (2-6) and passive limit speed discrepancy absolute value are described gear ring rotating speed absolute value.
9. a kind of big speed ratio interval shift control method for serial electric driven vehicle as claimed in claim 8, is characterized in that: the instruction of described step (1-6) sends to the clutch control valve of gear; Instruction in described step (2-7) sends to the brake control valve of gear.
10. a kind of big speed ratio interval shift control method for serial electric driven vehicle as claimed in claim 9, is characterized in that: the clutch tension side rotating speed in described step (1-7) and passive limit rotating speed difference are by regulating the rotating speed n of motor
m=n
bjreduce; Break tension side rotating speed in described step (2-8) and passive limit rotating speed difference are by regulating the rotating speed n of motor
m=i
b1n
bjreduce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410488341.8A CN104315131B (en) | 2014-09-22 | 2014-09-22 | Control method for high-transmission-ratio spaced shifting of tandem type electric transmission vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410488341.8A CN104315131B (en) | 2014-09-22 | 2014-09-22 | Control method for high-transmission-ratio spaced shifting of tandem type electric transmission vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104315131A true CN104315131A (en) | 2015-01-28 |
| CN104315131B CN104315131B (en) | 2017-01-18 |
Family
ID=52370409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410488341.8A Active CN104315131B (en) | 2014-09-22 | 2014-09-22 | Control method for high-transmission-ratio spaced shifting of tandem type electric transmission vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104315131B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738479A (en) * | 2022-04-26 | 2022-07-12 | 中国北方车辆研究所 | Safety control method for transmission device with ultra-wide transmission ratio range |
| WO2024055181A1 (en) * | 2022-09-14 | 2024-03-21 | 舍弗勒技术股份两合公司 | Gear shifting control method and device for vehicle power system |
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| JPH08193652A (en) * | 1995-01-17 | 1996-07-30 | Mitsubishi Motors Corp | Speed change control device of automatic transmission with manual speed change mode |
| KR0139463B1 (en) * | 1995-10-09 | 1998-07-01 | 전성원 | Damper clutch control method of torque converter for automatic transmission |
| KR100198118B1 (en) * | 1996-05-16 | 1999-06-15 | 류정열 | Prevention method of forward and backward moving of a car with automatic transmission |
| KR100254235B1 (en) * | 1996-08-30 | 2000-05-01 | 정몽규 | Shift control unit and method to hydraulic response |
| CN101628542A (en) * | 2008-07-15 | 2010-01-20 | 中国北方车辆研究所 | Power-split hybrid driving device with blocking function |
| CN103267117A (en) * | 2013-05-27 | 2013-08-28 | 北京汽车新能源汽车有限公司 | Gear shifting method using economy shift schedule of blade electric vehicle |
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2014
- 2014-09-22 CN CN201410488341.8A patent/CN104315131B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08193652A (en) * | 1995-01-17 | 1996-07-30 | Mitsubishi Motors Corp | Speed change control device of automatic transmission with manual speed change mode |
| KR0139463B1 (en) * | 1995-10-09 | 1998-07-01 | 전성원 | Damper clutch control method of torque converter for automatic transmission |
| KR100198118B1 (en) * | 1996-05-16 | 1999-06-15 | 류정열 | Prevention method of forward and backward moving of a car with automatic transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738479A (en) * | 2022-04-26 | 2022-07-12 | 中国北方车辆研究所 | Safety control method for transmission device with ultra-wide transmission ratio range |
| CN114738479B (en) * | 2022-04-26 | 2023-12-22 | 中国北方车辆研究所 | Safety control method for transmission device with ultra-wide transmission ratio range |
| WO2024055181A1 (en) * | 2022-09-14 | 2024-03-21 | 舍弗勒技术股份两合公司 | Gear shifting control method and device for vehicle power system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104315131B (en) | 2017-01-18 |
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