WO2023072293A1 - Adaptive control method and apparatus for main oil pressure, device, and storage medium - Google Patents
Adaptive control method and apparatus for main oil pressure, device, and storage medium Download PDFInfo
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- WO2023072293A1 WO2023072293A1 PCT/CN2022/128846 CN2022128846W WO2023072293A1 WO 2023072293 A1 WO2023072293 A1 WO 2023072293A1 CN 2022128846 W CN2022128846 W CN 2022128846W WO 2023072293 A1 WO2023072293 A1 WO 2023072293A1
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- pressure
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- clutch
- safety factor
- main oil
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- 238000004590 computer program Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/066—Control of fluid pressure, e.g. using an accumulator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
Definitions
- the present application relates to the technical field of automobile oil pressure control, for example, to a main oil pressure adaptive control method, device, equipment and storage medium.
- the transmission actuator is a scheme for driving the clutch and synchronizer.
- the engine drives the mechanical oil pump to provide the oil circuit pressure in the hydraulic system.
- the pressure of the main oil circuit (that is, the pressure of the oil circuit in the hydraulic system) provides the pressing force for the clutch, and the clutch plate can transmit the engine torque under the action of the pressing force.
- the pressure of the main oil circuit is required to be greater than the torque transmitted by the clutch. A certain safety margin factor is required for the pressure, so as to ensure that the clutch disc is under sufficient pressure for torque transmission when the oil circuit leaks or the pressure changes rapidly.
- the synchronizer When the synchronizer removes and engages gears, it also needs the pressure of the main oil circuit to provide the execution pressure, so as to ensure the normal execution of removing and engaging gears.
- the mechanical oil pump is driven by the engine, and the engine speed is constantly changing with different vehicle speeds and gears. The higher the engine speed, the higher the pressure building capacity of the mechanical oil pump, and the less affected by the flow demand of the hydraulic system.
- the transmission actuator needs stable and continuous main oil circuit pressure.
- the stable and continuous main oil circuit pressure is achieved by hydraulic pressure. There is an automatic adjustment of the flow regulating valve inside the valve body of the system, so that the pressure of the main oil circuit is only regulated by the pressure solenoid valve of the main oil circuit, so as to avoid being affected by the fluctuation of the engine speed.
- the critical pressure of the main oil circuit pressure is defined as the pressure value that enables the clutch to be locked and just pressed tightly to avoid slipping. Since most automatic transmissions of hydraulic systems do not install main oil circuit pressure sensors in order to reduce costs, the actual and accurate value of the main oil circuit pressure cannot be obtained. Therefore, in the control method of the main oil circuit pressure, it is usually realized by adding a safety margin coefficient on the basis of the critical pressure, so as to compensate for the inconsistency of the pressure response caused by the mechanical differences of the multiple boxes of the automatic transmission. At the same time, ensure that there is sufficient main oil circuit pressure to meet the pressure requirements of clutch transmission torque pressure and synchronizer de-engagement. The pressure of the main oil circuit is one of the important factors affecting the transmission efficiency of the automatic transmission of the hydraulic system.
- the increase of the pressure of the main oil circuit will increase the load of the mechanical oil pump and increase the load of the automatic transmission at the same time, resulting in the transmission of the automatic transmission Reduced efficiency. Therefore, the increased safety margin factor is realized on the basis of sacrificing the transmission efficiency of the automatic transmission.
- the above method involves increasing the pressure safety margin factor. If the increased pressure is too high, the transmission efficiency of the automatic transmission will decrease. If the increased pressure is too low, the pressure in the main oil circuit will be insufficient, which will affect the normal operation of the hydraulic system.
- the present application provides a main oil pressure self-adaptive control method, device, equipment and storage medium to solve the problem of increasing the value of the pressure safety factor in the related art. If the increased pressure is too high, the transmission efficiency of the automatic transmission will decrease. If it is too low, the pressure of the main oil circuit will be insufficient, which will affect the normal operation of the hydraulic system.
- a main oil pressure adaptive control method includes:
- a main oil pressure adaptive control device includes:
- the vehicle state judging module is configured to judge whether the vehicle enters a steady-state driving state
- the demand pressure value setting module is configured to set the value of the clutch demand pressure as the actual pressure control value of the main oil circuit in response to the vehicle entering a steady-state driving state;
- An adaptive growth control condition judging module is configured to judge whether the adaptive growth control condition is satisfied
- a quick adjustment module configured to quickly adjust the value of the clutch demand pressure according to the first adaptive pressure safety factor and the quick compensation pressure safety factor in response to satisfying the adaptive growth control condition;
- the clutch state judging module is configured to judge whether the clutch returns to a normal state
- a dynamic growth adjustment module configured to cancel the fast compensation pressure safety factor and perform dynamic growth adjustment on the first adaptive pressure safety factor in response to the clutch returning to a normal state
- An adaptive control module configured to perform adaptive control.
- a device includes a memory, a processor, and a computer program stored in the memory and run on the processor.
- the processor executes the computer program, the above-mentioned main oil pressure adaptive control method is implemented.
- a storage medium stores a computer program, and the computer program causes the computer to execute the above-mentioned main oil pressure adaptive control method.
- FIG. 1 is a schematic flow chart of a main oil pressure adaptive control method according to Embodiment 1 of the present application;
- Fig. 2 is a schematic flow chart of the main oil pressure adaptive control method in Embodiment 2 of the present application;
- Fig. 3 is a schematic structural diagram of the main oil pressure adaptive control device according to Embodiment 3 of the present application.
- FIG. 4 is a schematic structural diagram of the device in Embodiment 4 of the present application.
- connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
- connection can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
- a first feature being "on” or “under” a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them.
- “above”, “above” and “above” the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
- “Below”, “beneath” and “under” the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
- This embodiment provides a main oil pressure adaptive control method, see Figure 1, the method includes:
- Step S100 judging whether the vehicle enters a steady-state driving state.
- the clutch in an unsteady driving state, for example, when the automatic transmission changes from one gear to another after the vehicle starts or the gear shifting process is over, the clutch’s transmission torque demand pressure before that is constantly changing , the actual pressure of the clutch is also changing accordingly. At this time, it is not easy to judge whether the current pressure of the main oil circuit has affected the clutch pressure.
- the clutch demand pressure (that is, the clutch transmission torque demand pressure) refers to the pressing force required by the vehicle to maintain the clutch in the current state
- the actual clutch pressure refers to the pressing force actually provided by the main oil circuit pressure for the clutch.
- Step S200 if the vehicle enters a steady-state driving state, set the value of the clutch demand pressure as the actual pressure control value of the main oil circuit.
- the main oil circuit pressure work demand mode is divided into the demand pressure P actuation of gear removal, the demand pressure P reverse of reverse gear, the demand pressure P hot of the heat mode, and the clutch demand pressure P involved in the first embodiment.
- Clutch mode There are simultaneous demands in these four modes, and the maximum value among the four is selected as the actual pressure control value of the main oil circuit, namely:
- P main max(P actuation , P reverse , P hot , P clutch ).
- the demand pressure P actuation for removing and engaging gears is defined as follows: the main oil pressure adaptive control device receives the demand pressure value sent from the control module for removing and engaging gears as the demand pressure for the main oil pressure.
- the pressure value is not 0 when there is a demand action request for gear removal and engagement, and the pressure value is 0 when there is no demand action request for gear removal and engagement.
- the gear-removal control module is responsible for controlling the gear-removal of the vehicle.
- the reverse demand pressure P reverse is defined as follows: the main oil pressure adaptive control device obtains whether the current driver's handle is in the reverse state, if the current driver's handle is in the reverse state, then in the reverse state according to The corresponding reverse gear pressure data stored in the main oil pressure adaptive control device is used as the reverse gear demand pressure, and the reverse gear demand pressure is one of the required values for selecting the actual pressure control value of the main oil circuit; In the reverse gear state, the value of the reverse gear demand pressure is 0.
- the thermal mode demand pressure P hot is defined as follows: the main oil pressure adaptive control device obtains the internal oil temperature state of the automatic transmission and the clutch temperature state, if at least one of the internal oil temperature state and the clutch temperature state of the automatic transmission is overheated state, the corresponding thermal mode pressure data stored in the main oil pressure adaptive control device is used as the thermal mode demand pressure, and the thermal mode demand pressure is one of the required values for selecting the actual pressure control value of the main oil circuit. If the automatic transmission Neither the internal oil temperature state nor the clutch temperature state has an over-temperature state, and the value of the demand pressure in this thermal mode is 0.
- the clutch demand pressure P clutch For the clutch demand pressure P clutch , based on the classification of the clutch demand pressure required in the transmission torque of the clutch during the working process of the automatic transmission, the clutch demand pressure P clutch is divided into two categories: the first category is the demand under the clutch disengagement state The pressure P clutchOff , the second category is the demand pressure P clutchOn in the clutch engagement state.
- Step S300 judging whether the self-adaptive growth control condition is satisfied.
- step S300 needs to determine whether the deviation between the clutch demand pressure and the clutch actual pressure is greater than the first pressure deviation threshold P err_thr1 ; determine whether the change rate of the clutch demand pressure is less than the first preset change rate; determine whether the clutch demand is satisfied at the same time Whether the deviation between the pressure and the clutch actual pressure is greater than the first pressure deviation threshold value P err_thr1 and the rate of change of the clutch demand pressure is less than the first preset rate of change, whether the duration T err_check reaches the first preset duration.
- the two conditions are met at the same time, and the continuous When the time T err_check reaches the first preset duration, the adaptive growth control condition is met.
- the actual pressure of the clutch is measured by the clutch pressure sensor. Due to the influence of the accuracy of the clutch pressure sensor, the measured actual pressure of the clutch will have certain slight fluctuations. At the same time, when the clutch demand pressure changes rapidly, the response of the actual clutch pressure There is some pressure response delay.
- the actual pressure control value of the main oil circuit is directly adjusted according to the known first adaptive pressure safety factor.
- Step S400 in response to satisfying the adaptive increase control condition, quickly adjust the value of the clutch demand pressure according to the first adaptive pressure safety factor and the quick compensation pressure safety factor.
- the fast compensation pressure safety factor P FastPID (n) is limited by the deviation e(t) between the clutch demand pressure and the clutch actual pressure, the proportional adjustment coefficient K p and the integral adjustment coefficient K i of the PI controller, and the integral time t.
- the quick compensation pressure safety factor is calculated by the following formula:
- P FastPID (n) represents the fast compensation pressure safety factor
- e(t) represents the deviation between the clutch demand pressure and the clutch actual pressure
- K p represents the proportional adjustment coefficient of the proportional-integral PI controller
- K i represents the integral of the PI controller Adjustment coefficient
- t represents the integration time.
- this embodiment adds a fast compensation pressure safety coefficient P FastPID (n) to the clutch demand pressure P clutch , realizing the clutch Rapid compensation of the required pressure, and then increase the actual pressure control value of the main oil circuit to ensure that the main oil circuit pressure has enough pressure to provide a pressure source for the clutch.
- Step S500 judging whether the clutch returns to a normal state.
- Step S600 if the clutch returns to a normal state, cancel the quick compensation pressure safety factor, and dynamically increase the first adaptive pressure safety factor.
- the current fast compensation pressure safety factor P FastPID (n) starts to work only after the adaptive control flag is triggered and enabled, when the deviation between the clutch demand pressure and the clutch actual pressure is less than or equal to the first pressure deviation threshold After value P err_thr1 , the adaptive control flag is triggered to turn off the adaptive control, reverting to the normal control method. Therefore, in order to avoid the above situation and repeatedly perform rapid compensation on the clutch demand pressure, it is necessary to dynamically increase and adjust the first adaptive pressure safety factor, so as to ensure sufficient main oil circuit pressure to provide pressure for the clutch.
- the normal state of the clutch means that the deviation between the clutch demand pressure and the clutch actual pressure is less than or equal to the first pressure deviation threshold.
- step S600 includes adding the first adaptive pressure safety coefficient P adpt (n) to the adaptive growth step P fixstep to obtain the second adaptive pressure safety coefficient P adpt (n2):
- P adpt (n2) P adpt (n) + P fixstep .
- the current first adaptive pressure safety coefficient P adpt (n) is replaced by the second adaptive pressure safety coefficient P adpt (n2).
- the adaptively adjusted second adaptive pressure safety coefficient P adpt (n2) is stored in the main oil pressure adaptive control device, and the original value is updated and replaced.
- the second adaptive pressure safety coefficient P adpt (n2) is used as the first adaptive pressure safety coefficient P adpt ( n).
- the first adaptive pressure safety factor P adpt (n) is adjusted through an adaptive growth step. Considering that the first adaptive pressure safety factor P adpt (n) is a unidirectional growth adjustment, it is necessary to limit the adjusted first 2 The maximum value of the adaptive pressure safety factor.
- the limit value of P adpt (n) is stored inside the main oil pressure adaptive control device, and the data range of the second adaptive pressure safety factor is reasonably set according to needs.
- the overrun average value of the pressure deviation refers to the average value of the deviation between the clutch demand pressure and the actual clutch pressure exceeding the first pressure deviation threshold P err_thr1 within the detection period value;
- the adaptive growth step P fixstep is determined according to the pressure deviation exceeding the average value P err_avr . It should be noted that the determination of the adaptive growth step size P fixstep based on the pressure deviation exceeding the limit average value P err_avr is obtained according to the look-up table, and the following table shows the pressure deviation exceeding the limit average value P err_avr and the adaptive growth step Correspondence table of long P fixstep .
- the adaptive growth step size can be obtained, and then the first adaptive pressure safety factor can be updated.
- Step S700 completing the adaptive control.
- the value of the clutch demand pressure is set as the actual pressure control value of the main oil circuit, so as to meet the clutch working conditions.
- the clutch can be adjusted according to the first adaptive pressure safety factor and the fast compensation pressure safety factor.
- the value of the demand pressure is quickly adjusted to ensure that there is enough pressure to provide a pressure source for the clutch.
- the first self-adaptive pressure safety factor is dynamically increased and adjusted to realize automatic learning, which can be used in the hydraulic system next time. Ensure stable clutch torque transmission requirements during operation, and ensure the normal operation of the system function.
- This embodiment provides a main oil pressure adaptive control method, see Figure 2, the method includes:
- the clutch starts to transmit torque, and the gear of the car is fixed, it is judged that the vehicle enters a steady-state driving state.
- step S201 If the vehicle enters the steady-state driving state, proceed to step S201, and set the value of the clutch demand pressure as the actual pressure control value of the main oil circuit.
- the main oil circuit pressure work demand mode is divided into the demand pressure P actuation of gear removal, the demand pressure P reverse of reverse gear, the demand pressure P hot of the heat mode, and the clutch demand pressure P involved in the first embodiment.
- the demand pressure P actuation for removing and engaging gears is defined as follows: the main oil pressure adaptive control device receives the demand pressure value sent from the control module for removing and engaging gears as the demand pressure for the main oil pressure.
- the pressure value is not 0 when there is a demand action request for detachment and hooking, and the pressure value is 0 when there is no demand action request for detachment and hooking.
- the reverse demand pressure P reverse is defined as follows: the main oil pressure adaptive control device obtains whether the current driver's handle is in the reverse state, if the current driver's handle is in the reverse state, then in the reverse state according to The reverse gear pressure data stored in the main oil pressure adaptive control device is used as the reverse gear demand pressure, and the reverse gear demand pressure is one of the required values for selecting the actual pressure control value of the main oil circuit. In the reverse gear state, the value of the reverse gear demand pressure is 0;
- the thermal mode demand pressure P hot is defined as follows: the main oil pressure adaptive control device obtains the internal oil temperature state of the automatic transmission and the clutch temperature state, if at least one of the internal oil temperature state and the clutch temperature state of the automatic transmission is overheated state, the thermal mode pressure data stored in the main oil pressure adaptive control device is used as the thermal mode demand pressure, and the thermal mode demand pressure is one of the required values for selecting the actual pressure control value of the main oil circuit. Neither the oil temperature state nor the clutch temperature state has an over-temperature state, and the value of the demand pressure in this thermal mode is 0.
- the clutch demand pressure P clutch is divided into two categories based on the different forms of the clutch in the working process of the automatic transmission: the first category is the clutch separation state P clutchOff , and the second category is the clutch engagement State PclutchOn .
- the main oil pressure adaptive control device obtains the current clutch state: if the clutch is in the oil filling state or the clutch shift is in progress, according to the oil filling pressure safety factor value P clutchFill stored in the main oil pressure adaptive control device, get Clutch theoretical demand pressure P ChReq! , and the sum of the filling pressure safety factor value P clutchFill is taken as the demand pressure P clutchOn in the clutch engagement state, and the demand pressure P clutchOn in the above clutch engagement state is taken as the required value for selecting the actual pressure control value of the main oil circuit in this state one.
- Step S301 judging whether the self-adaptive growth control condition is satisfied.
- step S301 needs to determine whether the deviation between the clutch demand pressure and the clutch actual pressure is greater than the first pressure deviation threshold P err_thr1 ; determine whether the change rate of the clutch demand pressure is less than the first preset change rate; determine whether the clutch demand is satisfied at the same time Whether the deviation between the pressure and the clutch actual pressure is greater than the first pressure deviation threshold value P err_thr1 and the rate of change of the clutch demand pressure is less than the first preset rate of change, whether the duration T err_check reaches the first preset duration.
- the two conditions are met at the same time, and the continuous When the time T err_check reaches the first preset duration, the adaptive growth control condition is satisfied.
- the actual pressure of the clutch is measured by the clutch pressure sensor. Due to the influence of the accuracy of the clutch pressure sensor, the measured actual pressure of the clutch will have certain slight fluctuations. At the same time, when the clutch demand pressure changes rapidly, the response of the actual clutch pressure There is some pressure response delay.
- the first adaptive pressure safety factor is set to the value of the clutch demand pressure in the steady state, and the first adaptive pressure safety factor is used as the actual pressure control of the main oil circuit value, namely:
- the first adaptive pressure safety factor P adpt (n) is a main oil circuit pressure safety factor stored in the main oil pressure adaptive control device after adaptive control learning, that is, a known parameter.
- step S401 is performed to quickly adjust the value of the clutch demand pressure according to the first self-adaptive pressure safety factor and the quick compensation pressure safety factor.
- the fast compensation pressure safety coefficient P FastPID (n) is limited by the deviation e(t), the proportional adjustment coefficient K p of the PI controller, the integral adjustment coefficient K i and the integral time t, and the fast compensation pressure safety coefficient is defined by the following formula Calculate to get:
- Step S501 judging whether the clutch returns to a normal state.
- Step S601 if the clutch returns to a normal state, cancel the quick compensation pressure safety factor, and dynamically increase the first adaptive pressure safety factor.
- the current fast compensation pressure safety factor P FastPID (n) starts to work only after the adaptive control flag is triggered and enabled, when the deviation between the clutch demand pressure and the clutch actual pressure is less than or equal to the first pressure deviation threshold After the value Perr_thr1 , the adaptive control flag triggers off adaptive control. Therefore, in order to avoid the above situation and repeatedly perform rapid compensation on the clutch demand pressure, it is necessary to dynamically increase and adjust the first adaptive pressure safety coefficient P FastPID (n), so as to ensure sufficient main oil circuit pressure to provide pressure for the clutch.
- step S601 includes adding the first adaptive pressure safety coefficient P adpt (n) to the adaptive growth step P fixstep to obtain the second adaptive pressure safety coefficient P adpt (n2):
- P adpt (n2) P adpt (n) + P fixstep .
- the second adaptive pressure safety factor P adpt (n2) is obtained after the current first adaptive pressure safety factor is updated, and is used as the new first adaptive pressure safety factor in the continuing steps P adpt (n).
- the first adaptive pressure safety factor P adpt (n) is adjusted through an adaptive growth step. Considering that the first adaptive pressure safety factor P adpt (n) is a unidirectional growth adjustment, it is necessary to limit the adjusted first 2 The maximum value of the adaptive pressure safety factor.
- the limit value of P adpt (n) is stored inside the main oil pressure adaptive control device, and the limit value is set reasonably according to needs.
- the adaptive growth step P fixstep is determined according to the pressure deviation exceeding the limit average value P err_avr .
- the determination of the adaptive growth step size P fixstep based on the pressure deviation exceeding the limit average value P err_avr is obtained according to the look-up table, and the following table shows the pressure deviation exceeding the limit average value P err_avr and the adaptive growth step Correspondence table of long P fixstep .
- Step S701 judging whether the adaptive reduction control condition is satisfied.
- steps S101-S601 will cause the first adaptive pressure safety factor to increase continuously, and when it increases to a certain extent, the main oil circuit pressure will be too high, and the self-adaptive adjustment will not be achieved. Purpose.
- step S701 includes:
- the vehicle If the number of driving cycles reaches the first preset number and the gearbox is working in a fixed gear, the vehicle is in a stable situation in gear, the target gear clutch is in a synchronous non-slip state, and the rate of change of the clutch demand pressure is less than the second preset rate of change And the duration reaches the second preset duration, it is determined that the adaptive reduction control condition is satisfied.
- Step S801 if the adaptive reduction control condition is satisfied, dynamically reduce the first adaptive pressure safety coefficient P adpt (n).
- the ever-increasing first adaptive pressure safety factor will lead to too high pressure in the main oil circuit, which may lead to failure to achieve the optimal purpose of adaptive adjustment.
- the optimal Excellent effect By reducing the first adaptive pressure safety factor to a reasonable range, the optimal Excellent effect.
- Step S801 includes, for example:
- the adaptive drop step size P drop_adp is obtained according to the fixed drop step size P drop_step and the number of drop step sizes N total_cnt .
- the first adaptive pressure safety factor P adpt (n) is subtracted from the adaptive drop step size P drop_adp .
- the subtraction result of the first adaptive pressure safety coefficient P adpt (n) and the adaptive reduction step P drop_adp is determined as the first Three adaptive pressure safety factor P adpt (n3).
- the current first adaptive pressure safety coefficient P adpt (n) is then replaced by the aforementioned third adaptive pressure safety coefficient P adpt (n3). It can be understood that the third adaptive pressure safety coefficient P adpt (n3) replaces the current first adaptive pressure safety coefficient P adpt (n) as the first adaptive pressure safety coefficient P adpt ( n).
- the adaptive drop step size P drop_adp is determined as follows: according to the product of the fixed drop step size P drop_step and the number of drop step sizes N total_cnt , the adaptive drop step size P drop_adp is obtained by referring to the table below.
- step S801 After step S801 ends, go to step S901 to complete the adaptive control.
- the value of the clutch demand pressure is set as the actual pressure control value of the main oil circuit to meet the clutch working conditions.
- the clutch demand can be adjusted according to the first adaptive pressure safety factor and the fast compensation pressure safety factor.
- the value of the pressure is quickly adjusted to ensure that there is enough pressure to provide a pressure source for the clutch.
- the first self-adaptive pressure safety factor is dynamically increased and adjusted to realize automatic learning. Adapt to the pressure safety factor for dynamic reduction and adjustment to avoid excessive pressure in the main oil circuit, so as to ensure stable clutch torque transmission requirements during the next operation and ensure the normal operation of the system function.
- present embodiment provides a kind of main oil pressure self-adaptive control device, comprises vehicle status judging module 10, demand pressure value setting module 20, adaptive growth control condition judging module 30, quick adjustment module 40, clutch state Judgment module 50 , dynamic growth adjustment module 60 and adaptive control module 70 .
- the vehicle state judging module is configured to judge whether the vehicle enters a steady-state driving state;
- the demand pressure value setting module is configured to set the value of the clutch demand pressure to control the actual pressure of the main oil circuit in response to the vehicle entering a steady-state driving state value;
- the adaptive growth control condition judging module is set to judge whether the adaptive growth control condition is satisfied;
- the fast adjustment module is set to respond to the adaptive growth control condition, according to the first adaptive pressure safety factor and the fast compensation pressure safety factor to the clutch The value of the demand pressure is quickly adjusted;
- the clutch state judging module is set to judge whether the clutch returns to a normal state;
- the dynamic growth adjustment module is set to respond to the clutch returning to a normal state, cancel the fast compensation pressure safety factor, and adjust the first adaptive pressure
- the safety factor is dynamically increased and adjusted;
- the adaptive control module is set to complete the adaptive control.
- the device sets the value of the clutch demand pressure as the actual pressure control value of the main oil circuit, so as to meet the clutch working conditions.
- the clutch demand pressure can be adjusted according to the first adaptive pressure safety factor and the fast compensation pressure safety factor. Quickly adjust the value to ensure that there is enough pressure to provide a pressure source for the clutch.
- the first self-adaptive pressure safety factor is adjusted dynamically to realize automatic learning and to ensure a stable pressure in the next operation.
- the torque transmission requirements of the clutch ensure the normal operation of the system function.
- present embodiment provides a kind of equipment, and this equipment comprises memory 11, processor 21 and the computer program that is stored on memory 11 and can run on processor 21, realizes above-mentioned when processor 21 executes described program.
- Main oil pressure adaptive control method Main oil pressure adaptive control method.
- a device in an optional embodiment, and the device includes: a processor 21 and a memory 11 . Wherein, the processor 21 is connected to the memory 11, such as through a bus.
- the device may also include a transceiver. It should be noted that in practical applications, the transceiver is not limited to one, and the structure of the device does not limit the embodiment of the present application.
- the processor can be a central processing unit (Central Processing Unit, CPU), a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof.
- the processor may implement or execute the various exemplary logical blocks, modules and circuits described in connection with the present disclosure.
- the processor can also be a combination of computing functions, for example, a combination of at least one microprocessor, a combination of a DSP and a microprocessor, and the like.
- a bus may include a path for transferring information between the above-mentioned components.
- the bus may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA) bus or the like.
- PCI Peripheral Component Interconnect
- EISA Extended Industry Standard Architecture
- the bus can be divided into address bus, data bus, control bus and so on.
- Memory can be read-only memory (Read Only Memory, ROM) or other types of static storage devices that can store static information and instructions, random access memory (Random Access Memory, RAM) or other types of dynamic memory devices that can store information and instructions
- the storage device can also be Electrically Erasable Programmable Read Only Memory (EEPROM), Compact Disc Read Only Memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc , Laser Disc, Optical Disc, Digital Versatile Disc, Blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any Other media, but not limited to.
- EEPROM Electrically Erasable Programmable Read Only Memory
- CD-ROM Compact Disc Read Only Memory
- CD-ROM Compact Disc Read Only Memory
- optical disc storage including compact disc , Laser Disc, Optical Disc, Digital Versatile Disc, Blu-ray Disc, etc.
- magnetic disk storage media or other magnetic storage devices, or any Other media, but not limited to.
- the memory is configured to store the application program code for executing the solution of the present application, and the execution is controlled by the processor.
- the processor is configured to execute the computer program stored in the memory, so as to realize the contents shown in the foregoing method embodiments.
- the device sets the value of the clutch demand pressure as the actual pressure control value of the main oil circuit to meet the clutch working conditions.
- the clutch demand pressure can be adjusted according to the first adaptive pressure safety factor and the fast compensation pressure safety factor. Quickly adjust the value to ensure that there is enough pressure to provide a pressure source for the clutch.
- the first self-adaptive pressure safety factor is dynamically increased and adjusted to realize automatic learning, which can ensure a stable clutch in the next operation. Torque transmission requirements to ensure the normal operation of the system functions.
- An embodiment of the present application provides a storage medium, and the storage medium stores computer instructions, and the computer program causes the computer to execute the above-mentioned main oil pressure adaptive control method.
- the storage medium sets the value of the clutch demand pressure as the actual pressure control value of the main oil circuit to meet the clutch working conditions.
- the clutch demand pressure can be adjusted according to the first adaptive pressure safety factor and the fast compensation pressure safety factor. Quickly adjust the value to ensure that there is enough pressure to provide a pressure source for the clutch.
- the first self-adaptive pressure safety factor is adjusted dynamically to realize automatic learning and to ensure a stable pressure in the next operation.
- the torque transmission requirements of the clutch ensure the normal operation of the system function.
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Abstract
An adaptive control method and apparatus for a main oil pressure, a device, and a storage medium. The control method comprises: determining whether a vehicle enters a steady-state driving state; in response to the fact that the vehicle enters the steady-state driving state, setting a pressure value demanded by a clutch as the actual pressure control value of a main oil path; determining whether an adaptive growth control condition is satisfied; rapidly adjusting, according to a first adaptive pressure safety coefficient and a rapid compensation pressure safety coefficient, the pressure value demanded by the clutch; determining whether a clutch is recovered to a normal state; in response to the fact that the clutch is recovered to the normal state, canceling the rapid compensation pressure safety coefficient, and performing dynamic growth adjustment on the first adaptive pressure safety coefficient; and completing adaptive control.
Description
本申请要求在2021年11月1日提交中国专利局、申请号为202111281708.5的中国专利申请的优先权,该申请的全部内容通过引用结合在本申请中。This application claims priority to a Chinese patent application with application number 202111281708.5 filed with the China Patent Office on November 1, 2021, the entire contents of which are incorporated herein by reference.
本申请涉及汽车油压控制技术领域,例如涉及一种主油压自适应控制方法、装置、设备及存储介质。The present application relates to the technical field of automobile oil pressure control, for example, to a main oil pressure adaptive control method, device, equipment and storage medium.
自动变速器普遍使用液压***作为变速器执行机构,变速器执行机构为离合器和同步器执行驱动的方案,由发动机带动机械油泵来提供液压***中的油路压力。主油路压力(即液压***中的油路压力)为离合器提供压紧力,离合器片在压紧力作用下可以实现对发动机扭矩进行传递,实现发动机扭矩传递要求主油路压力大于离合器传扭需求压力一定的安全余量系数,以此保证油路在泄漏及压力快速变化时,离合器片受到足够压力进行传扭。同步器进行摘挂挡同样需要主油路压力提供执行压力,以保证摘挂挡正常执行。机械油泵由发动机带动,发动机转速随着不同的车速、挡位,在不断变化。发动机转速越高,机械油泵的建压能力就越高,受液压***流量需求的影响就越小,变速器执行机构需要稳定持续的主油路压力,稳定持续的主油路压力的实现方式是液压***阀体内部存在流量调节阀自动调节,使主油路压力仅受主油路压力电磁阀调节,避免受到发动机转速波动的影响。主油路压力的临界压力定义为使离合器可以达到闭锁、刚好压紧,避免打滑的情况发生的压力值。由于大部分液压***的自动变速箱为减少成本而不安装主油路压力传感器,因此无法获得主油路压力实际准确值。所以在主油路压力的控制方法上,通常采用在临界压力的基础上增加安全余量系数的方法实现,以此来弥补自动变速箱多个箱体由于机械 上的差异所导致的压力响应不一致情况,同时保证有足够的主油路压力以满足离合器传扭压力与同步器摘挂挡的压力需求。主油路压力的高低是影响液压***的自动变速箱的传动效率的重要因素之一,主油路压力增加,会加大机械油泵的负载,同时增加自动变速箱的负载,导致自动变速箱传动效率降低。因此,所增加的安全余量系数,是在牺牲自动变速箱的传动效率的基础上实现的。Automatic transmissions generally use the hydraulic system as the transmission actuator. The transmission actuator is a scheme for driving the clutch and synchronizer. The engine drives the mechanical oil pump to provide the oil circuit pressure in the hydraulic system. The pressure of the main oil circuit (that is, the pressure of the oil circuit in the hydraulic system) provides the pressing force for the clutch, and the clutch plate can transmit the engine torque under the action of the pressing force. To realize the transmission of the engine torque, the pressure of the main oil circuit is required to be greater than the torque transmitted by the clutch. A certain safety margin factor is required for the pressure, so as to ensure that the clutch disc is under sufficient pressure for torque transmission when the oil circuit leaks or the pressure changes rapidly. When the synchronizer removes and engages gears, it also needs the pressure of the main oil circuit to provide the execution pressure, so as to ensure the normal execution of removing and engaging gears. The mechanical oil pump is driven by the engine, and the engine speed is constantly changing with different vehicle speeds and gears. The higher the engine speed, the higher the pressure building capacity of the mechanical oil pump, and the less affected by the flow demand of the hydraulic system. The transmission actuator needs stable and continuous main oil circuit pressure. The stable and continuous main oil circuit pressure is achieved by hydraulic pressure. There is an automatic adjustment of the flow regulating valve inside the valve body of the system, so that the pressure of the main oil circuit is only regulated by the pressure solenoid valve of the main oil circuit, so as to avoid being affected by the fluctuation of the engine speed. The critical pressure of the main oil circuit pressure is defined as the pressure value that enables the clutch to be locked and just pressed tightly to avoid slipping. Since most automatic transmissions of hydraulic systems do not install main oil circuit pressure sensors in order to reduce costs, the actual and accurate value of the main oil circuit pressure cannot be obtained. Therefore, in the control method of the main oil circuit pressure, it is usually realized by adding a safety margin coefficient on the basis of the critical pressure, so as to compensate for the inconsistency of the pressure response caused by the mechanical differences of the multiple boxes of the automatic transmission. At the same time, ensure that there is sufficient main oil circuit pressure to meet the pressure requirements of clutch transmission torque pressure and synchronizer de-engagement. The pressure of the main oil circuit is one of the important factors affecting the transmission efficiency of the automatic transmission of the hydraulic system. The increase of the pressure of the main oil circuit will increase the load of the mechanical oil pump and increase the load of the automatic transmission at the same time, resulting in the transmission of the automatic transmission Reduced efficiency. Therefore, the increased safety margin factor is realized on the basis of sacrificing the transmission efficiency of the automatic transmission.
为降低成本同时保证足够的主油路压力需求,通常采用不加装主油路压力传感器并在实际所需要的压力基础上上调固定的安全余量系数的方式,以此来保证主油路压力在无主油路压力传感器的开环控制中可正常工作,保证液压***有足够的压力源。In order to reduce the cost and ensure sufficient main oil circuit pressure demand, it is usually adopted to not install the main oil circuit pressure sensor and increase the fixed safety margin coefficient on the basis of the actual required pressure, so as to ensure the main oil circuit pressure It can work normally in the open-loop control without main oil circuit pressure sensor to ensure that the hydraulic system has sufficient pressure source.
然而,上述方式涉及上调压力安全余量系数,若上调压力过高,则导致自动变速箱传动效率下降,若上调压力过低,则导致主油路压力不足,影响液压***正常工作。However, the above method involves increasing the pressure safety margin factor. If the increased pressure is too high, the transmission efficiency of the automatic transmission will decrease. If the increased pressure is too low, the pressure in the main oil circuit will be insufficient, which will affect the normal operation of the hydraulic system.
发明内容Contents of the invention
本申请提供一种主油压自适应控制方法、装置、设备及存储介质,以解决相关技术中通过上调压力安全系数数值,若上调压力过高,则导致自动变速箱传动效率下降,若上调压力过低,则导致主油路压力不足,影响液压***正常工作的问题。The present application provides a main oil pressure self-adaptive control method, device, equipment and storage medium to solve the problem of increasing the value of the pressure safety factor in the related art. If the increased pressure is too high, the transmission efficiency of the automatic transmission will decrease. If it is too low, the pressure of the main oil circuit will be insufficient, which will affect the normal operation of the hydraulic system.
本申请采用以下技术方案:This application adopts the following technical solutions:
第一方面,一种主油压自适应控制方法,包括:In the first aspect, a main oil pressure adaptive control method includes:
判断车辆是否进入稳态行驶状态;Determine whether the vehicle has entered a steady-state driving state;
响应于车辆进入稳态行驶状态,将离合器需求压力的值设置为主油路实际压力控制值;In response to the vehicle entering a steady-state driving state, setting the value of the clutch demand pressure as the actual pressure control value of the main oil circuit;
判断是否满足自适应增长控制条件;Judging whether the adaptive growth control condition is satisfied;
响应于满足自适应增长控制条件,根据第一自适应压力安全系数和快速补偿压力安全系数对所述离合器需求压力的值进行快速调整;In response to satisfying the adaptive growth control condition, quickly adjusting the value of the clutch demand pressure according to the first adaptive pressure safety factor and the fast compensation pressure safety factor;
判断离合器是否恢复到正常状态;Judging whether the clutch returns to normal state;
响应于离合器恢复到正常状态,取消所述快速补偿压力安全系数,并对所述第一自适应压力安全系数进行动态增长调整;In response to the clutch returning to a normal state, canceling the rapid compensation pressure safety factor, and performing a dynamic growth adjustment on the first adaptive pressure safety factor;
完成自适应控制。Complete adaptive control.
第二方面,一种主油压自适应控制装置,包括:In the second aspect, a main oil pressure adaptive control device includes:
车辆状态判断模块,设置为判断车辆是否进入稳态行驶状态;The vehicle state judging module is configured to judge whether the vehicle enters a steady-state driving state;
需求压力值设定模块,设置为响应于车辆进入稳态行驶状态,将离合器需求压力的值设置为主油路实际压力控制值;The demand pressure value setting module is configured to set the value of the clutch demand pressure as the actual pressure control value of the main oil circuit in response to the vehicle entering a steady-state driving state;
自适应增长控制条件判断模块,设置为判断是否满足自适应增长控制条件;An adaptive growth control condition judging module is configured to judge whether the adaptive growth control condition is satisfied;
快速调整模块,设置为响应于满足自适应增长控制条件,根据第一自适应压力安全系数和快速补偿压力安全系数对所述离合器需求压力的值进行快速调整;A quick adjustment module, configured to quickly adjust the value of the clutch demand pressure according to the first adaptive pressure safety factor and the quick compensation pressure safety factor in response to satisfying the adaptive growth control condition;
离合器状态判断模块,设置为判断离合器是否恢复到正常状态;The clutch state judging module is configured to judge whether the clutch returns to a normal state;
动态增长调整模块,设置为响应于离合器恢复到正常状态,取消所述快速补偿压力安全系数,并对所述第一自适应压力安全系数进行动态增长调整;A dynamic growth adjustment module, configured to cancel the fast compensation pressure safety factor and perform dynamic growth adjustment on the first adaptive pressure safety factor in response to the clutch returning to a normal state;
自适应控制模块,设置为完成自适应控制。An adaptive control module, configured to perform adaptive control.
第三方面,一种设备,包括存储器、处理器及存储在存储器上并在处理器上运行的计算机程序,所述处理器执行所述计算机程序时实现上述的主油压自适应控制方法。According to a third aspect, a device includes a memory, a processor, and a computer program stored in the memory and run on the processor. When the processor executes the computer program, the above-mentioned main oil pressure adaptive control method is implemented.
第四方面,一种存储介质,所述存储介质存储计算机程序,所述计算机程序使所述计算机执行上述的主油压自适应控制方法。According to a fourth aspect, a storage medium stores a computer program, and the computer program causes the computer to execute the above-mentioned main oil pressure adaptive control method.
图1是本申请实施例一的主油压自适应控制方法的流程示意图;FIG. 1 is a schematic flow chart of a main oil pressure adaptive control method according to Embodiment 1 of the present application;
图2是本申请实施例二的主油压自适应控制方法的流程示意图;Fig. 2 is a schematic flow chart of the main oil pressure adaptive control method in Embodiment 2 of the present application;
图3是本申请实施例三的主油压自适应控制装置的结构示意图;Fig. 3 is a schematic structural diagram of the main oil pressure adaptive control device according to Embodiment 3 of the present application;
图4是本申请实施例四的设备的结构示意图。FIG. 4 is a schematic structural diagram of the device in Embodiment 4 of the present application.
下面结合附图和实施例对本申请作详细说明。The application will be described in detail below in conjunction with the accompanying drawings and embodiments.
在本申请的描述中,除非另有明确的规定和限定,术语“相连”、“连接”、“固定”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本申请中的具体含义。In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.
在本申请中,除非另有明确的规定和限定,第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触,也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且,第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方,或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方,或仅仅表示第一特征水平高度小于第二特征。In this application, unless otherwise expressly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
在本实施例的描述中,术语“上”、“下”、“右”、等方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述和简化操作,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本申请的限制。此外,术语“第一”、“第二”仅仅用于在描述上加以区分,并没有特殊的含义。In the description of this embodiment, the terms "up", "down", "right", and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operations, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the application. In addition, the terms "first" and "second" are only used to distinguish in description, and have no special meaning.
实施例一:Embodiment one:
本实施例提供一种主油压自适应控制方法,参见图1,该方法包括:This embodiment provides a main oil pressure adaptive control method, see Figure 1, the method includes:
步骤S100、判断车辆是否进入稳态行驶状态。Step S100 , judging whether the vehicle enters a steady-state driving state.
示例性地,若离合器完成充油,离合器开始传递扭矩,汽车挡位固定,则 判断车辆进入稳态行驶状态。Exemplarily, if the clutch completes oil filling, the clutch starts to transmit torque, and the vehicle gear is fixed, then it is judged that the vehicle enters a steady-state driving state.
需要说明的是,在非稳态行驶状态,例如,自动变速箱在车辆起步或者换挡过程结束后从一个挡位变换为另外一个挡位时,离合器在这之前的传递扭矩需求压力在不断变化,离合器实际压力也在跟随变化,此时不易判定当前主油路压力是否影响了离合器压力。离合器需求压力(即离合器传递扭矩需求压力)是指车辆维持当前状态离合器所需的压紧力,离合器实际压力是指主油路压力实际为离合器提供的压紧力。It should be noted that in an unsteady driving state, for example, when the automatic transmission changes from one gear to another after the vehicle starts or the gear shifting process is over, the clutch’s transmission torque demand pressure before that is constantly changing , the actual pressure of the clutch is also changing accordingly. At this time, it is not easy to judge whether the current pressure of the main oil circuit has affected the clutch pressure. The clutch demand pressure (that is, the clutch transmission torque demand pressure) refers to the pressing force required by the vehicle to maintain the clutch in the current state, and the actual clutch pressure refers to the pressing force actually provided by the main oil circuit pressure for the clutch.
步骤S200、若车辆进入稳态行驶状态,将离合器需求压力的值设置为主油路实际压力控制值。Step S200 , if the vehicle enters a steady-state driving state, set the value of the clutch demand pressure as the actual pressure control value of the main oil circuit.
需要说明的是,通常情况下,主油路压力工需模式分为摘挂挡需求压力P
actuation、倒挡需求压力P
reverse、热模式需求压力P
hot和本实施例一涉及的离合器需求压力P
clutch模式。这四种模式存在同时需求的情况,选取四个中的最大值作为主油路实际压力控制值,即:
It should be noted that, under normal circumstances, the main oil circuit pressure work demand mode is divided into the demand pressure P actuation of gear removal, the demand pressure P reverse of reverse gear, the demand pressure P hot of the heat mode, and the clutch demand pressure P involved in the first embodiment. Clutch mode. There are simultaneous demands in these four modes, and the maximum value among the four is selected as the actual pressure control value of the main oil circuit, namely:
P
main=max(P
actuation、P
reverse、P
hot、P
clutch)。
P main = max(P actuation , P reverse , P hot , P clutch ).
其中,摘挂挡需求压力P
actuation是这样限定的:主油压自适应控制装置接收来自摘挂挡控制模块所发送过来的需求压力值,作为主油压需求压力。有摘挂挡需求动作请求时,该压力值不为0,无摘挂挡需求动作请求时,该压力值为0。其中,摘挂挡控制模块负责对车辆摘挂挡进行控制。
Wherein, the demand pressure P actuation for removing and engaging gears is defined as follows: the main oil pressure adaptive control device receives the demand pressure value sent from the control module for removing and engaging gears as the demand pressure for the main oil pressure. The pressure value is not 0 when there is a demand action request for gear removal and engagement, and the pressure value is 0 when there is no demand action request for gear removal and engagement. Wherein, the gear-removal control module is responsible for controlling the gear-removal of the vehicle.
倒挡需求压力P
reverse是这样限定的:主油压自适应控制装置获取当前驾驶员手柄工作状态是否为倒挡状态,若当前驾驶员手柄工作状态为倒挡状态,则在倒挡状态下依据主油压自适应控制装置中所存储的对应倒挡压力数据作为倒挡需求压力,倒挡需求压力是选取主油路实际压力控制值的所需值之一;若当前驾驶员手柄工作状态不为倒挡状态,则倒挡需求压力的值为0。
The reverse demand pressure P reverse is defined as follows: the main oil pressure adaptive control device obtains whether the current driver's handle is in the reverse state, if the current driver's handle is in the reverse state, then in the reverse state according to The corresponding reverse gear pressure data stored in the main oil pressure adaptive control device is used as the reverse gear demand pressure, and the reverse gear demand pressure is one of the required values for selecting the actual pressure control value of the main oil circuit; In the reverse gear state, the value of the reverse gear demand pressure is 0.
热模式需求压力P
hot是这样限定的:主油压自适应控制装置获取自动变速箱内部油温状态和离合器温度状态,如果自动变速箱内部油温状态和离合器温 度状态中至少之一出现超温状态,就将主油压自适应控制装置中所存储的对应热模式压力数据作为热模式需求压力,热模式需求压力是选取主油路实际压力控制值的所需值之一,若自动变速箱内部油温状态和离合器温度状态均未出现超温状态,该热模式需求压力的值为0。
The thermal mode demand pressure P hot is defined as follows: the main oil pressure adaptive control device obtains the internal oil temperature state of the automatic transmission and the clutch temperature state, if at least one of the internal oil temperature state and the clutch temperature state of the automatic transmission is overheated state, the corresponding thermal mode pressure data stored in the main oil pressure adaptive control device is used as the thermal mode demand pressure, and the thermal mode demand pressure is one of the required values for selecting the actual pressure control value of the main oil circuit. If the automatic transmission Neither the internal oil temperature state nor the clutch temperature state has an over-temperature state, and the value of the demand pressure in this thermal mode is 0.
对于离合器需求压力P
clutch而言,基于自动变速箱工作过程中离合器传递扭矩中所需求的离合器需求压力情况分类,将离合器需求压力P
clutch划分为两类:第一类是离合器分离状态下的需求压力P
clutchOff,第二类是离合器结合状态下的需求压力P
clutchOn。
For the clutch demand pressure P clutch , based on the classification of the clutch demand pressure required in the transmission torque of the clutch during the working process of the automatic transmission, the clutch demand pressure P clutch is divided into two categories: the first category is the demand under the clutch disengagement state The pressure P clutchOff , the second category is the demand pressure P clutchOn in the clutch engagement state.
离合器结合状态下的需求压力P
clutchOn:在离合器结合状态下,离合器理论需求压力P
ChReq!=0,主油压自适应控制装置获取当前离合器状态:如果离合器是充油状态或离合器换挡进行中,依据主油压自适应控制装置中所存储的充油压力安全系数值P
clutchFill,得到离合器理论需求压力P
ChReq!与充油压力安全系数值P
clutchFill之和作为离合器结合状态下的需求压力P
clutchOn,将上述离合器结合状态下的需求压力P
clutchOn作为该状态下选取主油路实际压力控制值的所需值之一。需要注意的是,本申请可以应用于双离合器的情况下,因此,在步骤S100所述的车辆进入稳态行驶状态的情况下,其中第一离合器处于稳定的离合器传扭状态时,第二离合器可以处于冲油状态或离合器换挡进行中。
Demand pressure P clutchOn in the state of clutch engagement: In the state of clutch engagement, the theoretical demand pressure P ChReq of the clutch! = 0, the main oil pressure adaptive control device obtains the current clutch state: if the clutch is in the oil filling state or the clutch shift is in progress, according to the oil filling pressure safety factor value P clutchFill stored in the main oil pressure adaptive control device, get Clutch theoretical demand pressure P ChReq! The sum of the filling pressure safety factor value P clutchFill is taken as the demand pressure P clutchOn in the clutch engagement state, and the demand pressure P clutchOn in the above clutch engagement state is taken as one of the required values for selecting the actual pressure control value of the main oil circuit in this state one. It should be noted that this application can be applied to the case of dual clutches. Therefore, when the vehicle enters the steady-state driving state described in step S100, when the first clutch is in a stable clutch torque transmission state, the second clutch It can be in the oil flushing state or the clutch shifting is in progress.
步骤S300、判断是否满足自适应增长控制条件。Step S300, judging whether the self-adaptive growth control condition is satisfied.
示例性地,步骤S300需要判断离合器需求压力与离合器实际压力的偏差是否大于第一压力偏差门限值P
err_thr1;判断离合器需求压力的变化率是否小于第一预设变化率;判断同时满足离合器需求压力与离合器实际压力的偏差大于第一压力偏差门限值P
err_thr1以及离合器需求压力的变化率是小于第一预设变化率这两个条件的持续时间T
err_check是否到达第一预设时长。若同时满足离合器需求压力与离合器实际压力的偏差大于第一压力偏差门限值P
err_thr1且离合器需求压力的变化率小于第一预设变化率这两个条件,且同时满足这两个条件的 持续时间T
err_check到达第一预设时长,则满足自适应增长控制条件。
Exemplarily, step S300 needs to determine whether the deviation between the clutch demand pressure and the clutch actual pressure is greater than the first pressure deviation threshold P err_thr1 ; determine whether the change rate of the clutch demand pressure is less than the first preset change rate; determine whether the clutch demand is satisfied at the same time Whether the deviation between the pressure and the clutch actual pressure is greater than the first pressure deviation threshold value P err_thr1 and the rate of change of the clutch demand pressure is less than the first preset rate of change, whether the duration T err_check reaches the first preset duration. If the deviation between the clutch demand pressure and the clutch actual pressure is greater than the first pressure deviation threshold P err_thr1 and the change rate of the clutch demand pressure is less than the first preset change rate, the two conditions are met at the same time, and the continuous When the time T err_check reaches the first preset duration, the adaptive growth control condition is met.
需要说明的是,通过离合器压力传感器测量得到离合器实际压力,由于受离合器压力传感器的精度影响,测量得到的离合器实际压力会存在一定微小波动,同时在离合器需求压力快速变化时,离合器实际压力的响应存在一定的压力响应延迟。It should be noted that the actual pressure of the clutch is measured by the clutch pressure sensor. Due to the influence of the accuracy of the clutch pressure sensor, the measured actual pressure of the clutch will have certain slight fluctuations. At the same time, when the clutch demand pressure changes rapidly, the response of the actual clutch pressure There is some pressure response delay.
示例性的,若不满足自适应增长控制条件,则将第一自适应压力安全系数设置为离合器需求压力的值,同时将第一自适应压力安全系数作为主油路实际压力控制值,即P
clutchSteady=P
adpt(n)。其中,第一自适应压力安全系数P
adpt(n)为主油压自适应控制装置内经过自适应控制学习后存储的主油路压力安全系数,即已知参数。由于步骤S100中已经判断得到车辆处于稳态行驶状态,因此此时的离合器需求压力P
clutch=P
clutchSteady,P
clutchSteady表示稳态下的离合器需求压力。
Exemplarily, if the adaptive growth control condition is not satisfied, the first adaptive pressure safety factor is set as the value of the clutch demand pressure, and at the same time, the first adaptive pressure safety factor is used as the actual pressure control value of the main oil circuit, that is, P clutchSteady = Padpt (n). Wherein, the first adaptive pressure safety factor P adpt (n) is a main oil circuit pressure safety factor stored in the main oil pressure adaptive control device after adaptive control learning, that is, a known parameter. Since it has been determined in step S100 that the vehicle is in a steady-state driving state, the clutch demand pressure at this time P clutch =P clutchSteady , where P clutchSteady represents the clutch demand pressure in a steady state.
在不满足自适应增长控制条件的情况下,按照已知的第一自适应压力安全系数直接对主油路实际压力控制值进行调整。In the case that the adaptive increase control condition is not satisfied, the actual pressure control value of the main oil circuit is directly adjusted according to the known first adaptive pressure safety factor.
步骤S400、响应于满足自适应增长控制条件,根据第一自适应压力安全系数和快速补偿压力安全系数对离合器需求压力的值进行快速调整。Step S400 , in response to satisfying the adaptive increase control condition, quickly adjust the value of the clutch demand pressure according to the first adaptive pressure safety factor and the quick compensation pressure safety factor.
在满足自适应增长控制条件的情况下,激活主油压自适应控制装置对主油路实际压力控制值的自适应控制,在S400中离合器需求压力P
clutch=P
clutchSteady,当自适应控制激活后,P
clutchSteady由快速补偿压力安全系数P
FastPID(n)和第一自适应压力安全系数P
adpt(n)两部分组成:P
clutchSteady=P
FastPID(n)+P
adpt(n)。自适应控制激活后,即,自适应控制标志使能后,开始依据主油压自适应控制方法对P
clutchSteady进行动态调整。
In the case of satisfying the adaptive growth control condition, activate the adaptive control of the main oil pressure adaptive control device to the actual pressure control value of the main oil circuit, in S400 the clutch demand pressure P clutch =P clutchSteady , when the adaptive control is activated , P clutchSteady is composed of fast compensation pressure safety factor P FastPID (n) and first adaptive pressure safety factor P adpt (n): P clutchSteady =P FastPID (n)+P adpt (n). After the adaptive control is activated, that is, after the adaptive control flag is enabled, P clutchSteady is dynamically adjusted according to the main oil pressure adaptive control method.
其中,快速补偿压力安全系数P
FastPID(n)由离合器需求压力与离合器实际压力的偏差e(t)、PI控制器的比例调节系数K
p和积分调节系数K
i以及积分时间t限定,所述快速补偿压力安全系数通过以下公式计算获得:
Among them, the fast compensation pressure safety factor P FastPID (n) is limited by the deviation e(t) between the clutch demand pressure and the clutch actual pressure, the proportional adjustment coefficient K p and the integral adjustment coefficient K i of the PI controller, and the integral time t. The quick compensation pressure safety factor is calculated by the following formula:
其中,P
FastPID(n)代表快速补偿压力安全系数,e(t)表示离合器需求压力与离合器实际压力的偏差,K
p代表比例积分PI控制器的比例调节系数,K
i代表PI控制器的积分调节系数,t代表积分时间。
Among them, P FastPID (n) represents the fast compensation pressure safety factor, e(t) represents the deviation between the clutch demand pressure and the clutch actual pressure, K p represents the proportional adjustment coefficient of the proportional-integral PI controller, and K i represents the integral of the PI controller Adjustment coefficient, t represents the integration time.
相对于离合器需求压力P
clutch中只有第一自适应压力安全系数P
adpt(n)的情况,本实施例在离合器需求压力P
clutch中增加快速补偿压力安全系数P
FastPID(n),实现了对离合器需求压力的快速补偿,进而增加主油路实际压力控制值,以保证主油路压力有足够压力为离合器提供压力源。
Compared with the situation where there is only the first adaptive pressure safety coefficient P adpt (n) in the clutch demand pressure P clutch , this embodiment adds a fast compensation pressure safety coefficient P FastPID (n) to the clutch demand pressure P clutch , realizing the clutch Rapid compensation of the required pressure, and then increase the actual pressure control value of the main oil circuit to ensure that the main oil circuit pressure has enough pressure to provide a pressure source for the clutch.
需要说明的是,导致出现偏差e(t)的情况可能存在其他因素,如电磁阀电流与压力对应不准,主油路压力不足只是其中一个因素,所以需要控制快速补偿压力安全系数P
FastPID(n)输出的最大幅值,对P
FastPID(n)进行限幅处理。在主油压自适应控制装置内部存储快速补偿压力安全系数P
FastPID(n)的限幅数值,从而为快速补偿压力安全系数设定合理的数据范围。
It should be noted that there may be other factors that lead to the deviation e(t), such as the inaccurate correspondence between the solenoid valve current and the pressure, and insufficient pressure in the main oil circuit is only one of the factors, so it is necessary to control the fast compensation pressure safety factor P FastPID ( The maximum magnitude of n) output, and limit the P FastPID (n). The limit value of the fast compensation pressure safety factor P FastPID (n) is stored inside the main oil pressure adaptive control device, so as to set a reasonable data range for the fast compensation pressure safety factor.
步骤S500、判断离合器是否恢复到正常状态。Step S500, judging whether the clutch returns to a normal state.
步骤S600、若离合器恢复到正常状态,取消快速补偿压力安全系数,并对第一自适应压力安全系数进行动态增长调整。Step S600 , if the clutch returns to a normal state, cancel the quick compensation pressure safety factor, and dynamically increase the first adaptive pressure safety factor.
需要说明的是,当前的快速补偿压力安全系数P
FastPID(n)只在自适应控制标志触发使能后才开始工作,当离合器需求压力与离合器实际压力的偏差小于或等于第一压力偏差门限值P
err_thr1后,自适应控制标志触发关闭自适应控制,恢复到正常控制方法。因此,为了避免出现上述情况,重复对离合器需求压力进行快速补偿,需要对第一自适应压力安全系数进行动态增长调整,从而保证足够的主油路压力为离合器提供压力。其中,离合器的正常状态是指离合器需求压力与离合器实际压力的偏差值小于等于第一压力偏差门限值。
It should be noted that the current fast compensation pressure safety factor P FastPID (n) starts to work only after the adaptive control flag is triggered and enabled, when the deviation between the clutch demand pressure and the clutch actual pressure is less than or equal to the first pressure deviation threshold After value P err_thr1 , the adaptive control flag is triggered to turn off the adaptive control, reverting to the normal control method. Therefore, in order to avoid the above situation and repeatedly perform rapid compensation on the clutch demand pressure, it is necessary to dynamically increase and adjust the first adaptive pressure safety factor, so as to ensure sufficient main oil circuit pressure to provide pressure for the clutch. Wherein, the normal state of the clutch means that the deviation between the clutch demand pressure and the clutch actual pressure is less than or equal to the first pressure deviation threshold.
示例性地,步骤S600包括将第一自适应压力安全系数P
adpt(n)与自适应增长步长P
fixstep相加获得第二自适应压力安全系数P
adpt(n2):
Exemplarily, step S600 includes adding the first adaptive pressure safety coefficient P adpt (n) to the adaptive growth step P fixstep to obtain the second adaptive pressure safety coefficient P adpt (n2):
P
adpt(n2)=P
adpt(n)+P
fixstep。
P adpt (n2) = P adpt (n) + P fixstep .
之后,将第二自适应压力安全系数P
adpt(n2)替代当前的第一自适应压力安全系数P
adpt(n)。将经过自适应调整的第二自适应压力安全系数P
adpt(n2)存储到主油压自适应控制装置当中,并对原有数值进行更新替换。
Afterwards, the current first adaptive pressure safety coefficient P adpt (n) is replaced by the second adaptive pressure safety coefficient P adpt (n2). The adaptively adjusted second adaptive pressure safety coefficient P adpt (n2) is stored in the main oil pressure adaptive control device, and the original value is updated and replaced.
将第一自适应压力安全系数与自适应增长步长相加后确定第二自适应压力安全系数,使得相加更新后的自适应压力安全系数更大,主油路压力更高,保证***所有功能正常。Add the first adaptive pressure safety factor and the adaptive growth step to determine the second adaptive pressure safety factor, so that the added and updated adaptive pressure safety factor is larger and the pressure of the main oil circuit is higher, ensuring that all system functioning normally.
可以理解的是,第二自适应压力安全系数P
adpt(n2)替代当前的第一自适应压力安全系数P
adpt(n)后作为下次自适应控制的第一自适应压力安全系数P
adpt(n)。
It can be understood that the second adaptive pressure safety coefficient P adpt (n2) is used as the first adaptive pressure safety coefficient P adpt ( n).
第一自适应压力安全系数P
adpt(n)通过自适应增长步长进行调整,考虑到第一自适应压力安全系数P
adpt(n)是进行单方向的增长调整,因此需要限制调整后的第二自适应压力安全系数的最大值。在主油压自适应控制装置内部存储P
adpt(n)限幅数值,并根据需要合理地设定第二自适应压力安全系数的数据范围。
The first adaptive pressure safety factor P adpt (n) is adjusted through an adaptive growth step. Considering that the first adaptive pressure safety factor P adpt (n) is a unidirectional growth adjustment, it is necessary to limit the adjusted first 2 The maximum value of the adaptive pressure safety factor. The limit value of P adpt (n) is stored inside the main oil pressure adaptive control device, and the data range of the second adaptive pressure safety factor is reasonably set according to needs.
需要说明的是,自适应增长步长P
fixstep的确定步骤为:
It should be noted that the determination steps of the adaptive growth step P fixstep are:
获取检测时长T
err_check内的压力偏差超限平均值P
err_avr,所述压力偏差超限平均值是指检测时长内离合器需求压力与离合器实际压力的偏差超过第一压力偏差门限值P
err_thr1的平均值;
Obtain the overrun average value P err_avr of the pressure deviation within the detection period T err_check , the overrun average value of the pressure deviation refers to the average value of the deviation between the clutch demand pressure and the actual clutch pressure exceeding the first pressure deviation threshold P err_thr1 within the detection period value;
根据压力偏差超限平均值P
err_avr确定自适应增长步长P
fixstep。需要说明的是,根据压力偏差超限平均值P
err_avr确定自适应增长步长P
fixstep是根据查表获得的,下表为本申请实施例中压力偏差超限平均值P
err_avr与自适应增长步长P
fixstep的对应关系表。
The adaptive growth step P fixstep is determined according to the pressure deviation exceeding the average value P err_avr . It should be noted that the determination of the adaptive growth step size P fixstep based on the pressure deviation exceeding the limit average value P err_avr is obtained according to the look-up table, and the following table shows the pressure deviation exceeding the limit average value P err_avr and the adaptive growth step Correspondence table of long P fixstep .
P err_avr(bar) P err_avr (bar) | 0.20.2 | 0.40.4 | 0.60.6 | 0.80.8 | 1.01.0 | 1.21.2 | 1.41.4 |
P fixstep(bar) P fixstep (bar) | 00 | 00 | 0.40.4 | 0.60.6 | 0.80.8 | 0.80.8 | 0.80.8 |
通过上述步骤能够获得自适应增长步长,进而对第一自适应压力安全系数进行更新。Through the above steps, the adaptive growth step size can be obtained, and then the first adaptive pressure safety factor can be updated.
步骤S700、完成自适应控制。Step S700, completing the adaptive control.
本申请实施例将离合器需求压力的值设置为主油路实际压力控制值,从而满足离合器工况,激活自适应增长控制条件后能够根据第一自适应压力安全系数和快速补偿压力安全系数对离合器需求压力的值进行快速调整,以保证有足够压力为离合器提供压力源,当离合器恢复到正常状态后,对第一自适应压力安全系数进行动态增长调整,实现自动学习,能够在液压***下次运行时保证稳定的离合器传扭要求,保证***功能正常工作。In the embodiment of the present application, the value of the clutch demand pressure is set as the actual pressure control value of the main oil circuit, so as to meet the clutch working conditions. After activating the adaptive growth control condition, the clutch can be adjusted according to the first adaptive pressure safety factor and the fast compensation pressure safety factor. The value of the demand pressure is quickly adjusted to ensure that there is enough pressure to provide a pressure source for the clutch. When the clutch returns to the normal state, the first self-adaptive pressure safety factor is dynamically increased and adjusted to realize automatic learning, which can be used in the hydraulic system next time. Ensure stable clutch torque transmission requirements during operation, and ensure the normal operation of the system function.
实施例二:Embodiment two:
本实施例提供一种主油压自适应控制方法,参见图2,该方法包括:This embodiment provides a main oil pressure adaptive control method, see Figure 2, the method includes:
S101、判断车辆是否进入稳态行驶状态。S101. Determine whether the vehicle enters a steady-state driving state.
示例性地,若离合器完成充油,离合器开始传扭状态,汽车挡位固定,则判断车辆进入稳态行驶状态。Exemplarily, if the clutch is filled with oil, the clutch starts to transmit torque, and the gear of the car is fixed, it is judged that the vehicle enters a steady-state driving state.
需要说明的是,自动变速箱在车辆起步或者换挡过程结束后,从一个挡位变换为另外一个挡位时,离合器在这之前的传递扭矩需求压力在不断变化,离合器实际压力也在跟随变化,此时不易判定当前主油路压力是否影响了离合器压力。It should be noted that when the automatic transmission shifts from one gear to another after the vehicle starts or the shifting process is over, the torque demand pressure of the clutch before that is constantly changing, and the actual pressure of the clutch is also changing accordingly. , it is not easy to determine whether the current main oil circuit pressure has affected the clutch pressure.
若车辆进入稳态行驶状态,则进行步骤S201、将离合器需求压力的值设置为主油路实际压力控制值。If the vehicle enters the steady-state driving state, proceed to step S201, and set the value of the clutch demand pressure as the actual pressure control value of the main oil circuit.
需要说明的是,通常情况下,主油路压力工需模式分为摘挂挡需求压力P
actuation、倒挡需求压力P
reverse、热模式需求压力P
hot和本实施例一涉及的离合器需求压力P
clutch模式。这四种模式存在同时需求的情况,选取四个中的最大值作为主油路实际压力控制值,即:P
main=max(P
actuation、P
reverse、P
hot、P
clutch)。
It should be noted that, under normal circumstances, the main oil circuit pressure work demand mode is divided into the demand pressure P actuation of gear removal, the demand pressure P reverse of reverse gear, the demand pressure P hot of the heat mode, and the clutch demand pressure P involved in the first embodiment. Clutch mode. There are simultaneous demands in these four modes, and the maximum value among the four is selected as the actual pressure control value of the main oil circuit, namely: P main =max(P actuation , Preverse , P hot , P clutch ).
其中,摘挂挡需求压力P
actuation是这样限定的:主油压自适应控制装置接收来自摘挂挡控制模块所发送过来的需求压力值,作为主油压需求压力。有摘挂需求动作请求时,该压力值不为0,无摘挂需求动作请求时,该压力值为0。
Wherein, the demand pressure P actuation for removing and engaging gears is defined as follows: the main oil pressure adaptive control device receives the demand pressure value sent from the control module for removing and engaging gears as the demand pressure for the main oil pressure. The pressure value is not 0 when there is a demand action request for detachment and hooking, and the pressure value is 0 when there is no demand action request for detachment and hooking.
倒挡需求压力P
reverse是这样限定的:主油压自适应控制装置获取当前驾驶员手柄工作状态是否为倒挡状态,若当前驾驶员手柄工作状态为倒挡状态,则在倒挡状态下依据主油压自适应控制装置中所存储的倒挡压力数据作为倒挡需求压力,倒挡需求压力是选取主油路实际压力控制值的所需值之一,若当前驾驶员手柄工作状态不为倒挡状态,则倒挡需求压力的值为0;
The reverse demand pressure P reverse is defined as follows: the main oil pressure adaptive control device obtains whether the current driver's handle is in the reverse state, if the current driver's handle is in the reverse state, then in the reverse state according to The reverse gear pressure data stored in the main oil pressure adaptive control device is used as the reverse gear demand pressure, and the reverse gear demand pressure is one of the required values for selecting the actual pressure control value of the main oil circuit. In the reverse gear state, the value of the reverse gear demand pressure is 0;
热模式需求压力P
hot是这样限定的:主油压自适应控制装置获取自动变速箱内部油温状态和离合器温度状态,如果自动变速箱内部油温状态和离合器温度状态中至少之一出现超温状态,就将主油压自适应控制装置中所存储的热模式压力数据作为热模式需求压力,热模式需求压力是选取主油路实际压力控制值的所需值之一,若自动变速箱内部油温状态和离合器温度状态均未出现超温状态,该热模式需求压力的值为0。
The thermal mode demand pressure P hot is defined as follows: the main oil pressure adaptive control device obtains the internal oil temperature state of the automatic transmission and the clutch temperature state, if at least one of the internal oil temperature state and the clutch temperature state of the automatic transmission is overheated state, the thermal mode pressure data stored in the main oil pressure adaptive control device is used as the thermal mode demand pressure, and the thermal mode demand pressure is one of the required values for selecting the actual pressure control value of the main oil circuit. Neither the oil temperature state nor the clutch temperature state has an over-temperature state, and the value of the demand pressure in this thermal mode is 0.
对于离合器需求压力P
clutch而言,基于自动变速箱工作过程中离合器的不同形态进行分类,将离合器需求压力P
clutch划分为两类:第一类是离合器分离状态P
clutchOff,第二类是离合器结合状态P
clutchOn。
For the clutch demand pressure P clutch , the clutch demand pressure P clutch is divided into two categories based on the different forms of the clutch in the working process of the automatic transmission: the first category is the clutch separation state P clutchOff , and the second category is the clutch engagement State PclutchOn .
离合器结合状态下的需求压力P
clutchOn:在离合器结合状态下,离合器理论需求压力P
ChReq!=0,主油压自适应控制装置获取当前离合器状态:如果离合器是充油状态或离合器换挡进行中,依据主油压自适应控制装置中所存储的充油压力安全系数值P
clutchFill,得到离合器理论需求压力P
ChReq!,与充油压力安全系数值P
clutchFill之和作为离合器结合状态下的需求压力P
clutchOn,将上述离合器结合状态下的需求压力P
clutchOn作为该状态下选取主油路实际压力控制值的所需值之一。
Demand pressure P clutchOn in the state of clutch engagement: In the state of clutch engagement, the theoretical demand pressure P ChReq of the clutch! = 0, the main oil pressure adaptive control device obtains the current clutch state: if the clutch is in the oil filling state or the clutch shift is in progress, according to the oil filling pressure safety factor value P clutchFill stored in the main oil pressure adaptive control device, get Clutch theoretical demand pressure P ChReq! , and the sum of the filling pressure safety factor value P clutchFill is taken as the demand pressure P clutchOn in the clutch engagement state, and the demand pressure P clutchOn in the above clutch engagement state is taken as the required value for selecting the actual pressure control value of the main oil circuit in this state one.
步骤S301、判断是否满足自适应增长控制条件。Step S301, judging whether the self-adaptive growth control condition is satisfied.
示例性地,步骤S301需要判断离合器需求压力与离合器实际压力的偏差是否大于第一压力偏差门限值P
err_thr1;判断离合器需求压力的变化率是否小于第一预设变化率;判断同时满足离合器需求压力与离合器实际压力的偏差大于第 一压力偏差门限值P
err_thr1以及离合器需求压力的变化率是小于第一预设变化率这两个条件的持续时间T
err_check是否到达第一预设时长。若同时满足离合器需求压力与离合器实际压力的偏差大于第一压力偏差门限值P
err_thr1且离合器需求压力的变化率小于第一预设变化率这两个条件,且同时满足这两个条件的持续时间T
err_check到达第一预设时长,则满足自适应增长控制条件。
Exemplarily, step S301 needs to determine whether the deviation between the clutch demand pressure and the clutch actual pressure is greater than the first pressure deviation threshold P err_thr1 ; determine whether the change rate of the clutch demand pressure is less than the first preset change rate; determine whether the clutch demand is satisfied at the same time Whether the deviation between the pressure and the clutch actual pressure is greater than the first pressure deviation threshold value P err_thr1 and the rate of change of the clutch demand pressure is less than the first preset rate of change, whether the duration T err_check reaches the first preset duration. If the deviation between the clutch demand pressure and the clutch actual pressure is greater than the first pressure deviation threshold P err_thr1 and the change rate of the clutch demand pressure is less than the first preset change rate, the two conditions are met at the same time, and the continuous When the time T err_check reaches the first preset duration, the adaptive growth control condition is satisfied.
由于自动变速箱在车辆起步和换档时离合器的需求压力不断变化,离合器实际压力也在不断变化,只有满足上述条件时,才能判断当前主油路压力影响了离合器压力。Since the demand pressure of the clutch is constantly changing when the automatic transmission starts and shifts gears, the actual pressure of the clutch is also constantly changing. Only when the above conditions are met can it be judged that the current main oil circuit pressure has affected the clutch pressure.
需要说明的是,通过离合器压力传感器测量得到离合器实际压力,由于受离合器压力传感器的精度影响,测量得到的离合器实际压力会存在一定微小波动,同时在离合器需求压力快速变化时,离合器实际压力的响应存在一定的压力响应延迟。It should be noted that the actual pressure of the clutch is measured by the clutch pressure sensor. Due to the influence of the accuracy of the clutch pressure sensor, the measured actual pressure of the clutch will have certain slight fluctuations. At the same time, when the clutch demand pressure changes rapidly, the response of the actual clutch pressure There is some pressure response delay.
示例性的,若不满足自适应增长控制条件,则将第一自适应压力安全系数设置为稳态下的离合器需求压力的值,同时将第一自适应压力安全系数作为主油路实际压力控制值,即:Exemplarily, if the adaptive growth control condition is not satisfied, the first adaptive pressure safety factor is set to the value of the clutch demand pressure in the steady state, and the first adaptive pressure safety factor is used as the actual pressure control of the main oil circuit value, namely:
P
clutchSteady=P
adpt(n)。
P clutchSteady = Padpt (n).
其中,第一自适应压力安全系数P
adpt(n)为主油压自适应控制装置内经过自适应控制学习后存储的主油路压力安全系数,即已知参数。
Wherein, the first adaptive pressure safety factor P adpt (n) is a main oil circuit pressure safety factor stored in the main oil pressure adaptive control device after adaptive control learning, that is, a known parameter.
满足自适应增长控制条件后进行步骤S401、根据第一自适应压力安全系数和快速补偿压力安全系数对离合器需求压力的值进行快速调整。After the self-adaptive increase control condition is satisfied, step S401 is performed to quickly adjust the value of the clutch demand pressure according to the first self-adaptive pressure safety factor and the quick compensation pressure safety factor.
当自适应控制激活后,P
clutchSteady由快速补偿压力安全系数P
FastPID(n)和第一自适应压力安全系数P
adpt(n)两部分组成:P
clutchSteady=P
FastPID(n)+P
adpt(n)。自适应控制标志使能后,开始对P
clutchSteady进行动态调整。
When the adaptive control is activated, P clutchSteady is composed of two parts : P clutchSteady = P FastPID (n) + P adpt (n) ). After the adaptive control flag is enabled, it starts to dynamically adjust P clutchSteady .
其中,快速补偿压力安全系数P
FastPID(n)由偏差e(t)、PI控制器的比例调节系数K
p和积分调节系数K
i以及积分时间t限定,所述快速补偿压力安全系数通 过以下公式计算获得:
Wherein, the fast compensation pressure safety coefficient P FastPID (n) is limited by the deviation e(t), the proportional adjustment coefficient K p of the PI controller, the integral adjustment coefficient K i and the integral time t, and the fast compensation pressure safety coefficient is defined by the following formula Calculate to get:
增加快速补偿压力安全系数P
FastPID(n),实现了对离合器需求压力的快速补偿增加压力,以保证主油路压力有足够压力为离合器提供压力源。
Increase the fast compensation pressure safety factor P FastPID (n), realize the rapid compensation of the clutch demand pressure and increase the pressure to ensure that the main oil circuit pressure has enough pressure to provide a pressure source for the clutch.
需要说明的是,导致出现偏差e(t)的情况可能存在其他因素,如电磁阀电流与压力对应不准,主油路压力不足只是其中一个因素,所以需要控制快速补偿压力安全系数P
FastPID(n)输出最大幅值,对P
FastPID(n)进行限幅处理。在主油压自适应控制装置内部存储快速补偿压力安全系数P
FastPID(n)的限幅数值,从而为快速补偿压力安全系数设定合理的数据范围。
It should be noted that there may be other factors that lead to the deviation e(t), such as the inaccurate correspondence between the solenoid valve current and the pressure, and insufficient pressure in the main oil circuit is only one of the factors, so it is necessary to control the fast compensation pressure safety factor P FastPID ( n) Output the maximum magnitude, and perform limiting processing on P FastPID (n). The limit value of the fast compensation pressure safety factor P FastPID (n) is stored inside the main oil pressure adaptive control device, so as to set a reasonable data range for the fast compensation pressure safety factor.
步骤S501、判断离合器是否恢复到正常状态。Step S501, judging whether the clutch returns to a normal state.
步骤S601、若离合器恢复到正常状态,则取消快速补偿压力安全系数,并对第一自适应压力安全系数进行动态增长调整。Step S601 , if the clutch returns to a normal state, cancel the quick compensation pressure safety factor, and dynamically increase the first adaptive pressure safety factor.
需要说明的是,当前的快速补偿压力安全系数P
FastPID(n)只在自适应控制标志触发使能后才开始工作,当离合器需求压力与离合器实际压力的偏差小于或等于第一压力偏差门限值P
err_thr1后,自适应控制标志触发关闭自适应控制。因此,为了避免出现上述情况,重复对离合器需求压力进行快速补偿,需要对第一自适应压力安全系数P
FastPID(n)进行动态增长调整,从而保证足够的主油路压力为离合器提供压力。
It should be noted that the current fast compensation pressure safety factor P FastPID (n) starts to work only after the adaptive control flag is triggered and enabled, when the deviation between the clutch demand pressure and the clutch actual pressure is less than or equal to the first pressure deviation threshold After the value Perr_thr1 , the adaptive control flag triggers off adaptive control. Therefore, in order to avoid the above situation and repeatedly perform rapid compensation on the clutch demand pressure, it is necessary to dynamically increase and adjust the first adaptive pressure safety coefficient P FastPID (n), so as to ensure sufficient main oil circuit pressure to provide pressure for the clutch.
示例性地,步骤S601包括将第一自适应压力安全系数P
adpt(n)与自适应增长步长P
fixstep相加获得第二自适应压力安全系数P
adpt(n2):
Exemplarily, step S601 includes adding the first adaptive pressure safety coefficient P adpt (n) to the adaptive growth step P fixstep to obtain the second adaptive pressure safety coefficient P adpt (n2):
P
adpt(n2)=P
adpt(n)+P
fixstep。
P adpt (n2) = P adpt (n) + P fixstep .
可以理解的是,第二自适应压力安全系数P
adpt(n2)是经过当前的第一自适应压力安全系数更新后得到的,并在继续进行的步骤中作为新的第一自适应压力安全系数P
adpt(n)。
It can be understood that the second adaptive pressure safety factor P adpt (n2) is obtained after the current first adaptive pressure safety factor is updated, and is used as the new first adaptive pressure safety factor in the continuing steps P adpt (n).
第一自适应压力安全系数P
adpt(n)通过自适应增长步长进行调整,考虑到第 一自适应压力安全系数P
adpt(n)是进行单方向的增长调整,因此需要限制调整后的第二自适应压力安全系数的最大值。在主油压自适应控制装置内部存储P
adpt(n)限幅数值,并根据需要合理地设定该限幅数值。
The first adaptive pressure safety factor P adpt (n) is adjusted through an adaptive growth step. Considering that the first adaptive pressure safety factor P adpt (n) is a unidirectional growth adjustment, it is necessary to limit the adjusted first 2 The maximum value of the adaptive pressure safety factor. The limit value of P adpt (n) is stored inside the main oil pressure adaptive control device, and the limit value is set reasonably according to needs.
需要说明的是,自适应增长步长P
fixstep的确定步骤为:
It should be noted that the determination steps of the adaptive growth step P fixstep are:
获取检测时长T
err_check内的压力偏差超限平均值P
err_avr;
Obtain the over-limit average value P err_avr of the pressure deviation within the detection duration T err_check ;
根据压力偏差超限平均值P
err_avr确定自适应增长步长P
fixstep。
The adaptive growth step P fixstep is determined according to the pressure deviation exceeding the limit average value P err_avr .
需要说明的是,根据压力偏差超限平均值P
err_avr确定自适应增长步长P
fixstep是根据查表获得的,下表为本申请实施例中压力偏差超限平均值P
err_avr与自适应增长步长P
fixstep的对应关系表。
It should be noted that the determination of the adaptive growth step size P fixstep based on the pressure deviation exceeding the limit average value P err_avr is obtained according to the look-up table, and the following table shows the pressure deviation exceeding the limit average value P err_avr and the adaptive growth step Correspondence table of long P fixstep .
P err_avr(bar) P err_avr (bar) | 0.20.2 | 0.40.4 | 0.60.6 | 0.80.8 | 1.01.0 | 1.21.2 | 1.41.4 |
P fixstep(bar) P fixstep (bar) | 00 | 00 | 0.40.4 | 0.60.6 | 0.80.8 | 0.80.8 | 0.80.8 |
步骤S701、判断是否满足自适应降低控制条件。Step S701, judging whether the adaptive reduction control condition is satisfied.
需要说明的是,重复执行步骤S101-步骤S601会使得第一自适应压力安全系数不断增大,增大到一定程度后会导致主油路压力过高的情况发生,将无法达到自适应调整的目的。It should be noted that repeated execution of steps S101-S601 will cause the first adaptive pressure safety factor to increase continuously, and when it increases to a certain extent, the main oil circuit pressure will be too high, and the self-adaptive adjustment will not be achieved. Purpose.
示例性地,步骤S701包括:Exemplarily, step S701 includes:
判断驾驶循环次数是否达到第一预设次数N
cnt_thr,其中,驾驶循环次数是指重复执行步骤S601的次数,即对第一自适应压力安全系数进行动态增长调整的次数;
Judging whether the number of driving cycles reaches the first preset number of times N cnt_thr , wherein the number of driving cycles refers to the number of times step S601 is repeated, that is, the number of times for dynamically increasing and adjusting the first adaptive pressure safety factor;
判断自动变速箱是否在固定挡位工作,车辆是否处于在挡稳定形势、目标挡位离合器是否处于同步无滑差状态;Judging whether the automatic transmission is working in a fixed gear, whether the vehicle is in a stable situation in gear, and whether the target gear clutch is in a synchronous and non-slip state;
判断离合器需求压力的变化率是否小于第二预设变化率;judging whether the rate of change of the clutch demand pressure is less than a second preset rate of change;
判断持续时间是否到达第二预设时长T
drop_check;
Judging whether the duration reaches the second preset duration T drop_check ;
若驾驶循环次数达到第一预设次数且变速箱在固定挡位工作,车辆处于在挡稳定形势、目标挡位离合器处于同步无滑差状态且离合器需求压力的变化率 小于第二预设变化率且持续时间到达第二预设时长,则判断为满足自适应降低控制条件。If the number of driving cycles reaches the first preset number and the gearbox is working in a fixed gear, the vehicle is in a stable situation in gear, the target gear clutch is in a synchronous non-slip state, and the rate of change of the clutch demand pressure is less than the second preset rate of change And the duration reaches the second preset duration, it is determined that the adaptive reduction control condition is satisfied.
步骤S801、若满足自适应降低控制条件,则对第一自适应压力安全系数P
adpt(n)进行动态降低调整。
Step S801 , if the adaptive reduction control condition is satisfied, dynamically reduce the first adaptive pressure safety coefficient P adpt (n).
不断增长的第一自适应压力安全系数会导致主油路压力过高,可能导致无法达到自适应调整的最优目的,通过降低第一自适应压力安全系数到合理范围,保持自适应调整的最优效果。The ever-increasing first adaptive pressure safety factor will lead to too high pressure in the main oil circuit, which may lead to failure to achieve the optimal purpose of adaptive adjustment. By reducing the first adaptive pressure safety factor to a reasonable range, the optimal Excellent effect.
步骤S801例如包括:Step S801 includes, for example:
以固定降低步长P
drop_step逐渐降低主油路压力并记录降低步长次数N
total_cnt。
Gradually reduce the main oil circuit pressure with a fixed step size P drop_step and record the number of steps down N total_cnt .
根据固定降低步长P
drop_step和降低步长次数N
total_cnt获得自适应降低步长P
drop_adp。
The adaptive drop step size P drop_adp is obtained according to the fixed drop step size P drop_step and the number of drop step sizes N total_cnt .
将第一自适应压力安全系数P
adpt(n)与自适应降低步长P
drop_adp相减。
The first adaptive pressure safety factor P adpt (n) is subtracted from the adaptive drop step size P drop_adp .
判断离合器实际压力与离合器需求压力的偏差是否超过第二压力偏差门限值P
err_thr2。
It is judged whether the deviation between the actual pressure of the clutch and the required pressure of the clutch exceeds the second pressure deviation threshold P err_thr2 .
若离合器实际压力与离合器需求压力的偏差超过第二压力偏差门限值P
err_thr2,则将第一自适应压力安全系数P
adpt(n)与自适应降低步长P
drop_adp的相减结果确定为第三自适应压力安全系数P
adpt(n3)。之后由上述第三自适应压力安全系数P
adpt(n3)替代当前的第一自适应压力安全系数P
adpt(n)。可以理解的是,第三自适应压力安全系数P
adpt(n3)替代当前的第一自适应压力安全系数P
adpt(n)后作为下次自适应控制的第一自适应压力安全系数P
adpt(n)。
If the deviation between the actual clutch pressure and the clutch demand pressure exceeds the second pressure deviation threshold P err_thr2 , the subtraction result of the first adaptive pressure safety coefficient P adpt (n) and the adaptive reduction step P drop_adp is determined as the first Three adaptive pressure safety factor P adpt (n3). The current first adaptive pressure safety coefficient P adpt (n) is then replaced by the aforementioned third adaptive pressure safety coefficient P adpt (n3). It can be understood that the third adaptive pressure safety coefficient P adpt (n3) replaces the current first adaptive pressure safety coefficient P adpt (n) as the first adaptive pressure safety coefficient P adpt ( n).
需要说明的是,自适应降低步长P
drop_adp是这样确定的:根据固定降低步长P
drop_step和降低步长次数N
total_cnt的乘积对照下表得到自适应降低步长P
drop_adp。
It should be noted that the adaptive drop step size P drop_adp is determined as follows: according to the product of the fixed drop step size P drop_step and the number of drop step sizes N total_cnt , the adaptive drop step size P drop_adp is obtained by referring to the table below.
P drop_adp*N total_cnt(bar) P drop_adp *N total_cnt (bar) | 22 | 2.52.5 | 33 | 3.53.5 | 44 | 4.54.5 | 5.55.5 |
P drop_adp(bar) P drop_adp (bar) | 00 | 00 | 0.20.2 | 0.30.3 | 0.40.4 | 0.50.5 | 0.50.5 |
步骤S801结束后,进行步骤S901、完成自适应控制。After step S801 ends, go to step S901 to complete the adaptive control.
本申请实施例将离合器需求压力的值设置为主油路实际压力控制值从而满足离合器工况,激活自适应增长控制条件后能够根据第一自适应压力安全系数和快速补偿压力安全系数对离合器需求压力的值进行快速调整,以保证有足够压力为离合器提供压力源,当离合器恢复到正常状态后,对第一自适应压力安全系数进行动态增长调整,实现自动学习,另外,还对第一自适应压力安全系数进行动态降低调整,避免主油路压力过高,从而能够在下次运行时保证稳定的离合器传扭要求,保证***功能正常工作。In the embodiment of the present application, the value of the clutch demand pressure is set as the actual pressure control value of the main oil circuit to meet the clutch working conditions. After the adaptive growth control condition is activated, the clutch demand can be adjusted according to the first adaptive pressure safety factor and the fast compensation pressure safety factor. The value of the pressure is quickly adjusted to ensure that there is enough pressure to provide a pressure source for the clutch. When the clutch returns to a normal state, the first self-adaptive pressure safety factor is dynamically increased and adjusted to realize automatic learning. Adapt to the pressure safety factor for dynamic reduction and adjustment to avoid excessive pressure in the main oil circuit, so as to ensure stable clutch torque transmission requirements during the next operation and ensure the normal operation of the system function.
实施例三:Embodiment three:
参见附图3,本实施例提供一种主油压自适应控制装置,包括车辆状态判断模块10、需求压力值设定模块20、自适应增长控制条件判断模块30、快速调整模块40、离合器状态判断模块50、动态增长调整模块60和自适应控制模块70。Referring to accompanying drawing 3, present embodiment provides a kind of main oil pressure self-adaptive control device, comprises vehicle status judging module 10, demand pressure value setting module 20, adaptive growth control condition judging module 30, quick adjustment module 40, clutch state Judgment module 50 , dynamic growth adjustment module 60 and adaptive control module 70 .
示例性地,车辆状态判断模块设置为判断车辆是否进入稳态行驶状态;需求压力值设定模块设置为响应于车辆进入稳态行驶状态,将离合器需求压力的值设置为主油路实际压力控制值;自适应增长控制条件判断模块设置为判断是否满足自适应增长控制条件;快速调整模块设置为响应于满足自适应增长控制条件,根据第一自适应压力安全系数和快速补偿压力安全系数对离合器需求压力的值进行快速调整;离合器状态判断模块设置为判断离合器是否恢复到正常状态;动态增长调整模块设置为响应于离合器恢复到正常状态,取消快速补偿压力安全系数,并对第一自适应压力安全系数进行动态增长调整;自适应控制模块设置为完成自适应控制。Exemplarily, the vehicle state judging module is configured to judge whether the vehicle enters a steady-state driving state; the demand pressure value setting module is configured to set the value of the clutch demand pressure to control the actual pressure of the main oil circuit in response to the vehicle entering a steady-state driving state value; the adaptive growth control condition judging module is set to judge whether the adaptive growth control condition is satisfied; the fast adjustment module is set to respond to the adaptive growth control condition, according to the first adaptive pressure safety factor and the fast compensation pressure safety factor to the clutch The value of the demand pressure is quickly adjusted; the clutch state judging module is set to judge whether the clutch returns to a normal state; the dynamic growth adjustment module is set to respond to the clutch returning to a normal state, cancel the fast compensation pressure safety factor, and adjust the first adaptive pressure The safety factor is dynamically increased and adjusted; the adaptive control module is set to complete the adaptive control.
该装置将离合器需求压力的值设置为主油路实际压力控制值,从而满足离合器工况,激活自适应增长控制条件后能够根据第一自适应压力安全系数和快 速补偿压力安全系数对离合器需求压力的值进行快速调整,以保证有足够压力为离合器提供压力源,当离合器恢复到正常状态后,对第一自适应压力安全系数进行动态增长调整,实现自动学习,能够在下次运行时保证稳定的离合器传扭要求,保证***功能正常工作。The device sets the value of the clutch demand pressure as the actual pressure control value of the main oil circuit, so as to meet the clutch working conditions. After the adaptive growth control condition is activated, the clutch demand pressure can be adjusted according to the first adaptive pressure safety factor and the fast compensation pressure safety factor. Quickly adjust the value to ensure that there is enough pressure to provide a pressure source for the clutch. When the clutch returns to a normal state, the first self-adaptive pressure safety factor is adjusted dynamically to realize automatic learning and to ensure a stable pressure in the next operation. The torque transmission requirements of the clutch ensure the normal operation of the system function.
实施例四:Embodiment four:
参见附图4,本实施例提供一种设备,该设备包括存储器11、处理器21及存储在存储器11上并可在处理器21上运行的计算机程序,处理器21执行所述程序时实现上述主油压自适应控制方法。Referring to accompanying drawing 4, present embodiment provides a kind of equipment, and this equipment comprises memory 11, processor 21 and the computer program that is stored on memory 11 and can run on processor 21, realizes above-mentioned when processor 21 executes described program. Main oil pressure adaptive control method.
在一个可选实施例中提供了一种设备,设备包括:处理器21和存储器11。其中,处理器21和存储器11相连,如通过总线相连。可选地,设备还可以包括收发器。需要说明的是,实际应用中收发器不限于一个,该设备的结构并不构成对本申请实施例的限定。A device is provided in an optional embodiment, and the device includes: a processor 21 and a memory 11 . Wherein, the processor 21 is connected to the memory 11, such as through a bus. Optionally, the device may also include a transceiver. It should be noted that in practical applications, the transceiver is not limited to one, and the structure of the device does not limit the embodiment of the present application.
处理器可以是中央处理器(Central Processing Unit,CPU),通用处理器,数字信号处理器(Digital Signal Processor,DSP),专用集成电路(Application Specific Integrated Circuit,ASIC),现场可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。处理器可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑框图,模块和电路。处理器也可以是实现计算功能的组合,例如包含至少一个微处理器组合,DSP和微处理器的组合等。The processor can be a central processing unit (Central Processing Unit, CPU), a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The processor may implement or execute the various exemplary logical blocks, modules and circuits described in connection with the present disclosure. The processor can also be a combination of computing functions, for example, a combination of at least one microprocessor, a combination of a DSP and a microprocessor, and the like.
总线可包括一通路,在上述组件之间传送信息。总线可以是外设部件互连标准(Peripheral Component Interconnect,PCI)总线或扩展工业标准结构(Extended Industry Standard Architecture,EISA)总线等。总线可以分为地址总线、数据总线、控制总线等。A bus may include a path for transferring information between the above-mentioned components. The bus may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA) bus or the like. The bus can be divided into address bus, data bus, control bus and so on.
存储器可以是只读存储器(Read Only Memory,ROM)或可存储静态信息和指令的其他类型的静态存储设备,随机存取存储器(Random Access Memory,RAM)或者可存储信息和指令的其他类型的动态存储设备,也可以是电可擦可 编程只读存储器(Electrically Erasable Programmable Read Only Memory,EEPROM)、只读光盘(Compact Disc Read Only Memory,CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质,但不限于此。Memory can be read-only memory (Read Only Memory, ROM) or other types of static storage devices that can store static information and instructions, random access memory (Random Access Memory, RAM) or other types of dynamic memory devices that can store information and instructions The storage device can also be Electrically Erasable Programmable Read Only Memory (EEPROM), Compact Disc Read Only Memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc , Laser Disc, Optical Disc, Digital Versatile Disc, Blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any Other media, but not limited to.
存储器设置为存储执行本申请方案的应用程序代码,并由处理器来控制执行。处理器设置为执行存储器中存储的计算机程序,以实现前述方法实施例所示的内容。The memory is configured to store the application program code for executing the solution of the present application, and the execution is controlled by the processor. The processor is configured to execute the computer program stored in the memory, so as to realize the contents shown in the foregoing method embodiments.
该设备将离合器需求压力的值设置为主油路实际压力控制值从而满足离合器工况,激活自适应增长控制条件后能够根据第一自适应压力安全系数和快速补偿压力安全系数对离合器需求压力的值进行快速调整,以保证有足够压力为离合器提供压力源,当离合器恢复到正常状态后,对第一自适应压力安全系数进行动态增长调整,实现自动学习,能够在下次运行时保证稳定的离合器传扭要求,保证***功能正常工作。The device sets the value of the clutch demand pressure as the actual pressure control value of the main oil circuit to meet the clutch working conditions. After the adaptive growth control condition is activated, the clutch demand pressure can be adjusted according to the first adaptive pressure safety factor and the fast compensation pressure safety factor. Quickly adjust the value to ensure that there is enough pressure to provide a pressure source for the clutch. When the clutch returns to a normal state, the first self-adaptive pressure safety factor is dynamically increased and adjusted to realize automatic learning, which can ensure a stable clutch in the next operation. Torque transmission requirements to ensure the normal operation of the system functions.
实施例五:Embodiment five:
本申请实施例提供一种存储介质,存储介质存储计算机指令,所述计算机程序使所述计算机执行上述的主油压自适应控制方法。An embodiment of the present application provides a storage medium, and the storage medium stores computer instructions, and the computer program causes the computer to execute the above-mentioned main oil pressure adaptive control method.
该存储介质将离合器需求压力的值设置为主油路实际压力控制值从而满足离合器工况,激活自适应增长控制条件后能够根据第一自适应压力安全系数和快速补偿压力安全系数对离合器需求压力的值进行快速调整,以保证有足够压力为离合器提供压力源,当离合器恢复到正常状态后,对第一自适应压力安全系数进行动态增长调整,实现自动学习,能够在下次运行时保证稳定的离合器传扭要求,保证***功能正常工作。The storage medium sets the value of the clutch demand pressure as the actual pressure control value of the main oil circuit to meet the clutch working conditions. After the adaptive growth control condition is activated, the clutch demand pressure can be adjusted according to the first adaptive pressure safety factor and the fast compensation pressure safety factor. Quickly adjust the value to ensure that there is enough pressure to provide a pressure source for the clutch. When the clutch returns to a normal state, the first self-adaptive pressure safety factor is adjusted dynamically to realize automatic learning and to ensure a stable pressure in the next operation. The torque transmission requirements of the clutch ensure the normal operation of the system function.
Claims (13)
- 一种主油压自适应控制方法,包括:A main oil pressure adaptive control method, comprising:判断车辆是否进入稳态行驶状态;Determine whether the vehicle has entered a steady-state driving state;响应于车辆进入稳态行驶状态,将离合器需求压力的值设置为主油路实际压力控制值;In response to the vehicle entering a steady-state driving state, setting the value of the clutch demand pressure as the actual pressure control value of the main oil circuit;判断是否满足自适应增长控制条件;Judging whether the adaptive growth control condition is satisfied;响应于满足自适应增长控制条件,根据第一自适应压力安全系数和快速补偿压力安全系数对所述离合器需求压力的值进行快速调整;In response to satisfying the adaptive growth control condition, quickly adjusting the value of the clutch demand pressure according to the first adaptive pressure safety factor and the fast compensation pressure safety factor;判断离合器是否恢复到正常状态;Judging whether the clutch returns to normal state;响应于离合器恢复到正常状态,取消所述快速补偿压力安全系数,并对所述第一自适应压力安全系数进行动态增长调整;In response to the clutch returning to a normal state, canceling the rapid compensation pressure safety factor, and performing a dynamic growth adjustment on the first adaptive pressure safety factor;完成自适应控制。Complete adaptive control.
- 根据权利要求1所述的主油压自适应控制方法,其中,所述判断是否满足自适应增长控制条件,包括:The main oil pressure adaptive control method according to claim 1, wherein said judging whether the adaptive growth control condition is satisfied comprises:判断所述离合器需求压力与离合器实际压力的偏差是否大于第一压力偏差门限值;judging whether the deviation between the clutch demand pressure and the clutch actual pressure is greater than a first pressure deviation threshold;判断所述离合器需求压力的变化率是否小于第一预设变化率;judging whether the rate of change of the clutch demand pressure is less than a first preset rate of change;判断持续时间是否到达第一预设时长;judging whether the duration reaches the first preset duration;响应于满足所述离合器需求压力与离合器实际压力的偏差大于第一压力偏差门限值且所述离合器需求压力的变化率小于第一预设变化率这两个条件且满足这两个条件的持续时间到达第一预设时长,确定满足自适应增长控制条件。In response to satisfying the two conditions that the deviation between the clutch demand pressure and the clutch actual pressure is greater than the first pressure deviation threshold value and the change rate of the clutch demand pressure is less than the first preset change rate and satisfying the two conditions continuously When the time reaches the first preset duration, it is determined that the adaptive growth control condition is satisfied.
- 根据权利要求1所述的主油压自适应控制方法,还包括,响应于不满足自适应增长控制条件,将所述第一自适应压力安全系数设置为所述离合器需求压力的值,同时将所述第一自适应压力安全系数作为所述主油路实际压力控制值。The main oil pressure adaptive control method according to claim 1, further comprising: setting the first adaptive pressure safety factor as the value of the clutch demand pressure in response to not satisfying the adaptive increase control condition, and setting The first adaptive pressure safety factor is used as the actual pressure control value of the main oil circuit.
- 根据权利要求2所述的主油压自适应控制方法,其中,所述快速补偿压力安全系数由所述偏差、比例积分PI控制器的比例调节系数和积分调节系数以 及积分时间限定。The main oil pressure adaptive control method according to claim 2, wherein the fast compensation pressure safety factor is defined by the deviation, the proportional adjustment coefficient and the integral adjustment coefficient of the proportional-integral PI controller, and the integral time.
- 根据权利要求4所述的主油压自适应控制方法,其中,所述快速补偿压力安全系数通过以下公式计算获得:The main oil pressure adaptive control method according to claim 4, wherein the fast compensation pressure safety factor is calculated by the following formula:其中,P FastPID(n)代表快速补偿压力安全系数,e(t)表示所述偏差,K p代表PI控制器的比例调节系数,K i代表PI控制器的积分调节系数,t代表积分时间。 Among them, P FastPID (n) represents the fast compensation pressure safety factor, e(t) represents the deviation, K p represents the proportional adjustment coefficient of the PI controller, K i represents the integral adjustment coefficient of the PI controller, and t represents the integral time.
- 根据权利要求5所述的主油压自适应控制方法,其中,所述对所述第一自适应压力安全系数进行动态增长调整,包括:The main oil pressure adaptive control method according to claim 5, wherein said dynamically increasing and adjusting the first adaptive pressure safety factor comprises:将所述第一自适应压力安全系数与自适应增长步长相加确定第二自适应压力安全系数;adding the first adaptive pressure safety factor to the adaptive growth step size to determine a second adaptive pressure safety factor;将所述第二自适应压力安全系数替代当前的所述第一自适应压力安全系数。The second adaptive pressure safety factor is replaced by the current first adaptive pressure safety factor.
- 根据权利要求6所述的主油压自适应控制方法,其中,所述对所述第一自适应压力安全系数进行动态增长调整还包括:The main oil pressure adaptive control method according to claim 6, wherein said dynamically increasing and adjusting the first adaptive pressure safety factor further comprises:获取检测时长内的压力偏差超限平均值;Obtain the over-limit average value of the pressure deviation within the detection period;根据所述压力偏差超限平均值确定所述自适应增长步长。The adaptive growth step is determined according to the pressure deviation exceeding the average value.
- 根据权利要求1-7任一项所述的主油压自适应控制方法,所述将离合器需求压力的值设置为主油路实际压力控制值之后,还包括:According to the main oil pressure adaptive control method according to any one of claims 1-7, after the value of the clutch demand pressure is set to the actual pressure control value of the main oil circuit, it further includes:判断是否满足自适应降低控制条件;Judging whether the adaptive lowering control condition is satisfied;响应于满足自适应降低控制条件,对所述第一自适应压力安全系数进行动态降低调整;dynamically reducing the first adaptive pressure safety factor in response to satisfying an adaptive reducing control condition;完成自适应控制。Complete adaptive control.
- 根据权利要求8所述的主油压自适应控制方法,其中,所述判断是否满足自适应降低控制条件,包括:The main oil pressure adaptive control method according to claim 8, wherein said judging whether the adaptive reduction control condition is satisfied comprises:获取驾驶循环次数;Get the number of driving cycles;判断所述驾驶循环次数是否达到第一预设次数;judging whether the number of driving cycles reaches a first preset number of times;判断自动变速箱是否在固定挡位工作,车辆是否处于在挡稳定形势、目标挡位离合器是否处于同步无滑差状态;Judging whether the automatic transmission is working in a fixed gear, whether the vehicle is in a stable situation in gear, and whether the target gear clutch is in a synchronous and non-slip state;判断所述离合器需求压力的变化率是否小于第二预设变化率;judging whether the rate of change of the clutch demand pressure is less than a second preset rate of change;判断持续时间是否到达第二预设时长;judging whether the duration reaches the second preset duration;响应于所述驾驶循环次数达到第一预设次数且变速箱在固定挡位工作,车辆处于在档稳定形势、目标挡位离合器处于同步无滑差状态且离合器需求压力的变化率小于第二预设变化率且持续时间到达第二预设时长,判断为满足自适应降低控制条件。In response to the number of driving cycles reaching a first preset number and the gearbox is working in a fixed gear, the vehicle is in a stable situation in gear, the clutch of the target gear is in a synchronous no-slip state, and the rate of change of clutch demand pressure is less than a second preset If the rate of change is set and the duration reaches the second preset duration, it is determined that the adaptive reduction control condition is met.
- 根据权利要求8所述的主油压自适应控制方法,其中,所述对所述第一自适应压力安全系数进行动态降低调整,包括:The main oil pressure adaptive control method according to claim 8, wherein said dynamically reducing and adjusting the first adaptive pressure safety factor comprises:以固定降低步长逐渐降低主油路压力并记录降低步长次数;Gradually reduce the pressure of the main oil circuit with a fixed reduction step and record the number of reduction steps;根据所述固定降低步长和所述降低步长次数获得自适应降低步长;Obtaining an adaptive reduction step size according to the fixed reduction step size and the number of reduction step sizes;将所述第一自适应压力安全系数与所述自适应降低步长相减;subtracting the first adaptive pressure safety factor from the adaptive reduction step size;判断所述离合器实际压力与所述离合器需求压力的偏差是否超过第二压力偏差门限值;judging whether the deviation between the clutch actual pressure and the clutch demand pressure exceeds a second pressure deviation threshold;响应于所述离合器实际压力与所述离合器需求压力的偏差超过第二压力偏差门限值,将第一自适应压力安全系数与所述自适应降低步长的相减结果确定为第三自适应压力安全系数;In response to the deviation between the clutch actual pressure and the clutch demand pressure exceeding a second pressure deviation threshold value, the subtraction result of the first adaptive pressure safety factor and the adaptive reduction step size is determined as a third adaptive pressure safety factor;由所述第三自适应压力安全系数替代当前的所述第一自适应压力安全系数。The current first adaptive pressure safety factor is replaced by the third adaptive pressure safety factor.
- 一种主油压自适应控制装置,包括:A main oil pressure adaptive control device, comprising:车辆状态判断模块(10),设置为判断车辆是否进入稳态行驶状态;The vehicle state judging module (10) is configured to judge whether the vehicle enters a steady-state driving state;需求压力值设定模块(20),设置为响应于车辆进入稳态行驶状态,将离合器需求压力的值设置为主油路实际压力控制值;A demand pressure value setting module (20), configured to set the value of the clutch demand pressure as the actual pressure control value of the main oil circuit in response to the vehicle entering a steady-state driving state;自适应增长控制条件判断模块(30),设置为判断是否满足自适应增长控制条件;An adaptive growth control condition judging module (30), configured to judge whether the adaptive growth control condition is satisfied;快速调整模块(40),设置为响应于满足自适应增长控制条件,根据第一自 适应压力安全系数和快速补偿压力安全系数对所述离合器需求压力的值进行快速调整;A quick adjustment module (40), configured to quickly adjust the value of the clutch demand pressure according to the first adaptive pressure safety factor and the quick compensation pressure safety factor in response to satisfying the adaptive growth control condition;离合器状态判断模块(50),设置为判断离合器是否恢复到正常状态;The clutch state judging module (50) is configured to judge whether the clutch returns to a normal state;动态增长调整模块(60),设置为响应于离合器恢复到正常状态,取消所述快速补偿压力安全系数,并对所述第一自适应压力安全系数进行动态增长调整;A dynamic increase adjustment module (60), configured to cancel the fast compensation pressure safety factor and perform dynamic increase adjustment on the first adaptive pressure safety factor in response to the clutch returning to a normal state;自适应控制模块(70),设置为完成自适应控制。An adaptive control module (70), configured to perform adaptive control.
- 一种设备,包括存储器(11)、处理器(21)及存储在存储器(11)上并可在处理器(21)上运行的计算机程序,所述处理器(21)执行所述计算机程序时实现如权利要求1至10任一项所述的主油压自适应控制方法。A device comprising a memory (11), a processor (21) and a computer program stored on the memory (11) and operable on the processor (21), when the processor (21) executes the computer program The main oil pressure adaptive control method according to any one of claims 1 to 10 is realized.
- 一种存储介质,所述存储介质存储计算机程序,所述计算机程序使所述计算机执行如权利要求1至10任一项所述的主油压自适应控制方法。A storage medium storing a computer program, the computer program causing the computer to execute the main oil pressure adaptive control method according to any one of claims 1 to 10.
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CN202111281708.5A CN114110043B (en) | 2021-11-01 | 2021-11-01 | Main oil pressure self-adaptive control method, device, equipment and storage medium |
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---|---|---|---|---|
US20230053741A1 (en) * | 2021-08-18 | 2023-02-23 | Hyundai Motor Company | Hydraulic pressure control method for a vehicle transmission |
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CN114110043B (en) * | 2021-11-01 | 2024-06-14 | 中国第一汽车股份有限公司 | Main oil pressure self-adaptive control method, device, equipment and storage medium |
CN114811028B (en) * | 2022-03-17 | 2024-05-17 | 潍柴动力股份有限公司 | Vehicle gear shift control method, device, electronic equipment and storage medium |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010059154A (en) * | 1999-12-30 | 2001-07-06 | 이계안 | Method for line pressure controlling of automatic transmission of vehicle |
CN108518478A (en) * | 2018-04-08 | 2018-09-11 | 吉泰车辆技术(苏州)有限公司 | Double-clutch speed changer main oil pressure self-adaptation control method and system |
CN109253247A (en) * | 2018-11-02 | 2019-01-22 | 盛瑞传动股份有限公司 | Working connection pressure adaptive control method, system and electronic equipment |
CN109441975A (en) * | 2018-12-29 | 2019-03-08 | 盛瑞传动股份有限公司 | Oil pressure adaptive approach and device based on PI control |
CN111365452A (en) * | 2020-03-26 | 2020-07-03 | 泸州容大智能变速器有限公司 | Self-adaptive learning control method in clutch combination process |
CN114110043A (en) * | 2021-11-01 | 2022-03-01 | 中国第一汽车股份有限公司 | Main oil pressure self-adaptive control method, device, equipment and storage medium |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102062206A (en) * | 2010-11-12 | 2011-05-18 | 奇瑞汽车股份有限公司 | Self-adaptive control method and control system of wet clutch for continuously variable transmission |
CN105782286B (en) * | 2016-04-11 | 2017-11-28 | 安徽江淮汽车集团股份有限公司 | A kind of oil-filled self-adaptation control method and system for wet clutch |
DE102016215220A1 (en) * | 2016-08-16 | 2018-02-22 | Zf Friedrichshafen Ag | Method for operating a dual-clutch transmission with a two-clutch dual-clutch system |
CN109163087B (en) * | 2018-09-07 | 2020-08-14 | 一汽解放汽车有限公司 | Self-adaptive control method for torque of automatic transmission clutch |
CN111692238B (en) * | 2019-03-11 | 2021-09-07 | 上海汽车变速器有限公司 | Self-adaptive optimization control method for torque transmission characteristics of clutch |
CN112443657B (en) * | 2021-02-01 | 2021-04-20 | 北京航空航天大学 | Main oil circuit pressure control method for preventing clutch from slipping in quick oil filling stage |
-
2021
- 2021-11-01 CN CN202111281708.5A patent/CN114110043B/en active Active
-
2022
- 2022-11-01 WO PCT/CN2022/128846 patent/WO2023072293A1/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010059154A (en) * | 1999-12-30 | 2001-07-06 | 이계안 | Method for line pressure controlling of automatic transmission of vehicle |
CN108518478A (en) * | 2018-04-08 | 2018-09-11 | 吉泰车辆技术(苏州)有限公司 | Double-clutch speed changer main oil pressure self-adaptation control method and system |
CN109253247A (en) * | 2018-11-02 | 2019-01-22 | 盛瑞传动股份有限公司 | Working connection pressure adaptive control method, system and electronic equipment |
CN109441975A (en) * | 2018-12-29 | 2019-03-08 | 盛瑞传动股份有限公司 | Oil pressure adaptive approach and device based on PI control |
CN111365452A (en) * | 2020-03-26 | 2020-07-03 | 泸州容大智能变速器有限公司 | Self-adaptive learning control method in clutch combination process |
CN114110043A (en) * | 2021-11-01 | 2022-03-01 | 中国第一汽车股份有限公司 | Main oil pressure self-adaptive control method, device, equipment and storage medium |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230053741A1 (en) * | 2021-08-18 | 2023-02-23 | Hyundai Motor Company | Hydraulic pressure control method for a vehicle transmission |
US12007018B2 (en) * | 2021-08-18 | 2024-06-11 | Hyundai Motor Company | Hydraulic pressure control method for a vehicle transmission |
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CN114110043A (en) | 2022-03-01 |
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