CN106564492B - A kind of control method, device and the TCU of revolving speed of shifting gears - Google Patents
A kind of control method, device and the TCU of revolving speed of shifting gears Download PDFInfo
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- CN106564492B CN106564492B CN201510657572.1A CN201510657572A CN106564492B CN 106564492 B CN106564492 B CN 106564492B CN 201510657572 A CN201510657572 A CN 201510657572A CN 106564492 B CN106564492 B CN 106564492B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/30—Control strategies involving selection of transmission gear ratio
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
- B60W40/105—Speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/02—Clutches
- B60W2510/0275—Clutch torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/081—Speed
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Transmission Device (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
A kind of control method, device and the TCU of revolving speed of shifting gears, which comprises the operational mode of TCU detection vehicle；When the vehicle is pure motor mode, if the speed of the vehicle reaches shifting points, the TCU issues shifting commands to control clutch work；When determining the preset condition of the clutch on-the-job satisfaction, the TCU reduces the corresponding clutch transmission torque of current shift, and increases the corresponding clutch transmission torque of gear after shift；When the corresponding clutch transmission torque of the current shift is reduced to preset first threshold value, the TCU issues revolving speed request signal so that the revolving speed of revolving speed to the transmission input shaft corresponding with gear after shift of HCU adjusting motor is consistent.Shift time can be reduced using the above scheme.
Description
Technical field
The present invention relates to automotive field more particularly to a kind of control method, device and the TCU of revolving speed of shifting gears.
Background technique
Automobile plays more and more important role in modern society, it has also become in vast majority of people's daily life not
The a part that can or lack.Under the background for advocating environmental protection, pure electric automobile and hybrid vehicle (Hybrid Electric
Vehicle, HEV) it comes into being.When hybrid vehicle is run, there are three types of mode: pure engine mode, pure motor mode and
Hybrid mode.Wherein: pure engine mode, only engine provide power.Pure motor mode, only motor provide dynamic
Power.Hybrid mode, engine and motor provide power simultaneously.And mixed movement controller (Hybrid Control Unit,
HCU) be entire vehicle control core, be mainly responsible for coordinate engine management system (Engine Management System,
EMS), automatic gear-box control unit (Transmission Control Unit, TCU) and electric machine controller (Motor
Controller Unit, MCU) work, and it is responsible for the high and low pressure fulgurite reason and the detection of failure of entire dynamical system.
In existing hybrid vehicle shift process, the torque control signal often sent according to TCU is dynamic to adjust indirectly
The revolving speed in power source.
But in this case, shift time can be extended.
Summary of the invention
Problems solved by the invention is to reduce shift time.
To solve the above problems, the present invention provides a kind of control method of revolving speed of shifting gears, which comprises
Detect the operational mode of vehicle；
When the vehicle is pure motor mode, if the speed of the vehicle reaches shifting points, the TCU issues shift
Instruction is to control clutch work；
When determining the preset condition of the clutch on-the-job satisfaction, reduces the corresponding clutch transmitting of current shift and turn
Square, and increase the corresponding clutch transmission torque of gear after shift；
When the corresponding clutch transmission torque of the current shift is reduced to preset first threshold value, revolving speed is issued to HCU
Request signal is so that the revolving speed of revolving speed to the transmission input shaft corresponding with gear after shift of HCU adjusting motor is consistent.
Optionally, the method also includes:
When the vehicle is hybrid mode, and when the speed of the vehicle reaches shifting points, shifting commands are issued
So that the hybrid mode is switched to pure motor mode by the HCU.
Optionally, the preset condition, comprising: the clutch rush in advance the oily working time be more than it is default at the first time or
The oil pressure of the clutch is more than default second threshold.
Optionally, when the difference of the revolving speed of motor speed transmission input shaft corresponding with gear after the shift
When absolute value is not less than default third threshold value, the revolving speed request signal is changed with first slope；
When the absolute value of the difference of the revolving speed of motor speed transmission input shaft corresponding with gear after the shift
When lower than the third threshold value, the revolving speed request signal is less than institute with the second slope variation, the absolute value of second slope
State the absolute value of first slope.
Optionally, revolving speed request signal speed changer input corresponding with the torque of the motor, the current shift
The torque of axis transmitting, the inertia of the corresponding transmission input shaft torque of gear and the motor is related after shift.
Optionally, revolving speed request signal speed changer input corresponding with the torque of the motor, the current shift
The torque of axis transmitting, the relationship after shift between the corresponding transmission input shaft torque of gear and the inertia of the motor include:
Te-Tc1-Tc2=J × α, wherein the Te be the motor torque, Tc1 be the current shift it is corresponding from
Clutch transmits torque, and the Tc2 is the corresponding clutch transmission torque of gear after shift, and the J is the inertia of the motor, institute
Stating α indicates the change rate of the revolving speed request signal.
Optionally, the control method includes: and issues gear shifting signal when the TCU completes gear shifting action to HCU and make
The pure motor mode is switched back into the hybrid mode by the HCU.
A kind of control device for revolving speed of shifting gears, described device include:
Detection unit is adapted to detect for the operational mode of vehicle；
Instruction sending unit, suitable for when the detection unit determine the vehicle be pure motor mode when, if the vehicle
Speed when reaching shifting points, issue shifting commands to control clutch work；
Torque adjusts unit, suitable for reducing current shift pair when determining the preset condition of the clutch on-the-job satisfaction
The clutch transmission torque answered, and increase the corresponding clutch transmission torque of gear after shift；
Rotational speed regulation unit, suitable for being reduced to preset first threshold value when the corresponding clutch transmission torque of the current shift
When, revolving speed request signal is issued to HCU so that revolving speed to the speed changer corresponding with gear after shift that HCU adjusts motor inputs
The revolving speed of axis is consistent.
Optionally, described device further include: switch unit, suitable for determining that the vehicle is dynamic for mixing when the judging unit
When force mode, and when the speed of the vehicle reaches shifting points, shifting commands are issued to HCU so that the HCU described will be mixed
It closes dynamic mode and is switched to pure motor mode.
Optionally, the preset condition, comprising: the working time that the clutch rushes oil in advance is more than default first time
Or the oil pressure of the clutch is more than default second threshold.
Optionally, when the difference of the revolving speed of motor speed transmission input shaft corresponding with gear after the shift
When absolute value is not less than default third threshold value, the revolving speed request signal is changed with first slope；
When the absolute value of the difference of the revolving speed of motor speed transmission input shaft corresponding with gear after the shift
When lower than the third threshold value, the revolving speed request signal is less than institute with the second slope variation, the absolute value of second slope
State the absolute value of first slope.
Optionally, revolving speed request signal speed changer input corresponding with the torque of the motor, the current shift
The torque of axis transmitting, the inertia of the corresponding transmission input shaft torque of gear and the motor is related after shift.
Optionally, revolving speed request signal speed changer input corresponding with the torque of the motor, the current shift
The torque of axis transmitting, the relationship after shift between the corresponding transmission input shaft torque of gear and the inertia of the motor include:
Te-Tc1-Tc2=J × α, wherein the Te be the motor torque, Tc1 be the current shift it is corresponding from
Clutch transmits torque, and the Tc2 is the corresponding clutch transmission torque of gear after shift, and the J is the inertia of the motor, institute
Stating α indicates the change rate of the revolving speed request signal.
Optionally, the switch unit is further adapted for issuing gear shifting signal when the TCU completes gear shifting action and making institute
It states HCU and the pure motor mode is switched back into the hybrid mode.
The embodiment of the present invention provides a kind of TCU, the control device including above-described shift revolving speed.
Compared with prior art, technical solution of the present invention has the advantage that
When the corresponding clutch transmission torque of the current shift is reduced to preset first threshold value, by being issued to HCU
Revolving speed request signal is so that HCU adjusts the revolving speed of motor to the revolving speed one of transmission input shaft corresponding with gear after shift
It causes.Due to directly controlling motor speed to target sizes by revolving speed request signal, compared with the existing technology in pass through torque control
Signal processed indirectly controls motor speed, it is possible to reduce shift time.
Further, when the vehicle is hybrid mode, and when the speed of the vehicle reaches shifting points, to HCU
Shifting commands are issued so that the hybrid mode is switched to pure motor mode by the HCU, then again to power source
Revolving speed is adjusted.Due to being to carry out rotational speed regulation to single power source, adjustment signal can be rung to avoid a variety of power sources
Inconsistent problem is answered, to promote driving ride comfort.And it, can be to avoid because of engine by carrying out rotational speed regulation to motor
The problem of mechanical hardware individual difference, thereby may be ensured that the consistency of vehicle performance.And due to motor own closed loop control
System processed can be further reduced shift time with quick response request signal.
Further, the revolving speed request signal is first changed with first slope, later again with the change of the second slope, and described the
The absolute value of two slopes is lower than the absolute value of the first slope.It is corresponding with gear after the shift by the motor speed
The revolving speed of transmission input shaft will close to it is consistent when reduce the change speed of the motor speed, can mitigate the motor with
After the shift between the corresponding transmission input shaft of gear because rotating speed difference it is excessive caused by collide, so as to further
Ground improves the ride comfort of driving.
Detailed description of the invention
Fig. 1 is the process that hybrid vehicle shifts to 3 gears under pure motor mode by stepping on the gas from 2 gears in the prior art
Figure；
Fig. 2 is the flow chart of the control method of one of embodiment of the present invention shift revolving speed；
Fig. 3 is the mistake that hybrid vehicle of the embodiment of the present invention shifts to 3 gears under pure motor mode by stepping on the gas from 2 gears
Cheng Tu；
Fig. 4 is the hybrid vehicle structure chart based on DCT；
Fig. 5 is the hybrid vehicle structure chart based on AMT；
Fig. 6 is the hybrid vehicle structure chart that motor is located inside DCT；
Fig. 7 is the hybrid vehicle structure chart that motor is located inside AMT；
Fig. 8 is the structural schematic diagram of the control device of one of embodiment of the present invention shift revolving speed.
Specific embodiment
Currently, the hybrid vehicle of double-clutch automatic transmission is carried, in shift process, with engine mode
For lower upshift control, it can be generally divided into three phases, respectively clutch rushes oil control, torque phase and revolving speed phase rank in advance
Section is come indirect to adjust hair by torque control signal for the corresponding revolving speed of gear after enabling engine speed to drop to upshift
The revolving speed of motivation controls motor torque by reducing air inflow, postponement three kinds of modes of the angle of ignition and oil-break, to reach
The reduction of engine speed.
But in this case, the method due to adjusting power source speed by torque control signal
The method for not directly controlling power source speed can extend shift time.And use engine this when the vehicle is running
When power source, since response of the engine for torque control signal is slower relative to motor, when can further extend shift
Between.
To make those skilled in the art more fully understand the above problem, Fig. 1 shows hybrid power in the prior art
Automobile shifts to the procedure chart of 3 gears under pure motor mode by stepping on the gas from 2 gears.Clutch control can be with during entire upshift
It is divided into (1), (2) and (3) control process, in which: (1) rush the oily control stage to be pre-；It (2) is the torque phase control stage；It (3) is to turn
The fast phase control stage.
Fig. 1 (a) is throttle signal change curve；Fig. 1 (b) is DCT rotation speed change curve graph, and solid line indicates that motor turns
Speed, solid dotted line indicate that 2 revolving speed of DCT input shaft, hollow dotted line indicate 1 revolving speed of DCT input shaft；Fig. 1 (c) is the request of TCU revolving speed
Signal intensity curve graph；Fig. 1 (d) is DCT torque change curve, and solid line indicates TCU torque requests, and solid dotted line indicates clutch
Device 2 transmits torque, and hollow dotted line indicates that clutch 1 transmits torque；Fig. 1 (e) is speed change curve.
Vehicle is in 2 gear driving processes, and driver steps on the gas, and the throttle signal in (a) as shown in figure 1 is as it can be seen that work as TCU
When detecting that the speed of the vehicle reaches upshift point, shifting commands can be issued to control clutch work, wherein speed can
See shown in (e).In the 600ms-900ms period in Fig. 1, the oil pump is in pre- and rushes the oily stage, to make the oil of oil pump
Pressure is enough to provide enough control pressure for the separation of clutch or closure.In 900ms, the pre- punching oily stage terminates,
Within the 900ms-1100ms period, it is seen that shown in (d), the TCU reduces the corresponding clutch 2 of 2 gear gears and transmits torque, and
It is continuously increased the corresponding transmitting torque of clutch 1 of 3 gear gears and is reduced to certain value until the clutch 2 transmits torque, such as
It can be the value 3Nm of clutch Half engagement point, then the TCU issues torque request signal so that HCU controls the revolving speed of motor
The revolving speed of automatic transmission input shaft corresponding with 3 gear gears is identical, and wherein torque request signal can be found in the institute of the solid line in (d)
Show, then the motor speed shown in (b) solid line then follows the torque request signal to be accordingly changed, but can see due to
The revolving speed that motor is adjusted using torque request signal is not direct regulative mode, so the rotation speed change of motor corresponds to institute
The change for stating torque request signal is slow, can thus extend shift time.
In view of the above-mentioned problems, the embodiment of the invention provides control method, device and the TCU of a kind of revolving speed of shifting gears, it is described
Method includes when the corresponding clutch transmission torque of the current shift is reduced to preset first threshold value, and the TCU passes through hair
Revolving speed request signal is so that HCU adjusts the revolving speed of motor to the revolving speed one of transmission input shaft corresponding with gear after shift out
It causes.Due to directly controlling motor speed to target sizes by revolving speed request signal, compared with the existing technology in pass through torque control
Signal processed indirectly controls motor speed, it is possible to reduce shift time.
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Fig. 2 shows the flow charts of the control method of one of embodiment of the present invention shift revolving speed, below with reference to Fig. 2 pairs
The concrete operation step of the control of shift revolving speed is described in detail.
The operational mode of S21:TCU detection vehicle.
In specific implementation, in order to targetedly correspondingly handle the operational mode of different vehicle, the TCU
It can detecte the operational mode of vehicle.Such as hybrid vehicle, the operational mode can be pure engine mould
Formula, pure motor mode or hybrid mode.
In specific implementation, when the vehicle is pure motor mode, S22 can be executed；When the vehicle is mixing
When dynamic mode, the TCU issues shifting commands so that the hybrid mode is switched to pure motor mould by the HCU
Formula executes S22 after completing the powershift again, unlike pure motor mode is unique, when the TCU completes shift
When movement, the TCU issues gear shifting signal and makes the HCU that the pure motor mode is switched back into the hybrid mode.
S22: when the vehicle is pure motor mode, if the speed of the vehicle reaches shifting points, the TCU is issued
Shifting commands are to control clutch work.
In specific implementation, it for the vehicle for being mounted with double-clutch automatic gearbox, is needed in shift process point
Principal and subordinate's movable plate of clutch corresponding from current shift, and make principal and subordinate's movable plate of the corresponding clutch of gear after shift
In conjunction with, and control pressure can be provided for the combination of principal and subordinate's movable plate by controlling clutch work.Thus the TCU can be issued
Shifting commands are to control clutch work.
S23: when determining the preset condition of the clutch on-the-job satisfaction, the TCU reduce current shift it is corresponding from
Clutch transmits torque, and increases the corresponding clutch transmission torque of gear after shift.
It in specific implementation, can there are many methods to judge whether clutch work meets preset condition.Than
It such as can recorde whether the time that the clutch rushes in advance is more than default first time, be more than when the time that the clutch rushes in advance
When the first time, determine that the clutch has met preset condition, the first time can be 300ms.
For another example, also can detecte the oil pressure of the clutch and judge whether the oil pressure is more than default second threshold, when it is described from
When the oil pressure of clutch is more than the second threshold, the preset condition of clutch on-the-job satisfaction is determined, the second threshold can
Think 1.5Pa.It should be noted that the second threshold of the oil pressure is related with speed, speed is bigger, the second threshold of the oil pressure
It is worth bigger.
S24: when the corresponding clutch transmission torque of the current shift is reduced to preset first threshold value, the TCU hair
Revolving speed request signal is so that HCU adjusts the revolving speed of motor to the revolving speed one of transmission input shaft corresponding with gear after shift out
It causes.
In specific implementation, when the corresponding clutch transmission torque of the current shift is reduced to preset first threshold value,
When showing that principal and subordinate's movable plate of the clutch of current shift is basically separated, the TCU can issue revolving speed request signal so that
The revolving speed that HCU adjusts revolving speed to the transmission input shaft corresponding with gear after shift of motor is consistent.Due to gear pair after shift
The revolving speed for the transmission input shaft answered may be according to change the case where throttle signal, consistent i.e. final turn for adjusting motor
Speed is identical to the revolving speed of transmission input shaft corresponding with gear after shift.It should be noted that the first threshold can root
It is configured according to needs, for example the first threshold can be set to the corresponding clutch transmitting of clutch half hitch chalaza and turned
Square can be 3Nm.
To make those skilled in the art better understand the beneficial effect of above-described this method embodiment and changing
Gear process, Fig. 3 show hybrid vehicle of the embodiment of the present invention and shift to 3 gears from 2 gears by stepping on the gas under pure motor mode
Procedure chart.Clutch control can be divided into (1), (2) and (3) control process during entire upshift, in which: (1) be pre- punching
The oily control stage；It (2) is the torque phase control stage；It (3) is the revolving speed phase control stage.
Fig. 3 (a) is throttle signal change curve；Fig. 3 (b) is DCT rotation speed change curve graph, and solid line indicates that motor turns
Speed, solid dotted line indicate that 2 revolving speed of DCT input shaft, hollow dotted line indicate 1 revolving speed of DCT input shaft；Fig. 3 (c) is the request of TCU revolving speed
Signal intensity curve graph；Fig. 3 (d) is DCT torque change curve, and solid line indicates TCU torque requests, and solid dotted line indicates clutch
Device 2 transmits torque, and hollow dotted line indicates that clutch 1 transmits torque；Fig. 3 (e) is speed change curve.
It should be noted that compared for clear declarative procedure and with shift process shown in fig. 1, this Wen Jun with
It steps on the gas and rises to the powershift process of 3 gears from 2 gears for example, still vehicle is upshift or shift, or is driven
Member steps on the gas or does not step on the gas, and does not constitute a limitation to the technical solution of the control method of shift revolving speed of the invention.
When the TCU issues revolving speed request signal so that the automatic change corresponding with 3 gear gears of the revolving speed of HCU control motor
The revolving speed of fast device input shaft is identical, and wherein revolving speed request signal can be found in Fig. 3 (c), then the electricity shown in (b) solid line in Fig. 3
Machine revolving speed then follows the torque request signal to be accordingly changed, it can be seen that due to directly revolving speed request signal being used to adjust
The revolving speed of motor, so the rotation speed change of motor is slow corresponding to the change of the revolving speed request signal, the change curve of the two
Basic synchronization, so as to save shift time.Especially by comparison diagram 1 and Fig. 3 as it can be seen that stepping on the gas again by driver
Shift process needs 1900ms to complete shift using the method for controlling number of revolution of the prior art, and uses in the embodiment of the present invention
The control method of shift revolving speed only needs 1400ms that shift process can be completed.
In order to promote driving ride comfort, the revolving speed request signal is corresponding with gear after the shift in the motor speed
The absolute value of difference of revolving speed of transmission input shaft when being not less than default third threshold value, changed with first slope；Described
The absolute value of the difference of the revolving speed of motor speed transmission input shaft corresponding with gear after the shift is lower than the third threshold
When value, with the second slope variation, the absolute value of second slope is less than the absolute value of the first slope.I.e. so that described turn
Fast request signal is changed with speed first quick and back slow.
In specific visible Fig. 3 shown in (c), in 1100ms, gear pair after the motor speed and the shift at the beginning
When the difference of the revolving speed for the transmission input shaft answered is greater than 200rpm, the slope of revolving speed request signal is very big, then motor speed
Variation is quickly；When the difference of the revolving speed of motor speed transmission input shaft corresponding with gear after the shift is lower than
When 200rpm, the slope of revolving speed request signal starts to become smaller, then the variation of motor speed is relatively slack-off, can promote driving in this way
Ride comfort.In 1250ms, it can be seen that Fig. 3 (b) and (c) in solid line have the inflection point of a slope, can be with when the inflection point
The difference for corresponding to the revolving speed of the revolving speed transmission input shaft corresponding with gear after the shift of motor is 200rpm, then exists
In the 1100ms-1250ms period, the motor speed is changed with the first slope, and in the 1250ms-1400ms period
Interior, the motor speed is changed with second slope.
In specific implementation, revolving speed request signal speed change corresponding with the torque of the motor, the current shift
The torque of device input shaft transmitting, the inertia of the corresponding transmission input shaft torque of gear and the motor is related after shift.
In an embodiment of the present invention, the revolving speed request signal meets following formula: Te-Tc1-Tc2=J × α, wherein
The Te is the torque of the motor, and Tc1 is the corresponding clutch transmission torque of the current shift, and the Tc2 is after shifting gears
The corresponding clutch transmission torque of gear, the J are the inertia of the motor, and the α indicates the change of the revolving speed request signal
Rate.
It should be noted that the present invention is suitable for the automatic transmission of different types, for example can be adapted for shown in Fig. 4
It is described to be based on DCT based on the hybrid vehicle of double-clutch automatic gearbox (Dual Clutch Transmission, DCT)
Hybrid vehicle include: engine 41, front clutch 42, motor 43, automatic mechanical transmission (Automated
Manual Transmission, AMT) 44 and wheel 45；It is readily applicable to the hybrid power vapour based on AMT shown in Fig. 5
Vehicle, the hybrid vehicle based on AMT include: engine 51, front clutch 52, motor 53, DCT 54 and wheel 55；Together
When can be applicable to the hybrid vehicle based on hydraulic type automatic transmission (Automatic Transmission, AT).
Moreover, specific location of the present invention also not by motor in vehicle is limited, for example present invention may apply to shown in Fig. 6
Hybrid vehicle of the motor inside DCT, the hybrid vehicle include: engine 61, AMT 62, motor 63 and wheel
64；Hybrid vehicle of the motor shown in Fig. 7 inside AMT is applied also for, the hybrid vehicle includes: engine
71, DCT 72, motor 73 and wheel 74.
To better understand those skilled in the art and realizing the present invention, below to the control of above-mentioned shift revolving speed
Device corresponding to method is described in detail.
Fig. 8 shows a kind of control device for revolving speed of shifting gears in the embodiment of the present invention, and described device includes: detection unit
81, instruction sending unit 82, torque adjust unit 83 and rotational speed regulation unit 84, in which:
The detection unit 81, is adapted to detect for the operational mode of vehicle；
Described instruction transmission unit 82 is suitable for when the detection unit 81 determines that the vehicle is pure motor mode, if
When the speed of the vehicle reaches shifting points, shifting commands are issued to control clutch work；
The torque adjusts unit 83, suitable for reducing current when determining the preset condition of the clutch on-the-job satisfaction
The corresponding clutch transmission torque of gear, and increase the corresponding clutch transmission torque of gear after shift；
The rotational speed regulation unit 84, suitable for being reduced to default the when the corresponding clutch transmission torque of the current shift
When one threshold value, revolving speed request signal is issued so that the revolving speed of HCU adjusting motor is defeated to speed changer corresponding with gear after shift
The revolving speed for entering axis is consistent.
In specific implementation, the control device of the shift revolving speed can also include: switch unit 85.The switch unit
85 are suitable for when the judging unit determines that the vehicle is hybrid mode, and the speed of the vehicle reaches shifting points
When, shifting commands are issued so that the hybrid mode is switched to pure motor mode by the HCU.
In specific implementation, the preset condition, comprising: the clutch rushes the oily working time more than default first in advance
The oil pressure of time or the clutch is more than default second threshold.
In specific implementation, when the revolving speed of motor speed transmission input shaft corresponding with gear after the shift
When the absolute value of difference is not less than default third threshold value, the revolving speed request signal is changed with first slope；
When the absolute value of the difference of the revolving speed of motor speed transmission input shaft corresponding with gear after the shift
When lower than the third threshold value, the revolving speed request signal is less than institute with the second slope variation, the absolute value of second slope
State the absolute value of first slope.
In specific implementation, revolving speed request signal speed change corresponding with the torque of the motor, the current shift
The torque of device input shaft transmitting, the inertia of the corresponding transmission input shaft torque of gear and the motor is related after shift.
In specific implementation, Te-Tc1-Tc2=J × α, wherein the Te is the torque of the motor, Tc1 is described works as
The corresponding clutch transmission torque of preceding gear, the Tc2 are the corresponding clutch transmission torque of gear after shift, and the J is institute
The inertia of motor is stated, the α indicates the change rate of the revolving speed request signal.
In specific implementation, the switch unit 85 is further adapted for issuing shift letter when the TCU completes gear shifting action
Number make the HCU that the pure motor mode is switched back into the hybrid mode.
When the corresponding clutch transmission torque of the current shift is reduced to preset first threshold value, the rotational speed regulation list
Member 84 is by issuing revolving speed request signal so that revolving speed to the speed changer corresponding with gear after shift that HCU adjusts motor inputs
The revolving speed of axis is consistent.Due to directly controlling motor speed to target sizes by revolving speed request signal, compared with the existing technology in
Motor speed is indirectly controlled by torque control signal, it is possible to reduce shift time.
The embodiment of the invention also provides a kind of HCU, the control device including above-described shift revolving speed.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can store in computer readable storage medium, storage
Medium may include: ROM, RAM, disk or CD etc..
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (15)
1. a kind of control method for revolving speed of shifting gears characterized by comprising
Detect the operational mode of vehicle；
When the vehicle is pure motor mode, if the speed of the vehicle reaches shifting points, TCU issues shifting commands to control
Clutch work processed；
When determining the preset condition of the clutch on-the-job satisfaction, the corresponding clutch transmission torque of current shift is reduced, and
Increase the corresponding clutch transmission torque of gear after shifting gears；
When the corresponding clutch transmission torque of the current shift is reduced to preset first threshold value, revolving speed request is issued to HCU
Signal is so that the revolving speed of revolving speed to the transmission input shaft corresponding with gear after shift of HCU adjusting motor is consistent.
2. the control method for revolving speed of shifting gears according to claim 1, which is characterized in that further include:
When the vehicle is hybrid mode, and when the speed of the vehicle reaches shifting points, issue shifting commands so that
It obtains the HCU and the hybrid mode is switched to pure motor mode.
3. the control method for revolving speed of shifting gears according to claim 1, which is characterized in that the preset condition, comprising: described
The working time that clutch rushes oil in advance is more than to preset the oil pressure of first time or the clutch more than default second threshold.
4. the control method for revolving speed of shifting gears according to claim 1, which is characterized in that
When the absolute value of the difference of the revolving speed of motor speed transmission input shaft corresponding with gear after the shift is not low
When default third threshold value, the revolving speed request signal is changed with first slope；
When the absolute value of the difference of the revolving speed of motor speed transmission input shaft corresponding with gear after the shift is lower than
When the third threshold value, for the revolving speed request signal with the second slope variation, the absolute value of second slope is less than described the
The absolute value of one slope.
5. the control method for revolving speed of shifting gears according to claim 1, which is characterized in that the revolving speed request signal and the electricity
The corresponding speed changer input of gear after the torque of machine, the torque of the corresponding transmission input shaft transmitting of the current shift, shift
The inertia of shaft torque and the motor is related.
6. the control method for revolving speed of shifting gears according to claim 5, which is characterized in that the revolving speed request signal and the electricity
The corresponding speed changer input of gear after the torque of machine, the torque of the corresponding transmission input shaft transmitting of the current shift, shift
Relationship between the inertia of shaft torque and the motor includes:
Te-Tc1-Tc2=J × α, wherein the TeFor the torque of the motor, Tc1It is passed for the corresponding clutch of the current shift
Pass torque, the Tc2For the corresponding clutch transmission torque of gear after shift, the J is the inertia of the motor, and the α is indicated
The change rate of the revolving speed request signal.
7. the control method for revolving speed of shifting gears according to claim 2 characterized by comprising moved when the TCU completes shift
When making, gear shifting signal is issued to HCU and makes the HCU that the pure motor mode is switched back into the hybrid mode.
8. a kind of control device for revolving speed of shifting gears characterized by comprising
Detection unit is adapted to detect for the operational mode of vehicle；
Instruction sending unit, suitable for when the detection unit determine the vehicle be pure motor mode when, if the speed of the vehicle
When degree reaches shifting points, shifting commands are issued to control clutch work；
Torque adjusts unit, suitable for it is corresponding to reduce current shift when determining the preset condition of the clutch on-the-job satisfaction
Clutch transmission torque, and increase the corresponding clutch transmission torque of gear after shift；
Rotational speed regulation unit, suitable for when the corresponding clutch transmission torque of the current shift is reduced to preset first threshold value,
Revolving speed request signal is issued to HCU so that HCU adjusts the revolving speed of motor to transmission input shaft corresponding with gear after shift
Revolving speed it is consistent.
9. the control device for revolving speed of shifting gears according to claim 8, which is characterized in that further include: switch unit is sentenced suitable for working as
When disconnected unit determines that the vehicle is hybrid mode, and when the speed of the vehicle reaches shifting points, issues and shift gears to HCU
Instruction is so that the hybrid mode is switched to pure motor mode by the HCU.
10. the control device for revolving speed of shifting gears according to claim 8, which is characterized in that the preset condition, comprising: institute
State clutch rush in advance oil working time be more than it is default at the first time or the oil pressure of the clutch is more than default second threshold.
11. the control device for revolving speed of shifting gears according to claim 8, which is characterized in that when the motor speed is changed with described
When the absolute value of the difference of the revolving speed of the corresponding transmission input shaft of gear is not less than default third threshold value after gear, the revolving speed is asked
Signal is asked to change with first slope；
When the absolute value of the difference of the revolving speed of motor speed transmission input shaft corresponding with gear after the shift is lower than
When the third threshold value, for the revolving speed request signal with the second slope variation, the absolute value of second slope is less than described the
The absolute value of one slope.
12. according to claim 8 shift gears revolving speed control device, which is characterized in that the revolving speed request signal with it is described
The corresponding speed changer of gear is defeated after the torque of motor, the torque of the corresponding transmission input shaft transmitting of the current shift, shift
The inertia for entering shaft torque and the motor is related.
13. according to claim 12 shift gears revolving speed control device, which is characterized in that the revolving speed request signal with it is described
The corresponding speed changer of gear is defeated after the torque of motor, the torque of the corresponding transmission input shaft transmitting of the current shift, shift
The relationship entered between the inertia of shaft torque and the motor includes:
Te-Tc1-Tc2=J × α, wherein the TeFor the torque of the motor, Tc1It is passed for the corresponding clutch of the current shift
Pass torque, the Tc2For the corresponding clutch transmission torque of gear after shift, the J is the inertia of the motor, and the α is indicated
The change rate of the revolving speed request signal.
14. the control device for revolving speed of shifting gears according to claim 9, which is characterized in that the switch unit is further adapted for working as
When TCU completes gear shifting action, issues gear shifting signal and make the HCU that the pure motor mode is switched back into the hybrid power mould
Formula.
15. a kind of TCU, the control device including the described in any item shift revolving speeds of claim 8-14.
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| CN107226085B (en) * | 2017-06-20 | 2019-05-28 | 上海汽车变速器有限公司 | The shift control method of wet dual clutch transmission hybrid vehicle |
| CN108394412B (en) * | 2018-04-25 | 2020-10-30 | 吉利汽车研究院（宁波）有限公司 | Shift control system and method for hybrid electric vehicle |
| CN109268489B (en) * | 2018-09-25 | 2020-09-15 | 浙江吉利变速器有限公司 | Self-learning control method for D-gear shifting |
| CN109606350B (en) * | 2018-12-24 | 2020-07-07 | 浙江吉利汽车研究院有限公司 | Engine start control method, device and system |
| CN111350809B (en) * | 2018-12-24 | 2021-04-20 | 长城汽车股份有限公司 | Hybrid electric vehicle and pre-gear selection control method of dual-clutch transmission of hybrid electric vehicle |
| CN111098848B (en) * | 2020-02-20 | 2020-08-07 | 吉利汽车研究院（宁波）有限公司 | A kind of control method, system and device for smooth shifting of hybrid electric vehicle |
| CN114909469B (en) * | 2021-02-07 | 2024-04-16 | 广汽埃安新能源汽车有限公司 | Vehicle upshift control method, device and storage medium |
| CN114162108B (en) * | 2021-12-23 | 2024-05-07 | 盛瑞传动股份有限公司 | Method and device for switching driving modes of P2 type hybrid electric vehicle, vehicle and medium |
| CN114771497A (en) * | 2022-04-12 | 2022-07-22 | 中国第一汽车股份有限公司 | Vehicle dynamic torque control method, device, storage medium and electronic device |
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