CN111997810A - Control strategy correction method, system, electronic device and readable storage medium - Google Patents
Control strategy correction method, system, electronic device and readable storage medium Download PDFInfo
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- 238000011217 control strategy Methods 0.000 title claims abstract description 115
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
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Abstract
The invention provides a control strategy correction method, a system, electronic equipment and a readable storage medium, wherein the control strategy correction applied to a vehicle-mounted network unit comprises the following steps: determining the current geographic position; sending an acquisition request for one or more climate/geographic information at the geographic location to an Internet of vehicles server; receiving one or more of the climate/geographic information at the geographic location fed back by the Internet of vehicles server; and sending one or more types of the climate/geographic information to a controller so that the controller modifies the control strategy of the actuator according to the one or more types of the climate/geographic information. The invention can solve the problem that the correction of the control strategy is influenced because the monitoring of the environmental factors is inconvenient in the prior art.
Description
Technical Field
The invention relates to the technical field of vehicle networking, in particular to a control strategy correction method, a control strategy correction system, electronic equipment and a readable storage medium.
Background
Certain environmental factors have a significant impact on actuator control strategy during vehicle operation. The following explains the ignition control strategy of the engine as an example.
In the working cycle of a gasoline engine, a spark plug ignites a combustible mixture in a combustion chamber before a piston reaches a compression top dead center, and a crank angle from an ignition timing to the compression top dead center is referred to as an ignition advance angle (ignition angle for short). The ignition angle is one of the most critical parameters of a plurality of parameters of the gasoline engine, and directly influences the dynamic property, the economical efficiency and the emission index of the engine.
FIG. 1 schematically shows the relationship of ignition angle to cylinder pressure curve, as shown in cylinder pressure curve 2, with an excessively advanced ignition angle Zb likely to cause knocking combustion; as shown in the cylinder pressure curve 3 of fig. 1, an excessively retarded firing angle Zc causes a drop in engine power torque, while exhaust gas temperature increases significantly; as shown in the cylinder pressure curve 1, the proper ignition angle Za for the engine to achieve optimum power, economy and minimum emissions is referred to as the optimum ignition angle Za.
Fig. 2 schematically shows the relationship between the ignition angle and the torque, and for fixed boundary conditions such as cooling water temperature, intake air temperature and humidity, and engine control parameters such as camshaft angle, injection phase, and mixture air-fuel ratio, as shown in fig. 2, the engine torque rises significantly as the ignition increases until the knocking combustion boundary.
Knocking combustion should be avoided. When knocking occurs, the sharp increase of the combustion temperature in the cylinder creates favorable conditions for generating NOx emitted, so that the emission is deteriorated; when strong knocking or even super knocking occurs, the service life of the engine parts is likely to be reduced, and the engine is likely to be damaged. Considering that the working environment of automobiles is very wide, various extreme climates need to be covered, such as the ambient temperature from minus 40 ℃ to over 50 ℃, the air humidity from 0% to 100% and the altitude from 0 meter to over 5000 meters. And the knock boundary is greatly influenced by the boundary condition, which brings great difficulty to the development of the engine. Factors that often cause knock are: compression ratio, cylinder air input, gasoline products, engine aging (carbon deposition), air input temperature, air input humidity, cooling water temperature, intake and exhaust VVT valve overlap angle, mixed gas air-fuel ratio, engine oil, hot spots in a cylinder caused by a combustion chamber structure, residual waste gas in the cylinder of the cylinder and the like.
For example, the engine's tendency to knock increases with increasing intake air temperature and increases with decreasing humidity. In other words, the ignition angle is retarded with an increase in intake air temperature and with a decrease in air humidity due to an increase in the tendency of knocking combustion.
It can be seen that the influence of environmental factors such as intake air temperature and air humidity on the ignition angle control strategy of the engine is very important. In the existing main stream engine knock control technology, an additional sensor is needed to monitor corresponding environmental factors for correcting a control strategy of an ignition angle and improving the control precision of the ignition angle, or certain factors such as air inlet humidity and particulate matter are not monitored.
It can be seen that, due to the inconvenience of monitoring these ring mirror factors in the prior art, the modification of the corresponding control strategy is affected.
Disclosure of Invention
The invention aims to provide a control strategy correction method, a control strategy correction system, electronic equipment and a readable storage medium, and aims to solve the problem that the correction of a control strategy is influenced due to inconvenience in monitoring of environmental factors in the prior art. The specific technical scheme is as follows:
in order to achieve the above technical object, the present invention provides a control policy modification method, applied to a vehicle-mounted network unit, including:
determining the current geographic position;
sending an acquisition request for one or more climate/geographic information at the geographic location to an Internet of vehicles server;
receiving one or more of the climate/geographic information at the geographic location fed back by the Internet of vehicles server;
and sending one or more types of the climate/geographic information to a controller so that the controller modifies the control strategy of the actuator according to the one or more types of the climate/geographic information.
Optionally, in the control strategy modification method, the climate/geographic information includes: air temperature, air humidity, particulate matter content in air, sulphide content in air, wind speed, wind direction and altitude.
Optionally, in the control strategy modification method, the controller is an engine controller, the actuator is an engine, and the control strategy is an ignition angle control strategy.
Optionally, in the control strategy modification method, the method for modifying the ignition angle control strategy of the engine according to one or more types of the climate/geographic information by the engine controller comprises the following steps:
the engine controller determining whether one or more of the climate/geographic information is valid;
if the correction value is valid, inquiring an ignition angle correction table corresponding to each type of climate/geographic information so as to determine a reference correction value of the climate/geographic information to the ignition angle; adding the reference correction value of various climate/geographic information to the ignition angle with the basic ignition angle to obtain a target ignition angle;
and if the target ignition angle is invalid, directly adding various substitution correction values of the climate/geographic information to the ignition angle with the basic ignition angle to obtain the target ignition angle.
Optionally, in the control strategy modification method, the method for modifying the ignition angle control strategy of the engine according to one or more types of the climate/geographic information by the engine controller comprises the following steps:
the engine controller determining whether one or more of the climate/geographic information is valid;
if the information is valid, acquiring and processing a knock signal of a knock sensor, storing the knock signal, the weather/geographic information, the engine speed and the load in a partition mode aiming at each kind of weather/geographic information, and calculating a reference correction value of the weather/geographic information to an ignition angle by adopting a preset algorithm; adding the reference correction value of various climate/geographic information to the ignition angle with the basic ignition angle to obtain a target ignition angle;
if the weather/geographic information is invalid or the knock signal does not exist, calculating a substitution correction value of the weather/geographic information to the ignition angle by adopting the preset algorithm aiming at each type of the weather/geographic information; and adding the various weather/geographic information to the substitute correction value of the ignition angle and the basic ignition angle to obtain the target ignition angle.
Based on the same inventive concept, the invention also provides a control strategy correction method, which is applied to a controller and comprises the following steps:
receiving one or more types of climate/geographic information at the current geographic position sent by the vehicle-mounted network unit; wherein the one or more climate/geographic information at the geographic location is fed back by a vehicle web server;
and modifying the control strategy of the actuator according to one or more types of the climate/geographic information.
Optionally, in the control strategy modification method, the climate/geographic information includes: air temperature, air humidity, particulate matter content in air, sulphide content in air, wind speed, wind direction and altitude.
Optionally, in the control strategy modification method, the controller is an engine controller, the actuator is an engine, and the control strategy is an ignition angle control strategy.
Optionally, in the control strategy modification method, modifying the control strategy of the actuator according to one or more of the climate/geographic information includes:
determining whether one or more of the climate/geographic information is valid;
if the correction value is valid, inquiring a preset ignition angle correction table corresponding to each type of climate/geographic information so as to determine a reference correction value of the climate/geographic information to the ignition angle; adding the reference correction value of various climate/geographic information to the ignition angle with the basic ignition angle to obtain a target ignition angle;
and if the target ignition angle is invalid, directly adding the preset substitution correction value of the various climate/geographic information to the ignition angle with the basic ignition angle to obtain the target ignition angle.
Optionally, in the control strategy modification method, modifying the ignition angle control strategy of the actuator according to one or more of the climate/geographic information includes:
determining whether one or more of the climate/geographic information is valid;
if the information is valid, acquiring and processing a knock signal of a knock sensor, storing the knock signal, the weather/geographic information, the engine speed and the load in a partition mode aiming at each type of the weather/geographic information, and calculating a reference correction value of the weather/geographic information to an ignition angle by adopting a preset algorithm; adding the reference correction value of various climate/geographic information to the ignition angle with the basic ignition angle to obtain a target ignition angle;
if the weather/geographic information is invalid or the knock signal does not exist, calculating a substitution correction value of the weather/geographic information to the ignition angle by adopting the preset algorithm aiming at each type of the weather/geographic information; and adding the various weather/geographic information to the substitute correction value of the ignition angle and the basic ignition angle to obtain the target ignition angle.
Based on the same inventive concept, the invention also provides a control strategy modification system, which comprises: vehicle network unit, car networking server and controller, wherein:
the vehicle-mounted network unit is used for determining the current geographic position and sending an acquisition request aiming at one or more types of climate/geographic information at the geographic position to the vehicle networking server;
the vehicle networking server is used for determining one or more types of climate/geographic information at the geographic position and feeding back the climate/geographic information to the vehicle network unit;
the vehicular network unit is further used for sending one or more types of the climate/geographic information to the controller;
the controller is used for modifying the control strategy of the actuator according to one or more types of the climate/geographic information.
Optionally, in the control strategy modification system, the climate/geographic information includes: air temperature, air humidity, particulate matter content in air, sulphide content in air, wind speed, wind direction and altitude.
Optionally, in the control strategy modification system, the controller is an engine controller, the actuator is an engine, and the control strategy is an ignition angle control strategy.
Optionally, in the control strategy modification system, the engine controller is specifically configured to:
determining whether one or more of the climate/geographic information is valid;
if the correction value is valid, inquiring a preset ignition angle correction table corresponding to each type of climate/geographic information so as to determine a reference correction value of the climate/geographic information to the ignition angle; adding the reference correction value of various climate/geographic information to the ignition angle with the basic ignition angle to obtain a target ignition angle;
and if the target ignition angle is invalid, directly adding the preset substitution correction value of the various climate/geographic information to the ignition angle with the basic ignition angle to obtain the target ignition angle.
Optionally, in the control strategy modification system, the engine controller is specifically configured to:
determining whether one or more of the climate/geographic information is valid;
if the information is valid, acquiring and processing a knock signal of a knock sensor, storing the knock signal, the weather/geographic information, the engine speed and the load in a partition mode aiming at each type of the weather/geographic information, and calculating a reference correction value of the weather/geographic information to an ignition angle by adopting a preset algorithm; adding the reference correction value of various climate/geographic information to the ignition angle with the basic ignition angle to obtain a target ignition angle;
if the weather/geographic information is invalid or the knock signal does not exist, calculating a substitution correction value of the weather/geographic information to the ignition angle by adopting the preset algorithm aiming at each type of the weather/geographic information; and adding the various weather/geographic information to the substitute correction value of the ignition angle and the basic ignition angle to obtain the target ignition angle.
Based on the same inventive concept, an embodiment of the present invention further provides an electronic device, which includes a processor and a memory, where the memory stores instructions, and when the instructions are executed by the processor, the electronic device can implement the control policy modification method applied to the vehicle-mounted network unit or the control policy modification method applied to the controller according to the present invention.
Based on the same inventive concept, the present invention also provides a readable storage medium, on which a computer program is stored, which, when executed by a processor, is capable of implementing the control policy modification method applied to the in-vehicle network unit or the control policy modification method applied to the controller of the present invention.
Compared with the prior art, the control strategy correction method, the control strategy correction system, the electronic equipment and the readable storage medium have the following beneficial effects:
the vehicle-mounted network unit determines the current geographical position, sends an acquisition request aiming at one or more types of climate/geographical information of the current geographical position to the vehicle networking server, sends the climate/geographical information fed back by the vehicle networking server to the controller after acquiring the climate/geographical information, and the controller corrects the control strategy of the actuator according to the climate/geographical information. The invention adopts the vehicle networking technology to acquire the local climate/geographic information, solves the problem of inconvenient environmental information monitoring in the prior art, does not need to add an additional sensor, reduces the cost, simultaneously realizes the correction of the control strategy of the vehicle according to the current environmental information, and improves the reliability of the vehicle operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a graph of ignition angle versus cylinder pressure curve;
FIG. 2 is a graph of spark angle versus torque;
FIG. 3 is a schematic structural diagram of a control strategy modification system according to an embodiment of the present invention;
FIG. 4 is a model logic block diagram of a control strategy modification system in an exemplary embodiment;
FIG. 5 is a schematic diagram of ignition angle correction using open loop feedforward control calculation logic in one embodiment;
FIG. 6 is a schematic illustration of spark angle correction using self-learning feedback control calculation logic in an exemplary embodiment;
fig. 7 is a schematic structural diagram of a control strategy modification method according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a control strategy modification method according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings in order to make the objects and features of the present invention more comprehensible, however, the present invention may be realized in various forms and should not be limited to the embodiments described above. Furthermore, it will be understood that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer program instructions. It is well known to those skilled in the art that implementation by hardware, by software, and by a combination of software and hardware are equivalent.
In order to solve the problem that the control strategy correction is influenced due to inconvenience in monitoring of environmental factors in the prior art, the invention provides a control strategy correction method and system based on a vehicle network technology and a readable storage medium.
Referring to fig. 3, an embodiment of the present invention provides a control policy modification system that may include an in-vehicle network unit 10, an in-vehicle network server 20, and a controller 30, wherein,
the vehicle-mounted network unit 10 is configured to determine a current geographic location, and send an acquisition request for one or more types of climate/geographic information at the geographic location to the vehicle networking server 20;
the vehicle networking server 20 is used for determining one or more types of climate/geographic information at the geographic position and feeding back the climate/geographic information to the vehicle network unit 10;
the vehicular network unit 10 is further configured to send one or more types of the climate/geographic information to the controller 30;
the controller 30 is configured to modify the actuator control strategy based on one or more of the climate/geographic information.
In this embodiment, the vehicle-mounted network unit 10 determines the current geographic location, sends an acquisition request for one or more types of climate/geographic information of the current geographic location to the vehicle networking server 20, sends the obtained climate/geographic information fed back by the vehicle networking server 20 to the controller 30, and the controller 30 modifies the control strategy of the actuator according to the climate/geographic information. The embodiment adopts the vehicle networking technology to acquire local climate/geographic information, solves the problem of inconvenience in monitoring of environmental information in the prior art, does not need to add an additional sensor, reduces the cost, and simultaneously realizes correction of the control strategy of the vehicle according to the current environmental information, thereby improving the reliability of vehicle operation.
Preferably, the climate/geographical information may include: the air temperature, the air humidity, the content of particulate matters in the air, the content of sulfides in the air, the wind speed, the wind direction, the altitude and the like, and other environmental information can be included, which is not limited in this embodiment.
In one particular embodiment, the controller 30 may be an engine controller, the actuator may be an engine, and the control strategy may be an ignition angle control strategy. It is understood that the control strategy modification system of the present embodiment can be used for the control strategy modification of other engine models, such as an engine charge model, an engine torque model, an engine mixer model, etc., in addition to the engine ignition angle control strategy described above, and can be used for the control strategy modification of other vehicle models, such as a vehicle drivability model, a vehicle battery management model, a vehicle motor management model, etc., in addition to the control strategy modification for the engine-related model. Of course, the control strategy modification system of the embodiment can be applied to the relevant control strategy of a diesel engine control system besides the relevant control strategy of the gasoline engine control system.
The control strategy modification system of the present invention will be described below by taking the modification of the ignition angle control strategy as an example.
Fig. 4 shows a specific embodiment of the control strategy modification system applied in an automobile, as shown in fig. 4, the internet of vehicles server 20 is an internet device capable of communicating with the on-board network unit 10, the on-board network unit 10 receives cloud information of the internet, the cloud information includes one or more types of climate/geographic information of the current geographic location of the automobile, the cloud information is communicated with the controller 30 (i.e. the engine controller ECU) through the automobile CAN bus, the cloud information is sent to the ECU, and the ECU performs modification of the ignition angle control strategy according to a set program according to the cloud information.
The calculation logic of the engine controller ECU for making the ignition angle control strategy corrections based on the cloud information may employ various logics such as open-loop feedforward control and self-learning feedback control.
Fig. 5 is a schematic diagram showing the correction of the ignition angle control strategy by the ECU using open loop feedforward control calculation logic, and the air humidity is taken as an example for illustration, but the invention is not limited thereto.
Firstly, the ECU judges whether the air humidity information is effective, if so, an ignition angle correction table corresponding to the air humidity is inquired to obtain a reference correction value of the air humidity information to the ignition angle, and then the reference correction value of the air humidity information to the ignition angle is added with a basic ignition angle to obtain a target ignition angle. The ignition angle correction table corresponding to the air humidity can be established in advance according to air humidity information, engine speed, load and the like, so that the ignition angle correction table corresponding to the air humidity can be inquired according to the air humidity information, the engine speed and the load in the cloud information, and the reference correction value of the air humidity information to the ignition angle is obtained.
Of course, in other embodiments, if other environment information, such as air temperature information, may also be included in the cloud information, similarly, the ignition angle correction table corresponding to the air temperature is queried to obtain the reference correction value of the air temperature information to the ignition angle, and then the reference correction value of the air temperature information to the ignition angle and the reference correction value of the air humidity information to the ignition angle are simultaneously added to the basic ignition angle to obtain the target ignition angle. The ignition angle correction table corresponding to the air temperature can be established in advance according to air temperature information, the engine speed, the load and the like, so that the ignition angle correction table corresponding to the air temperature can be inquired according to the air temperature information, the engine speed and the load in the cloud information, and the reference correction value of the air temperature information to the ignition angle can be obtained.
When the ECU judges that the air humidity information is invalid, the ECU can directly output the substitute correction value of the air humidity information to the ignition angle, and the substitute correction value and the basic ignition angle are added to obtain the target ignition angle. The substitute correction value is a predetermined value. In other embodiments, if other environment information, such as air temperature information, is also included in the cloud information, the substitute correction value of the air temperature information to the ignition angle is directly output, and then the substitute correction value of the air temperature information to the ignition angle and the substitute correction value of the air humidity information to the ignition angle are simultaneously added to the basic ignition angle to obtain the target ignition angle.
It is understood that the basic ignition angle is the ignition angle calculated without considering one or more of the above-mentioned climate/geographical information, and the target ignition angle is the ignition angle calculated with considering one or more of the above-mentioned climate/geographical information, so that the ignition control of the engine with the target ignition angle can control the ignition of the engine more accurately and reliably, avoid knocking combustion, and improve fuel economy and power performance.
FIG. 6 is a schematic diagram showing the ECU employing self-learning feedback control calculation logic to modify the ignition angle control strategy, and is illustrative of, but not intended to be limiting of, the particulate matter content of air.
Firstly, the ECU judges whether the content information of the particulate matters in the air is effective, if so, the knock signal of a knock sensor KS is collected and processed, the information comprising the knock signal, the content of the particulate matters in the air, the engine speed, the load and the like is stored in a partition mode, a preset algorithm is adopted to calculate the reference correction value of the content information of the particulate matters in the air to the ignition angle, and then the reference correction value of the content information of the particulate matters in the air to the ignition angle is added with the basic ignition angle to obtain a target ignition angle. The preset algorithm may be an algorithm based on a neural network model, and may also be other algorithms, which is not limited in this embodiment.
Of course, in other embodiments, if other environment information, such as air temperature information, may also be included in the cloud information, then similarly, information including a knock signal, the air temperature information, the engine speed and the load, etc. is stored in a partitioned manner, a reference correction value of the air temperature information to the ignition angle is calculated by using a preset algorithm, and then the reference correction value of the air temperature information to the ignition angle and the reference correction value of the particulate matter content information to the ignition angle in the air are added to the basic ignition angle at the same time to obtain the target ignition angle.
And when the ECU judges that the information of the content of the particulate matters in the air is invalid or the knock signal does not exist, calculating a substitution correction value (namely a neutral value) of the information of the content of the particulate matters in the air on the ignition angle by adopting the preset algorithm, and adding the substitution correction value and the basic ignition angle to obtain the target ignition angle. In other embodiments, if other environment information, such as air temperature information, is also included in the cloud information, the preset algorithm is also used to calculate the substitute correction value of the air temperature information to the ignition angle, and then the substitute correction value of the air temperature information to the ignition angle and the substitute correction value of the content information of particulate matter in the air to the ignition angle are added to the basic ignition angle at the same time to obtain the target ignition angle.
It can be understood that, in the embodiment, the ignition control is performed on the engine at the target ignition angle, so that the engine can be controlled to ignite more accurately and reliably, knocking combustion is avoided, and the fuel economy and the dynamic property are improved.
Referring to fig. 7, based on the same inventive concept, an embodiment of the present invention further provides a control policy modification method applied to a vehicle-mounted network unit, including:
step S11, determining the current geographic position;
step S12, sending an acquisition request aiming at one or more types of climate/geographic information at the geographic position to an Internet of vehicles server;
step S13, receiving one or more types of climate/geographic information at the geographic position fed back by the Internet of vehicles server;
and step S14, sending the one or more types of climate/geographic information to a controller so that the controller can modify the control strategy of the actuator according to the one or more types of climate/geographic information.
Preferably, in the control strategy modification method, the climate/geographic information includes: air temperature, air humidity, particulate matter content in air, sulphide content in air, wind speed, wind direction and altitude.
Preferably, in the control strategy modification method, the controller is an engine controller, the actuator is an engine, and the control strategy is an ignition angle control strategy.
Preferably, in the control strategy modification method, the method for modifying the ignition angle control strategy of the engine according to one or more types of the climate/geographic information by the engine controller comprises the following steps:
the engine controller determining whether one or more of the climate/geographic information is valid;
if the correction value is valid, inquiring a preset ignition angle correction table corresponding to each type of climate/geographic information so as to determine a reference correction value of the climate/geographic information to the ignition angle; adding the reference correction value of various climate/geographic information to the ignition angle with the basic ignition angle to obtain a target ignition angle;
and if the target ignition angle is invalid, directly adding the preset substitution correction value of the various climate/geographic information to the ignition angle with the basic ignition angle to obtain the target ignition angle.
Preferably, in the control strategy modification method, the method for modifying the ignition angle control strategy of the engine according to one or more types of the climate/geographic information by the engine controller comprises the following steps:
the engine controller determining whether one or more of the climate/geographic information is valid;
if the information is valid, acquiring and processing a knock signal of a knock sensor, storing the knock signal, the weather/geographic information, the engine speed and the load in a partition mode aiming at each type of the weather/geographic information, and calculating a reference correction value of the weather/geographic information to an ignition angle by adopting a preset algorithm; adding the reference correction value of various climate/geographic information to the ignition angle with the basic ignition angle to obtain a target ignition angle;
if the weather/geographic information is invalid or the knock signal does not exist, calculating a substitution correction value of the weather/geographic information to the ignition angle by adopting the preset algorithm aiming at each type of the weather/geographic information; and adding the various weather/geographic information to the substitute correction value of the ignition angle and the basic ignition angle to obtain the target ignition angle.
Referring to fig. 8, based on the same inventive concept, an embodiment of the present invention further provides a control policy modification method applied to a controller, including:
step S21, receiving one or more climate/geographic information of the current geographic position sent by the vehicle-mounted network unit; wherein the one or more climate/geographic information at the geographic location is fed back by a vehicle web server;
and step S22, correcting the control strategy of the actuator according to one or more types of the climate/geographic information.
Preferably, in the control strategy modification method, the climate/geographic information includes: air temperature, air humidity, particulate matter content in air, sulphide content in air, wind speed, wind direction and altitude.
Preferably, in the control strategy modification method, the controller is an engine controller, the actuator is an engine, and the control strategy is an ignition angle control strategy.
Preferably, in the control strategy modification method, the step S22 modifies the control strategy of the actuator according to one or more of the climate/geographic information, including:
determining whether one or more of the climate/geographic information is valid;
if the correction value is valid, inquiring a preset ignition angle correction table corresponding to each type of climate/geographic information so as to determine a reference correction value of the climate/geographic information to the ignition angle; adding the reference correction value of various climate/geographic information to the ignition angle with the basic ignition angle to obtain a target ignition angle;
and if the target ignition angle is invalid, directly adding the preset substitution correction value of the various climate/geographic information to the ignition angle with the basic ignition angle to obtain the target ignition angle.
Preferably, in the control strategy modification method, the step S22 modifies the ignition angle control strategy of the actuator according to one or more of the climate/geographic information, and includes:
determining whether one or more of the climate/geographic information is valid;
if the information is valid, acquiring and processing a knock signal of a knock sensor, storing the knock signal, the weather/geographic information, the engine speed and the load in a partition mode aiming at each type of the weather/geographic information, and calculating a reference correction value of the weather/geographic information to an ignition angle by adopting a preset algorithm; adding the reference correction value of various climate/geographic information to the ignition angle with the basic ignition angle to obtain a target ignition angle;
if the weather/geographic information is invalid or the knock signal does not exist, calculating a substitution correction value of the weather/geographic information to the ignition angle by adopting the preset algorithm aiming at each type of the weather/geographic information; and adding the various weather/geographic information to the substitute correction value of the ignition angle and the basic ignition angle to obtain the target ignition angle.
Based on the same inventive concept, an embodiment of the present invention further provides an electronic device, which includes a processor and a memory, where the memory stores instructions, and when the instructions are executed by the processor, the method for correcting a control policy applied to an on-vehicle network unit or the method for correcting a control policy applied to a controller can be implemented.
Based on the same inventive concept, an embodiment of the present invention further provides a readable storage medium, on which a computer program is stored, which, when executed by a processor, can implement the above-mentioned control policy modification method applied to the in-vehicle network unit or the above-mentioned control policy modification method applied to the controller.
Aspects of the present invention are described herein with reference to flowchart illustrations and/or block diagrams of methods, systems, electronic devices, and readable storage media according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer programs. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the programs, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a computer program may also be stored in a readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the readable storage medium storing the computer program comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer program may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the computer program which executes on the computer, other programmable apparatus or other devices implements the functions/acts specified in the flowchart and/or block diagram block or blocks.
It should be noted that, in the present specification, all the embodiments are described in a related manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the method, the electronic device, and the readable storage medium embodiments, since they are substantially similar to the system embodiments, the description is simple, and the relevant points can be referred to the partial description of the system embodiments.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (13)
1. A control strategy modification method is applied to a vehicle-mounted network unit and comprises the following steps:
determining the current geographic position;
sending an acquisition request for one or more climate/geographic information at the geographic location to an Internet of vehicles server;
receiving one or more of the climate/geographic information at the geographic location fed back by the Internet of vehicles server;
and sending one or more types of the climate/geographic information to a controller so that the controller modifies the control strategy of the actuator according to the one or more types of the climate/geographic information.
2. The control strategy modification method of claim 1, wherein the climate/geographic information comprises: air temperature, air humidity, particulate matter content in air, sulphide content in air, wind speed, wind direction and altitude.
3. The control strategy modification method of claim 1, wherein the controller is an engine controller, the actuator is an engine, and the control strategy is an ignition angle control strategy.
4. A control strategy modification method as claimed in claim 3, wherein the method of the engine controller modifying the ignition angle control strategy of the engine based on one or more of the climate/geographical information comprises:
the engine controller determining whether one or more of the climate/geographic information is valid;
if the correction value is valid, inquiring an ignition angle correction table corresponding to each type of climate/geographic information so as to determine a reference correction value of the climate/geographic information to the ignition angle; adding the reference correction value of various climate/geographic information to the ignition angle with the basic ignition angle to obtain a target ignition angle;
and if the target ignition angle is invalid, directly adding various substitution correction values of the climate/geographic information to the ignition angle with the basic ignition angle to obtain the target ignition angle.
5. A control strategy modification method as claimed in claim 3, wherein the method of the engine controller modifying the ignition angle control strategy of the engine based on one or more of the climate/geographical information comprises:
the engine controller determining whether one or more of the climate/geographic information is valid;
if the information is valid, acquiring and processing a knock signal of a knock sensor, storing the knock signal, the weather/geographic information, the engine speed and the load in a partition mode aiming at each kind of weather/geographic information, and calculating a reference correction value of the weather/geographic information to an ignition angle by adopting a preset algorithm; adding the reference correction value of various climate/geographic information to the ignition angle with the basic ignition angle to obtain a target ignition angle;
if the weather/geographic information is invalid or the knock signal does not exist, calculating a substitution correction value of the weather/geographic information to the ignition angle by adopting the preset algorithm aiming at each type of the weather/geographic information; and adding the various weather/geographic information to the substitute correction value of the ignition angle and the basic ignition angle to obtain the target ignition angle.
6. A control strategy modification method is applied to a controller and comprises the following steps:
receiving one or more types of climate/geographic information at the current geographic position sent by the vehicle-mounted network unit; wherein the one or more climate/geographic information at the geographic location is fed back by a vehicle web server;
and modifying the control strategy of the actuator according to one or more types of the climate/geographic information.
7. The control strategy modification method of claim 6, wherein the climate/geographic information comprises: air temperature, air humidity, particulate matter content in air, sulphide content in air, wind speed, wind direction and altitude.
8. The control strategy modification method of claim 6, wherein the controller is an engine controller, the actuator is an engine, and the control strategy is an ignition angle control strategy.
9. The control strategy modification method of claim 8, wherein modifying the control strategy of the actuator based on the one or more climate/geographic information comprises:
determining whether one or more of the climate/geographic information is valid;
if the correction value is valid, inquiring a preset ignition angle correction table corresponding to each type of climate/geographic information so as to determine a reference correction value of the climate/geographic information to the ignition angle; adding the reference correction value of various climate/geographic information to the ignition angle with the basic ignition angle to obtain a target ignition angle;
and if the target ignition angle is invalid, directly adding the preset substitution correction value of the various climate/geographic information to the ignition angle with the basic ignition angle to obtain the target ignition angle.
10. The control strategy modification method of claim 8, wherein modifying an actuator's firing angle control strategy based on one or more of the climate/geographic information comprises:
determining whether one or more of the climate/geographic information is valid;
if the information is valid, acquiring and processing a knock signal of a knock sensor, storing the knock signal, the weather/geographic information, the engine speed and the load in a partition mode aiming at each type of the weather/geographic information, and calculating a reference correction value of the weather/geographic information to an ignition angle by adopting a preset algorithm; adding the reference correction value of various climate/geographic information to the ignition angle with the basic ignition angle to obtain a target ignition angle;
if the weather/geographic information is invalid or the knock signal does not exist, calculating a substitution correction value of the weather/geographic information to the ignition angle by adopting the preset algorithm aiming at each type of the weather/geographic information; and adding the various weather/geographic information to the substitute correction value of the ignition angle and the basic ignition angle to obtain the target ignition angle.
11. A control strategy modification system, comprising: vehicle network unit, car networking server and controller, wherein:
the vehicle-mounted network unit is used for determining the current geographic position and sending an acquisition request aiming at one or more types of climate/geographic information at the geographic position to the vehicle networking server;
the vehicle networking server is used for determining one or more types of climate/geographic information at the geographic position and feeding back the climate/geographic information to the vehicle network unit;
the vehicular network unit is further used for sending one or more types of the climate/geographic information to the controller;
the controller is used for modifying the control strategy of the actuator according to one or more types of the climate/geographic information.
12. An electronic device comprising a processor and a memory, the memory having stored thereon instructions that, when executed by the processor, implement the control strategy correction method of any of claims 1-5 or any of claims 6-10.
13. A readable storage medium on which a computer program is stored, the computer program being adapted to implement the control strategy modification method of any one of claims 1-5 or any one of claims 6-10 when executed by a processor.
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| CN115059568A (en) * | 2022-08-18 | 2022-09-16 | 中国第一汽车股份有限公司 | Correction method and device for ignition advance angle of engine, storage medium and processor |
| CN116792239A (en) * | 2023-05-22 | 2023-09-22 | 中国第一汽车股份有限公司 | Engine ignition angle control system and method |
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