CN101122334A - Double-clutch automatic speed-changer electric controller and its control method - Google Patents
Double-clutch automatic speed-changer electric controller and its control method Download PDFInfo
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- CN101122334A CN101122334A CNA2007100458734A CN200710045873A CN101122334A CN 101122334 A CN101122334 A CN 101122334A CN A2007100458734 A CNA2007100458734 A CN A2007100458734A CN 200710045873 A CN200710045873 A CN 200710045873A CN 101122334 A CN101122334 A CN 101122334A
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Abstract
An electric control device of a double-clutch automatic transmission comprises a micro processor, an input signal passage, an output signal passage, a CAN communication bus bar, and a power module. The input signal passage acquires the present operating state information of a vehicle via a sensor. The information is processed by the micro processor and transmitted to the output signal passage, which together with a solenoid valve and an actuation motor outputs a control signal to make clutches and a gear mechanism act and realize the automatic transmission control. The advantage of the invention is that by acquiring and processing the sensor signal, information of the present operating state of a vehicle and the intention of a driver is obtained; based on the information, calculation, analysis and judgment are carried out; according to the gear shift rule stored in the system, a control directive is given to the clutches and an actuation part of the gear shift mechanism to make the double-clutch automatic transmission shift the gear accurately, rapidly and comfortably and guarantee the good dynamic performance and fuel oil economy.
Description
Technical field
The present invention relates to a kind of automotive power transmission system, the controlling method of the particularly electric controller of one of core component of a kind of double-clutch automatic gearbox, and this device.
Background technique
Double-clutch automatic gearbox (DCT) is to grow up on the basis of manual transmission (ManualTransmission-MT), electric control mechanical type automatic speed variator (Automated ManualTransmission-AMT), aspect mechanical structure, certain similarity is arranged with MT, AMT, how in the extremely short time, two clutches and gear-selecting-shifting mechanism to be controlled effectively, thereby the realization automaitc shfit is main contents of the present invention.
Summary of the invention
Technical problem of the present invention is to provide a kind of effective solenoidoperated cluthes and gear-selecting-shifting mechanism to realize the electric controller and the controlling method of the double-clutch automatic gearbox of automaitc shfit.
In order to solve above technical problem, the invention provides a kind of electric controller of double-clutch automatic gearbox, comprise a microprocessor, input signal channel, output signal channel, CAN communication bus and power module, input signal channel is by the current running state information of sensor acquisition automobile, after microprocessor processes, deliver to output signal channel, with solenoid valve, actuating motor output control signal, make clutch, select the gear mechanism action, realize automatic shift control.
The collection of the current running state information of described automobile, it is the input pulse signal of gathering the speed of a motor vehicle, engine speed, clutch driven plate rotating speed with magnetoelectric sensor, send microprocessor behind filtering shaping circuit and optical coupling isolation circuit, input signal channel also has air throttle of car aperture signal, car status information, multifunction switch and other digital signal.
Described output signal channel has current gear, anticipation gear A, anticipation gear B, enabler flags signal and actuator to drive.It is motor drive module that actuator drives, and adopts a special-purpose integrated drive chips to drive direct current generator, realizes the correct operation of gear selecting final controlling element and gear shifting operator respectively.
Described CAN communication bus, the DC electrical source of itself and microprocessor adopt two opto-coupler chips to isolate.
Electric controller of the present invention is typical multi-input multi-output system, needs to carry out the accurate switching of Multi task in normal vehicle operation and gearshift procedure, and finishes the scheduling of system resource within a certain period of time.The present invention has adopted embedded OS μ C/OS-II, embedded OS μ C/OS-II is open, the curable embedded multiple task real-time operation system kernel of a source code, its core code is short and pithy, have very high stability and reliability, this operation system can be managed 64 different tasks, belong to the real-time kernel that to deprive type fully, task is carried out the formula scheduling of taking the lead, being system makes the CPU the highest task of priority under the running ready condition always by task management, guarantees real-time.
Controlling method of the present invention may further comprise the steps:
1) system initialization;
2) start embedded OS μ C/OS-II;
Is 3) the V_speed perseverance 1? be to gather speed information;
Is 4) not, the E_speed perseverance 1?
Be to gather engine speed information;
Is 5) not, the C1speed perseverance 1?
Be to gather clutch 1 rotary speed information;
Is 6) not, the C2speed perseverance 1?
Be to gather clutch 2 rotary speed informations;
Is 7) not, the Throttle perseverance 1?
Be to gather throttle opening information;
Is 8) not, the G_select perseverance 1?
Be control gear selecting mechanism;
Is 9) not, the G_shift perseverance 1?
Be the control gearshift mechanism;
Is 10) not, the Clutch1 perseverance 1?
Be solenoidoperated cluthes 1 speed governing;
Is 11) not, the Clutch2 perseverance 1?
Be solenoidoperated cluthes 2 speed governing.
Superior effect of the present invention is:
1) the present invention is by collection and processing to sensor signal, obtain the current running state and the driver intention of vehicle, and calculate on this basis, analyze and judge, process of power shift according to the internal system storage, power unit to clutch and gear-selecting-shifting mechanism sends control command, realize double-clutch automatic gearbox accurately, rapidly, gear shift cosily, and guarantee power character and fuel economy preferably;
2) the present invention is based on embedded OS μ C/OS-II and carry out software development, phenomenons such as the frequent program fleet that occurs, endless loop in the traditional software design have been avoided, improve the reliability and the anti-interference of system, and provide convenience for the multitask program design of complexity, debugging and function expansion;
3) for the ease of system upgrade, the priority number of all task modules is set to even number in the software design, if need in system, add other function, just can directly insert other task that priority number is an odd number on this basis, and do not need to change the priority of original task, simplify the interpolation of new task thus, improved the opening and the extensibility of system.
Description of drawings
Fig. 1 is the schematic block circuit diagram of electric controller of the present invention;
Fig. 2 is the filtering finishing circuit figure of input signal channel of the present invention;
Fig. 3 is the optical coupling isolation circuit figure of input signal channel of the present invention;
Fig. 4 is the circuit diagram of the motor drive module of output signal channel of the present invention;
Fig. 5 is the circuit diagram of power module of the present invention;
Fig. 6 is CAN transceiver circuit figure of the present invention;
Fig. 7 is a CAN bus electrical isolation circuit diagram of the present invention;
Fig. 8 is the multi-task scheduling figure of embedded OS μ C/OS-II of the present invention;
Fig. 9 is the multi-task scheduling figure of traditional single-chip microcomputer;
Figure 10 is the flow chart of controlling method of the present invention;
The number in the figure explanation
The 1-microprocessor;
The 21-vehicle speed signal; 22-clutch driven plate tach signal;
The 23-engine rotational speed signal; 24-throttle opening signal;
25-vehicle-state sign; 26-multifunction switch signal;
The current gear signal of 31-; 32-anticipation gear a-signal;
33-anticipation gear B signal; 34-enabler flags signal;
35-actuator driver module;
The 4-power module; The 5-CAN communication bus.
Embodiment
See also shown in the accompanying drawing, the invention will be further described.
Shown in the schematic block circuit diagram of Fig. 1 electric controller of the present invention, the invention provides a kind of electric controller of double-clutch automatic gearbox, comprise a microprocessor 1, input signal channel, output signal channel, CAN communication bus 5 and power module 4, input signal channel is by the current running state information of sensor acquisition automobile, after handling, microprocessor 1 delivers to output signal channel, with solenoid valve, actuating motor output control signal, make clutch, select the gear mechanism action, realize automatic shift control.
The collection of the current running state information of described automobile, it is the input pulse signal of gathering the speed of a motor vehicle 21, engine speed 23, clutch driven plate rotating speed 22 with magnetoelectric sensor, send microprocessor behind filtering shaping circuit and optical coupling isolation circuit, input signal channel also has air throttle of car aperture signal 24.The input pulse signal of the speed of a motor vehicle 21, engine speed 23, clutch driven plate rotating speed 22, adopt magnetoelectric sensor, what export is the sine wave of frequency and amplitude variations, its frequency is directly proportional with the survey rotating speed, this analogue signal is difficult for directly being read by the pulse capture module of single-chip microcomputer, the processing method of shaping is shown as Fig. 2 after the first filtering of needs employing.Digital quantity input signal for car status information 25, multifunction switch 26, adopt optoelectronic isolator TLP521-4 to realize that signal is isolated and the amplitude conversion, as shown in Figure 3,4 way word signals are input to the PB4-PB7 mouth of single-chip microcomputer after photoelectricity is isolated, realize the collection of digital signal.
Described output signal channel has current gear 31, anticipation gear A32, anticipation gear B33, enabler flags signal 34 and actuator to drive 35, it is motor drive modules that actuator drives 35, adopt a special-purpose integrated drive chips, drive two direct current generators, drive gear selecting mechanism and gearshift mechanism respectively, as shown in Figure 4, adopt the main devices of integrated chip L298N as driver module, L298N is the special driving chip of high voltage, high electric current, its inner integrated two H bridge drive circuits can be controlled two direct current motors simultaneously.For each motor, need utilize three input signals to realize control.The output pin PH0 of single-chip microcomputer meets the signal input part IN1 of L298N and IN2 through corresponding logical circuit and is used to control and selects turning to of gear shift motor, another signal input part ENA is used to introduce the pwm signal of SCM PWM 0 passage, by changing the PWM waveform, just can change two output terminal OUT1 of L298N and OUT2 and be added in the average voltage that selects on the gear shift motor, realize speed regulating control.
Shown in the circuit diagram of Fig. 5 power module of the present invention,, be necessary for SCM system reliable and stable power supply signal is provided in order to make the electric controller proper functioning.The present invention needs+12V and+two kinds of power supply voltages of 5V, and Vehicular accumulator cell only provides+voltage of 12V, so power module 4 need provide stable+12V and+5V voltage, select for use the LM2576T5.0 chip to finish the DC/DC conversion of 12V-5V, and adopt 7812 pairs of battery tensions of three-terminal voltage-stabilizing pipe to carry out voltage stabilizing and handle.
On the basis of research CAN2.0A standard and SAE J1939, designed corresponding C AN network application-level protocol and bus interface circuit, and verified the reliability and the communication real-time of this agreement by experiment.As shown in Figure 6, No. 1 and No. 4 pins are respectively applied for signal and send and receive, and link to each other with MSCAN module in the microcontroller 1, and by No. 6 and No. 7 pins differential signal are connected on the physical bus and (use unshielded twisted pair usually); For the rising edge of controlling the CAN differential signal and the gradient of trailing edge, between No. 8 pin of chip and ground, meet R73, thus coupling CAN rate requirement, and reduce to external world interference.
For producing SCM system, disturbs the heavy current signal that prevents the bus communication circuit, the reliability of enhanced system, microcontroller 1 and physical bus need be carried out electrical isolation, as shown in Figure 7, adopt two photoelectric coupled device 6N137, realize the DC-DC electrical isolation, VCC and VDD are respectively the positive source before and after the electrical isolation, PM0 that draws from the MSCAN module of MC9S12DT256 microcontroller 1 and PM1 isolate the back by two 6N137 and produce signals and receive line Rx and send line Tx, and link to each other with No. 1 pin with No. 4 of PCA82C250 transceiver.
Electric controller of the present invention is typical multi-input multi-output system, needs to carry out the accurate switching of Multi task in normal vehicle operation and gearshift procedure, and finishes the scheduling of system resource within a certain period of time.As shown in Figure 9, the conventional one-piece machine can not satisfy requirement at aspects such as function, real-time, reliabilities to the mode of multi-task scheduling, is mainly reflected in two relatively distinct issues.The one, interrupt response generally in order to guarantee the real-time of a certain vital task, just must be carried out comparatively complicated processing in interruption, will consider problems such as code is reentried, the system hardware storehouse overflows like this; The 2nd, task is many, and various scheduling of resource are improper will to cause shared data inconsistent, reduces the reliability of system, and time delay subroutine is arranged simultaneously, and CPU waits for finishing of time-delay always, and can not carry out other operations, and system real time is poor.
As shown in Figure 8, the present invention has adopted embedded OS μ C/OS-II, embedded OS μ C/OS-II is open, the curable embedded multiple task real-time operation system kernel of a source code, its core code is short and pithy, have very high stability and reliability, this operation system can be managed 64 different tasks, belong to the real-time kernel that to deprive type fully, task is carried out the formula scheduling of taking the lead, being system makes the CPU the highest task of priority under the running ready condition always by task management, guarantees real-time.
The present invention is transplanted to embedded OS μ C/OS-II kernel on the MC9S12DT256B microprocessor 1, and design each task submodule and corresponding task priority respectively according to the functional requirement of double-clutch automatic gearbox DCT on this basis, comprise engine rotational speed signal 23 acquisition modules, clutch rotational speed signal acquisition module, throttle opening signal 24 acquisition modules, Clutch Control module, gear-selecting-shifting mechanism control module etc.Design and debugging by each task submodule, by operation system all tasks are managed and dispatch, distribute corresponding system hardware resources, improve the execution efficient and the reliability of software code, thereby satisfy the requirement of electric controller of the present invention, each task module and the priority of table 1 for setting in the automatical control system software.
Table 1
| Task name | Mission statement | Priority |
| TaskStart() | Operation system is set up |
2 |
| TaskSelf_Detect() | The controller self- |
4 |
| TaskVehicle_speed() | Vehicle speed signal is gathered | 6 |
| TaskEngine_speed() | Engine rotational speed signal is gathered | 8 |
| TaskClutch1_speed() | |
10 |
| TaskClutch2_speed() | |
12 |
| TaskThrottle() | The throttle opening signals collecting | 14 |
| TaskClutch1() | |
16 |
| TaskClutch2() | |
18 |
| TaskGear_select() | The gear selecting mechanism controls | 20 |
| TaskGear_shift() | |
22 |
By table 1 as seen, for the ease of upgrading, the priority number of all task modules is set to even number, if need to add other function, just can directly insert other task that priority number is an odd number on this basis, and do not need to change the priority of original task, and simplified the interpolation of new task thus, improved opening of the present invention and extensibility.
TaskStart () is the top priority of moving after the embedded OS μ C/OS-II initialization, and it is used to set up all other tasks of double-clutch automatic gearbox DCT electric controller, and this task is carried out once back deletion task itself, no longer carries out; TaskSelf_Detect () executive control system power-on self-test program, it is also out of service to report to the police when breaking down in system; TaskVehicle_speed (), TaskEngine_speed (), TaskClutch1_speed (), TaskClutch2_speed () are the pulse signal acquisition tasks, gather the speed of a motor vehicle 21, engine speed 23, clutch 1 and clutch 2 driven disc rotating speeds 22 respectively; TaskClutch1 (), TaskClutch2 (), TaskGear_select (), TaskGear_shift () are double-clutch automatic gearbox actuating mechanism controls tasks, they are by collection, calculating, judgement and analysis to input signal, according to suitable control strategy, send real time control command to each actuator, shown in the flow chart of Figure 10 controlling method of the present invention, this controlling method may further comprise the steps:
1) system initialization;
2) start embedded OS μ C/OS-II;
Is 3) the V_speed perseverance 1? be to gather speed information;
Is 4) not, the E_speed perseverance 1?
Be to gather engine speed information;
Is 5) not, the C1speed perseverance 1?
Be to gather clutch 1 rotary speed information;
Is 6) not, the C2speed perseverance 1?
Be to gather clutch 2 rotary speed informations;
Is 7) not, the Throttle perseverance 1?
Be to gather throttle opening information;
Is 8) not, the G_select perseverance 1?
Be control gear selecting mechanism;
Is 9) not, the G_shift perseverance 1?
Be the control gearshift mechanism;
Is 10) not, the Clutch1 perseverance 1?
Be solenoidoperated cluthes 1 speed governing;
Is 11) not, the Clutch2 perseverance 1?
Be solenoidoperated cluthes 2 speed governing.
Claims (10)
1. the electric controller of a double-clutch automatic gearbox comprises a microprocessor, input signal channel, output signal channel, CAN communication bus and power module, it is characterized in that:
Input signal channel is by the current running state information of sensor acquisition automobile, delivers to output signal channel and solenoid valve, actuating motor output control signal after microprocessor processes, makes clutch, selects the gear mechanism action, realizes automatic shift control.
2. by the electric controller of the described a kind of double-clutch automatic gearbox of claim 1, it is characterized in that:
The collection of the current running state information of described automobile is an input pulse signal of gathering the speed of a motor vehicle, engine speed, clutch driven plate rotating speed with magnetoelectric sensor, send microprocessor behind filtering shaping circuit and optical coupling isolation circuit.
3. by the electric controller of the described a kind of double-clutch automatic gearbox of claim 1, it is characterized in that:
Described input signal channel also has air throttle of car aperture signal, car status information, multifunction switch and other digital signal.
4. by the electric controller of the described a kind of double-clutch automatic gearbox of claim 1, it is characterized in that:
Described output signal channel has current gear, anticipation gear A, anticipation gear B, enabler flags signal and actuator to drive.
5. by the electric controller of the described a kind of double-clutch automatic gearbox of claim 4, it is characterized in that:
It is motor drive module that described actuator drives, and with a special-purpose integrated drive chips, drives two direct current generators, realizes gear selecting and gear shift respectively.
6. by the electric controller of the described a kind of double-clutch automatic gearbox of claim 1, it is characterized in that:
Described CAN communication bus, the DC electrical source of itself and microprocessor adopt two opto-coupler chips to isolate.
7. the controlling method of the electric controller of a double-clutch automatic gearbox, it is characterized in that: this method may further comprise the steps:
1) system initialization;
2) start embedded OS μ C/OS-II;
Is 3) the V_speed perseverance 1? be to gather speed information;
Is 4) not, the E_speed perseverance 1?
Be to gather engine speed information;
Is 5) not, the C1speed perseverance 1?
Be to gather clutch 1 rotary speed information;
Is 6) not, the C2speed perseverance 1?
Be to gather clutch 2 rotary speed informations;
Is 7) not, the Throttle perseverance 1?
Be to gather throttle opening information;
Is 8) not, the G_select perseverance 1?
Be control gear selecting mechanism;
Is 9) not, the G_shift perseverance 1?
Be the control gearshift mechanism;
Is 10) not, the Clutch1 perseverance 1?
Be solenoidoperated cluthes 1 speed governing;
Is 11) not, the Clutch2 perseverance 1?
Be solenoidoperated cluthes 2 speed governing.
8. by the electric controller of the described a kind of double-clutch automatic gearbox of claim 7, it is characterized in that:
Described embedded OS μ C/OS-II is the high task module of running priority rank to multi-task scheduling.
9. by the electric controller of the described a kind of double-clutch automatic gearbox of claim 8, it is characterized in that:
Described task module, its priority number is even number.
10. the controller of the electric controller of a double-clutch automatic gearbox is characterized in that:
1) system initialization device;
2) start embedded OS μ C/OS-II device;
3) judge that the V_speed perseverance is 1 device; Be to gather the speed information device;
4) do not judge that, the E_speed perseverance is 1 device;
Be to gather the engine speed information apparatus;
5) do not judge that, the C1speed perseverance is 1 device;
Be to gather clutch 1 rotary speed information device;
6) do not judge that, the C2speed perseverance is 1 device;
Be to gather clutch 2 rotary speed information devices;
7) do not judge that, the Throttle perseverance is 1 device;
Be to gather the throttle opening information apparatus;
8) do not judge that, the G_select perseverance is 1 device;
Be control gear selecting mechanism arrangement;
9) do not judge that, the G_shift perseverance is 1 device;
Be control gearshift mechanism device;
10) do not judge that, the Clutch1 perseverance is 1 device;
Be solenoidoperated cluthes 1 arrangements for speed regulation;
11) do not judge that, the Clutch2 perseverance is 1 device;
Be solenoidoperated cluthes 2 arrangements for speed regulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100458734A CN101122334A (en) | 2007-09-12 | 2007-09-12 | Double-clutch automatic speed-changer electric controller and its control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100458734A CN101122334A (en) | 2007-09-12 | 2007-09-12 | Double-clutch automatic speed-changer electric controller and its control method |
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| Publication Number | Publication Date |
|---|---|
| CN101122334A true CN101122334A (en) | 2008-02-13 |
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|---|---|---|---|
| CNA2007100458734A Pending CN101122334A (en) | 2007-09-12 | 2007-09-12 | Double-clutch automatic speed-changer electric controller and its control method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922545A (en) * | 2010-08-20 | 2010-12-22 | 上海汽车变速器有限公司 | Self-adaption gear shifting device for double-clutch automatic gearbox and realizing method thereof |
| CN101985976A (en) * | 2010-07-23 | 2011-03-16 | 浙江吉利汽车研究院有限公司 | Automobile auxiliary gearshift control system and control method |
| CN102022523A (en) * | 2010-12-15 | 2011-04-20 | 同济大学 | Electrical control unit and control method of automatic transmission |
| CN101487501B (en) * | 2009-03-04 | 2011-06-22 | 同济大学 | Semi-physical real-time hybrid simulation platform and simulation method for single-PC wet-type dual-clutch transmission |
| CN102230531A (en) * | 2011-04-08 | 2011-11-02 | 浙江万里扬变速器股份有限公司 | Electronic control system of dual-clutch automatic transmission |
| CN102619970A (en) * | 2011-01-28 | 2012-08-01 | 同济大学 | Electronic control unit for dry-type 5-speed-grade double clutch transmission and application thereof |
| CN101614277B (en) * | 2009-07-30 | 2013-01-16 | 中国一拖集团有限公司 | Electrical control unit of tractor dynamic power shift gear box |
| CN103206528A (en) * | 2013-02-27 | 2013-07-17 | 东风汽车有限公司 | Double-clutch signal processing system |
| CN104279310A (en) * | 2014-09-05 | 2015-01-14 | 联合汽车电子有限公司 | Control system of dual-clutch transmission case and implementation method thereof |
| CN104633086A (en) * | 2013-11-12 | 2015-05-20 | 陕西国力信息技术有限公司 | Gear selecting control assembly based on AMT system |
| CN107255159A (en) * | 2017-05-18 | 2017-10-17 | 上海蔚来汽车有限公司 | The shift control method and shifting control system of two-gear automatic speed changing case |
| CN107575568A (en) * | 2017-10-19 | 2018-01-12 | 山东时风（集团）有限责任公司 | Electric automobile double speed automatic transmission electronic control unit and control strategy |
| CN110953336A (en) * | 2019-12-25 | 2020-04-03 | 苏州绿控传动科技股份有限公司 | Automatic gear shifting control method for AMT (automated mechanical transmission) |
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- 2007-09-12 CN CNA2007100458734A patent/CN101122334A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101487501B (en) * | 2009-03-04 | 2011-06-22 | 同济大学 | Semi-physical real-time hybrid simulation platform and simulation method for single-PC wet-type dual-clutch transmission |
| CN101614277B (en) * | 2009-07-30 | 2013-01-16 | 中国一拖集团有限公司 | Electrical control unit of tractor dynamic power shift gear box |
| CN101985976A (en) * | 2010-07-23 | 2011-03-16 | 浙江吉利汽车研究院有限公司 | Automobile auxiliary gearshift control system and control method |
| CN101922545A (en) * | 2010-08-20 | 2010-12-22 | 上海汽车变速器有限公司 | Self-adaption gear shifting device for double-clutch automatic gearbox and realizing method thereof |
| CN101922545B (en) * | 2010-08-20 | 2013-07-24 | 上海汽车变速器有限公司 | Self-adaption gear shifting device for double-clutch automatic gearbox and realizing method thereof |
| CN102022523A (en) * | 2010-12-15 | 2011-04-20 | 同济大学 | Electrical control unit and control method of automatic transmission |
| CN102022523B (en) * | 2010-12-15 | 2013-06-26 | 同济大学 | Electrical control unit and control method of automatic transmission |
| CN102619970B (en) * | 2011-01-28 | 2015-03-04 | 同济大学 | Electronic control unit for dry-type 5-speed-grade double clutch transmission and application thereof |
| CN102619970A (en) * | 2011-01-28 | 2012-08-01 | 同济大学 | Electronic control unit for dry-type 5-speed-grade double clutch transmission and application thereof |
| CN102230531A (en) * | 2011-04-08 | 2011-11-02 | 浙江万里扬变速器股份有限公司 | Electronic control system of dual-clutch automatic transmission |
| CN103206528A (en) * | 2013-02-27 | 2013-07-17 | 东风汽车有限公司 | Double-clutch signal processing system |
| CN104633086A (en) * | 2013-11-12 | 2015-05-20 | 陕西国力信息技术有限公司 | Gear selecting control assembly based on AMT system |
| CN104279310A (en) * | 2014-09-05 | 2015-01-14 | 联合汽车电子有限公司 | Control system of dual-clutch transmission case and implementation method thereof |
| CN104279310B (en) * | 2014-09-05 | 2017-01-18 | 联合汽车电子有限公司 | Control system of dual-clutch transmission case and implementation method thereof |
| CN107255159A (en) * | 2017-05-18 | 2017-10-17 | 上海蔚来汽车有限公司 | The shift control method and shifting control system of two-gear automatic speed changing case |
| CN107575568A (en) * | 2017-10-19 | 2018-01-12 | 山东时风（集团）有限责任公司 | Electric automobile double speed automatic transmission electronic control unit and control strategy |
| CN110953336A (en) * | 2019-12-25 | 2020-04-03 | 苏州绿控传动科技股份有限公司 | Automatic gear shifting control method for AMT (automated mechanical transmission) |
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