CN114151209A - Method and device for controlling opening of throttle valve of engine, electronic equipment and storage medium - Google Patents

Method and device for controlling opening of throttle valve of engine, electronic equipment and storage medium Download PDF

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Publication number
CN114151209A
CN114151209A CN202111359164.XA CN202111359164A CN114151209A CN 114151209 A CN114151209 A CN 114151209A CN 202111359164 A CN202111359164 A CN 202111359164A CN 114151209 A CN114151209 A CN 114151209A
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China
Prior art keywords
opening degree
engine
opening
feedforward
determining
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CN202111359164.XA
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Chinese (zh)
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CN114151209B (en
Inventor
江楠
任宪丰
吕宪勇
张润东
郭万琦
李维龙
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Weichai Power Co Ltd
Weifang Weichai Power Technology Co Ltd
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Weichai Power Co Ltd
Weifang Weichai Power Technology Co Ltd
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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
    • 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
    • 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
    • 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
    • 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

Abstract

The embodiment of the invention provides a method and a device for controlling the opening of an engine throttle valve, 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 a set engine charge; determining a total feedforward opening degree according to the first feedforward opening degree; determining a control opening based on the engine set charge and the engine actual charge; and determining the target opening of the engine throttle valve according to the total feedforward opening and the control opening. According to the embodiment of the invention, the first feedforward opening degree only related to the set charging amount 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.

Description

Method and device for controlling opening of throttle valve of engine, electronic equipment and storage medium
Technical Field
The invention relates to the technical field of control engineering, in particular to a method and a device for controlling the opening of an engine throttle valve, electronic equipment and a storage medium.
Background
With the advance of environmental protection policy, the replacement of traditional petrochemical energy by clean energy has become a necessary trend. In clean energy, natural gas has the advantages of rich reserves, high combustion heat value, low pollutant emission and the like, so that the motor vehicle taking the natural gas as power is widely applied.
The basic working principle of the natural gas engine is similar to that of a fuel oil engine, and the running output power of the engine is controlled through the opening of a throttle valve. In the existing natural gas engine throttle valve control method, the throttle valve opening degree is adjusted by directly establishing a correlation between the accelerator pedal opening degree and the throttle valve opening degree output. Because the engine is a nonlinear system, the following response of the engine is slow due to the control method, and the air inflow under the actual condition and the air inflow calibrated by the stand have deviation along with the change of environmental conditions, so that the actual output power and the target power of the engine have certain deviation, and the control effect is poor.
Disclosure of Invention
The embodiment of the invention provides a method and a device for controlling the opening 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 of a throttle valve of an engine, which comprises the following steps:
determining a first feed-forward opening based on an actual engine speed and a set engine charge;
determining a total feedforward opening degree according to the first feedforward opening degree;
determining a control opening based on the engine set charge and the engine actual charge;
and determining the target opening of the engine throttle valve according to the total feedforward opening and the control opening.
Optionally, determining a total feed-forward opening degree according to the first feed-forward opening degree comprises:
determining that the total feed-forward opening degree is equal to the first feed-forward opening degree;
alternatively, a second feed-forward opening degree is determined according to a rear-front pressure ratio of the throttle rear side pressure to the throttle front side pressure and a preset standard intake air flow rate, and the total feed-forward opening degree is determined according to the first feed-forward opening degree and the second feed-forward opening degree.
Optionally, determining the total feed-forward opening degree according to the first feed-forward opening degree and the second feed-forward opening degree comprises:
determining a first feedforward opening weight and a second feedforward opening weight according to the first feedforward opening and the actual rotating speed of the engine;
and summing the first feedforward opening degree weight multiplied by a first numerical value of the first feedforward opening degree and the second feedforward opening degree weight multiplied by a second numerical value of the second feedforward opening degree to obtain the total feedforward opening degree.
Optionally, the acquired original throttle back-to-front pressure ratio is filtered by a PT filtering algorithm;
wherein the larger the difference in the post-pre-filter to post-pre-filter pressure ratio, the smaller the filter window.
Alternatively, determining the control opening based on the set engine charge and the actual engine charge comprises:
and determining the calculated output value as the control opening degree by adopting a proportional-integral-derivative (PID) algorithm by taking the difference value of the set engine charge and the actual engine charge as an input.
Alternatively, 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 feed-forward opening degree according to the throttle valve rear-to-front pressure ratio and the preset standard intake air flow, comprising:
determining a second feedforward opening degree corresponding to the throttle valve rear-front pressure ratio and the preset standard intake air flow through a preset corresponding relation among the throttle valve rear-front pressure ratio, the preset standard intake air flow and the second feedforward opening degree;
determining a first feed-forward opening degree weight and a second feed-forward opening degree weight according to the first feed-forward opening degree and the actual rotating speed of the engine, and the method comprises the following steps:
and determining the first feedforward opening degree weight and the second feedforward opening degree weight corresponding to the first feedforward opening degree and the actual engine speed according to the preset corresponding relation between the first feedforward opening degree and the actual engine speed and the first feedforward opening degree weight and the second feedforward opening degree weight.
Optionally, after determining the target opening of the engine throttle valve according to the total feed-forward opening and the control opening, the method further comprises:
and 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.
Based on the same inventive concept, an embodiment of the present invention further provides an engine throttle opening degree control device, including:
the first feedforward opening calculation module is used for determining a first feedforward opening according to the actual rotating speed of the engine and the set charging amount 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 an engine set charge and an engine actual charge;
and the target opening calculation module is used for determining the target opening of the engine throttle 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 processor-executable instructions;
wherein the processor is configured to execute the instructions to implement the engine throttle opening degree control method.
Based on the same inventive concept, embodiments of the present invention also provide a computer-readable storage medium storing a computer program for implementing the engine throttle opening degree 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 of the throttle valve of the engine, the first feedforward opening only related to the set charging amount and the rotating speed of the engine is considered, so that the output torque corresponding to the first feedforward opening is not influenced by an air inlet system of the engine and environmental boundary conditions, and the total output torque of the engine is more direct.
Drawings
FIG. 1 is a flow chart of a method for controlling opening of a throttle valve of an engine according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a control strategy of a method for controlling the opening of a throttle valve of an engine according to an embodiment of the present invention;
FIG. 3 is a second control strategy diagram of a method for controlling the opening of a throttle valve of an engine according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an engine throttle opening degree control apparatus 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 to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples. Example embodiments may, however, be embodied in many different 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 example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted. The words expressing the position and direction described in the present invention are illustrated in the accompanying drawings, but may be changed as required and still be within the scope of the present invention. The drawings of the present invention are for illustrative purposes only and do not represent true scale.
It should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
The following describes an engine throttle opening degree control method, an engine throttle opening degree control device, an electronic apparatus, and a storage medium according to an embodiment of the present invention with reference to the drawings. It should be noted that the technical solution provided by the embodiment of the present invention can be applied to, but is not limited to, a natural gas engine, a fuel engine, a hydrogen fuel engine, and the like, and the natural gas engine will be taken as an example for description hereinafter.
The embodiment of the invention provides a method for controlling the opening degree of a throttle valve of an engine, which is shown in figures 1-3 (wherein figure 1 illustrates the step flow of the method, and figures 2 and 3 illustrate control strategies corresponding to the method respectively), and comprises the following steps:
and S110, determining a first feed-forward opening according to the actual rotating speed of the engine and the set charging amount of the engine.
And S120, determining a total feedforward opening degree according to the first feedforward opening degree.
And S130, determining a control opening according to the set charge of the engine and the actual charge of the engine.
And S140, determining the target opening of the engine throttle according to the total feedforward opening and the control opening.
According to the method for controlling the opening degree of the throttle valve of the engine, the first feedforward opening degree only related to the set charging quantity 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 an air inlet system of the engine and environmental boundary conditions, and the total output torque of the engine is more direct.
As an alternative embodiment, the step S120 of determining the total feedforward opening degree according to the first feedforward opening degree includes (not shown in fig. 1, and the merged control strategy is illustrated in fig. 2):
and 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 not to be affected by the engine intake system and the environmental boundary conditions, and the stability of the engine operation is high.
As another alternative, the step S120 of determining the total feedforward opening degree according to the first feedforward opening degree includes (not shown in fig. 1, and a corresponding control strategy is illustrated in fig. 3):
and S122, determining a second feed-forward opening according to the rear-front pressure ratio of the throttle rear side pressure and the throttle front side pressure and the preset standard intake air flow.
And S123, determining the total feedforward opening degree according to the first feedforward opening degree and the second feedforward opening degree.
Compared with the scheme of singly adopting the first feedforward opening degree as the total feedforward opening degree to calculate the final target opening degree, the scheme of singly adopting the second feedforward opening degree as the total feedforward opening degree to calculate the final target opening degree considers various boundary conditions such as required flow, temperature and pressure of an air intake system, and therefore the scheme can respond to the charging amount required by the engine according to the system state in a transient change process. However, in the latter scheme, when the engine is in a high-load condition (for example, UGD point condition), a coupling control phenomenon is easily generated with closed-loop control of the boost pressure of the supercharger, so that the engine is obviously shaken. Therefore, the first feedforward opening degree and the second feedforward opening degree are comprehensively considered, the control schemes of the engine throttle valves corresponding to the calculation schemes of the two feedforward opening degrees can be made up for the deficiencies, and the advantages are complemented, so that the requirements of dynamic property and responsiveness of engine control under medium and small working conditions are improved, and meanwhile the shaking condition of the engine under the high-load working condition is reduced.
In the step S123 of determining the total feedforward opening degree from the first feedforward opening degree and the second feedforward opening degree, fixed weight values may be set in advance for the first feedforward opening degree and the second feedforward opening degree to place more emphasis on reducing engine shake or increasing the response speed of throttle opening degree control in the total feedforward opening degree. Or further optionally, the step S123 of determining the total feed-forward opening degree according to the first feed-forward opening degree and the second feed-forward opening degree includes:
determining a first feedforward opening weight and a second feedforward opening weight according to the first feedforward opening and the actual rotating speed of the engine;
and summing the first feedforward opening degree weight multiplied by a first numerical value of the first feedforward opening degree and the second feedforward opening degree weight multiplied by a second numerical value of the second feedforward opening degree to obtain the total feedforward opening degree.
In a specific implementation, as shown in fig. 3, the second feedforward opening degree may be set equal to 1 minus the first feedforward opening degree value, and then the above step may be to determine a first feedforward opening degree weight according to the first feedforward opening degree and the actual engine speed, 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 may be expressed as:
uo＝uc·fac+um(1-fac)
wherein u iscIs a first feed-forward opening degree, umIs a second feed-forward opening degree, facIs a first feed-forward opening degreeWeight uoIs the total feed forward opening.
In this way, the weights distributed to the two feedforward opening degrees are determined according to the actual rotating speed of the engine and the specific numerical value of the first feedforward opening degree, so that the numerical value of the total feedforward opening degree is more biased to the second feedforward opening degree under the working condition that the throttle opening degree control scheme corresponding to the second feedforward opening degree is not easy to generate coupling control, and the throttle opening degree control response speed is improved; under the working conditions that coupling control is easily generated under high load and the like in the throttle opening control scheme corresponding to the second feedforward opening, the numerical value of the total feedforward opening is more biased to the first feedforward opening so as to reduce the problem of engine jitter; even under the condition that one scheme independently implements the optimal working condition, the weighted value of the other feedforward opening degree is set to be 0, so that the smooth switching of the control mode of the throttle opening degree adopted under different working conditions is realized, the throttle opening degree of the engine is flexibly controlled, and the better driving effect is realized.
In the calculation process of the second feedforward opening degree, when the demand variable and the rotating speed are not changed, under certain conditions, the pressure in front of the throttle valve and the pressure behind the throttle valve are influenced by small changes of the throttle valve, so that the pressure in front of the throttle valve changes along with the changes of the throttle valve, and the engine also has coupling fluctuation. In view of the above problem, optionally, as shown in fig. 3, the obtained raw throttle back pressure ratio is filtered by a low-pass filtering algorithm, such as a PT filtering algorithm; wherein the larger the difference in the post-pre-filter to post-pre-filter pressure ratio, 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, etc. As shown in fig. 3, the filtering window may be determined by looking up a table of a preset difference between the pre-filtering before-post pressure ratio and the pre-filtering after-filtering before-post pressure ratio and a filtering parameter corresponding table of the filtering window.
Thus, the filter window of the low-pass filtering is determined according to the difference of the post-pre-pressure ratio before filtering and the post-pressure ratio after filtering, and the larger the difference is, the smaller the filter window is for the responsiveness; to reduce the small fluctuations, the smaller the difference, the larger the filter window. Therefore, the damping of the small change of the back-to-front pressure ratio of the throttle valve is increased, the input of the back-to-front pressure ratio of the throttle valve is stabilized, the small fluctuation of the back-to-front pressure ratio of the throttle valve is reduced, and the coupling fluctuation of a system is reduced.
Alternatively, the step S130 of determining the control opening degree according to the set charge of the engine and the actual charge of the engine includes:
and determining the calculated output value as the control opening by using a proportional-Integral-derivative (PID) algorithm with the difference value of the set engine charge and the actual engine charge as an input.
Therefore, the PID algorithm is adopted to adjust the control opening, the deviation of the controlled object can be corrected to reach a stable state quickly and effectively, and the parameter setting mode is simple and convenient.
Alternatively, the step S110 of determining the first feed-forward opening according to the actual engine speed and the set engine charge specifically includes:
the method comprises the steps of determining a first feedforward opening corresponding to an actual engine speed and a set engine charge through a preset corresponding relation among the actual engine speed, the set engine charge and the first feedforward opening.
Optionally, the step S122 of determining a second feed-forward opening degree according to the throttle valve rear-to-front pressure ratio and a preset standard intake air flow rate specifically includes:
and determining a second feedforward opening degree corresponding to the throttle valve rear-front pressure ratio and the preset standard intake air flow through the preset corresponding relation among the throttle valve rear-front pressure ratio, the preset standard intake air flow and the second feedforward opening degree.
Optionally, determining a first feed-forward opening degree weight and a second feed-forward opening degree weight according to the first feed-forward opening degree and the actual engine speed specifically includes:
and determining the first feedforward opening degree weight and the second feedforward opening degree weight corresponding to the first feedforward opening degree and the actual engine speed according to the preset corresponding relation between the first feedforward opening degree and the actual engine speed and the first feedforward opening degree weight and the second feedforward opening degree weight.
In the concrete implementation, as shown in fig. 2 and 3, the above-mentioned correspondence relationships (the correspondence relationship between the actual engine speed, the engine set charge, and the first feed-forward opening degree, the correspondence relationship between the throttle valve rear-front pressure ratio, the preset standard intake air flow rate, and the second feed-forward opening degree, and the correspondence relationship between the first feed-forward opening degree, the actual engine speed, the first feed-forward opening degree weight, and the second feed-forward opening degree weight) may be calibrated by a test in advance, and set as a relationship table (the engine charge opening degree table, the weight factor table, and the engine flow rate opening degree table as shown in fig. 3), and the corresponding value may be determined by looking up the table when the engine throttle opening degree is controlled.
After determining the target opening of the engine throttle valve based on the total feed-forward opening and the control opening, the method further includes:
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.
The position of the throttle valve can be controlled and adjusted by a driving system and also influenced by factors such as disturbance, so that the opening of the throttle valve is adjusted by adopting a closed-loop control mode to ensure that the throttle valve can be kept at the position of a target opening. In the specific implementation process, the position closed-loop adjustment can be performed on the opening degree of the throttle valve by adopting a certain duty ratio so as to reduce the adjustment times.
Based on the same inventive concept, an embodiment of the present invention further provides an engine throttle opening degree control device, as shown in fig. 4, including:
a first feed-forward opening calculation module M110 for determining a first feed-forward opening based on an actual engine speed and a set engine charge;
a total feedforward opening calculation 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 the target opening calculation module M140 is used for determining the target opening of the engine throttle valve according to the total feedforward opening and the control opening.
As an optional implementation manner, the total feedforward opening degree calculation module M120 is specifically configured to:
determining that the total feed-forward opening degree is equal to the first feed-forward opening degree;
as another optional implementation manner, the total feedforward opening degree calculation module M120 is specifically configured to:
and determining a second feed-forward opening degree according to a rear-front pressure ratio of the throttle rear side pressure to the throttle front side pressure and a preset standard intake air flow rate, and determining the total feed-forward opening degree according to the first feed-forward opening degree and the second feed-forward opening degree.
Optionally, determining the total feed-forward opening degree according to the first feed-forward opening degree and the second feed-forward opening degree comprises:
determining a first feedforward opening weight and a second feedforward opening weight according to the first feedforward opening and the actual rotating speed of the engine;
and summing the first feedforward opening degree weight multiplied by a first numerical value of the first feedforward opening degree and the second feedforward opening degree weight multiplied by a second numerical value of the second feedforward opening degree to obtain the total feedforward opening degree.
Optionally, the acquired original throttle back-to-front pressure ratio is filtered by a PT filtering algorithm;
wherein the larger the difference in the post-pre-filter to post-pre-filter pressure ratio, the smaller the filter window.
Optionally, the control opening calculating module M130 is specifically configured to:
and determining the calculated output value as the control opening degree by adopting a proportional-integral-derivative (PID) algorithm by taking the difference value of the set engine charge and the actual engine charge as an input.
Alternatively, 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 feed-forward opening degree according to the throttle valve rear-to-front pressure ratio and the preset standard intake air flow, comprising:
determining a second feedforward opening degree corresponding to the throttle valve rear-front pressure ratio and the preset standard intake air flow through a preset corresponding relation among the throttle valve rear-front pressure ratio, the preset standard intake air flow and the second feedforward opening degree;
determining a first feed-forward opening degree weight and a second feed-forward opening degree weight according to the first feed-forward opening degree and the actual rotating speed of the engine, and the method comprises the following steps:
and determining the first feedforward opening degree weight and the second feedforward opening degree weight corresponding to the first feedforward opening degree and the actual engine speed according to the preset corresponding relation between the first feedforward opening degree and the actual engine speed and the first feedforward opening degree weight and the second feedforward opening degree weight.
Optionally, the apparatus further comprises:
and the throttle opening control module M150 is used for adjusting the throttle opening of the engine by adopting a position closed-loop control mode by taking the target opening as an adjustment target.
Since the specific operation principle of the engine throttle opening degree control device is basically consistent with the engine throttle opening degree control method, reference may be made to the specific implementation of the corresponding method, and details are not repeated here.
The above-described apparatus embodiments are merely illustrative. The division of the modules is only one logical functional division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not performed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
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 particular implementations, the devices may vary widely due to differences in configuration or performance. For example, the apparatus may include one or more processors 110; the device may have one or more memories 120 and storage media 130 storing applications 131 or data 132. Memory 120 and storage medium 130 may be, among other things, transient or persistent storage. The application 131 stored in memory 120 may include one or more of the modules (not shown in FIG. 5) described above, each of which may include a series of commanded operations on an engine throttle opening control. Further, the processor 110 may be configured to communicate with the storage medium 130 to execute a series of instruction operations in the storage medium 130 on the device. The memory 120 or storage medium 130 may also include one or more operating systems 133, such as Android, IOS, Linux, Windows, Mac OS, Unix, μ C/OS-II, VxWorks, FreeRTOS, Mbit OS, RTX, and the like. The apparatus may also include one or more power supplies (not shown in fig. 5) the apparatus 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, embodiments of the present invention also provide a computer-readable storage medium storing a computer program for implementing the engine throttle opening degree control method.
According to the method, the device, the electronic equipment and the storage medium for controlling the opening of the throttle valve of the engine, the first feedforward opening only related to the set charging amount and the rotating speed of the engine is considered, so that the output torque corresponding to the first feedforward opening is not influenced by an air inlet system of the engine and environmental boundary conditions, and the total output torque of the engine is more direct.
As will be appreciated by one skilled in the art, 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 flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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 changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (10)

1. An engine throttle opening degree control method characterized by comprising:
determining a first feed-forward opening based on an actual engine speed and a set engine charge;
determining a total feedforward opening degree according to the first feedforward opening degree;
determining a control opening based on the engine set charge and the engine actual charge;
and determining the target opening of the engine throttle valve according to the total feedforward opening and the control opening.
2. The method of claim 1, wherein determining a total feed forward opening based on the first feed forward opening comprises:
determining that the total feed-forward opening degree is equal to the first feed-forward opening degree;
alternatively, a second feed-forward opening degree is determined according to a rear-front pressure ratio of the throttle rear side pressure to the throttle front side pressure and a preset standard intake air flow rate, and the total feed-forward opening degree is determined according to the first feed-forward opening degree and the second feed-forward opening degree.
3. The method of claim 2, wherein determining the total feed-forward opening as a function of the first feed-forward opening and the second feed-forward opening comprises:
determining a first feedforward opening weight and a second feedforward opening weight according to the first feedforward opening and the actual rotating speed of the engine;
and summing the first feedforward opening degree weight multiplied by a first numerical value of the first feedforward opening degree and the second feedforward opening degree weight multiplied by a second numerical value of the second feedforward opening degree to obtain the total feedforward opening degree.
4. The method of claim 2, wherein the post-throttle forward pressure ratio is obtained by filtering the acquired raw post-throttle forward pressure ratio through a PT filtering algorithm;
wherein the larger the difference in the post-pre-filter to post-pre-filter pressure ratio, the smaller the filter window.
5. The method of claim 1, wherein determining the control opening based on the engine set charge and the engine actual charge comprises:
and determining the calculated output value as the control opening degree by adopting a proportional-integral-derivative (PID) algorithm by taking the difference value of the set engine charge and the actual engine charge as an input.
6. The method of claim 3, 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 feed-forward opening degree according to the throttle valve rear-to-front pressure ratio and the preset standard intake air flow, comprising:
determining a second feedforward opening degree corresponding to the throttle valve rear-front pressure ratio and the preset standard intake air flow through a preset corresponding relation among the throttle valve rear-front pressure ratio, the preset standard intake air flow and the second feedforward opening degree;
determining a first feed-forward opening degree weight and a second feed-forward opening degree weight according to the first feed-forward opening degree and the actual rotating speed of the engine, and the method comprises the following steps:
and determining the first feedforward opening degree weight and the second feedforward opening degree weight corresponding to the first feedforward opening degree and the actual engine speed according to the preset corresponding relation between the first feedforward opening degree and the actual engine speed and the first feedforward opening degree weight and the second feedforward opening degree weight.
7. The method of claim 1, after determining a target opening of an engine throttle valve based on the total feed-forward opening and the control opening, further comprising:
and 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.
8. An engine throttle opening degree control device characterized by comprising:
the first feedforward opening calculation module is used for determining a first feedforward opening according to the actual rotating speed of the engine and the set charging amount 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 an engine set charge and an engine actual charge;
and the target opening calculation module is used for determining the target opening of the engine throttle according to the total feedforward opening and the control opening.
9. An electronic device, comprising: a processor and a memory for storing processor-executable instructions;
wherein the processor is configured to execute the instructions to implement the engine throttle opening degree control method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for implementing the engine throttle opening degree control method according to any one of claims 1 to 7.
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