CN114151209B - Engine throttle opening control method, device, electronic equipment and storage medium - Google Patents
Engine throttle opening control method, device, electronic equipment and storage medium Download PDFInfo
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- CN114151209B CN114151209B CN202111359164.XA CN202111359164A CN114151209B CN 114151209 B CN114151209 B CN 114151209B CN 202111359164 A CN202111359164 A CN 202111359164A CN 114151209 B CN114151209 B CN 114151209B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
- F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1409—Introducing closed-loop corrections characterised by the control or regulation method using at least a proportional, integral or derivative controller
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/141—Introducing closed-loop corrections characterised by the control or regulation method using a feed-forward control element
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- 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
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The embodiment of the invention provides an engine throttle opening control method, an engine throttle opening control device, electronic equipment and a storage medium, wherein the method comprises the following steps: determining a first feed-forward opening based on an actual engine speed and an engine set charge; determining a total feedforward opening according to the first feedforward opening; determining a control opening according to the engine set charge and the actual engine charge; and determining a target opening of an engine throttle valve according to the total feedforward opening and the control opening. According to the embodiment of the invention, the first feedforward opening which is only related to the set charge of the engine and the rotation speed of the engine is considered, so that the output torque corresponding to the first feedforward opening is not influenced by the air inlet system of the engine and the environmental boundary condition, and the total torque output by the engine is more direct.
Description
Technical Field
The present invention relates to the field of control engineering technologies, and in particular, to a method and an apparatus for controlling an opening degree of an engine throttle, an electronic device, and a storage medium.
Background
With the advancement of environmental protection policies, clean energy has become a necessary trend to replace traditional petrochemical energy. In clean energy, because natural gas has the advantages of rich reserves, high combustion heat value, low emission pollutant and the like, motor vehicles using natural gas as power are widely used.
The basic operating principle of a natural gas engine is similar to that of a fuel engine, and engine operation output power is controlled through throttle opening. In the existing natural gas engine throttle control method, the throttle opening is adjusted by directly establishing an association relation between the accelerator opening and the throttle opening output. Because the engine is a nonlinear system, the control method can lead the engine to have slow following response, and the air inflow under the actual condition and the air inflow calibrated by the rack deviate along with the change of the environmental condition, so that the actual output power and the target power of the engine deviate to a certain extent, and the control effect is poor.
Disclosure of Invention
The embodiment of the invention provides a method and a device for controlling the opening degree of an engine throttle valve, electronic equipment and a storage medium, which are used for solving the problem of poor control effect in the prior art.
The embodiment of the invention provides a method for controlling the opening degree of an engine throttle valve, which comprises the following steps:
determining a first feed-forward opening based on an actual engine speed and an engine set charge;
determining a total feedforward opening according to the first feedforward opening;
determining a control opening according to the engine set charge and the actual engine charge;
and determining a target opening of an engine throttle valve according to the total feedforward opening and the control opening.
Optionally, determining the total feedforward opening according to the first feedforward opening includes:
determining that the total feedforward opening is equal to the first feedforward opening;
or determining a second feedforward opening according to a rear-front pressure ratio of the throttle rear side pressure to the throttle front side pressure and a preset standard air inlet flow, and determining the total feedforward opening according to the first feedforward opening and the second feedforward opening.
Optionally, determining the total feedforward opening according to the first feedforward opening and the second feedforward opening includes:
determining a first feedforward opening weight and a second feedforward opening weight according to the first feedforward opening and the actual rotation speed of the engine;
and multiplying the first feedforward opening weight by a first value of the first feedforward opening, and multiplying the second feedforward opening weight by a second value of the second feedforward opening, and summing to obtain the total feedforward opening.
Optionally, the throttle valve rear front pressure ratio is obtained by filtering the collected original throttle valve rear front pressure ratio through a PT filtering algorithm;
wherein the larger the difference between the post-front pressure ratio before filtering and after filtering, the smaller the filter window.
Optionally, determining the control opening based on the engine set charge and the actual engine charge includes:
and taking the difference value between the set charge of the engine and the actual charge of the engine as an input, and adopting a proportional-integral-derivative PID algorithm to determine the calculated output value as the control opening.
Optionally, determining the first feed forward opening based on the actual engine speed and the set engine charge includes:
determining a first feedforward opening corresponding to the actual engine speed and the set engine charge through the corresponding relation among the preset actual engine speed, the set engine charge and the first feedforward opening;
determining a second feedforward opening according to the throttle valve rear-front pressure ratio and a preset standard air inlet flow, including:
determining a second feedforward opening corresponding to the throttle valve rear front pressure ratio and the preset standard air inlet flow through the corresponding relation among the preset throttle valve rear front pressure ratio, the preset standard air inlet flow and the second feedforward opening;
determining a first feedforward opening weight and a second feedforward opening weight according to the first feedforward opening and the actual rotation speed of the engine, wherein the method comprises the following steps:
and determining the first feedforward opening weight and the second feedforward opening weight corresponding to the first feedforward opening and the actual engine speed according to the preset corresponding relation between the first feedforward opening and the actual engine speed and the first feedforward opening weight and the second feedforward opening weight.
Optionally, after determining the target opening of the engine throttle according to the total feedforward opening and the control opening, the method further includes:
and adjusting the opening of the throttle valve of the engine by taking the target opening as an adjustment target and adopting a position closed-loop control mode.
Based on the same inventive concept, the embodiment of the invention also provides an engine throttle opening control device, comprising:
the first feedforward opening degree calculation module is used for determining a first feedforward opening degree according to the actual rotating speed of the engine and the set charge of the engine;
the total feedforward opening degree calculation module is used for determining the total feedforward opening degree according to the first feedforward opening degree;
a control opening calculation module for determining a control opening based on the engine set charge and the engine actual charge;
and the target opening calculating module is used for determining the target opening of the engine throttle valve according to the total feedforward opening and the control opening.
Based on the same inventive concept, an embodiment of the present invention further provides an electronic device, including: a processor and a memory for storing instructions executable by the processor;
wherein the processor is configured to execute the instructions to implement the engine throttle opening control method.
Based on the same inventive concept, the embodiments of the present invention also provide a computer-readable storage medium storing a computer program for implementing the engine throttle opening control method.
The invention has the following beneficial effects:
according to the method, the device, the electronic equipment and the storage medium for controlling the opening degree of the engine throttle valve, provided by the embodiment of the invention, the first feedforward opening degree which is only related to the set charge of the engine and the rotating speed of the engine is considered, so that the output torque corresponding to the first feedforward opening degree is not influenced by the air inlet system of the engine and the environmental boundary condition, and the total torque output by the engine is more direct.
Drawings
FIG. 1 is a flow chart of a method for controlling the opening of an engine throttle according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a control strategy for an engine throttle opening control method according to an embodiment of the present invention;
FIG. 3 is a second strategy diagram of a method for controlling the opening of an engine throttle according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an engine throttle opening control device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a further description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a repetitive description thereof will be omitted. The words expressing the positions and directions described in the present invention are described by taking the drawings as an example, but can be changed according to the needs, and all the changes are included in the protection scope of the present invention. The drawings of the present invention are merely schematic representations of relative positional relationships and are not intended to represent true proportions.
It is noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than those herein described, and those skilled in the art may readily devise numerous other arrangements that do not depart from the spirit of the invention. Therefore, the present invention is not limited by the specific embodiments disclosed below. The description hereinafter sets forth the preferred embodiment for carrying out the present application, but is not intended to limit the scope of the present application in general, for the purpose of illustrating the general principles of the present application. The scope of the present application is defined by the appended claims.
The method, the device, the electronic equipment and the storage medium for controlling the opening degree of the throttle valve of the engine, which are provided by the embodiment of the invention, are specifically described below with reference to the accompanying drawings. It should be noted that the technical solution provided by the embodiment of the present invention may be applied to, but not limited to, a natural gas engine, a fuel engine, a hydrogen fuel engine, etc., and the natural gas engine will be described below as an example.
The embodiment of the invention provides an engine throttle opening control method, as shown in fig. 1-3 (wherein fig. 1 illustrates a step flow of the method, and fig. 2 and 3 respectively illustrate control strategies corresponding to the method), comprising the following steps:
s110, determining a first feedforward opening according to the actual rotation speed of the engine and the set charge of the engine.
S120, determining the total feedforward opening according to the first feedforward opening.
S130, determining a control opening according to the set charge of the engine and the actual charge of the engine.
And S140, determining a target opening degree of an engine throttle valve according to the total feedforward opening degree and the control opening degree.
According to the engine throttle opening control method provided by the embodiment of the invention, the first feedforward opening which is only related to the engine set charge and the engine speed is considered, so that the output torque corresponding to the first feedforward opening is not influenced by the engine air inlet system and the environmental boundary condition, and the total torque output by the engine is more direct.
As an alternative embodiment, the step S120 of determining the total feedforward opening according to the first feedforward opening includes (not shown in fig. 1, and illustrated in fig. 2 as a combined control strategy):
s121, determining that the total feedforward opening degree is equal to the first feedforward opening degree.
In this way, by directly setting the total feedforward opening degree to the first feedforward opening degree, the total feedforward opening degree can be made independent of the engine intake system and the environmental boundary conditions, and the stability of the engine operation is high.
As another alternative embodiment, the step S120 of determining the total feedforward opening according to the first feedforward opening includes (not shown in fig. 1, and a corresponding control strategy is illustrated in fig. 3):
s122, determining a second feedforward opening according to a rear-front pressure ratio of the rear side pressure of the throttle valve to the front side pressure of the throttle valve and a preset standard air inlet flow.
S123, determining the total feedforward opening according to the first feedforward opening and the second feedforward opening.
Compared with the scheme of calculating the final target opening by independently adopting the first feedforward opening as the total feedforward opening, the scheme of calculating the final target opening by independently adopting the second feedforward opening as the total feedforward opening considers various boundary conditions such as the required flow, the temperature, the pressure and the like of the air inlet system, so that in the transient change process, the scheme can respond to the charge of the engine requirement according to the system state more timely. However, the latter scheme is prone to produce a coupling control phenomenon with the closed-loop control of the boost pressure of the supercharger when the engine is in a high load condition (e.g., UGD point condition), resulting in significant engine jerk. Therefore, the first feedforward opening degree and the second feedforward opening degree are comprehensively considered, the engine throttle control schemes corresponding to the two feedforward opening degree calculation schemes can be made up for the advantages and the advantages are complemented, and therefore the shaking condition of the engine under the high-load working condition is reduced while the dynamic performance and the responsiveness requirements of the engine control under the medium-small working condition are improved.
In the step S123, in determining the total feedforward opening according to the first feedforward opening and the second feedforward opening, a fixed weight value may be set in advance for the first feedforward opening and the second feedforward opening, so as to be more biased toward reducing engine shake or accelerating a response speed of throttle opening control in the total feedforward opening. Or further alternatively, the step S123 of determining the total feedforward opening according to the first feedforward opening and the second feedforward opening includes:
determining a first feedforward opening weight and a second feedforward opening weight according to the first feedforward opening and the actual rotation speed of the engine;
and multiplying the first feedforward opening weight by a first value of the first feedforward opening, and multiplying the second feedforward opening weight by a second value of the second feedforward opening, and summing to obtain the total feedforward opening.
In a specific implementation process, as shown in fig. 3, the second feedforward opening degree may be set to be equal to 1 minus the first feedforward opening degree value, and then the above steps may be to determine a first feedforward opening degree weight according to the first feedforward opening degree and the actual rotation speed of the engine, and calculate 1 minus the first feedforward opening degree weight to determine the second feedforward opening degree weight. If the second feedforward opening weight is set to 1 minus the first feedforward opening weight, the total feedforward opening can be expressed as:
u o ＝u c ·f ac +u m (1-f ac )
wherein u is c For the first feedforward opening degree, u m F is the second feedforward opening degree ac U is the first feedforward opening weight o Is the total feed forward opening.
In this way, the weight distributed to the two feedforward openings is determined according to the actual rotation speed of the engine and the specific value of the first feedforward opening, so that the value of the total feedforward opening is more biased to the second feedforward opening under the condition that the throttle opening control scheme corresponding to the second feedforward opening is not easy to generate coupling control, and the throttle opening control response speed is improved; under the working conditions that coupling control is easy to generate such as high load, the throttle opening control scheme corresponding to the second feedforward opening enables the value of the total feedforward opening to be more biased to the first feedforward opening so as to reduce the jitter problem of the engine; even if one scheme is independently implemented under the optimal working condition, the weight value of the other feedforward opening is 0, so that smooth switching of the control modes of the throttle opening adopted by different working conditions is realized, the throttle opening of the engine is flexibly controlled, and a better driving effect is realized.
In the calculation process of the second feedforward opening degree, when the demand variable and the rotating speed are unchanged, under certain working conditions, the tiny change of the throttle valve can influence the pressure before and after the throttle valve, so that the pressure before and after the throttle valve can change along with the change of the throttle valve, and the coupling fluctuation of the engine can also occur. In view of the above, optionally, as shown in fig. 3, the post-throttle front pressure ratio is obtained by filtering the collected raw post-throttle front pressure ratio by a low-pass filtering algorithm such as a PT filtering algorithm; wherein the larger the difference between the post-front pressure ratio before filtering and after filtering, the smaller the filter window.
In a specific implementation process, the PT filtering algorithm may be a PT1 filtering algorithm or a PT2 filtering algorithm. As shown in fig. 3, the filtering window may be determined by looking up a table of a preset difference value of the post-front pressure ratio between before and after filtering and a filtering parameter of the filtering window.
In this way, the filter window of the low-pass filter is determined according to the difference value of the back-to-front pressure ratio before and after the filter, and the larger the difference value is, the smaller the filter window is for the responsiveness; in order to reduce minor fluctuations, the smaller the difference, the larger the filter window. Therefore, the damping of the tiny change of the rear front pressure ratio of the throttle valve is increased, the input of the rear front pressure ratio of the throttle valve is stabilized, the tiny fluctuation of the rear front pressure ratio of the throttle valve is reduced, and the system coupling fluctuation is reduced.
Optionally, the step S130 of determining the control opening according to the engine set charge and the actual engine charge includes:
the calculated output value is determined as the control opening using a proportional-integral-derivative (Proportion Integral Differential, PID) algorithm with the difference of the engine set charge and the actual engine charge as input.
Therefore, the PID algorithm is adopted to adjust the control opening degree, the deviation of the controlled object can be corrected rapidly and effectively to reach a stable state, and the parameter setting mode is simple and convenient.
Optionally, the step S110 of determining the first feedforward opening according to the actual rotation speed of the engine and the set charge of the engine specifically includes:
and determining the first feedforward opening corresponding to the actual engine speed and the set engine charge through the corresponding relation among the preset actual engine speed, the set engine charge and the first feedforward opening.
Optionally, the step S122 of determining the second feedforward opening according to the throttle valve back-front pressure ratio and the preset standard intake air flow specifically includes:
and determining the second feedforward opening corresponding to the throttle valve rear front pressure ratio and the preset standard air inlet flow through the corresponding relation among the preset throttle valve rear front pressure ratio, the preset standard air inlet flow and the second feedforward opening.
Optionally, determining a first feedforward opening weight and a second feedforward opening weight according to the first feedforward opening and the actual rotation speed of the engine specifically includes:
and determining the first feedforward opening weight and the second feedforward opening weight corresponding to the first feedforward opening and the actual engine speed according to the preset corresponding relation between the first feedforward opening and the actual engine speed and the first feedforward opening weight and the second feedforward opening weight.
In the specific implementation process, as shown in fig. 2 and 3, the above-mentioned several corresponding relations (the corresponding relations of the actual engine speed, the set engine charge and the first feedforward opening degree, the corresponding relations of the throttle back-front pressure ratio, the preset standard intake air flow and the second feedforward opening degree) may be calibrated through a preliminary test, and set as a relation table (such as the engine charge rotation opening degree table, the weight factor table and the engine flow rotation opening degree table illustrated in fig. 3), and the corresponding numerical values are determined through a table look-up during the control of the throttle opening degree of the engine.
After determining a target opening of an engine throttle according to the total feedforward opening and the control opening, the method further comprises:
and S150, adjusting the opening of the throttle valve of the engine by adopting a position closed-loop control mode by taking the target opening as an adjustment target.
Because the throttle valve can control and adjust the position of the throttle valve, and the position of the throttle valve can be influenced by factors such as disturbance and the like, the throttle valve opening is adjusted in a closed-loop control mode, so that the throttle valve can be kept at the position of the target opening. In the implementation process, a certain duty ratio can be adopted to carry out position closed-loop adjustment on the throttle opening so as to reduce the adjustment times.
Based on the same inventive concept, the embodiment of the invention also provides an engine throttle opening control device, as shown in fig. 4, comprising:
a first feed-forward opening calculation module M110 for determining a first feed-forward opening based on an actual engine speed and an engine set charge;
a total feedforward opening calculating module M120, configured to determine a total feedforward opening according to the first feedforward opening;
a control opening calculation module M130 for determining a control opening based on the engine set charge and the engine actual charge;
and a target opening calculating module M140, configured to determine a target opening of an engine throttle according to the total feedforward opening and the control opening.
As an optional embodiment, the total feedforward opening calculating module M120 is specifically configured to:
determining that the total feedforward opening is equal to the first feedforward opening;
as another alternative embodiment, the total feedforward opening calculating module M120 is specifically configured to:
and determining a second feedforward opening according to a rear-front pressure ratio of the rear side pressure of the throttle valve to the front side pressure of the throttle valve and a preset standard air inlet flow, and determining the total feedforward opening according to the first feedforward opening and the second feedforward opening.
Optionally, determining the total feedforward opening according to the first feedforward opening and the second feedforward opening includes:
determining a first feedforward opening weight and a second feedforward opening weight according to the first feedforward opening and the actual rotation speed of the engine;
and multiplying the first feedforward opening weight by a first value of the first feedforward opening, and multiplying the second feedforward opening weight by a second value of the second feedforward opening, and summing to obtain the total feedforward opening.
Optionally, the throttle valve rear front pressure ratio is obtained by filtering the collected original throttle valve rear front pressure ratio through a PT filtering algorithm;
wherein the larger the difference between the post-front pressure ratio before filtering and after filtering, the smaller the filter window.
Alternatively, the control opening calculation module M130 is specifically configured to:
and taking the difference value between the set charge of the engine and the actual charge of the engine as an input, and adopting a proportional-integral-derivative PID algorithm to determine the calculated output value as the control opening.
Optionally, determining the first feed forward opening based on the actual engine speed and the set engine charge includes:
determining a first feedforward opening corresponding to the actual engine speed and the set engine charge through the corresponding relation among the preset actual engine speed, the set engine charge and the first feedforward opening;
determining a second feedforward opening according to the throttle valve rear-front pressure ratio and a preset standard air inlet flow, including:
determining a second feedforward opening corresponding to the throttle valve rear front pressure ratio and the preset standard air inlet flow through the corresponding relation among the preset throttle valve rear front pressure ratio, the preset standard air inlet flow and the second feedforward opening;
determining a first feedforward opening weight and a second feedforward opening weight according to the first feedforward opening and the actual rotation speed of the engine, wherein the method comprises the following steps:
and determining the first feedforward opening weight and the second feedforward opening weight corresponding to the first feedforward opening and the actual engine speed according to the preset corresponding relation between the first feedforward opening and the actual engine speed and the first feedforward opening weight and the second feedforward opening weight.
Optionally, the apparatus further comprises:
the throttle opening control module M150 is configured to adjust the engine throttle opening by using a position closed-loop control method with the target opening as an adjustment target.
Since the specific working principle of the engine throttle opening control device is basically consistent with the engine throttle opening control method described above, reference may be made to specific embodiments of the corresponding method, and details thereof are not repeated herein.
The device embodiments described above are merely illustrative. The division of the modules is merely a logical functional division, and there may be other manners of division in actual implementation, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.
In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module. The integrated modules may be implemented in hardware or in software functional modules.
Based on the same inventive concept, an embodiment of the present invention further provides an electronic device, as shown in fig. 5, including: a processor 110 and a memory 120 for storing instructions executable by the processor 110; wherein the processor 110 is configured to execute the instructions to implement the engine throttle opening control method.
In an implementation, the devices may vary considerably due to configuration or performance differences. For example, the apparatus may include one or more processors 110; the device may include one or more memories 120 and storage media 130 storing applications 131 or data 132. Wherein memory 120 and storage medium 130 may be transitory or persistent storage. The application 131 stored in the memory 120 may include one or more of the modules (not shown in fig. 5), each of which may include a series of instruction operations to the engine throttle opening control apparatus. Still further, the processor 110 may be configured to communicate with a storage medium 130, and execute a series of instruction operations in the storage medium 130 on the device. One or more operating systems 133, such as Android, IOS, linux, windows, mac OS, unix, μC/OS-II, vxWorks, freeRTOS, mded OS, RTX, etc., may also be included in the memory 120 or storage medium 130. The device may also include one or more power supplies (not shown in fig. 5) the device may also include one or more wired network interfaces 141 and/or wireless network interfaces 142, one or more input/output interfaces 143.
Based on the same inventive concept, the embodiments of the present invention also provide a computer-readable storage medium storing a computer program for implementing the engine throttle opening control method.
According to the method, the device, the electronic equipment and the storage medium for controlling the opening degree of the engine throttle valve, provided by the embodiment of the invention, the first feedforward opening degree which is only related to the set charge of the engine and the rotating speed of the engine is considered, so that the output torque corresponding to the first feedforward opening degree is not influenced by the air inlet system of the engine and the environmental boundary condition, and the total torque output by the engine is more direct.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (8)
1. An engine throttle opening control method, characterized by comprising:
determining a first feed-forward opening based on an actual engine speed and an engine set charge;
determining a second feedforward opening according to a rear-front pressure ratio of the rear side pressure of the throttle valve to the front side pressure of the throttle valve and a preset standard air inlet flow;
determining a first feedforward opening weight and a second feedforward opening weight according to the first feedforward opening and the actual rotation speed of the engine;
summing the first feedforward opening weight multiplied by a first value of the first feedforward opening and the second feedforward opening weight multiplied by a second value of the second feedforward opening to obtain a total feedforward opening;
determining a control opening according to the engine set charge and the actual engine charge;
and determining a target opening of an engine throttle valve according to the total feedforward opening and the control opening.
2. The method of claim 1, wherein the post throttle front pressure ratio is obtained by filtering the collected raw post throttle front pressure ratio by a PT filtering algorithm;
wherein the larger the difference between the post-front pressure ratio before filtering and after filtering, the smaller the filter window.
3. The method of claim 1 wherein determining the control opening based on the engine set charge and the actual engine charge comprises:
and taking the difference value between the set charge of the engine and the actual charge of the engine as an input, and adopting a proportional-integral-derivative PID algorithm to determine the calculated output value as the control opening.
4. The method of claim 1 wherein determining the first feed forward opening based on the actual engine speed and the set engine charge comprises:
determining a first feedforward opening corresponding to the actual engine speed and the set engine charge through the corresponding relation among the preset actual engine speed, the set engine charge and the first feedforward opening;
determining a second feedforward opening according to the throttle valve rear-front pressure ratio and a preset standard air inlet flow, including:
determining a second feedforward opening corresponding to the throttle valve rear front pressure ratio and the preset standard air inlet flow through the corresponding relation among the preset throttle valve rear front pressure ratio, the preset standard air inlet flow and the second feedforward opening;
determining a first feedforward opening weight and a second feedforward opening weight according to the first feedforward opening and the actual rotation speed of the engine, wherein the method comprises the following steps:
and determining the first feedforward opening weight and the second feedforward opening weight corresponding to the first feedforward opening and the actual engine speed according to the preset corresponding relation between the first feedforward opening and the actual engine speed and the first feedforward opening weight and the second feedforward opening weight.
5. The method of claim 1, further comprising, after determining a target opening of an engine throttle based on the total feed-forward opening and the control opening:
and adjusting the opening of the throttle valve of the engine by taking the target opening as an adjustment target and adopting a position closed-loop control mode.
6. An engine throttle opening control apparatus, comprising:
the first feedforward opening degree calculation module is used for determining a first feedforward opening degree according to the actual rotating speed of the engine and the set charge of the engine;
the total feedforward opening degree calculation module is used for determining a second feedforward opening degree according to the rear-front pressure ratio of the rear side pressure of the throttle valve to the front side pressure of the throttle valve and a preset standard air inlet flow; determining a first feedforward opening weight and a second feedforward opening weight according to the first feedforward opening and the actual rotation speed of the engine; summing the first feedforward opening weight multiplied by a first value of the first feedforward opening and the second feedforward opening weight multiplied by a second value of the second feedforward opening to obtain a total feedforward opening;
a control opening calculation module for determining a control opening based on the engine set charge and the engine actual charge;
and the target opening calculating module is used for determining the target opening of the engine throttle valve according to the total feedforward opening and the control opening.
7. An electronic device, comprising: a processor and a memory for storing instructions executable by the processor;
wherein the processor is configured to execute the instructions to implement the engine throttle opening control method of any one of claims 1-5.
8. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for implementing the engine throttle opening control method according to any one of claims 1 to 5.
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| CN115045769B (en) * | 2022-06-30 | 2024-05-03 | 中国第一汽车股份有限公司 | Engine load control system and method, electronic terminal and storage medium |
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