CN114622965B - Control method based on continuous variable valve lift mechanism and electronic equipment - Google Patents

Control method based on continuous variable valve lift mechanism and electronic equipment Download PDF

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Publication number
CN114622965B
CN114622965B CN202110257529.1A CN202110257529A CN114622965B CN 114622965 B CN114622965 B CN 114622965B CN 202110257529 A CN202110257529 A CN 202110257529A CN 114622965 B CN114622965 B CN 114622965B
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valve lift
variable valve
lift mechanism
preset condition
continuously variable
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CN114622965A (en
Inventor
王岩
朱海发
姚岩岩
马京卫
刘鲁平
房艳龙
张松
王继鹏
董亚林
李栋梁
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L2013/11—Sensors for variable valve timing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L2013/11—Sensors for variable valve timing
    • F01L2013/118—Valve lift
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The application discloses a control method and device based on a continuous variable valve lift mechanism, electronic equipment and a readable storage medium, and belongs to the technical field of control. And under the condition that the continuous variable valve lift mechanism is determined to be in the working state, controlling the continuous variable valve lift mechanism to enter a first self-learning mode, wherein the first self-learning mode is used for driving the continuous variable valve lift mechanism to move from a position corresponding to the first valve lift to a position corresponding to the second valve lift, under the condition that the first self-learning mode meets a first preset condition, generating a first target preset condition, and under the condition that the continuous variable valve lift mechanism meets the first target preset condition, controlling the continuous variable valve lift mechanism to execute lift switching. The self-learning mode is used for detecting the switching condition between two valve lifts of the continuous variable valve lift mechanism, and the target preset condition for lift switching is flexibly adjusted, so that the control accuracy of the continuous variable valve lift mechanism is improved.

Description

Control method based on continuous variable valve lift mechanism and electronic equipment
Technical Field
The application belongs to the technical field of control, and particularly relates to a control method based on a continuous variable valve lift mechanism and electronic equipment.
Background
With the continuous enhancement of environmental awareness of the public, the exhaust emission of automobiles is also increasingly emphasized. The exhaust emissions of vehicles are typically monitored by an on-board automatic control system. In the related art, the execution condition of the actuator and the feedback signal of the related sensor are obtained, and when the execution condition or the feedback signal does not accord with the detection condition, the execution condition of the current vehicle-mounted automatic control system is determined to be poor.
However, in the process of implementing the present application, the inventor finds that at least the following problems exist in the related art, and the actuator or the sensor cannot adjust the detection condition according to the actual use condition, so that the control accuracy is low.
Content of the application
An object of the embodiment of the application is to provide a control method, a device, an electronic device and a readable storage medium based on a continuously variable valve lift mechanism, which can solve the problem of lower control accuracy.
In order to solve the technical problems, the application is realized as follows:
in a first aspect, an embodiment of the present application provides a control method based on a continuously variable valve lift mechanism, applied to a controller of a vehicle, the method including:
Controlling the continuously variable valve lift mechanism to enter a first self-learning mode under the condition that the continuously variable valve lift mechanism is determined to be in a working state, wherein the first self-learning mode is used for driving the continuously variable valve lift mechanism to move from a position corresponding to a first valve lift to a position corresponding to a second valve lift;
generating a first target preset condition under the condition that the first self-learning mode meets a first preset condition, wherein the first target preset condition is determined by first information corresponding to the first self-learning mode and the first preset condition, the first information at least comprises control information when the continuously variable valve lift mechanism executes the first valve lift and control information when the second valve lift is executed, and the first preset condition is determined according to the working characteristic of the continuously variable valve lift mechanism;
and controlling the continuously variable valve lift mechanism to execute lift switching under the condition that the continuously variable valve lift mechanism meets a first target preset condition.
In a second aspect, embodiments of the present application provide a control device based on a continuously variable valve lift mechanism, applied to a controller of a vehicle, the device including:
The first control module is used for controlling the continuously variable valve lift mechanism to enter a first self-learning mode under the condition that the continuously variable valve lift mechanism is determined to be in a working state, wherein the first self-learning mode is used for driving the continuously variable valve lift mechanism to move from a position corresponding to a first valve lift to a position corresponding to a second valve lift;
a first determining module, configured to record first information corresponding to the first self-learning mode and determine a first target preset condition according to the first information and the first preset condition, where the first information includes at least control information when the continuously variable valve lift mechanism executes the first valve lift and control information when the second valve lift is executed, and the first preset condition is determined according to an operating characteristic of the continuously variable valve lift mechanism;
and the first switching module is used for controlling the continuously variable valve lift mechanism to execute lift switching under the condition that the continuously variable valve lift mechanism meets a first target preset condition.
In a third aspect, an embodiment of the present application provides an electronic device, including a processor, a memory, and a program or instructions stored on the memory and executable on the processor, where the program or instructions, when executed by the processor, implement the steps of the control method based on a continuously variable valve lift mechanism according to the first aspect.
In a fourth aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions that, when executed by a processor, implement the steps of the continuously variable valve lift mechanism-based control method according to the first aspect.
In a fifth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement a control method based on a continuously variable valve lift mechanism according to the first aspect.
In the embodiment of the application, under the condition that the continuously variable valve lift mechanism is determined to be in a working state, the continuously variable valve lift mechanism is controlled to enter a first self-learning mode, the first self-learning mode is used for driving the continuously variable valve lift mechanism to move from a position corresponding to a first valve lift to a position corresponding to a second valve lift, a first target preset condition is generated under the condition that the first self-learning mode meets the first preset condition, and under the condition that the continuously variable valve lift mechanism meets the first target preset condition, the continuously variable valve lift mechanism is controlled to execute lift switching. The self-learning mode is used for detecting the switching condition between two valve lifts of the continuous variable valve lift mechanism, and the target preset condition for lift switching is flexibly adjusted, so that the control accuracy of the continuous variable valve lift mechanism is improved.
Drawings
FIG. 1 is a schematic diagram of a control system based on a continuously variable valve lift mechanism provided in an embodiment of the present application;
FIG. 2 is a method flow diagram of a control method based on a continuously variable valve lift mechanism provided in an embodiment of the present application;
FIG. 3 is a flowchart of a method for generating a first target preset condition according to an embodiment of the present application;
FIG. 4 is a method flow diagram of yet another control method based on a continuously variable valve lift mechanism provided by an embodiment of the present application;
FIG. 5 is a flowchart of a method for generating a second target preset condition according to an embodiment of the present application;
FIG. 6 is a method flow diagram of another control method based on a continuously variable valve lift mechanism provided in an embodiment of the present application;
FIG. 7 is a method flow diagram of yet another control method based on a continuously variable valve lift mechanism provided in an embodiment of the present application;
FIG. 8 is a block diagram of a control device based on a continuously variable valve lift mechanism according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 10 is a schematic hardware structure of an electronic device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
In the related art, the execution condition of the actuator and the feedback signal of the related sensor are obtained, and when the execution condition or the feedback signal does not accord with the detection condition, the execution condition of the current vehicle-mounted automatic control system is determined to be poor. However, the actuator or sensor in the related art cannot adjust the detection condition according to the actual use condition, and the accuracy of control is low. The self-learning mode optimizes the situation, and improves the control accuracy.
The control method, the device, the electronic equipment and the readable storage medium based on the continuous variable valve lift mechanism provided by the embodiment of the application are described in detail below through specific embodiments and application scenes thereof with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 shows a schematic diagram of a control system 100 based on a continuously variable valve lift mechanism, and as shown in fig. 1, the control system 100 includes a camshaft phaser 101, a camshaft 102, an eccentric shaft 103, an actuator 104, an accelerator pedal 105, a controller (Electronic Control Unit, ECU) 106, an eccentric shaft position sensor 107.
The camshaft 102 enters a working state, the camshaft phaser 101 acquires a camshaft phase, the actuator 104 determines to execute a valve lift according to the controller 106, and feeds back information of executing the valve lift once, the eccentric shaft position sensor 107 acquires a feedback voltage of the eccentric shaft 103, so as to judge the rotation angle of the eccentric shaft 103, the accelerator pedal 105 is used for providing energy for the operation of the control system 100, and the controller 106 sends various instructions for lift switching according to the acquired information, wherein the instructions can be a condition for diagnosing the lift switching, or a condition for determining the lift switching.
Referring to fig. 2, a flowchart of a control method based on a continuously variable valve lift mechanism according to an embodiment of the present application is shown, and the method is applied to a controller of a vehicle, where the variable valve lift mechanism is used to adjust a valve lift of an engine, and includes:
and S201, under the condition that the continuous variable valve lift mechanism is determined to be in a working state, controlling the continuous variable valve lift mechanism to enter a first self-learning mode, wherein the first self-learning mode is used for driving the continuous variable valve lift mechanism to move from a position corresponding to the first valve lift to a position corresponding to the second valve lift.
In the embodiment of the application, under the condition that the engine of the vehicle is electrified, the controller carries out real-time diagnosis on the electric faults and communication faults of the eccentric shaft position sensor, the actuator and the eccentric shaft position sensor, so as to ensure that each component can work normally when the valve lift switching is executed. When the diagnosis detects an error, the controller can directly send out an electric fault alarm or a communication fault alarm; when no error is diagnosed, the controller will command the continuously variable valve lift mechanism to execute the corresponding mode.
Therefore, when the controller determines that the continuously variable valve lift mechanism is in the working state, the controller controls the continuously variable valve lift mechanism to enter a first self-learning mode, and in the first self-learning mode, the controller can drive the continuously variable valve lift mechanism to move from a position corresponding to the first valve lift to a position corresponding to the second valve lift.
In general, the valve lift of the continuously variable valve lift mechanism includes at least a first valve lift and a second valve lift, and when the first self-learning mode is executed, the valve lift is switched from the first valve lift to the second valve lift. The first valve lift and the second valve lift are both limit lifts of the valve lift, one is the minimum valve lift, and the other is the maximum valve lift. If the valve lift includes a first valve lift, a second valve lift, and a third valve lift, the first valve lift and the second valve lift also represent the limit lifts of the valve lifts, one is the minimum valve lift and the other is the maximum valve lift.
Alternatively, the first valve lift is the minimum valve lift, and the second valve lift is the maximum valve lift, but in practical application, the first valve lift may be the maximum valve lift, and the second valve lift may be the minimum valve lift. That is, the first self-learning mode characterizes a mode in which the continuously variable valve lift mechanism performs limit lift switching, i.e., switching to a maximum (minimum) valve lift with a minimum (maximum) valve lift.
It should be noted that, there are two states of the continuously variable valve lift mechanism, namely, an operating state and an idle state, and in general, during operation of the vehicle, the continuously variable valve lift mechanism is in the operating state so as to meet the running requirement of the vehicle.
S202, generating a first target preset condition under the condition that the first self-learning mode meets the first preset condition.
The first target preset condition is determined by first information corresponding to a first self-learning mode and the first preset condition, the first information at least comprises control information when the continuous variable valve lift mechanism executes a first valve lift and control information when the continuous variable valve lift mechanism executes a second valve lift, and the first preset condition is determined according to the working characteristic of the continuous variable valve lift mechanism.
In this embodiment of the present application, the first self-learning mode executed by the continuously variable valve lift mechanism is a lift switching, and therefore, it is required to satisfy a detection condition of lift switching, which is a first preset condition. The first preset condition is determined according to the working characteristics of the continuous variable valve lift mechanism, and different continuous variable valve lift mechanisms correspond to different first preset conditions. When the controller meets a first preset condition in the first self-learning mode, the controller can record first information corresponding to the first self-learning mode, and meanwhile, determine a first target preset condition according to the first information and the first preset condition.
The first self-learning mode satisfying a first preset condition characterizes completion of the first self-learning mode of execution of the continuously variable valve lift mechanism. At this time, the controller records first information corresponding to the first self-learning mode, where the first information includes at least control information when the continuously variable valve lift mechanism executes the first valve lift and control information when the second valve lift is executed, and the control information generally includes a rotation angle of the continuously variable valve lift mechanism and a feedback voltage under one valve lift.
Optionally, the controller may acquire first information of the continuously variable valve lift mechanism executing the first self-learning mode, and acquire a deviation interval corresponding to the first information when the first information meets a first preset condition, where the first preset condition includes at least that the rotation angle is in a preset rotation angle interval, that the feedback voltage of the first valve lift is in a preset first feedback voltage interval, and that the feedback voltage of the second valve lift is in a preset second feedback voltage interval. The controller determines a first target preset condition according to the deviation interval and a first preset condition, wherein the first target preset condition comprises the first preset condition and a condition meeting the deviation interval corresponding to the first information. The first information at least comprises a rotation angle of the continuously variable valve lift mechanism in the first self-learning mode and feedback voltages of the continuously variable valve lift mechanism at the first valve lift and the second valve lift respectively.
And S203, controlling the continuously variable valve lift mechanism to execute lift switching when the continuously variable valve lift mechanism meets a first target preset condition.
In the embodiment of the present application, the controller obtains the first target preset condition after executing S201-S202, and in the case that the continuously variable valve lift mechanism meets the first target preset condition, the controller controls the continuously variable valve lift mechanism to execute lift switching. The lift switch at this time is a lift switch determined according to actual demand, i.e., before S203, the controller needs to determine a target valve lift according to actual demand of the vehicle. When the rotation speed is high and the torque is high, a larger air inflow is needed, a higher valve lift can be used, when the rotation speed is low and the load is low, the air inflow demand is reduced, and the demand can be met by using a smaller lift. The first self-learning mode of the present application may be a mode that is performed in advance when the vehicle performs lift switching according to actual demands, or may be a mode that the vehicle operates autonomously at regular intervals.
In summary, in the control method based on the continuously variable valve lift mechanism provided in the embodiment of the present application, when it is determined that the continuously variable valve lift mechanism is in the working state, the continuously variable valve lift mechanism is controlled to enter a first self-learning mode, where the first self-learning mode is used to drive the continuously variable valve lift mechanism to move from a position corresponding to the first valve lift to a position corresponding to the second valve lift, when the first self-learning mode meets a first preset condition, a first target preset condition is generated, and when the continuously variable valve lift mechanism meets the first target preset condition, the continuously variable valve lift mechanism is controlled to execute lift switching. According to the method and the device, the switching condition between two valve lifts of the continuous variable valve lift mechanism is detected through the self-learning mode, and then the target preset condition for lift switching is flexibly adjusted according to the self-learning mode, so that the control accuracy of the continuous variable valve lift mechanism is improved.
It should be noted that, each component of the continuously variable valve lift mechanism needs to meet its calibrated current, avoiding the occurrence of a failureIn practical application, after the controller obtains voltage support, the controller can diagnose the current of the actuator, and when the current of the actuator does not exceed the calibrated upper limit value, the actuator can be considered to normally operate. The controller receives the information transmitted by all the components and can also send the information to each component so as to control the operation of the components. The actuator can receive the position signal transmitted by the controller to drive the eccentric shaft according to a certain reduction ratio or transmission ratio, if the current at the moment is integrated with the integral ≡I 2 dt exceeds a threshold, i.e., indicating that the actuator is overheated at this time, there is a risk of burnout, at which time the controller may issue a fault alert, entering a limp-home mode.
Furthermore, when the continuously variable valve lift mechanism is powered down, the continuously variable valve lift mechanism can also perform a self-learning mode, the self-learning mode at the moment is consistent with the first self-learning mode, and if an abnormality occurs at the moment, the controller sends out a fault alarm when the continuously variable valve lift mechanism is powered up next time.
Referring to fig. 3, a flowchart of a method for generating a first target preset condition according to an embodiment of the present application is shown, as shown in fig. 3, S202 includes S2021-S2023:
S2021, acquiring first information of the continuous variable valve lift mechanism executing a first self-learning mode, wherein the first information at least comprises a rotation angle of the continuous variable valve lift mechanism in the first self-learning mode and feedback voltages of the continuous variable valve lift mechanism in a first valve lift and a second valve lift respectively.
In the embodiment of the present application, the first self-learning mode is used to drive the continuously variable valve lift mechanism to move from the position corresponding to the first valve lift to the position corresponding to the second valve lift, so that there is necessarily a change in the rotation angle, the feedback voltage, or the like when the continuously variable valve generating mechanism executes the first self-learning mode. The controller may obtain first information of the continuously variable valve lift mechanism executing the first self-learning mode, that is, record a case where the continuously variable valve lift mechanism executes the first self-learning mode, so as to further detect the case subsequently. The first information at least comprises a rotation angle of the continuously variable valve lift mechanism in the first self-learning mode and feedback voltages of the continuously variable valve lift mechanism at the first valve lift and the second valve lift respectively.
S2022, when the first information meets the first preset condition, acquiring a deviation interval corresponding to the first information.
The first preset condition at least comprises that the rotation angle is in a preset rotation angle interval, the feedback voltage of the first valve lift is in a preset first feedback voltage interval, and the feedback voltage of the second valve lift is in a preset second feedback voltage interval.
After the first information is acquired, the controller detects the first information, and acquires a deviation interval corresponding to the first information when the first information meets a first preset condition. The deviation interval is a fluctuation range allowed between the first information and the next first information, that is, when a piece of information is acquired again later, as long as the difference between the piece of information and the first information falls at any point in the deviation interval. The first preset condition at least comprises that the rotation angle is in a preset rotation angle interval, the feedback voltage of the first valve lift is in a preset first feedback voltage interval, and the feedback voltage of the second valve lift is in a preset second feedback voltage interval. The preset rotation angle interval, the first feedback voltage interval and the second feedback voltage interval are respectively a rotation angle, feedback voltage of the first valve lift and a fluctuation range allowed by feedback voltage of the second valve lift, and when the obtained first information falls on the corresponding interval, the first information meets a first preset condition.
It should be noted that, the deviation interval may be set autonomously, or may be determined according to the factory identifier of the vehicle, or may be trained multiple times before, and the result is fitted to obtain the preset condition. The fitting method may be least square curve fitting, and when fitting with the least square curve, the fitting is performed for multiple times to determine the difference between the actual information and the first information of the lift switching, and the difference is close to the actual information and the first information on the whole to obtain a fluctuation range, that is, a deviation interval, and other fitting methods may also be adopted, which are not described herein.
S2023, determining a first target preset condition by the deviation interval and a first preset condition, wherein the first target preset condition comprises the first preset condition and a condition meeting the deviation interval corresponding to the first information.
In this embodiment of the present application, the controller determines a first target preset condition according to the obtained deviation interval and a first preset condition, that is, the first target preset condition includes two conditions, one is a preset condition, and the other is a condition that satisfies the deviation interval corresponding to the first information. The first information is not particularly limited to the first information described above, and may be any one of the first information obtained by performing lift switching subsequently.
Referring to fig. 4, a flowchart of a control method based on a continuously variable valve lift mechanism according to an embodiment of the present application is shown, and based on fig. 2, in addition to S201-S203, fig. 3 further includes S204-S206:
s204, controlling the continuously variable valve lift mechanism to enter a second self-learning mode, wherein the second self-learning mode is used for driving the continuously variable valve lift mechanism to move to a position corresponding to the first valve lift or to move to a position corresponding to the second valve lift.
In this embodiment, the second self-learning mode is performed after the first self-learning mode, and the controller has previously detected both limit lifts of the valve lift, and thus may be selectively re-detected here, and thus, when the second self-learning mode is used to drive the continuously variable valve lift mechanism to move to a position corresponding to the first valve lift, or to a position corresponding to the second valve lift.
It should be noted that, before S204, the controller may further determine a target valve lift, where the target valve lift may indicate a moving direction of the continuously variable valve lift, that is, moving in a direction of the first valve lift, or moving in a direction of the second valve lift, and determine, by determining the target valve lift, a direction in which the controller needs to move, so as to determine whether the second self-learning mode drives the continuously variable valve lift mechanism to move to a position corresponding to the first valve lift or to move to a position corresponding to the second valve lift.
S205, when the second self-learning mode meets the first target preset condition, generating a second target preset condition.
The second target preset condition is determined by second information corresponding to the second self-learning mode and the first target preset condition, and the second information at least comprises control information corresponding to the first valve lift executed by the continuous variable valve lift mechanism or control information corresponding to the second valve lift executed by the continuous variable valve lift mechanism.
In this embodiment of the present application, when the second self-learning mode satisfies the first target preset condition, the controller generates a second target preset condition, where the second target preset condition is determined by second information corresponding to the second self-learning mode and the first target preset condition.
It should be noted that the second self-learning mode at this time is a further self-learning mode immediately following the first self-learning mode, but in practical application, the second self-learning mode may also be a next self-learning mode, or even a further self-learning mode after a plurality of self-learning modes. That is, after the first self-learning mode, the next self-learning mode or even the next self-learning mode may follow the implementation of the second self-learning mode. Specifically, when the nth self-learning mode satisfies the nth-1 target preset condition, an nth target preset condition is generated, the nth target preset condition is determined by nth information corresponding to the nth self-learning mode and the nth-1 target preset condition, and the nth information at least comprises control information corresponding to the execution of the first valve lift by the continuous variable valve lift mechanism or control information corresponding to the execution of the second valve lift by the continuous variable valve lift mechanism.
Referring to fig. 5, a flowchart of a method for generating a second target preset condition according to an embodiment of the present application is shown, and as shown in fig. 5, S205 further includes S2051-S2053:
s2051, obtaining second information of the continuous variable valve lift mechanism executing a second self-learning mode, wherein the second information at least comprises a rotation angle of the continuous variable valve lift mechanism in the second self-learning mode and a feedback voltage of the continuous variable valve lift mechanism in the first valve lift or the second valve lift.
In the embodiment of the application, the controller may acquire second information that the continuously variable valve lift mechanism executes the second self-learning mode. When the second self-learning mode is used for driving the continuous variable valve lift mechanism to move to a position corresponding to the first valve lift, the second information at least comprises the rotation angle of the continuous variable valve lift mechanism in the second self-learning mode and the feedback voltage of the continuous variable valve lift mechanism in the first valve lift; when the second self-learning mode is used for driving the continuously variable valve lift mechanism to move to a position corresponding to the second valve lift, the second information at least comprises the rotation angle of the continuously variable valve lift mechanism in the second self-learning mode and the feedback voltage of the continuously variable valve lift mechanism in the second valve lift.
S2052, when the second information meets the first target preset condition, acquiring a deviation interval corresponding to the second information.
According to the above, the first target preset condition includes a first preset condition and a condition that the deviation interval corresponding to the first information is satisfied, so that the second information satisfies the first target preset condition, that is, the second information satisfies both the first preset condition and the condition that the deviation interval corresponding to the first information is satisfied. The condition that the second information meets the deviation interval corresponding to the first information means that the difference value between the second information and the first information is within the allowable range of the controller, so that the reliability and the stability of the continuously variable valve lift mechanism are realized.
When the second information meets the condition of the deviation interval corresponding to the first information, the difference value can be determined according to the actual requirement, if the second information at least comprises the rotation angle of the continuous variable valve lift mechanism in the second self-learning mode and the feedback voltage of the continuous variable valve lift mechanism in the first valve lift, namely, the difference value is determined with the first information at least comprises the rotation angle of the continuous variable valve lift mechanism in the first self-learning mode and the feedback voltage of the continuous variable valve lift mechanism in the first valve lift, and then the deviation interval is determined; if the second information at least comprises the rotation angle of the continuous variable valve lift mechanism in the second self-learning mode and the feedback voltage of the continuous variable valve lift mechanism in the second valve lift, namely, the difference value between the second information and the first information at least comprises the rotation angle of the continuous variable valve lift mechanism in the first self-learning mode and the feedback voltage of the continuous variable valve lift mechanism in the second valve lift is determined, and then the deviation interval is determined.
S2053, determining a second target preset condition according to the deviation interval and the first target preset condition, wherein the second target preset condition comprises a condition that the first target preset condition and the second information meet the corresponding deviation interval.
In the embodiment of the present application, the specific implementation process of executing S2053 may refer to the implementation process of S2023, and the application embodiment itself is not described herein.
S206, controlling the continuously variable valve lift mechanism to execute lift switching when the continuously variable valve lift mechanism meets a second target preset condition.
In the embodiment of the present application, the specific implementation process of executing S206 may refer to the implementation process of S203, and the embodiment of the application itself is not described herein.
Referring to fig. 6, which is a flowchart illustrating another control method based on a continuously variable valve lift mechanism according to an embodiment of the present application, based on fig. 2, in addition to S201-S203, fig. 3 further includes S207-S208:
and S207, when the first self-learning mode does not meet the first preset condition, a fault alarm is sent out, the continuously variable valve lift mechanism is controlled to enter a limp-home mode, and the continuously variable valve lift mechanism is switched to a position corresponding to the maximum valve lift in the limp-home mode.
And S208, when the lift switching is not executed, a fault alarm is sent out, and the continuously variable valve lift mechanism is controlled to enter a limp-home mode.
In this embodiment of the application, in order to learn the condition of continuous variable valve lift mechanism in time, under the condition that first self-learning mode does not satisfy first preset condition, the controller sends out fault alarm, simultaneously, in order to ensure that the vehicle normal use, the controller will control continuous variable valve lift mechanism and get into the limp-home mode, and continuous variable valve lift mechanism switches to the position that the maximum valve lift corresponds under the limp-home mode, ensures that the vehicle can normally travel, avoids unnecessary running accident. Under the condition that the lift switching is not executed, the controller also gives out a fault alarm, and the continuously variable valve lift mechanism is still controlled to enter a limp-home mode, so that the normal use of the vehicle is ensured. For example, please refer to fig. 7, which is a flowchart illustrating a method of another control method based on a continuously variable valve lift mechanism according to an embodiment of the present application, where the self-learning mode mentioned in fig. 7 may be a first self-learning mode or a second self-learning mode, and the embodiment of the present application is not limited thereto specifically.
In summary, in the control method based on the continuously variable valve lift mechanism provided in the embodiment of the present application, when it is determined that the continuously variable valve lift mechanism is in the working state, the continuously variable valve lift mechanism is controlled to enter a first self-learning mode, where the first self-learning mode is used to drive the continuously variable valve lift mechanism to move from a position corresponding to the first valve lift to a position corresponding to the second valve lift, when the first self-learning mode meets a first preset condition, a first target preset condition is generated, and when the continuously variable valve lift mechanism meets the first target preset condition, the continuously variable valve lift mechanism is controlled to execute lift switching. According to the method and the device, the switching condition between two valve lifts of the continuous variable valve lift mechanism is detected through the self-learning mode, and then the target preset condition for lift switching is flexibly adjusted according to the self-learning mode, so that the control accuracy of the continuous variable valve lift mechanism is improved. Meanwhile, the second self-learning mode realizes further control of the continuously variable valve lift mechanism, and ensures the reliability and durability of the mechanism.
It should be noted that, in the control method based on the variable valve lift mechanism provided in the embodiments of the present application, the execution body may be a control device based on the variable valve lift mechanism, or a control module for executing a control method based on the variable valve lift mechanism loaded in the control device based on the variable valve lift mechanism. In the embodiment of the present application, a control method based on a variable valve lift mechanism is described by taking a control device based on a variable valve lift mechanism as an example to execute loading of a control method based on a variable valve lift mechanism.
Referring to fig. 8, a block diagram of a control device 800 based on a continuously variable valve lift mechanism according to an embodiment of the present application is shown, and as shown in fig. 8, the device is applied to a controller of a vehicle, and the variable valve lift mechanism is used for adjusting a valve lift of an engine, and the device includes:
the first control module 801 is configured to control the continuously variable valve lift mechanism to enter a first self-learning mode when it is determined that the continuously variable valve lift mechanism is in an operating state, where the first self-learning mode is configured to drive the continuously variable valve lift mechanism to move from a position corresponding to a first valve lift to a position corresponding to a second valve lift.
The first determining module 802 is configured to record first information corresponding to the first self-learning mode and determine a first target preset condition according to the first information and the first preset condition, where the first information includes at least control information when the continuously variable valve lift mechanism executes the first valve lift and control information when the second valve lift is executed, and the first preset condition is determined according to an operating characteristic of the continuously variable valve lift mechanism.
The first switching module 803 is configured to control the continuously variable valve lift mechanism to perform lift switching if the continuously variable valve lift mechanism meets a first target preset condition.
In summary, in the control device based on the continuously variable valve lift mechanism provided in the embodiment of the present application, the first control module controls the continuously variable valve lift mechanism to enter the first self-learning mode when determining that the continuously variable valve lift mechanism is in the working state, the first self-learning mode is used for driving the continuously variable valve lift mechanism to move from the position corresponding to the first valve lift to the position corresponding to the second valve lift, the first determination module generates the first target preset condition when the first self-learning mode meets the first preset condition, and the first switching module controls the continuously variable valve lift mechanism to perform lift switching when the continuously variable valve lift mechanism meets the first target preset condition. According to the method and the device, the switching condition between two valve lifts of the continuous variable valve lift mechanism is detected through the self-learning mode, and then the target preset condition for lift switching is flexibly adjusted according to the self-learning mode, so that the control accuracy of the continuous variable valve lift mechanism is improved.
Optionally, the continuously variable valve lift mechanism includes at least two valve lifts, a first valve lift being a minimum valve lift and a second valve lift being a maximum valve lift.
Optionally, the first determining module 802 is further configured to obtain first information of the continuously variable valve lift mechanism executing the first self-learning mode, where the first information includes at least a rotation angle of the continuously variable valve lift mechanism in the first self-learning mode, and feedback voltages of the continuously variable valve lift mechanism in the first valve lift and the second valve lift, respectively; under the condition that the first information meets a first preset condition, the first preset condition at least comprises that the rotation angle is in a preset rotation angle interval, the feedback voltage of the first valve lift is in a preset first feedback voltage interval, and the feedback voltage of the second valve lift is in a preset second feedback voltage interval; determining a first target preset condition by the deviation interval and a first preset condition, wherein the first target preset condition comprises the first preset condition and a condition meeting the deviation interval corresponding to the first information.
Optionally, the continuously variable valve lift mechanism-based control apparatus 800 further includes:
The second control module is used for controlling the continuously variable valve lift mechanism to enter a second self-learning mode, and the second self-learning mode is used for driving the continuously variable valve lift mechanism to move to a position corresponding to the first valve lift or to move to a position corresponding to the second valve lift.
The second determining module is configured to generate a second target preset condition when the second self-learning mode meets the first target preset condition, where the second target preset condition is determined by second information corresponding to the second self-learning mode and the first target preset condition, and the second information at least includes control information corresponding to the execution of the first valve lift by the continuously variable valve lift mechanism, or control information corresponding to the execution of the second valve lift by the continuously variable valve lift mechanism.
And the second switching module is used for controlling the continuously variable valve lift mechanism to execute lift switching under the condition that the continuously variable valve lift mechanism meets a second target preset condition.
Optionally, the second determining module is further configured to obtain second information of the continuous variable valve lift mechanism executing a second self-learning mode, where the second information includes at least a rotation angle of the continuous variable valve lift mechanism in the second self-learning mode, and a feedback voltage of the continuous variable valve lift mechanism in the first valve lift or the second valve lift; acquiring a deviation interval corresponding to the second information when the second information meets the first target preset condition; and determining a second target preset condition according to the deviation interval and the first target preset condition, wherein the second target preset condition comprises a condition that the first target preset condition and the second information meet the corresponding deviation interval.
Optionally, the continuously variable valve lift mechanism-based control apparatus 800 further includes: the fault module is used for giving out a fault alarm when the first self-learning mode does not meet the first preset condition, controlling the continuous variable valve lift mechanism to enter a limp-home mode, and switching the continuous variable valve lift mechanism to a position corresponding to the maximum valve lift in the limp-home mode; in the case where lift switching is not performed, a malfunction alarm is issued, and the continuously variable valve lift mechanism is controlled to enter the limp-home mode.
In summary, in the control device based on the continuously variable valve lift mechanism provided in the embodiment of the present application, the first control module controls the continuously variable valve lift mechanism to enter the first self-learning mode when determining that the continuously variable valve lift mechanism is in the working state, the first self-learning mode is used for driving the continuously variable valve lift mechanism to move from the position corresponding to the first valve lift to the position corresponding to the second valve lift, the first determination module generates the first target preset condition when the first self-learning mode meets the first preset condition, and the first switching module controls the continuously variable valve lift mechanism to perform lift switching when the continuously variable valve lift mechanism meets the first target preset condition. According to the method and the device, the switching condition between two valve lifts of the continuous variable valve lift mechanism is detected through the self-learning mode, and then the target preset condition for lift switching is flexibly adjusted according to the self-learning mode, so that the control accuracy of the continuous variable valve lift mechanism is improved. Meanwhile, the second self-learning mode realizes further control of the continuously variable valve lift mechanism, and ensures the reliability and durability of the mechanism.
The control device based on the continuously variable valve lift mechanism in the embodiment of the application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device may be a mobile electronic device or a non-mobile electronic device. By way of example, the mobile electronic device may be a cell phone, tablet computer, notebook computer, palm computer, vehicle-mounted electronic device, wearable device, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), netbook or personal digital assistant (personal digital assistant, PDA), etc., and the non-mobile electronic device may be a server, network attached storage (Network Attached Storage, NAS), personal computer (personal computer, PC), television (TV), teller machine or self-service machine, etc., and the embodiments of the present application are not limited in particular.
The control device based on the continuously variable valve lift mechanism in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
The control device based on the continuous variable valve lift mechanism provided in the embodiment of the present application can implement each process implemented by the control device based on the continuous variable valve lift mechanism in the method embodiment of fig. 2 to 7, and in order to avoid repetition, a detailed description is omitted here.
Optionally, referring to fig. 9, the embodiment of the present application further provides an electronic device 900, including a processor 910, a memory 909, and a program or an instruction stored in the memory 909 and capable of running on the processor 910, where the program or the instruction implements each process of the above embodiment of the control method based on the variable valve lift mechanism when executed by the processor 910, and the same technical effects can be achieved, so that repetition is avoided and redundant description is omitted herein.
It should be noted that, the electronic device in the embodiment of the present application includes the mobile electronic device and the non-mobile electronic device described above.
Fig. 10 is a schematic hardware structure of an electronic device implementing an embodiment of the present application.
The electronic device 1000 includes, but is not limited to: radio frequency unit 1001, network module 1002, audio output unit 1003, input unit 1004, sensor 1005, display unit 1006, user input unit 1007, interface unit 1008, memory 1009, and processor 1010.
Those skilled in the art will appreciate that the electronic device 1000 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 1010 by a power management system to perform functions such as managing charge, discharge, and power consumption by the power management system. Drawing of the figure 10The electronic device structure shown in (c) does not constitute a limitation of the electronic device, and the electronic device may include more or less components than shown in the figures, or may combine some components, or may be arranged in different components, which are not described here.
The radio frequency unit 1001 is configured to control the continuously variable valve lift mechanism to enter a first self-learning mode when determining that the continuously variable valve lift mechanism is in a working state, where the first self-learning mode is used to drive the continuously variable valve lift mechanism to move from a position corresponding to a first valve lift to a position corresponding to a second valve lift.
And an interface unit 1008, configured to generate a first target preset condition when the first self-learning mode meets a first preset condition, where the first target preset condition is determined by first information corresponding to the first self-learning mode and the first preset condition, the first information at least includes control information when the continuously variable valve lift mechanism executes the first valve lift, and control information when the second valve lift is executed, and the first preset condition is determined according to an operating characteristic of the continuously variable valve lift mechanism.
And a processor 1010 for controlling the continuously variable valve lift mechanism to perform lift switching in the case where the continuously variable valve lift mechanism satisfies a first target preset condition.
In the method, under the condition that the continuous variable valve lift mechanism is determined to be in a working state, the continuous variable valve lift mechanism is controlled to enter a first self-learning mode, the first self-learning mode is used for driving the continuous variable valve lift mechanism to move from a position corresponding to a first valve lift to a position corresponding to a second valve lift, under the condition that the first self-learning mode meets a first preset condition, a first target preset condition is generated, and under the condition that the continuous variable valve lift mechanism meets the first target preset condition, the continuous variable valve lift mechanism is controlled to execute lift switching. According to the method and the device, the switching condition between two valve lifts of the continuous variable valve lift mechanism is detected through the self-learning mode, and then the target preset condition for lift switching is flexibly adjusted according to the self-learning mode, so that the control accuracy of the continuous variable valve lift mechanism is improved.
Optionally, the interface unit 1008 is further configured to obtain first information of the continuous variable valve lift mechanism executing a first self-learning mode, where the first information includes at least a rotation angle of the continuous variable valve lift mechanism in the first self-learning mode, and feedback voltages of the continuous variable valve lift mechanism in the first valve lift and the second valve lift, respectively;
Under the condition that the first information meets a first preset condition, acquiring a deviation interval corresponding to the first information, wherein the first preset condition at least comprises that the rotation angle is in a preset rotation angle interval, the feedback voltage of the first valve lift is in a preset first feedback voltage interval, and the feedback voltage of the second valve lift is in a preset second feedback voltage interval;
determining a first target preset condition by the deviation interval and a first preset condition, wherein the first target preset condition comprises the first preset condition and a condition meeting the deviation interval corresponding to the first information.
Optionally, the radio frequency unit 1001 is further configured to control the continuously variable valve lift mechanism to enter a second self-learning mode, where the second self-learning mode is used to drive the continuously variable valve lift mechanism to move to a position corresponding to the first valve lift or to move to a position corresponding to the second valve lift.
Optionally, the interface unit 1008 is further configured to generate a second target preset condition when the second self-learning mode meets the first target preset condition, where the second target preset condition is determined by second information corresponding to the second self-learning mode and the first target preset condition, and the second information at least includes control information corresponding to the execution of the first valve lift by the continuously variable valve lift mechanism, or control information corresponding to the execution of the second valve lift by the continuously variable valve lift mechanism.
Optionally, the processor 1010 is further configured to control the continuously variable valve lift mechanism to perform lift switching if the continuously variable valve lift mechanism meets a second target preset condition.
Optionally, the interface unit 1008 is further configured to obtain second information of the continuous variable valve lift mechanism executing a second self-learning mode, where the second information includes at least a rotation angle of the continuous variable valve lift mechanism in the second self-learning mode, and a feedback voltage of the continuous variable valve lift mechanism in the first valve lift or the second valve lift; acquiring a deviation interval corresponding to the second information when the second information meets the first target preset condition; and determining a second target preset condition according to the deviation interval and the first target preset condition, wherein the second target preset condition comprises a condition that the first target preset condition and the second information meet the corresponding deviation interval.
Optionally, the processor 1010 is further configured to send out a fault alarm when the first self-learning mode does not meet the first preset condition, and control the continuously variable valve lift mechanism to enter a limp-home mode, where the continuously variable valve lift mechanism is switched to a position corresponding to the maximum valve lift; in the case where lift switching is not performed, a malfunction alarm is issued, and the continuously variable valve lift mechanism is controlled to enter the limp-home mode.
In the method, under the condition that the continuous variable valve lift mechanism is determined to be in a working state, the continuous variable valve lift mechanism is controlled to enter a first self-learning mode, the first self-learning mode is used for driving the continuous variable valve lift mechanism to move from a position corresponding to a first valve lift to a position corresponding to a second valve lift, under the condition that the first self-learning mode meets a first preset condition, a first target preset condition is generated, and under the condition that the continuous variable valve lift mechanism meets the first target preset condition, the continuous variable valve lift mechanism is controlled to execute lift switching. According to the method and the device, the switching condition between two valve lifts of the continuous variable valve lift mechanism is detected through the self-learning mode, and then the target preset condition for lift switching is flexibly adjusted according to the self-learning mode, so that the control accuracy of the continuous variable valve lift mechanism is improved. Meanwhile, the second self-learning mode realizes further control of the continuously variable valve lift mechanism, and ensures the reliability and durability of the mechanism.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the processes of the above embodiment of the control method based on the continuous variable valve lift mechanism are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no redundant description is given here.
Wherein the processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or an instruction, each process of the above embodiment of the control method based on the continuous variable valve lift mechanism is implemented, and the same technical effect can be achieved, so that repetition is avoided, and no redundant description is provided here.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the related art in the form of a software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), including several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims (14)

1. A control method based on a continuously variable valve lift mechanism, applied to a controller of a vehicle, characterized in that the method comprises:
controlling the continuously variable valve lift mechanism to enter a first self-learning mode under the condition that the continuously variable valve lift mechanism is determined to be in a working state, wherein the first self-learning mode is used for driving the continuously variable valve lift mechanism to move from a position corresponding to a first valve lift to a position corresponding to a second valve lift;
generating a first target preset condition under the condition that the first self-learning mode meets a first preset condition, wherein the first target preset condition is determined by first information corresponding to the first self-learning mode and the first preset condition, the first information at least comprises control information when the continuously variable valve lift mechanism executes the first valve lift and control information when the second valve lift is executed, and the first preset condition is determined according to the working characteristic of the continuously variable valve lift mechanism;
and controlling the continuously variable valve lift mechanism to execute lift switching under the condition that the continuously variable valve lift mechanism meets a first target preset condition.
2. The method of claim 1, wherein the step of determining the position of the substrate comprises,
the continuously variable valve lift mechanism includes at least two valve lifts;
the first valve lift is a minimum valve lift and the second valve lift is a maximum valve lift.
3. The method according to claim 2, wherein generating the first target preset condition if the first self-learning mode satisfies the first preset condition comprises:
acquiring first information of the continuous variable valve lift mechanism executing the first self-learning mode, wherein the first information at least comprises a rotation angle of the continuous variable valve lift mechanism in the first self-learning mode and feedback voltages of the continuous variable valve lift mechanism in the first valve lift and the second valve lift respectively;
acquiring a deviation interval corresponding to the first information under the condition that the first information meets a first preset condition, wherein the first preset condition at least comprises that the rotation angle is in a preset rotation angle interval, the feedback voltage of the first valve lift is in a preset first feedback voltage interval, and the feedback voltage of the second valve lift is in a preset second feedback voltage interval;
And determining a first target preset condition according to the deviation interval and the first preset condition, wherein the first target preset condition comprises the first preset condition and a condition meeting the deviation interval corresponding to the first information.
4. The method according to claim 1, wherein the method further comprises:
controlling the continuously variable valve lift mechanism to enter a second self-learning mode, wherein the second self-learning mode is used for driving the continuously variable valve lift mechanism to move to a position corresponding to the first valve lift or to move to a position corresponding to the second valve lift;
generating a second target preset condition when the second self-learning mode meets a first target preset condition, wherein the second target preset condition is determined by second information corresponding to the second self-learning mode and the first target preset condition, and the second information at least comprises control information corresponding to the first valve lift executed by the continuously variable valve lift mechanism or control information corresponding to the second valve lift executed by the continuously variable valve lift mechanism;
and controlling the continuously variable valve lift mechanism to execute lift switching under the condition that the continuously variable valve lift mechanism meets a second target preset condition.
5. The method of claim 4, wherein generating the second target preset condition when the second self-learning mode satisfies the first target preset condition comprises:
acquiring second information of the continuously variable valve lift mechanism for executing the second self-learning mode, wherein the second information at least comprises a rotation angle of the continuously variable valve lift mechanism in the second self-learning mode and a feedback voltage of the continuously variable valve lift mechanism in the first valve lift or the second valve lift;
acquiring a deviation interval corresponding to the second information when the second information meets the first target preset condition;
and determining a second target preset condition according to the deviation interval and the first target preset condition, wherein the second target preset condition comprises a condition that the first target preset condition and the second information meet the corresponding deviation interval.
6. A method according to any one of claims 1 to 3, further comprising:
under the condition that the first self-learning mode does not meet a first preset condition, a fault alarm is sent out, the continuous variable valve lift mechanism is controlled to enter a limp-home mode, and the continuous variable valve lift mechanism is switched to a position corresponding to the maximum valve lift in the limp-home mode;
And under the condition that the lift switching is not performed, a fault alarm is sent out, and the continuously variable valve lift mechanism is controlled to enter a limp mode.
7. A control device based on a continuously variable valve lift mechanism, applied to a controller of a vehicle, characterized in that the device comprises:
the first control module is used for controlling the continuously variable valve lift mechanism to enter a first self-learning mode under the condition that the continuously variable valve lift mechanism is determined to be in a working state, and the first self-learning mode is used for driving the continuously variable valve lift mechanism to move from a position corresponding to a first valve lift to a position corresponding to a second valve lift;
a first determining module, configured to record first information corresponding to the first self-learning mode and determine a first target preset condition according to the first information and the first preset condition, where the first information includes at least control information when the continuously variable valve lift mechanism executes the first valve lift and control information when the second valve lift is executed, and the first preset condition is determined according to an operating characteristic of the continuously variable valve lift mechanism;
And the first switching module is used for controlling the continuously variable valve lift mechanism to execute lift switching under the condition that the continuously variable valve lift mechanism meets a first target preset condition.
8. The apparatus of claim 7, wherein the device comprises a plurality of sensors,
the continuously variable valve lift mechanism includes at least two valve lifts;
the first valve lift is a minimum valve lift and the second valve lift is a maximum valve lift.
9. The apparatus of claim 8, wherein the device comprises a plurality of sensors,
the first determining module is further configured to obtain first information of the continuously variable valve lift mechanism executing the first self-learning mode, where the first information includes at least a rotation angle of the continuously variable valve lift mechanism in the first self-learning mode, and feedback voltages of the continuously variable valve lift mechanism in the first valve lift and the second valve lift, respectively;
acquiring a deviation interval corresponding to the first information under the condition that the first information meets a first preset condition, wherein the first preset condition at least comprises that the rotation angle is in a preset rotation angle interval, the feedback voltage of the first valve lift is in a preset first feedback voltage interval, and the feedback voltage of the second valve lift is in a preset second feedback voltage interval;
And determining a first target preset condition according to the deviation interval and the first preset condition, wherein the first target preset condition comprises the first preset condition and a condition meeting the deviation interval corresponding to the first information.
10. The apparatus of claim 7, wherein the apparatus further comprises:
the second control module is used for controlling the continuously variable valve lift mechanism to enter a second self-learning mode, and the second self-learning mode is used for driving the continuously variable valve lift mechanism to move to a position corresponding to the first valve lift or to a position corresponding to the second valve lift;
the second determining module is configured to generate a second target preset condition when the second self-learning mode meets a first target preset condition, where the second target preset condition is determined by second information corresponding to the second self-learning mode and the first target preset condition, where the second information at least includes control information corresponding to the execution of the first valve lift by the continuously variable valve lift mechanism, or control information corresponding to the execution of the second valve lift by the continuously variable valve lift mechanism;
And the second switching module is used for controlling the continuously variable valve lift mechanism to execute lift switching under the condition that the continuously variable valve lift mechanism meets a second target preset condition.
11. The apparatus of claim 10, wherein the device comprises a plurality of sensors,
the second determining module is further configured to obtain second information of the continuously variable valve lift mechanism executing the second self-learning mode, where the second information includes at least a rotation angle of the continuously variable valve lift mechanism in the second self-learning mode, and a feedback voltage of the continuously variable valve lift mechanism in the first valve lift or the second valve lift;
acquiring a deviation interval corresponding to the second information when the second information meets the first target preset condition;
and determining a second target preset condition according to the deviation interval and the first target preset condition, wherein the second target preset condition comprises a condition that the first target preset condition and the second information meet the corresponding deviation interval.
12. The apparatus according to any one of claims 7 to 9, further comprising:
The fault module is used for sending out a fault alarm and controlling the continuous variable valve lift mechanism to enter a limp-home mode when the first self-learning mode does not meet a first preset condition, and the continuous variable valve lift mechanism is switched to a position corresponding to the maximum valve lift in the limp-home mode;
and under the condition that the lift switching is not performed, a fault alarm is sent out, and the continuously variable valve lift mechanism is controlled to enter a limp mode.
13. An electronic device comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, implement the steps of the continuously variable valve lift mechanism-based control method according to any one of claims 1-6.
14. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions, which when executed by a processor, realize the steps of the continuously variable valve lift mechanism-based control method according to any one of claims 1 to 6.
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JP2001254639A (en) * 2000-03-09 2001-09-21 Toyota Motor Corp Valve characteristic control device of internal combustion engine
JP4429204B2 (en) * 2005-05-12 2010-03-10 富士通テン株式会社 Variable valve controller
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CN108561231B (en) * 2017-06-09 2020-09-04 长城汽车股份有限公司 Control strategy for continuously variable valve lift mechanism
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KR20210006083A (en) * 2019-07-08 2021-01-18 현대자동차주식회사 Method Of Two-Step VVL Lift Malfunction Avoidance Learning Control and Electric Two-Step VVL System Thereof

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